Scope Precision EstimateContact Us

Accubid & Trimble Electrical Estimating

Send your electrical plans, spec book, and panel schedules. We return a Division 26–33 takeoff in Excel and PDF, organized so it re-keys or imports into your Accubid or Trimble job.

24–48 hours for most projectsTypical turnaround
Excel + marked-up PDFsOrganized by CSI section
ZIP-code pricingLocal material and labor
Price confirmed firstBefore any work starts
Sample estimate sheet
Division 26 — ElectricalSample format
Line itemQtyUnitQuantity
EMT 3/4 in, concealed18,400LF18,400 LF
THHN #12 THHN, 3 conductors55,200LF55,200 LF
4 in square boxes, 1-1/2 in deep1,250EA1,250 EA
2x4 LED troffer, 40W640EA640 EA
Panelboard 208Y/120V, 42-circuit14EA14 EA
Total raceway and wire73,600 LF
Illustrative quantities. Waste factor applied as a separate line.
Conduit above 2 in included

What is Accubid & Trimble electrical estimating?

It is the takeoff and pricing of electrical work in Accubid or Trimble, organized by CSI MasterFormat Division 26 and 28. Quantities are returned in LF for raceway and conductors, EA for devices and equipment, and LB for support, with a marked-up plan set for audit.

  • Raceway and conductors are measured in LF; devices, fixtures, and equipment in EA.
  • Typical waste factors run 5–10% for conduit and wire, 2–5% for devices and fixtures.
  • The most common costly miss is omitting firestopping at rated penetrations and support steel.

Accubid and Trimble are the two estimating platforms most electrical contractors run. If you already own a license, the bottleneck is rarely the software — it is the takeoff feeding it. We produce that takeoff. You send the electrical drawings, the spec book, and any panel schedules or fixture schedules you have. We return quantities by CSI MasterFormat division, with a marked-up plan set so your estimator can audit every count.

Deliverable
Excel estimate + marked-up PDF plans
Organized by
CSI MasterFormat section
Turnaround
24–48 hours for most projects
Pricing
ZIP-code-adjusted material and labor pricing
Software
Bluebeam Revu, PlanSwift, RSMeans data

The deliverable is organized to match how Accubid and Trimble jobs are built: raceway by type and size, conductors by size and count, boxes by type, devices, fixtures, panelboards, and equipment. Each line carries a unit that maps to a database item — LF for conduit and wire, EA for devices and equipment, LB for support systems, HR for labor. If your database uses assemblies, we can group the takeoff so a single assembly line pulls the conduit, wire, boxes, and fittings together.

We work in Bluebeam Revu and PlanSwift for the takeoff itself, with RSMeans data and ZIP-code-adjusted material and labor pricing behind the numbers. Most projects turn in 24–48 hours; rush is available. If you are comparing platforms, our Estimating Software We Work In page covers how we split work between Bluebeam Takeoff Services and PlanSwift Takeoff Services. For residential service work priced in Xactimate instead, see Xactimate Estimating Services.

As an electrical estimating company, we also handle outsourced electrical estimating when your team is at capacity. We can work directly from a bid package, log every RFI, and return an electrical estimate for contractors that is ready to price in Accubid or Trimble. If you need a second set of eyes on a commercial electrical estimating bid, or you are still deciding which electrical estimating software fits your shop, send the drawings and we will confirm scope before we start.

Services

What the electrical quantity takeoff covers

We take off the electrical scope shown on the drawings and specified in Division 26, 27, 28, and 33. Quantities are measured, not guessed: conduit is scaled and counted by run, wire is derived from conduit fill and home runs, and devices are counted from the floor plans and schedules. Where the spec puts work in another division, we flag it rather than absorb it.

Raceway Takeoff

EMT, IMC, RGC, PVC, and aluminum raceway measured by type and size from 1/2 in through 4 in, including fittings and terminations.

LF · EA

Conductor & Cable

THHN/THWN-2, XHHW-2, and MC cable counted by conductor size from #12 through 500 kcmil, with home-run lengths and pull points.

LF · EA

Boxes & Devices

Outlet, switch, and junction boxes, plaster rings, and device plates counted from floor plans and reflected ceiling plans.

EA

Panelboards & Switchgear

Panelboards, switchboards, and distribution equipment priced by bus ampacity, main type, branch breaker count, and AIC rating.

EA

Lighting & Controls

Interior and exterior luminaires by type from the fixture schedule, including emergency battery units and control devices.

EA

Grounding & Bonding

Ground rods, exothermic connections, grounding electrode conductors, and switchgear ground bars measured from the service and site plans.

EA · LF

Fire Alarm & Low Voltage

Fire alarm devices, FACP terminal cabinets, and structured cabling (CAT6/CAT6A) horizontal runs, patch panels, and racks.

EA · LF

Support & Firestopping

Strut, hangers, trapeze assemblies at code-required spacing, and firestopping at rated wall and floor penetrations keyed to UL systems.

LB · EA

What every accubid & trimble electrical estimating takeoff includes

  • EMT, IMC, RGC, PVC Schedule 40/80, and EMT-aluminum raceway by size from 1/2 in through 4 in
  • THHN/THWN-2, XHHW-2, and MC cable by conductor size from #12 through 500 kcmil
  • Boxes, plaster rings, and device rings counted from floor plans and reflected ceiling plans
  • Panelboards and switchboards by bus ampacity, main type, branch breaker count, and AIC rating
  • Dry-type transformers, including K-rated units where specified for harmonic loads
  • Interior and exterior luminaires by type from the fixture schedule, including emergency battery units
  • Wiring devices: duplex, GFCI, isolated ground receptacles, switches, and floor boxes
  • Grounding and bonding: ground rods, exothermic connections, and switchgear ground bars
  • Fire alarm devices and FACP terminal cabinets from Division 28 drawings
  • Structured cabling: CAT6/CAT6A horizontal runs, patch panels, and racks
  • Conduit support: strut, hangers, and trapeze assemblies at code-required spacing
  • Firestopping at rated wall and floor penetrations, keyed to UL systems
How we work

How our electrical takeoff services work an Accubid job

  1. Set up the plan setWe register the electrical sheets, the architectural floor plans, and the RCPs in Bluebeam Revu so counts land on the right sheet. We note the adopted code edition on the cover sheet — IBC, IRC, IECC, NEC, and NFPA 13 editions vary by jurisdiction, so we confirm with the local building department before applying support spacing or firestop rules.
  2. Count devices and fixturesDevices, fixtures, and equipment are counted first because they anchor the branch circuit takeoff. We count receptacles, switches, floor boxes, and luminaires from the floor plans and RCPs, cross-checking against the panel schedules. Any fixture type on the schedule with no plan symbol gets flagged as a question, not a guess.
  3. Measure raceway by runConduit is measured run by run, not by total length. We scale each homerun from the panel to the first device, then scale the branch between devices, and record the size and type from the spec. Runs above 2 in are carried explicitly — they are the most common omission when an estimator stops at 2 in.
  4. Derive conductorsWire is derived from conduit length times conductor count, with slack added at boxes, panels, and terminations. We separate feeders by size — #12 through 500 kcmil — and note where aluminum is permitted above #1/0. Ground conductors are carried separately from current-carrying conductors so the grounding and bonding line stays visible.
  5. Build the support and underground takeoffSupport is taken off from the code-required spacing for the adopted edition: strut, hangers, and trapeze assemblies by the pound. Underground duct bank is measured by the foot, with PVC, concrete encasement, and pull boxes separated. Equipment pads and floor trench are measured in CY and SF so they can be priced without conversion.
  6. Map to your databaseBefore we finalize, we map each line to the item or assembly structure your Accubid or Trimble database uses. If your assemblies pull conduit, wire, boxes, and fittings together, we group the takeoff that way. The Extension screen then carries quantities, not descriptions, so your estimator applies labor and pricing on your terms.

What we need from you

  • Electrical drawingsPower, lighting, and systems sheets, including the panel schedules and the fixture schedule. Without them we cannot derive homeruns or fixture counts.
  • Spec bookDivision 26, 27, 28, and 33 sections. The spec decides raceway type, conductor insulation, and whether firestop is carried by you or the GC.
  • Architectural backgroundFloor plans and RCPs at the same scale as the electrical sheets. Device counts are cross-checked against these, not taken from the electrical sheets alone.
  • Panel schedulesExisting or proposed. They let us verify circuit counts and breaker sizes, and they catch panelboards that appear on the one-line but not the floor plan.
  • Your database structureA sample of your Accubid item or assembly list. This is how we group the takeoff so it re-keys or imports without rework.
  • Bid date and formatTell us the bid date and whether you want Excel only or Excel plus a marked-up plan set. Rush turnaround is available for short-fuse bids.
Sample output

Sample takeoff format for electrical bid estimating

This is the shape of the deliverable. Quantities are illustrative and shown so you can see how each line maps to a CSI section and a sheet reference.

Sample format — illustrative quantities
SectionLine itemQtyUnitRef.
26 05 19THHN #12 AWG, 3 conductors per 3/4 in EMT55,200LFE-201
26 05 33EMT 3/4 in, concealed above ceiling18,400LFE-201
26 05 334 in square box, 1-1/2 in deep, with plaster ring1,250EAE-202
26 24 16Panelboard 208Y/120V, 42-circuit, 225A bus14EAE-601
26 51 002x4 LED troffer, 40W, 4000K640EAE-301
28 31 00Photoelectric smoke detector, addressable96EAE-401
26 05 26Ground rod, 3/4 in x 10 ft, copper-clad8EAE-001
26 05 33Strut support, 1-5/8 in x 1-5/8 in, with hangers1,200LFE-201
26 27 26Duplex receptacle, 20A, 125V, specification grade480EAE-202
26 28 16Safety switch, 100A, 600V, NEMA 3R6EAE-601
26 05 19THHN #1/0 AWG, 4 conductors per 2 in EMT2,400LFE-601
26 05 33EMT 2-1/2 in, exposed, with couplings and supports850LFE-601

Units of measure in the electrical takeoff

Every line carries the unit your Accubid or Trimble database expects. Mixing units is the most common cause of a takeoff that will not re-key cleanly.

ItemUnitHow it's measured
EMT, IMC, RGC, PVC conduitLFMeasured along the run centerline, counted by size and support type
THHN/THWN-2 and XHHW-2 conductorsLFConduit length times conductor count, plus slack at boxes and panels
MC cable and CAT6/CAT6ALFMeasured along the cable path, with service loops at each end
Boxes, devices, fixtures, panelboardsEACounted from floor plans, RCPs, and schedules; no partial units
Conduit and wire support systemsLBStrut, rod, and hanger weight from the support schedule or spacing
Concrete equipment padsCYLength times width times thickness divided by 27
Labor by itemHRNECA/IBEW or RSMeans labor unit applied to the quantity

Worked example: takeoff of a 120V branch circuit in EMT

The dimensions below are illustrative. We are taking off a single 20A, 120V branch circuit serving six duplex receptacles in an office area. The circuit runs from Panel LP-1 to the first device, then continues device to device. The spec calls for 3/4 in EMT with THHN conductors, concealed above the ceiling.

Step 1 — Measure the homerun. Scale the panel to the first device: 85 ft. This is the homerun. It carries three conductors (hot, neutral, ground).

Step 2 — Measure the branch between devices. Scale device-to-device runs: 22 ft, 18 ft, 25 ft, 15 ft, and 20 ft. Total branch length = 22 + 18 + 25 + 15 + 20 = 100 ft.

Step 3 — Total conduit length. Homerun + branch = 85 + 100 = 185 ft of 3/4 in EMT. This is the measured length. No waste applied yet.

Step 4 — Derive conductor length. Three conductors per conduit. Total conductor length = 185 ft × 3 = 555 ft. Add slack: 2 ft per device box (6 boxes × 2 ft = 12 ft) and 3 ft at the panel = 15 ft total slack. Total conductor length = 555 + 15 = 570 ft of #12 THHN.

Step 5 — Count boxes and devices. Six duplex receptacles = 6 EA. Six 4 in square boxes, 1-1/2 in deep = 6 EA. Six plaster rings = 6 EA. One 3/4 in connector at the panel = 1 EA.

Step 6 — Count support. EMT requires support at intervals per the adopted code edition. For this example, assume supports every 10 ft. 185 ft ÷ 10 = 18.5, round up to 19 supports. Each support is one 1-5/8 in strut clamp with a 3/8 in rod. 19 EA strut clamps and 19 EA rods.

Step 7 — Apply waste as a separate line. Conduit waste: 5% of 185 ft = 9.25 ft, round to 10 ft. Conductor waste: 5% of 570 ft = 28.5 ft, round to 30 ft. Boxes and devices: no waste; count is exact. Support: 5% of 19 = 0.95, round to 1 EA.

Step 8 — Summarize by unit.

Line itemQtyUnit
3/4 in EMT185LF
#12 THHN570LF
4 in square box6EA
Duplex receptacle6EA
Plaster ring6EA
Strut clamp19EA
3/8 in rod19EA
Conduit waste (5%)10LF
Conductor waste (5%)30LF
Support waste (5%)1EA

This is the level of detail we carry for every circuit. The quantities map directly to Accubid items or assemblies. For example, an assembly might pull 3/4 in EMT, #12 THHN, boxes, and fittings together. We group the takeoff so your database applies the correct labor unit.

Cost drivers

What drives the cost of outsourced electrical estimating

Relative impact on a typical estimate for this trade, based on estimator judgment. Select a bar for details.

Scale: 1 = minor, 5 = major relative impact. Estimator judgment, not measured data.
Relative impact 5 / 5

Drawing quality

A set with complete panel schedules and a fixture schedule takes less time than one where homeruns are implied. When the one-line and the floor plans disagree, we measure both and flag the difference rather than pick one. Missing panel schedules force us to derive circuit counts from the floor plan, which adds review time and increases the chance of a missed feeder.

Drawing quality

A set with complete panel schedules and a fixture schedule takes less time than one where homeruns are implied. When the one-line and the floor plans disagree, we measure both and flag the difference rather than pick one. Missing panel schedules force us to derive circuit counts from the floor plan, which adds review time and increases the chance of a missed feeder.

Raceway mix

EMT is the baseline. IMC, RGC, and PVC Schedule 80 carry different labor units and different support requirements, and underground duct bank adds concrete encasement and pull boxes. The mix, not the total footage, drives the takeoff time. A job that is 80% EMT and 20% RGC takes longer per foot than an all-EMT job because each raceway type has its own support spacing and fitting count.

Conductor size range

Branch work from #12 through #10 is fast to derive. Feeders from #1/0 through 500 kcmil require separate terminations, lugs, and support, and they are where aluminum-versus-copper decisions get made. Each feeder size change means a different lug kit and a different bending radius, so we count them individually rather than by total conductor length.

Systems scope

A power-and-lighting job is one takeoff. Adding Division 27 structured cabling and Division 28 fire alarm means counting devices, patch panels, and FACP terminal cabinets from separate sheets, which adds time even when the device counts are small. Each system has its own schedule and its own sheet references, so the takeoff grows in line items, not just in quantity.

Turnaround

Most projects turn in 24–48 hours. Rush turnaround compresses the review cycle, so the plan set needs to be complete at kickoff. If sheets arrive in batches, we take off what is issued and flag the rest. A rush job with missing sheets means we either hold the takeoff or issue it with an explicit list of assumptions that your estimator must price as allowances.

Underground and site work

Duct bank, manholes, and direct-buried runs are measured separately from above-ceiling raceway. Trench depth, concrete encasement, and pull box sizing all come from the site plan and the details, not the floor plans. If the civil sheets are not issued, we carry the underground scope as an allowance and flag it so you can price it separately.

Equipment and long-lead items

Switchgear, transformers, and panelboards are counted by bus ampacity, AIC rating, and breaker count. Long-lead equipment adds a pricing escalation risk that the takeoff cannot solve, but we list each item separately so your Change Order module can carry escalation. The more equipment types on the one-line, the more line items we create and the more time the takeoff takes.

Scope gaps

Scope gaps we catch in a commercial electrical estimating bid

These are the items that most often fall out of an electrical takeoff. We look for each one in a specific place in the documents.

  • Conduit and wire above 2 in. Estimators often stop the size range at 2 in and never pick up the 2-1/2 in through 4 in feeders. We scale every homerun and carry the larger sizes explicitly.
  • Grounding electrode system and bonding of metallic water, gas, and structural steel. This hides in Division 26 05 26 and on the electrical site plan. We count ground rods, exothermic connections, and ground bars by location.
  • Fire-rated penetration firestop and smoke-seal assemblies. The requirement sits in the spec and the UL systems are listed in an appendix, not on the plan. We key each rated wall and floor crossing to a UL system.
  • Seismic bracing and conduit support spacing. The spacing depends on the adopted code edition. We confirm the edition with the local building department and apply the spacing that edition requires.
  • Rooftop equipment: curb, disconnect, and lightning protection. These appear on the roof plan and in the mechanical schedule. We carry the disconnect and any lightning protection specified, and flag the curb if it is not electrical scope.
  • Temporary power, GFCI protection, and construction-phase feeders. Often shown on a site logistics sheet rather than the electrical drawings. We carry them as a separate line so they can be included or excluded at bid time.
  • Testing, commissioning, and arc-flash labeling. NFPA 70E labeling and commissioning are frequently a separate spec section. We carry them as line items rather than burying them in labor.
  • Panel schedule development and as-built markups. If the spec requires the contractor to produce panel schedules, that is labor. We carry it as an HR line so it does not disappear into overhead.
  • Coordination with mechanical and plumbing for motor connections and disconnects. The equipment schedule names the motors; the electrical drawings may not. We cross-check the mechanical schedule for horsepower and disconnect requirements.
  • Permit fees, plan review, and utility service connection charges. These are not on the drawings. We list them as a separate non-takeoff block so your bid does not absorb them silently.
  • Sales tax and freight on switchgear, transformers, and panelboards. Long-lead equipment carries freight and tax that change the bid. We carry them as separate lines tied to the equipment list.
  • Change order markup and escalation on long-lead items. Switchgear and transformers quoted today may ship in months. We flag long-lead items so your Change Order module can price escalation separately.

Raceway and wiring method comparison

The choice of raceway and conductor material changes both material cost and labor units. This table shows typical conditions and what to watch for.

Material / methodTypical useInstalled cost driverLabor unit note
EMTExposed and concealed above ceilings in dry locationsMaterial cost per LF plus fittings and supportsStandard labor unit; bending and cutting included
IMCExposed in industrial areas and parking garagesHigher material cost than EMT; same support spacingLabor similar to EMT but heavier to handle
RGCExposed in mechanical rooms and hazardous locationsHighest material cost; requires threaded couplingsHigher labor unit due to threading and cutting
PVC Schedule 40Underground direct burial and concrete encasementLow material cost; requires solvent weldingLabor includes glue and trench coordination
PVC Schedule 80Underground where subject to damageHigher material cost than Schedule 40Same labor as Schedule 40; thicker wall
THHN/THWN-2General branch and feeder wiring in conduitCopper cost per LF; insulation ratingLabor unit per conductor size; pulling tension
XHHW-2Feeders in wet locations and undergroundCopper or aluminum cost per LF; thicker insulationLabor similar to THHN; larger bend radius
MC cableBranch wiring in dry walls and above ceilingsMaterial cost per LF includes conductors and armorLower labor unit than conduit and wire
CAT6/CAT6AStructured cabling for data and voiceCable cost per LF; termination and testingLabor includes pulling, terminating, and testing
Copper feedersFeeders above #1/0 where specifiedHigh material cost; requires lugs and supportsLabor unit per size; terminations counted separately
Aluminum feedersFeeders above #1/0 where permittedLower material cost than copper; larger size for same ampacityLabor similar to copper; anti-oxidant compound required
Codes and standards

Codes and standards that affect the electrical takeoff

Model codes

The National Electrical Code (NEC) is the primary model code for electrical work. The adopted edition varies by state and jurisdiction. NEC provisions that change quantities include conduit fill calculations (Chapter 9), support spacing (Article 358 for EMT), grounding and bonding (Article 250), and box fill (Article 314). The International Building Code (IBC) and International Residential Code (IRC) govern fire-rated penetrations and seismic bracing. The International Energy Conservation Code (IECC) affects lighting power density and controls, which can change fixture counts and add occupancy sensors. NFPA 72 governs fire alarm device spacing and notification. Always confirm the adopted code edition with the local building department before applying any spacing or fill rule.

Industry standards

NECA publishes labor units used in Accubid and Trimble databases. The National Electrical Contractors Association (NECA) labor units are the basis for many electrical estimates. ASTM standards cover conduit and wire materials. UL standards, particularly UL 263 for fire-rated assemblies and UL 723 for surface burning, determine firestop requirements. NFPA 70E covers arc-flash labeling and safe work practices, which can add line items for labeling and training. For grounding, IEEE 142 provides guidance on grounding system design. These standards do not change the takeoff method, but they change what items must be counted and how they are specified.

Specification sections

Division 26 sections drive the raceway and wiring takeoff. Section 26 05 19 (conductors and cabling) specifies insulation type and size range. Section 26 05 33 (raceways and boxes) specifies conduit type by location and support requirements. Section 26 05 26 (grounding and bonding) defines the grounding electrode system and bonding requirements. Section 26 24 16 (panelboards) gives bus ampacity, AIC rating, and breaker count. Section 26 51 00 (interior lighting) and 26 56 00 (exterior lighting) list fixture types and controls. Division 27 10 00 (structured cabling) and Division 28 31 00 (fire detection and alarm) add separate device counts. Division 33 70 00 (duct banks) covers underground raceway. Read each section for submittal requirements, testing, and commissioning that may add labor.

Local amendments

Local jurisdictions adopt model codes with amendments. For example, some cities require stricter seismic bracing than the model code, or they may have local amendments to the NEC regarding conduit fill or support spacing. Utility company requirements for service connections vary and may add charges not shown on the drawings. Fire marshal interpretations of NFPA 72 can change device spacing. Because adopted editions and amendments vary, confirm the specific edition and any local amendments with the local building department before finalizing the takeoff. We note the edition on the cover sheet and flag any assumptions.

Who we provide estimates for

Who sends us electrical work

Electrical contractors

You own the Accubid or Trimble license and the labor database. You need quantities that re-key cleanly so your estimator spends time on pricing and strategy, not on counting devices from a PDF.

Electrical estimators

You are carrying three bids at once and one of them has a short fuse. A marked-up plan set lets you audit the counts in an hour instead of rebuilding the takeoff from scratch.

General contractors

You are preparing a precon budget and need a Division 26–33 number before the electrical package is bid. The takeoff gives you a defensible quantity base to compare subcontractor bids against.

Design-build teams

The design is not complete and the owner wants a number. We take off what is drawn, list the assumptions, and flag the systems that are not yet designed so the estimate carries an explicit allowance.

Owners and facility teams

You are budgeting a tenant fit-out or a service upgrade and want to see where the cost sits. The takeoff separates raceway, wire, devices, fixtures, and equipment so you can see the drivers.

Where we provide estimates

Accubid & Trimble Electrical Estimating in 20 states

Pricing is adjusted to the project ZIP code. Select a highlighted state to see the cities we cover there.

States we coverSelected
TX

Accubid & Trimble Electrical Estimating in Texas

Nation's largest construction market; Sun Belt population growth, data centers, semiconductor plants, and single-family home building.

Texas estimating services
Property types

Electrical project types and what changes in the takeoff

The takeoff method is the same, but the scope and the documents change by project type. Here is what we adjust for each.

Commercial office fit-out

Count devices from floor plans and RCPs; measure homeruns from panel schedules. Watch for furniture feeds and floor boxes.

Watch for: Verify panel schedules match the one-line; confirm fire alarm scope in Division 28.

K-12 school

Count classroom devices, corridor lighting, and gym high-bays. Watch for emergency battery units and fire alarm devices.

Watch for: Check for summer work restrictions that affect temporary power and phasing.

Healthcare clinic

Count isolated ground receptacles, emergency circuits, and nurse call rough-in. Watch for redundant feeders and UPS panels.

Watch for: Confirm Division 27 and 28 scope split; check for special grounding requirements.

Warehouse / distribution

Count high-bay fixtures by mounting height and aisle layout. Measure long homeruns and feeder sizes from the one-line.

Watch for: Watch for voltage drop on long runs; confirm disconnect locations for conveyors.

Multifamily residential

Count unit devices and panelboards by unit type. Measure riser feeders and house panel loads.

Watch for: Confirm whether unit panels are metered separately; check for fire alarm in common areas.

Data center / mission critical

Count dual feeders, busway, and grounding grid. Watch for separate UPS and generator distribution.

Watch for: Confirm AIC ratings and coordination study requirements; check for arc-flash labeling.

Retail / restaurant

Count lighting, receptacles, and equipment connections. Watch for hood and walk-in cooler disconnects.

Watch for: Verify equipment schedule for motor connections; check for grease-rated wiring.

Industrial / manufacturing

Count motor connections, disconnects, and control wiring. Measure conduit racks and cable tray.

Watch for: Confirm Division 26 vs. 23 split for motor controls; check for hazardous location fittings.

Deliverables

What you receive

  • Excel workbook organized by CSI MasterFormat division, with one tab per division and a summary tab.
  • PDF takeoff report with the same line items, quantities, units, and sheet references.
  • Marked-up plan set in Bluebeam Revu showing device counts, conduit runs, and homerun routing.
  • Assumptions and clarifications page listing what was included, what was excluded, and what we need answered.
  • Long-lead equipment list with switchgear, transformers, and panelboards called out for escalation review.
  • Database mapping notes showing how each line groups into your Accubid item or assembly structure.
  • Rush turnaround available for short-fuse bids, with the same deliverable format.
Checklist

Pre-bid checklist for electrical takeoffs

  • Confirm the adopted NEC edition and local amendments with the building department.
  • Verify that panel schedules match the one-line diagram and floor plans.
  • Check fixture schedule for types and quantities; flag any missing plan symbols.
  • Measure homeruns from panel to first device; do not assume shortest path.
  • Count all conduit sizes, including those above 2 in.
  • Derive conductor length from conduit length times conductor count plus slack.
  • Count boxes, fittings, and supports by type and size.
  • Identify fire-rated wall and floor penetrations; check firestop requirements.
  • Review Division 27 and 28 scope; separate structured cabling and fire alarm.
  • Check for underground duct bank and site work in Division 33.
  • List long-lead equipment (switchgear, transformers) for escalation review.
  • Confirm whether permit fees, utility charges, and testing are in scope.
Client reviews

What clients say about Scope Precision Estimate

10 client reviews
AW
Andrew WilsonGeneral Contractor

Highly recommended for construction cost estimating. The quantities were accurate, the pricing was well organized, and the final report was easy to review.

MD
Matthew DavisConstruction Manager

Their construction estimate was thorough and professionally prepared. It made our budgeting process much easier and helped us identify potential cost issues early.

CM
Christopher MillerResidential Builder

We needed a quick and accurate construction cost estimate, and they delivered exactly what we needed. Great attention to detail and a very responsive team.

BT
Brian TaylorProject Estimator

Fast, accurate, and dependable estimating service. They understood the project requirements quickly and provided a detailed estimate without unnecessary delays.

RW
Robert WilliamsEstimating Manager

Professional and reliable estimating service. The detailed quantity takeoff helped us reduce pricing errors and submit our proposal on time.

JR
James RichardsonConstruction Project Manager

Excellent construction estimating service. The team provided a comprehensive takeoff and cost breakdown that saved us hours of manual work.

FAQ

Accubid & Trimble Electrical Estimating questions

Can you take off a job from a PDF plan set that is not to scale?

Yes, but we need a scale. If the PDF is not to scale, we ask for a dimensioned drawing or a known dimension to calibrate. Without a scale, we can count devices and fixtures but cannot measure conduit runs accurately. We will flag any measurements that are based on an assumed scale. For example, if you provide a dimension of 20 ft between column lines, we can set that as a reference. We then verify by checking a few known distances. If no scale is available, we will note that conduit lengths are estimated and should be verified in the field.

How do you handle modular or prefabricated electrical rooms?

We take off the modular skid as a single assembly if the spec calls for it. We break out the components inside the skid only if your database requires it. We also note the interface points where field wiring connects to the skid so those runs are not missed. For example, we will list the skid as one line item with a quantity of 1 EA, and then separately list the feeder conduits and conductors that land on the skid. We also check for any required disconnects or junction boxes at the skid boundary. This ensures your estimate includes both the prefabricated unit and the field connections.

Do you provide labor hours, or just material quantities?

We provide material quantities with units. Labor hours are applied by your estimator using your Accubid or Trimble labor database. If you want, we can apply NECA or RSMeans labor units as a separate column, but we do not override your database rates. For example, if you use NECA labor units, we can add a column showing hours per item based on the NECA manual. However, we recommend you apply your own rates because they reflect your crew efficiency and project conditions. We can also provide a separate labor summary by CSI division if needed.

What is the turnaround for a 50,000 sq ft office building?

Most projects turn in 24–48 hours. A 50,000 sq ft office with typical power and lighting takes about 48 hours if the drawings are complete. Rush turnaround is available for an additional fee. If sheets arrive in batches, we take off what is issued and flag the rest. For a project of this size, we typically need the floor plans, panel schedules, one-line diagram, and fixture schedule. If any of these are missing, we will note the assumptions and proceed with what we have. We can also provide a preliminary takeoff within 24 hours if you need early numbers.

Can you take off low-voltage systems like fire alarm and data?

Yes. We take off Division 27 structured cabling and Division 28 fire alarm from the systems drawings. We count devices, patch panels, FACP terminal cabinets, and conduit. We need the riser diagram and device schedules to do it accurately. For example, we will count each data outlet, each fire alarm pull station, and each notification appliance. We also measure the conduit and cable runs between them. If the drawings do not show device locations, we will flag it and ask for clarification. We can also include testing and termination labor if specified.

How do you handle change orders during the bid process?

We take off the base scope first. If addenda or clarifications are issued, we take off the changes as a separate line item so you can see the delta. We do not blend changes into the base takeoff unless you ask us to. For example, if an addendum adds ten light fixtures, we will list them as a separate line with quantity and unit. We also note the addendum number and date. This allows you to quickly see the impact on your bid. If multiple addenda are issued, we will keep each separate or combine them if you prefer. We can also provide a summary of changes by CSI division.

What if the drawings show a panelboard but no schedule?

We flag it as a question. We can derive a typical circuit count from the floor plan, but the bus ampacity and breaker count come from the schedule. Without it, we carry an allowance and note the assumption so you can price it separately. For example, we might assume a 42-circuit panel with a 225A bus, but we will clearly mark it as an assumption. We will also list the panel as a line item with a note to verify. This way, you can adjust the estimate once the schedule is available. We recommend requesting the schedule from the design team early.

Do you include grounding and bonding in the takeoff?

Yes. We count ground rods, exothermic connections, ground bars, and bonding jumpers. We take them from Division 26 05 26 and the electrical site plan. If the spec requires a ground grid, we measure it from the details. For example, we will count each ground rod, each exothermic weld, and each ground bar. We also measure the grounding electrode conductor from the service to the ground bar. If the drawings show a ground ring, we will measure its length. We also check for bonding of metal water piping and structural steel. All these items are included in our takeoff.

How do you handle raceway above 2 inches?

We measure every homerun and carry all sizes explicitly. Many estimators stop at 2 in, which misses the larger feeders. We scale each run and record the size from the spec. This is a common scope gap we catch. For example, we will list 2-1/2 in, 3 in, 4 in, and larger conduits as separate line items with their quantities. We also note the fittings and supports required for each size. If the drawings do not clearly show the size, we will refer to the one-line diagram or spec. We also check for any special requirements for large conduits, such as expansion fittings or seismic bracing.

Can you format the takeoff to import into Accubid?

We provide an Excel workbook with columns for item, quantity, unit, and CSI section. We can also map to your item or assembly structure if you send a sample. We do not directly import into Accubid, but the format is designed for clean re-keying or import. For example, we can include a column for your item code and a column for the assembly code. We can also provide a CSV file if needed. If you have a specific template, we will follow it. Our goal is to make it easy for you to load the quantities into your estimating software with minimal effort.

What is your pricing basis for material and labor?

We use ZIP-code-adjusted material and labor pricing from RSMeans data. This means the numbers reflect local costs. We do not mark up material or labor; we provide quantities and let you apply your own pricing. For example, if you are bidding in a major city, the material costs will be adjusted to that ZIP code. We also adjust labor rates based on the location. If you prefer, we can provide bare costs without adjustments. We can also provide a breakdown by material and labor if you need it for your estimate. Our pricing basis is transparent and documented.

Do you take off temporary power and construction-phase feeders?

Yes, if they are shown on the drawings or specified. We carry them as separate line items so you can include or exclude them at bid time. They are often on a site logistics sheet rather than the electrical drawings. For example, we will count temporary power poles, spider boxes, and feeders. We will also note any temporary lighting required. If the drawings do not show them, we will ask if you want us to include an allowance. We can also take off temporary power for phased construction if the schedule requires it. These items are typically not part of the permanent scope but can affect your bid.

Do you provide electrical takeoff services for a full bid package?

Yes. Send the complete bid package — drawings, specs, addenda, and any RFI responses — and we take off Division 26, 27, 28, and 33 scope. We mark up the plan set, log each RFI that affects quantities, and return the takeoff in Excel and PDF. For a commercial electrical estimating bid, we also flag scope that sits between trades so your proposal does not carry another contractor's work.

How does electrical cost estimating differ from a material takeoff?

A material takeoff counts raceway, conductors, boxes, devices, and equipment. Electrical cost estimating adds labor hours, ZIP-code-adjusted material pricing, and support items such as hangers, terminations, and testing. We use RSMeans data behind the numbers and return HR lines for labor. If you only need quantities, we can stop at the takeoff; if you need a priced estimate, we extend it.

Can you format the takeoff to import into electrical estimating software?

Yes. We structure the takeoff so each line maps to a database item in Accubid or Trimble, with units such as LF, EA, and LB. If your database uses assemblies, we group conduit, wire, boxes, and fittings under one assembly line. The file arrives in Excel and PDF, and your estimator can audit every count against the marked-up plan set before importing.

RH

Reviewed by Ryan H.

Senior Estimator, 15+ years in construction estimating and cost planning. is a Senior Estimator with more than 15 years of professional experience in construction estimating and cost planning.

  • Construction cost estimating
  • Quantity takeoffs
  • Material and labor cost analysis
  • Bid preparation and evaluation
  • Drawing and specification review
  • Project budgeting

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Send your electrical plans for a takeoff

Send your electrical drawings, spec book, and panel schedules, and we will return a Division 26–33 takeoff in 24–48 hours, formatted for your Accubid or Trimble database.

  1. We review the set and check for missing sheets or addenda.
  2. You get a quote with a price and a delivery date.
  3. You approve and we start the takeoff.
  4. You receive the Excel estimate and marked-up plans.
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