A budget estimate is a cost deliverable built before drawings are complete. You need it to test a pro forma, decide between structural systems, set a GMP ceiling, or confirm a lender's loan-to-cost ratio. We produce it from schematic design (SD) or design-development (DD) documents, a program statement, or even a code-compliant area calculation, and we state the accuracy band and the assumptions behind every line. For earlier-stage work, see our Preliminary & Conceptual Estimating.
- 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
Our takeoff is organized by CSI MasterFormat division, from Division 01 General Requirements through Division 33 Utilities. Each line carries a quantity, unit, and source reference to the sheet or spec section it came from. We use Bluebeam Revu for markup, PlanSwift for on-screen takeoff and quantity extraction, and RSMeans data adjusted by ZIP code for material pricing and labor rates. The result is delivered in Excel and PDF with a marked-up plan set, so you can trace any number back to the drawing.
This is not a bid. A budget estimate carries a wider accuracy band than a hard bid because design is incomplete. We state that band — typically -10% to +15% at DD, wider at SD — and we separate contingency, escalation, and design allowance so you can see what is known versus what is carried. If you need a number to submit against a fixed scope, our Bid Estimating Services are the right fit.
At SD, most of the number sits in a conceptual estimate built on cost per square foot benchmarks and Uniformat groupings; by DD, the takeoff shifts to CSI divisions such as Division 03 concrete, Division 05 metals, Division 09 finishes, Division 22 plumbing, Division 26 electrical, and Division 31 earthwork. That shift is why we ask for the full set, including any bid package or narrative the design team has issued. If you are an owner or developer comparing delivery methods, our Cost Planning & Feasibility Studies show how the budget estimate feeds a pro forma, and our Outsource Estimating Services cover how a budget estimating company plugs into your team.
What a construction budget estimating scope includes
We build the estimate from the documents you have, not the documents you wish you had. If civil is not issued, we carry a site allowance and flag it. If the structural system is not selected, we price two or three alternates so you can compare. Every line is traceable to a drawing, a spec section, or a stated assumption.
Division 01 General Requirements
We build general requirements from project duration, supervision, temporary facilities, and clean-up, not a percentage of hard costs.
LS · MO · EAConcrete & Structural
Footings, slabs, columns, and structural steel are measured from SD/DD drawings and priced by volume or weight.
CY · TON · SFEnvelope & Roofing
Wall assemblies, insulation, cladding, and roofing are quantified by area, including typical waste factors for cut materials.
SF · SQMEP Systems
Mechanical, electrical, and plumbing scopes are priced from schematic layouts, with allowances for unissued design.
LF · EA · TONSite Work & Utilities
Earthwork, paving, and underground utilities are measured from civil drawings or carried as a stated allowance.
CY · LF · ACContingency & Escalation
We show contingency, escalation, and design allowance as separate lines with a stated basis and percentage.
% · LSAlternates & System Options
Where design is open, we price alternates for structural, envelope, and MEP systems so you can compare cost impact.
LS · EAAssumptions & Clarifications
Every carried allowance, exclusion, and pricing source is logged in a clarifications sheet attached to the estimate.
LSWhat every budget estimating takeoff includes
- Quantity takeoff by CSI division from SD/DD drawings and outline specs
- ZIP-code-adjusted material and labor pricing using RSMeans data
- Division 01 general requirements built from project duration, not a percentage
- Contingency and escalation shown as separate lines with stated basis
- Alternates for structural, envelope, and MEP systems where design is open
- Marked-up plan set showing where each quantity was measured
- Excel workbook with formulas visible and PDF for distribution
- Assumptions and clarifications log listing every carried allowance
- Site work allowance for unissued civil drawings
- Permit and fee allowance based on jurisdiction and valuation
- Bond and insurance carried on the correct base
- Sales tax treatment by state and by division
How we build a preliminary cost estimating budget
- Document intake and gap checkWe log every sheet you send and compare it against the drawing index. Missing sheets — civil, structural, MEP — become stated assumptions. If the structural system is not selected, we ask which alternates to price. If the spec is outline only, we note which sections are performance-based and price them accordingly.
- Area and system takeoffWe measure gross floor area by level, then break out the building by system: foundation, structure, envelope, interior, MEP. At budget stage the system choice drives the total more than any unit price, so we take off each system separately. For example, we measure exterior wall by type — CMU, stud framing, curtain wall — because the cost per SF varies by a factor of three or more.
- Quantity extraction by divisionUsing PlanSwift and Bluebeam Revu, we extract quantities by CSI division. Concrete is measured in CY from footing and slab dimensions. Steel is measured in TON from member sizes and lengths. Roofing is measured in SQ with slope factor and flashing in LF. We mark each quantity on the plan set so you can see where it came from.
- Pricing and adjustmentsWe apply RSMeans data adjusted by ZIP code for material and labor. Where RSMeans does not cover a specialty item — elevators, fire pump, generator — we carry a stated allowance and flag it. Labor rates are adjusted for the project location and, where relevant, for union versus open shop. Sales tax is applied by state and by division.
- Contingency, escalation, and reviewWe separate contingency from escalation. Contingency covers design development; escalation covers the time between estimate date and mid-point of construction. Both are shown as line items with a stated basis. A senior estimator reviews the takeoff against the drawings and the assumptions log before the estimate is released. Turnaround is 24–48 hours for most projects.
- Assumptions log and clarificationsEvery carried allowance, alternate, and exclusion is logged with a reference to the drawing or spec section that triggered it. The log states what information is needed to firm up each item — for example, a geotechnical report for foundation design or a curtain wall shop drawing for envelope pricing. You get a clear list of what is known versus what is assumed, so you can close gaps before the next design phase.
What to send us
- Drawing setSD or DD drawings in PDF. Include architectural, structural, civil, and MEP if available. If a discipline is missing, we carry an allowance.
- Program or area statementGross floor area by level, building footprint, and number of stories. If you have a room-by-room program, send it — it helps us check the takeoff.
- SpecificationOutline or full spec. We need to know the quality level for finishes, MEP systems, and envelope. A performance spec changes how we price.
- Site informationGeotechnical report, survey, and civil drawings if available. Soil conditions drive excavation, dewatering, and foundation cost.
- ScheduleStart date, duration, and any phasing. General conditions and escalation both depend on the schedule.
- LocationZIP code or city. We adjust material and labor pricing by ZIP code and apply the correct sales tax.
Sample budget estimate format
This is how a budget estimate line looks in the Excel workbook. Each line carries a CSI code, a quantity, a unit, and a reference to the sheet where the quantity was measured.
| Section | Line item | Qty | Unit | Ref. |
|---|---|---|---|---|
| 03 30 00 | Slab-on-grade, 5" thick, 4000 psi, WWF | 18,400 | SF | S-101 |
| 05 12 00 | Structural steel, W-shapes, A992 | 86.4 | TON | S-201 |
| 07 21 00 | Rigid insulation, 2" polyiso, roof | 22,000 | SF | A-301 |
| 09 51 00 | Acoustic ceiling, 2x2 lay-in, grid | 14,200 | SF | A-401 |
| 23 31 00 | Ductwork, galvanized, SMACNA 2" wg | 8,600 | LB | M-201 |
| 03 30 00 | Slab-on-grade, 5" thick, 4000 psi, WWF | 18,400 | SF | S-101 |
| 05 12 00 | Structural steel, W-shapes, A992 | 86.4 | TON | S-201 |
| 07 21 00 | Rigid insulation, 2" polyiso, roof | 22,000 | SF | A-301 |
| 09 51 00 | Acoustic ceiling, 2x2 lay-in, grid | 14,200 | SF | A-401 |
| 23 31 00 | Ductwork, galvanized, SMACNA 2" wg | 8,600 | LB | M-201 |
Units of measure in a budget takeoff
A budget estimate uses the same units as a hard bid, but the quantities come from coarser drawings. Here is how we measure the main items and where the quantity comes from.
| Item | Unit | How it's measured |
|---|---|---|
| Building footprint and gross floor area | SF | Measured to outside face of exterior walls, by level, from floor plans |
| Structural excavation and backfill | CY | Volume below grade from foundation plan, plus spoil haul-off |
| Footings and slab-on-grade concrete | CY | Length × width × depth from foundation details, divided by 27 |
| Structural steel and joist/deck | TON | Member weight from framing plan, plus deck by SF of surface |
| Exterior wall assembly | SF | Elevation area by wall type, deducting openings over 10 SF |
| Roof area by system | SQ | Plan area plus slope factor, plus flashing by LF of perimeter and penetrations |
| Interior partitions | SF | Length × height by partition type, both finish faces counted separately |
| Doors and frames | EA | Counted from door schedule, hardware sets counted separately |
| Plumbing fixtures and rough-in | EA / LF | Fixture count from plumbing plans, rough-in by LF of pipe run |
| Ductwork and air terminals | LB / EA | Duct weight from MEP plans or SF of duct surface, terminals counted |
| Electrical devices and feeders | EA / LF | Device count from power plans, feeders by LF of run |
| Site paving and curb | SF / LF | Paving area from site plan, curb by LF of run, both include waste |
Worked example: elevated slab takeoff for a budget estimate
This example shows how we take off one element from a DD set — an elevated slab on a two-story building — and carry it to a budget number. All dimensions are illustrative. The point is the sequence: measure the geometry, convert units, apply waste as a separate line, then price.
Step 1 — Establish the slab area by level.
- Level 2 floor plan measures 120'-0" × 80'-0" to outside face of walls = 9,600 SF.
- Deduct the stair opening, 20'-0" × 12'-0" = 240 SF.
- Deduct the mechanical shaft, 8'-0" × 8'-0" = 64 SF.
- Net slab area = 9,600 − 240 − 64 = 9,296 SF.
Step 2 — Convert area to volume.
- Slab thickness from the section: 8" = 0.667 ft.
- Volume = 9,296 SF × 0.667 ft = 6,200 CF.
- Convert to cubic yards: 6,200 ÷ 27 = 229.6 CY.
Step 3 — Add waste and overpour as a separate line.
- Typical waste for elevated slab concrete is 5%–8%. We carry 7% as a separate line so you can see it.
- Waste = 229.6 CY × 0.07 = 16.1 CY.
- Total concrete = 229.6 + 16.1 = 245.7 CY.
Step 4 — Reinforcing steel.
- From the structural plan, the slab is #5 bars at 12" o.c. each way, top and bottom.
- Bars per direction = 80 ft ÷ 1 ft + 1 = 81 bars at 120 ft long, and 120 ft ÷ 1 ft + 1 = 121 bars at 80 ft long.
- Total linear feet = (81 × 120) + (121 × 80) = 9,720 + 9,680 = 19,400 LF per mat; two mats = 38,800 LF.
- #5 bar weighs 1.043 lb/ft. Weight = 38,800 × 1.043 = 40,468 lb = 20.2 TON.
- Typical waste for rebar is 3%–5% for laps and cutting. We carry 4% as a separate line = 0.8 TON.
- Total rebar = 20.2 + 0.8 = 21.0 TON.
Step 5 — Formwork.
- Slab edge forms = perimeter 400 LF. Shoring and decking are measured by SF of slab area = 9,296 SF.
- Formwork is priced per SF of contact area; shoring per SF of slab area.
Step 6 — Price.
- Concrete unit cost from RSMeans, ZIP-adjusted, plus pump or crane placement.
- Rebar priced per TON installed, including tying labor.
- Formwork and shoring priced per SF.
- The extended total for this element is carried to Division 03 in the budget workbook, with a reference to sheets S-201 and S-202.
What this example shows. The quantity comes from geometry, the waste is a separate line, and the unit conversion (CF to CY, LF to TON) is shown. If the slab thickness changes from 8" to 10", the concrete volume rises by 25% and the rebar may change with it — which is why we price alternates when the design is open. For a full takeoff across all divisions, see our Construction Takeoff Services.
What moves a conceptual cost estimating number
Relative impact on a typical estimate for this trade, based on estimator judgment. Select a bar for details.
Structural system
Structural steel, load-bearing CMU, and wood frame carry different costs per SF of floor area. At budget stage, the system choice can swing the total by more than any unit price. We price alternates so you can compare before the design is locked. For example, a steel frame with metal deck and concrete slab on grade will price differently than a load-bearing CMU with bar joists, and the foundation design changes with each option.
Structural steel, load-bearing CMU, and wood frame carry different costs per SF of floor area. At budget stage, the system choice can swing the total by more than any unit price. We price alternates so you can compare before the design is locked. For example, a steel frame with metal deck and concrete slab on grade will price differently than a load-bearing CMU with bar joists, and the foundation design changes with each option.
Curtain wall, storefront, and punched windows are priced per SF of wall area, and the range is wide. The ratio of glass to opaque wall, the thermal performance required by the adopted energy code, and the complexity of the geometry all move the number. We measure wall area by type from elevations, deduct openings over 10 SF, and price each assembly separately. If the envelope is not detailed, we carry an allowance based on typical ratios.
Mechanical and electrical systems are the largest cost in many buildings after structure. The choice between VAV, fan coil, and VRF, and between central plant and distributed equipment, changes both first cost and the space required. We take off ductwork by LB from MEP plans, piping by LF, and electrical devices by EA. If MEP is not designed, we carry an allowance per SF based on building type and climate zone.
Soil bearing capacity, depth to groundwater, and the amount of rock excavation drive foundation and earthwork cost. If the geotechnical report is not available, we carry an allowance and flag it as a risk item. We measure excavation in CY from the foundation plan and add backfill and spoil haul-off. Dewatering and shoring are carried as separate line items when the water table is high or the excavation is deep.
A longer schedule increases general conditions — supervision, temporary facilities, temporary utilities. Escalation covers material and labor price movement between estimate date and construction mid-point. Both are stated separately. We build Division 01 from the project duration, not a percentage, and we apply escalation using published indices for the project's ZIP code. A 12-month schedule will carry more general conditions than a 6-month schedule for the same building.
Labor rates, material prices, and sales tax vary by ZIP code. We adjust RSMeans data to the project location and apply the correct tax treatment by division. For example, some states tax materials only, some tax labor, and some have exemptions for certain divisions. We also adjust labor rates for union versus open shop and for prevailing wage if the project is publicly funded. The location factor can move the total by 10% or more.
The level of design development directly affects the accuracy band and the contingency carried. At SD, we may be pricing from a program and a site plan; at DD, we have floor plans, elevations, and outline specs. The more complete the design, the narrower the accuracy band and the lower the contingency. We state the design phase in the basis of estimate and adjust the contingency accordingly. Missing disciplines, such as civil or structural, increase the allowances carried.
Common scope gaps in outsourced budget estimating
These are the items that most often go missing when a budget estimate is built in-house from incomplete drawings. We catch them by checking the drawings against a standard checklist and by asking about the items that are not shown.
- General conditions carried as a percentage instead of a duration-driven line item. A 6% carry on a 12-month project may be half of what is needed. We build Division 01 from the schedule.
- Escalation and contingency shown as one number with no stated basis or mid-point date. We separate them and state the basis, so you can adjust as the design progresses.
- Site utilities and offsite improvements omitted because civil drawings are not issued. We carry a site allowance and flag it as a risk item to be refined when civil is available.
- Temporary heat, power, and site fencing during a winter or long-duration schedule. These are Division 01 items that depend on the schedule, not the building area.
- Specialty items without a basis: elevators, fire pump, generator, dock equipment. We carry a stated allowance and note what information is needed to firm it up.
- Permit fees, plan review, and utility connection charges. These vary by jurisdiction and are often omitted. We carry an allowance based on valuation and the local fee schedule.
- Testing, inspection, and special inspection allowances. These are required by code for structural steel, concrete, and welding, and they are not part of the trade contract.
- Hazardous material abatement and unforeseen existing conditions. In renovation, we carry an allowance if the survey is not available, and we flag it for a separate abatement contract.
- Owner-furnished equipment and its installation scope. We list what is assumed to be owner-furnished and what installation labor is carried in the estimate.
- Sales tax treatment on materials by state and on which divisions. Some states tax materials only, some tax labor, and some have exemptions for certain divisions.
- Bond and insurance rates applied to the wrong base. We apply them to the correct contract value and show the calculation.
- Window washing, final cleaning, and closeout documentation. These are Division 01 items that are often left out of a budget estimate.
System comparison at budget stage
At budget stage, the system choice drives the total more than any unit price. We price alternates so you can compare before the design is locked.
| System | Unit | What drives the cost | What changes the quantity |
|---|---|---|---|
| Structural steel frame | TON | Member weight, connection complexity, fireproofing | Bay size, floor loading, and lateral system |
| Load-bearing CMU | SF of wall | Wall height, grout spacing, reinforcing | Opening size and count, and wall length |
| Wood frame | SF of floor | Span, sheathing, and fire separation | Number of stories and unit layout |
| Curtain wall | SF of wall | Glass type, thermal performance, and geometry | Vision-to-spandrel ratio and wall area |
| Storefront | SF of wall | Frame depth, glass, and door integration | Opening size and count |
| Punched windows | SF of wall | Frame type, glazing, and flashing | Window count and wall area |
| Tilt-up concrete | SF of wall | Panel thickness, reinforcing, and erection | Panel size and count, and wall area |
| PEMB | SF of floor | Span, bay spacing, and crane loads | Building dimensions and eave height |
Codes and standards that change a budget estimate
Model codes
The model codes set the minimum requirements that drive quantities. The IBC governs occupancy classification, construction type, allowable area, and height — which in turn drive the structural system, fire separation, and egress. The IECC sets envelope thermal performance, which changes wall and roof assembly thickness and cost. The NEC sets electrical device counts, feeder sizing, and grounding. The IPC or UPC sets plumbing fixture counts and pipe sizing. NFPA 13 sets sprinkler coverage and whether a fire pump is required. Each of these changes the takeoff, so we read the adopted edition and the local amendments before pricing. Confirm the adopted edition with the local building department.
Industry standards
Industry standards define how materials are tested and installed, and they change the cost basis. ACI 318 governs concrete strength and reinforcing details. ASTM standards cover steel, concrete, and roofing materials. SMACNA defines duct construction and pressure class, which changes duct weight and gauge. GA-216 covers gypsum board application. NRCA details roofing systems. These standards appear in the specification and determine what we price — for example, a SMACNA 2" wg duct is lighter than a 4" wg duct, and the labor and material both change.
Specification sections
The specification tells us the quality level and the system. Division 03 30 00 Cast-in-Place Concrete gives the strength and finish. Division 05 12 00 Structural Steel gives the member types and connection design. Division 07 21 00 Thermal Insulation gives the R-value and thickness. Division 09 51 00 Acoustical Ceilings gives the panel type and grid. Division 23 31 00 HVAC Ducts gives the pressure class and material. We read each section to confirm what is specified, because a performance spec prices differently than a prescriptive spec.
Local amendments
Local jurisdictions adopt model codes with amendments that change cost. Some jurisdictions require more stringent energy performance, additional fire separation, or different seismic design. Others have local fee schedules that affect permit costs. The adopted edition of the code varies by state and by city, and the amendments can change quantities — for example, a local amendment requiring a higher snow load changes the structural steel weight. Always confirm the adopted code edition and any local amendments with the local building department before finalizing a budget.
Who uses a budget estimate for owners and developers
General contractors
You need a number to set a GMP or to decide whether to pursue a project. A budget estimate gives you a defensible basis for the fee and the contingency, and it shows the owner where the risk sits.
Developers
You need to test the pro forma and the loan-to-cost ratio before committing to land or design fees. A budget estimate with a stated accuracy band lets you run sensitivity on rent, cost, and schedule.
Architects
You need to keep the design within the owner's budget. A budget estimate at SD and DD gives you a cost check before the design is too far to change, and it documents the assumptions for the owner.
Owners
You need to know what the building will cost before you commit. A budget estimate separates known costs from allowances and shows the contingency and escalation, so you can see what is still open.
Subcontractors
You need to know if the budget for your trade is realistic before you commit to a schedule. A budget estimate organized by division lets you check the quantities and the scope against your own takeoff.