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Longmont, CO

Construction estimating services in Longmont, CO

We prepare quantity takeoffs and cost estimates for Longmont contractors, developers and owners — 24 to 48 hours on most projects, organized by CSI MasterFormat division in Excel and PDF with marked-up plan sets.

24–48 hours for most projectsTypical turnaround
Every CSI divisionSitework through MEP
Longmont ZIP pricingLocal material and labor
Price confirmed firstBefore any work starts
Census BPS · Longmont · 2025
Longmont new housing permits2025
New housing units1,200Change vs. 2024+27%Permitted construction value$253MAverage value per unit$210,500Rank among covered Colorado cities#4
Single-family: 201 (17%)Multifamily: 999 (83%)
U.S. Census Bureau, Building Permits Survey, 2025. Residential only.
Real permit data

What makes construction estimating in Longmont different?

Longmont estimating is driven by Front Range growth, 999 multifamily units permitted in 2025 (83% of the 1,200 total), expansive clay soils along the St. Vrain corridor, wind and hail exposure on the plains, and Boulder County permit review — all of which change foundation, roofing and framing quantities.

  • Longmont permitted 1,200 new housing units in 2025, #4 among the Colorado cities we cover.
  • About 83% were in multifamily buildings; 17% were single-family.
  • Permit volume was up 27% compared with 2024.

Longmont sits in Boulder and Weld counties on the St. Vrain Creek, at the north end of the Denver–Fort Collins corridor. The city issued permits for 1,200 new privately-owned residential units in 2025, up 27% from 948 in 2024, with 999 of those units multifamily. That mix — mostly apartment and townhome work alongside infill single-family — means most Longmont estimates hinge on repeated unit quantities, podium or garden-style structural systems, and tight site logistics near downtown and along the Highway 119 and Ken Pratt Boulevard corridors.

We build takeoffs from your plan set, not from a square-foot guess. Foundations are quantified by lineal foot of stem wall, cubic yard of concrete and ton of rebar; framing by piece count and board foot; roofing by square and by bundle, with waste factors typical for the material. Pricing uses ZIP-code-adjusted material and labor data, so Longmont numbers reflect the local market rather than a national average. If you are bidding work in the surrounding corridor, our Colorado construction estimating team covers it, and we also run Boulder and Greeley pages for the adjacent markets.

Coverage
Longmont and nearby Colorado communities
Deliverable
Excel estimate + marked-up PDF plans
Pricing basis
Longmont ZIP-code material and labor costs
Turnaround
24–48 hours for most projects
Software
Bluebeam Revu, PlanSwift, RSMeans data
01

For bidders. You need a defensible number before the bid date. We return a division-by-division takeoff with marked-up plans so you can see every quantity and adjust labor or markup before you submit.

02

For builders. You need quantities to buy and schedule. We break out concrete, framing, roofing and MEP by unit type or building, so your purchase orders and crew sequencing match the takeoff.

03

For owners. You need a budget before design is finished. We estimate from preliminary drawings and flag the scope gaps that most often turn into change orders on Longmont multifamily and infill projects.

Longmont by the numbers

Longmont's residential construction pipeline

Select a bar to compare Longmont with the largest Colorado markets we cover.

1,200New housing units, 2025
7.1%Of all units in the Colorado cities we cover
$253MPermitted residential value
83%In multifamily buildings
New housing units permitted in 2025. Source: U.S. Census Bureau, Building Permits Survey.
This city

Longmont

1,200 new housing units in 2025 (+26.6% vs 2024).

201 single-family · 999 multifamily (83%).

Multifamily is the volume driver

Of the 1,200 new privately-owned residential units permitted in Longmont in 2025, 999 were multifamily — about 83% — while single-family accounted for 201. The permitted value was $253M, an average of $210,500 per unit, and Longmont ranked 4th of 21 covered Colorado cities by units, holding 7.1% of the 16,921-unit state total. For bidders, that means the recurring estimate in this city is a garden-style or podium apartment building, not a one-off custom home. Unit-mix repetition rewards accurate per-unit quantities: one wrong wall type multiplied across 120 units moves the bid more than any labor rate. Our multi-family estimating services are built around that unit-type structure, and the same logic applies to townhome rows going up near the St. Vrain and in the Weld County portion of the city.

What the 27% jump means for your bid

Permits rose from 948 units in 2024 to 1,200 in 2025, a 27% increase. More concurrent projects in one city tightens concrete, framing and drywall crews, and that shows up in labor pricing and schedule duration rather than in material lists. When you estimate Longmont work, carry realistic crew availability for flatwork and structural concrete, and check whether your bid assumes winter protection — Front Range freeze-thaw cycles affect cure schedules and temporary heat. Soil conditions along the St. Vrain corridor and the city's expansive clay areas drive over-excavation and pier quantities, so a foundation estimate that assumes standard spread footings is a common miss. Confirm geotechnical recommendations and the adopted code edition with the local building department before you lock the number. Adjacent markets such as Loveland and Broomfield share crews and pricing pressure, so it pays to compare.

Services

Construction estimating services in Longmont

Eight takeoff and estimating services we run most often for Longmont projects, each delivered in CSI MasterFormat divisions with marked-up plan sets.

Sitework takeoffs

Cut and fill, over-excavation for expansive clay, utility trenching and paving quantities for Longmont sites.

CY · LF · TON

Concrete estimating

Footings, stem walls, slab-on-grade and podium decks quantified by cubic yard, form area and rebar tonnage.

CY · SF · TON

Foundation estimating

Pier, grade beam and mat quantities sized to geotechnical recommendations for Front Range soils.

LF · CY · EA

Framing takeoffs

Piece-count lumber, truss and sheathing takeoffs by unit type for Longmont apartment and townhome buildings.

PC · BF · SF

Roofing estimating

Roof squares, underlayment and flashing quantities with hail-rated material allowances for Colorado exposure.

SQ · LF · EA

MEP estimating

Plumbing, HVAC and electrical quantities by fixture, diffuser and device count across repeated unit plans.

EA · LF · TON

Residential estimating

Full-division estimates for Longmont infill and single-family permits, from foundation through finishes.

SF · EA · LS

Commercial estimating

Tenant improvement and ground-up commercial takeoffs for the Ken Pratt Boulevard and Highway 119 corridors.

SF · EA · LS
Who we provide estimates for

Who we estimate for in Longmont

General contractors

Bidding podium and garden-style multifamily along Ken Pratt Boulevard and the Highway 119 corridor, you need division-by-division quantities before bid day so your labor and markup hold up.

Multifamily developers

With 999 of Longmont's 1,200 permitted units in 2025 multifamily, your pro forma turns on repeat unit counts, amenity square footage, and parking ratios. We quantify each unit type separately.

Custom home builders

Infill and single-family work on the west side and near downtown involves small lots, mature trees, and utility conflicts. We take off foundations and framing by piece count, not square-foot averages.

Concrete and sitework subcontractors

St. Vrain Valley soils and shallow groundwater drive footing, stem wall, and flatwork quantities. We break out cubic yards of concrete, tons of rebar, and square feet of slab on grade.

Framing and roofing subs

Longmont's hail season and wind exposure make roof assemblies and sheathing nailing schedules bid-sensitive. We count studs, plates, trusses, squares, and bundles from the plans.

Owners and architects

You need a budget before construction documents are complete. We estimate from preliminary drawings and flag scope gaps that become change orders on Longmont multifamily and commercial projects.

Where we provide estimates

Longmont areas and nearby communities we cover

We estimate projects across Boulder and Weld counties, from downtown Longmont to the surrounding Front Range communities. If your project is outside these areas, our Colorado team still covers it.

Central Longmont

  • Downtown Longmont
  • Old Town
  • Kensington
  • West Side
  • Southmoor
  • North Longmont

Longmont corridors and edges

  • Ken Pratt Boulevard
  • Highway 119
  • Main Street
  • Hover Street
  • Airport Road
  • East Longmont
Property types

Types of Longmont properties we estimate

Longmont's 2025 permit mix was 83% multifamily, so most of our takeoffs here are repeat-unit apartment and townhome buildings. Infill single-family and commercial work round out the rest.

Podium multifamily

These are the 4- to 5-story wood-frame-over-concrete projects common along Ken Pratt Boulevard. We take off concrete podium, stud walls, floor trusses, and unit-by-unit finishes.

Watch for: Podium slab thickness, fire separation, and unit mix repetition.

Garden-style apartments

Three-story walk-ups with surface parking are typical in east Longmont. We quantify repeat unit types, breezeways, stairs, and site retaining walls separately.

Watch for: Building repetition, stair counts, and retaining wall lengths.

Townhomes and rowhouses

Attached product fills infill lots near downtown and the west side. We count party walls, fire-rated assemblies, and per-unit MEP rough-in by lineal foot and fixture.

Watch for: Party wall fire ratings and shared utility trenching.

Custom and infill single-family

On small lots with mature trees, foundation and framing takeoffs must account for root barriers, stepped footings, and tight staging. We count every stud, sheet, and square.

Watch for: Stepped footings, tree protection, and material staging.

Commercial and retail

Along Main Street and Highway 119, tenant improvements and small commercial buildings turn on MEP distribution, storefront glazing, and ADA restroom counts.

Watch for: MEP routing, storefront systems, and ADA fixture counts.

Light industrial and warehouse

Longmont's industrial pockets need slab-on-grade, tilt-up or metal building systems, and heavy power. We take off slab thickness, dock equipment, and service amperage.

Watch for: Slab flatness, dock counts, and electrical service size.

Local factors

What changes a construction estimate in Longmont

Longmont estimates move with code adoption, expansive soils, hail exposure, and the Front Range labor market. These are the drivers we price into every takeoff.

Code and permitting

Longmont enforces the adopted International Building Code, International Residential Code, and International Energy Conservation Code editions, plus local amendments. Energy code compliance affects envelope, insulation, and glazing quantities. Plan review timelines and permit fees vary by project type and valuation, so confirm the adopted edition and fee schedule with the Longmont Building Inspection Division before you finalize your bid.

IBC · IRC · IECC · Longmont Building Inspection Division

Soils and foundations

Parts of the St. Vrain Valley have expansive clay soils and shallow groundwater. That drives over-excavation, engineered fill, perimeter drainage, and sometimes drilled piers or caissons instead of spread footings. We quantify cubic yards of import or export, lineal feet of drain tile, and tons of rebar from the geotechnical report, not from a default detail.

Expansive clay · Geotechnical report · Drilled piers · Drain tile

Climate and hail

Longmont sits in a hail-prone corridor along the Front Range. Roof coverings, sheathing, and flashing details are bid-sensitive, and some owners specify impact-rated shingles or Class 4 assemblies. We take off roofing by square and bundle, count drip edge and valley flashing by lineal foot, and note the waste factor typical for the material.

Hail corridor · Class 4 shingles · Roof squares · Flashing

Labor market

The Denver–Fort Collins corridor keeps crews busy, and labor rates reflect that demand. Framing, concrete, and MEP trades are the tightest. We price labor by ZIP code using current data, but you should confirm crew availability and any per-diem or travel add-ons for subs coming from outside Boulder or Weld counties.

Denver–Fort Collins corridor · ZIP-code labor · Framing crews · MEP trades

Site and drainage

Longmont's flat topography and clay soils make storm drainage and grading a real cost driver. We quantify cut and fill, swales, detention volumes, and utility trenching by lineal foot. On tight infill lots, staging and spoils removal can add cost that a plan-only takeoff will miss.

Storm drainage · Cut and fill · Detention · Utility trenching

Materials and logistics

Most material comes from Denver-area suppliers, so freight is relatively short but not free. Longmont's location on I-25 and Highway 119 keeps delivery straightforward, yet specialty items like impact-rated roofing or engineered trusses may have lead times. We list material quantities by division so you can lock orders early and avoid escalation.

Denver suppliers · I-25 · Highway 119 · Engineered trusses
Longmont estimating guide

How Longmont conditions show up in a takeoff, trade by trade

Longmont sits in Boulder and Weld counties on the Front Range, where expansive clay soils, freeze-thaw cycles, and summer hail drive real quantities in every division. Here is how those local conditions change what we measure.

Earthwork and sitework

Front Range soils around Longmont include expansive clays and bentonite that swell when wet and shrink when dry. In a takeoff that means over-excavation below footings, imported structural fill, and moisture conditioning are line items, not allowances. We measure stripping depth, unsuitable material volume, and the import quantity separately, because haul-off and import are priced per cubic yard and rarely offset each other. On sloping lots near the St. Vrain River corridor, we also quantify temporary erosion control and swale grading. If your project includes site packages, our sitework estimating services break out each of these by area and depth. Confirm the geotechnical report's recommended bearing strata with the local building department before pricing foundations.

Framing and roofing

Hail is the dominant roofing cost driver on the Front Range, so we take off roof area by slope and pitch, then separate field shingle, starter course, ridge, hip, valley, and underlayment quantities. Impact-rated shingles and Class 4 assemblies are common upgrades, and they change both material and labor lines. For framing, we measure wall area, plate count, header schedules, and engineered lumber by piece, then apply a typical 5 to 10 percent waste factor on dimensional lumber. Sheathing and house wrap are measured by square foot of wall area, not by sheet count, because cutoffs vary by elevation. See our framing estimating services and roofing estimating services for the full breakdown.

Residential and multifamily finishes

With 999 multifamily units permitted in Longmont in 2025, unit-mix repetition drives finish takeoffs. We measure drywall by square foot of wall and ceiling area, then add corner bead by linear foot and texture by area. Flooring is taken off by room type with a typical 7 to 10 percent waste factor for plank and tile. Cabinets and countertops are counted by unit type, not by total, so you can compare cost per unit across a 60-unit building. Our residential estimating services and multi-family estimating services handle both single-family and podium or garden-style projects.

Concrete and foundations

Longmont's freeze depth and clay movement push foundation design toward drilled piers, grade beams, and stiffened slabs. We take off concrete by mix design and placement method: pier concrete by cubic yard with a typical 5 to 10 percent waste factor, slab-on-grade by square foot with thickened edges measured separately. Rebar is measured by bar size and linear feet, not by tonnage alone, so the schedule matches the placing drawings. Vapor barrier, capillary break, and post-tensioning hardware are separate line items. Our foundation estimating services and concrete estimating services cover these scopes division by division.

Mechanical, electrical, and plumbing

Longmont's cold winters and hot summers mean HVAC sizing follows local design temperatures, and we take off equipment by tonnage or BTU, then ductwork by linear foot and fitting count. Electrical takeoffs run by device count, home-run length, and panel schedule, with AFCI and GFCI requirements adding devices per circuit. Plumbing is measured by fixture count and developed length of supply and drain lines, with freeze protection on exterior walls. On multifamily work, we separate common-area and dwelling-unit systems. Our MEP estimating services organize these by system so your subcontractor bids align with the CSI divisions.

Scope gaps we see on Longmont bids

  • Over-excavation and import fill for expansive clay are left as allowances instead of measured quantities from the geotechnical report.
  • Roofing takeoffs omit ice-and-water shield at eaves and valleys, which is required in this climate and changes material cost.
  • Foundation plans show piers but the bid excludes pier caps, grade beams, or the vapor barrier under slab.
  • Framing bids miss engineered lumber headers, hangers, and hold-downs shown on the structural sheets.
  • MEP scopes exclude permit-required AFCI/GFCI devices and exterior freeze protection on plumbing lines.
  • Sitework bids skip temporary erosion control and construction entrance, which are separate line items on Longmont projects.
Free tool

Concrete volume calculator

Quick check for a single element. For a full drawing set, send the plans and we measure everything, including the items calculators miss.

Typical waste: 3–5% for slabs, 5–10% for footings and walls. Truck count assumes 10 CY loads; confirm load size with your ready-mix supplier.

Result
19.4CY
Net volume18.5 CY
Cubic feet500 CF
Ready-mix trucks (10 CY)2
80 lb bags (premix)875

Need the full takeoff with pricing? Upload your plans.

How it works

How we estimate a Longmont project

  1. Read the full setArchitectural, structural, civil and MEP drawings, the geotechnical report and every addendum.
  2. Check Longmont conditionsLocal code edition, site and drainage requirements, soils and any hazard rules are confirmed before the takeoff starts.
  3. Take off by CSI sectionQuantities measured and color-coded on the plans, so every number traces to a sheet.
  4. Price to LongmontMaterial and labor costs adjusted to the project ZIP code, or to your own supplier quotes and crew rates.
  5. Check and deliverA second estimator checks quantities before the estimate goes out.
Sample output

Sample takeoff: Longmont multifamily building, 60 units

Sample format — illustrative quantities
SectionLine itemQtyUnit
03 30 00Slab-on-grade concrete, 5 in.18,500SF
03 30 00Drilled pier concrete, 24 in. dia.210CY
05 12 00Structural steel grade beams14,200LB
06 10 00Wood framing, walls and floors62,400SF
07 21 00Batt insulation, R-21 walls48,700SF
07 31 00Asphalt shingles, Class 422,300SF
09 29 00Drywall, 5/8 in. Type X58,900SF
22 11 00Plumbing supply and drain lines3,850LF

Worked example: slab-on-grade concrete for a Longmont multifamily building

We are taking off a slab-on-grade for a 60-unit, four-story building in Longmont. The dimensions below are illustrative. The slab area is 200 ft by 100 ft, with a 6-inch thickness. We separate the slab from thickened edges and piers, which are priced under different CSI lines.

Step 1: Calculate slab volume. 200 ft × 100 ft = 20,000 SF. At 6 inches (0.5 ft), volume = 20,000 × 0.5 = 10,000 CF. Convert to cubic yards: 10,000 ÷ 27 = 370.4 CY.

Step 2: Add waste. Concrete waste for slab-on-grade typically runs 5 to 10 percent. Using 7 percent: 370.4 × 1.07 = 396.3 CY.

Step 3: Add thickened edges. The perimeter is 2 × (200 + 100) = 600 LF. A 12 in. × 12 in. edge adds 1 CF per LF: 600 CF = 22.2 CY. With 7 percent waste: 23.8 CY.

Step 4: Total concrete. 396.3 + 23.8 = 420.1 CY.

StepCalculationQuantityUnit
Slab area200 ft × 100 ft20,000SF
Slab volume20,000 SF × 0.5 ft ÷ 27370.4CY
Waste 7%370.4 × 1.07396.3CY
Edge volume600 LF × 1 CF ÷ 2722.2CY
Edge waste 7%22.2 × 1.0723.8CY
Total396.3 + 23.8420.1CY

We then price the concrete by mix design and placement method using ZIP-code-adjusted material and labor rates. Vapor barrier, reinforcement, and finishing are separate lines. Our concrete estimating services and foundation estimating services cover the full scope.

FAQ

Longmont construction estimating questions

Do you cover projects in Boulder and Weld counties?

Yes. Longmont straddles both counties, and we estimate projects throughout the Front Range. We also cover nearby cities including Boulder, Greeley, Loveland, and Broomfield. Each city has its own permitting and inspection process, so we organize takeoffs by the jurisdiction shown on your plans and note where code editions may differ.

How do you handle Longmont's expansive soils in a takeoff?

We read the geotechnical report and measure over-excavation, imported fill, and moisture conditioning as separate line items. We do not lump them into a general allowance. If the report recommends drilled piers or grade beams, we take those off by diameter, depth, and linear foot so your foundation bid reflects the actual design rather than a square-foot guess.

What roofing details do you include for hail-prone areas?

We measure field shingles, starter course, ridge, hip, valley, and underlayment by area or linear foot. Ice-and-water shield at eaves and valleys is a separate line, as are drip edge and ridge vent. If your specification calls for Class 4 impact-rated shingles, we price that assembly rather than a standard shingle, because the material and labor lines differ.

Can you estimate both single-family and multifamily projects?

Yes. In 2025, Longmont permitted 201 single-family and 999 multifamily units, so we see both. For single-family, we take off by room and elevation. For multifamily, we take off by unit type and multiply, which keeps cost per unit consistent across a building. Our residential estimating services and multi-family estimating services cover both formats.

How do you handle code requirements in the takeoff?

We follow the code editions adopted by the local building department, which may be the IBC, IRC, IECC, NEC, and IPC or UPC. We do not guess which edition is in force. We note where a requirement affects quantities, such as AFCI devices or freeze protection, and tell you to confirm the adopted edition with the building department before final pricing.

What is your turnaround time?

Most projects are delivered in 24 to 48 hours. Rush service is available if your bid deadline is close. We deliver Excel and PDF files organized by CSI MasterFormat division, with marked-up plan sets so you can see exactly what we measured. That format lets you drop our quantities into your own pricing sheet or send them to subcontractors.

Do you use local pricing for Longmont?

Yes. We use ZIP-code-adjusted material and labor pricing with RSMeans data as a baseline, then adjust for the Longmont market. That means concrete, lumber, and mechanical rates reflect what suppliers and subcontractors charge in this area, not a national average. We note where a line item is sensitive to local availability, such as specialty finishes or engineered lumber.

What do you need from me to start an estimate?

Send the plan set, specifications, and any geotechnical or structural reports. If you have a bid date, tell us. We also ask for the project address or ZIP code so we can apply the correct pricing adjustment. If plans are incomplete, we can estimate from what you have and list the assumptions we made so you can review them.

Where does the permit data on this page come from?

The permit figures come from the U.S. Census Bureau's Building Permits Survey for 2025. They count new privately-owned residential units permitted by the city of Longmont, not total construction value. The survey reported 1,200 total units, with 201 single-family and 999 multifamily, and a permitted value of $253 million. We use this data to understand local project mix, not to price individual jobs.

Do you estimate industrial or commercial work in Longmont?

Yes. We cover commercial and industrial scopes, including tilt-up concrete, structural steel, and process piping. The takeoff method is the same: measure by CSI division, separate material and labor, and apply waste factors by trade. For industrial projects, we pay attention to equipment foundations, embedded items, and utility connections, which are often missed in early budgets.

RH

Reviewed by Ryan H.

Senior Estimator, 15+ years 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

Send your Longmont project plans for a quote

Email your plans and specifications, and we will return a CSI-organized takeoff in 24 to 48 hours.

  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.
Upload plans for a quote
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