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Washington · WA

Construction estimating services in Washington

For Washington contractors, builders and developers bidding multifamily infill, tech campus work and port logistics projects. Estimates here turn on Seattle-area labor rates, wet-side soils and foundation design, seismic and energy code editions, and the permit pipeline that shifted hard between 2024 and 2025.

25 Washington citiesSeattle to Lacey
24–48 hours for most projectsTypical turnaround
Every CSI divisionSitework through MEP
Local pricingAdjusted to each ZIP code
Census BPS · 2025
New housing units permittedTop 6 Washington cities
Seattle4,366
Redmond1,278
Spokane Valley855
Richland777
Vancouver771
Tacoma742
U.S. Census Bureau, Building Permits Survey, 2025 annual place data.
Real permit data

What affects construction estimates in Washington?

Five drivers dominate: glacial and alluvial soils that push foundation design toward piles and over-excavation; seismic and wind provisions under the adopted IBC and ASCE 7; wet marine climate affecting envelope, roofing and sitework; high Puget Sound labor rates and prevailing wage on public work; and local permitting timelines plus state and local taxes. Confirm the adopted code edition with the local building department.

  • The 25 Washington cities we track permitted 16,004 new housing units in 2025.
  • About 73% of those units were in buildings with two or more units; 27% were single-family.
  • Seattle: the biggest pipeline: 4,366 new housing units in 2025, down 26% against 2024, with about 89% in multifamily buildings.

Washington bidding is not one market. A Bellevue multifamily podium, a Spokane Valley wood-frame apartment block and a Kennewick warehouse sit on different soils, different jurisdictions and different inspection schedules. We build estimates from the plans and specs you send, priced with ZIP-code-adjusted material and labor, organized by CSI MasterFormat division, and returned as Excel and PDF with marked-up plan sets. Most projects come back in 24–48 hours, with rush available.

We work in Bluebeam Revu, PlanSwift and RSMeans data, so quantities trace back to the sheet and detail they came from. If you are comparing self-perform against subcontractor pricing, we can break the takeoff by trade so your buyout conversations start from a real quantity, not a square-foot allowance. Send the drawings and we will tell you what is missing before you price it. For example, on a Tacoma multifamily job we will flag missing hold-down schedules, incomplete foundation details, and the difference between a 6-inch and 8-inch slab before you commit to a number. Our estimates include division-level takeoffs with waste factors and clarifications, so your bid letter states exactly what is and is not included. Whether you are bidding a single-family custom home in Sammamish or a mixed-use project in Seattle, the same discipline applies: quantities that survive scope review, labor rates that reflect the actual ZIP code, and a clear basis of estimate that protects your margin.

Coverage
25 cities across Washington
Deliverable
Excel estimate + marked-up PDF plans
Pricing basis
ZIP-code-adjusted material and labor pricing
Turnaround
24–48 hours for most projects
Software
Bluebeam Revu, PlanSwift, RSMeans data
01

For bidders. Hard-bid and negotiated proposals need quantities that survive scope review. We produce division-level takeoffs with waste factors and clarifications so your bid letter states exactly what is and is not included.

02

For builders. If you self-perform concrete, framing or drywall, you need material counts by phase, not a lump sum. We break takeoffs to match your crew sequencing and your supplier's order units.

03

For owners. Owners and developers use our estimates for pro formas, GMP validation and change-order review. The output is a line-item budget you can compare against contractor bids line by line.

Washington construction market

Washington construction market and permit volume

Demand in Washington runs through three channels: Seattle-area tech campuses, port and logistics infrastructure, and dense multifamily infill. The residential permit data below shows where that infill is landing and where the pipeline cooled.

16,004New housing units permitted, 2025
−4%vs. 16,665 units in 2024
$3.7BPermitted residential construction value
73%In multifamily buildings (2+ units)

Source: U.S. Census Bureau, Building Permits Survey, annual place-level data for 2024 and 2025. Covers new privately-owned residential units in 25 of the 25 Washington cities on this page; commercial and industrial work is not included.

Seattle: the biggest pipeline

4,366 new housing units in 2025, down 26% against 2024, with about 89% in multifamily buildings.

Tacoma: fastest growth

From 402 units in 2024 to 742 in 2025, a 85% increase.

Shoreline: biggest slowdown

Down 92% to 26 units in 2025.

Statewide totals and multifamily share

Across the 25 Washington cities in the U.S. Census Bureau Building Permits Survey, 16,004 new privately-owned residential units were permitted in 2025, down 4% from 16,665 in 2024. Multifamily accounted for 11,618 units, about 73% of the total, against 4,386 single-family units, with a permitted value of $3.7B. For bidders, that mix means most of the volume is in apartment and mixed-use scopes: podiums, post-tensioned decks, Type III and Type V over Type I construction, and the MEP rough-in density that comes with it. Single-family work is still there, but it is the smaller share of the pipeline and usually more scattered across jurisdictions.

City leaders and what the swings mean

Seattle remains the largest pipeline at 4,366 units, down 26% against 2024, with about 89% in multifamily buildings. Redmond permitted 1,278 units, up 57%, and Spokane Valley 855 units, up 80%. Tacoma grew fastest, from 402 units in 2024 to 742 in 2025, an 85% increase, while Vancouver fell 36% to 771 units and Shoreline dropped 92% to 26 units. The lesson for estimators is that backlog is moving between jurisdictions. A crew that was framed out in Seattle may be bidding Tacoma or Spokane Valley next quarter, so your estimate has to carry the right local labor and inspection assumptions rather than last year's.

2024 vs. 2025

Where Washington residential permits are rising and falling

Total new housing units by city. Sort by volume or by change to see which markets are heating up.

Seattle4,366-26%
Redmond1,278+57%
Spokane Valley855+80%
Richland777+73%
Vancouver771-36%
Tacoma742+85%
Bellingham737+38%
Pasco718-20%
Marysville700-6%
Spokane692-48%
Lacey630+254%
Bellevue566-4%
20242025
Cities we cover

Construction estimates in 25 Washington cities

Each city page covers local permit activity, the projects contractors are bidding there, and the code and site factors that change the estimate.

Seattle

#1
4,366 units in 2025
▼ 26% vs 2024
468 single-family · 3,898 multifamily

Spokane

#2
692 units in 2025
▼ 48% vs 2024
167 single-family · 525 multifamily

Tacoma

#3
742 units in 2025
▲ 85% vs 2024
62 single-family · 680 multifamily

Vancouver

#4
771 units in 2025
▼ 36% vs 2024
326 single-family · 445 multifamily

Bellevue

#5
566 units in 2025
▼ 4% vs 2024
273 single-family · 293 multifamily

Kent

#6
117 units in 2025
▼ 36% vs 2024
117 single-family · 0 multifamily

Everett

#7
565 units in 2025
▼ 5% vs 2024
130 single-family · 435 multifamily

Renton

#8
70 units in 2025
▼ 4% vs 2024
70 single-family · 0 multifamily

Spokane Valley

#9
855 units in 2025
▲ 80% vs 2024
177 single-family · 678 multifamily

Federal Way

#10
136 units in 2025
▲ 339% vs 2024
136 single-family · 0 multifamily

Yakima

#11
341 units in 2025
▲ 154% vs 2024
261 single-family · 80 multifamily

Kirkland

#12
413 units in 2025
▼ 7% vs 2024
269 single-family · 144 multifamily

Bellingham

#13
737 units in 2025
▲ 38% vs 2024
231 single-family · 506 multifamily

Kennewick

#14
530 units in 2025
▼ 9% vs 2024
364 single-family · 166 multifamily

Auburn

#15
26 units in 2025
26 single-family · 0 multifamily

Pasco

#16
718 units in 2025
▼ 20% vs 2024
319 single-family · 399 multifamily

Marysville

#17
700 units in 2025
▼ 6% vs 2024
294 single-family · 406 multifamily

Lakewood

#18
441 units in 2025
▼ 2% vs 2024
35 single-family · 406 multifamily

Redmond

#19
1,278 units in 2025
▲ 57% vs 2024
159 single-family · 1,119 multifamily

Shoreline

#20
26 units in 2025
▼ 92% vs 2024
15 single-family · 11 multifamily

Richland

#21
777 units in 2025
▲ 73% vs 2024
324 single-family · 453 multifamily

Sammamish

#22
45 units in 2025
▲ 67% vs 2024
45 single-family · 0 multifamily

Olympia

#23
129 units in 2025
▼ 54% vs 2024
67 single-family · 62 multifamily

Puyallup

#24
333 units in 2025
▲ 712% vs 2024
25 single-family · 308 multifamily

Lacey

#25
630 units in 2025
▲ 254% vs 2024
26 single-family · 604 multifamily
Single-familyMultifamily (2+ units)
Local factors

What changes a construction estimate in Washington

These six items move Washington numbers more than most bidders expect. Each one should be stated as an assumption or exclusion in your proposal.

Code edition and amendments

Washington adopts the IBC and IRC with state amendments, and the Washington State Building Code Council maintains the statewide code. Local jurisdictions may amend further, and energy provisions under the IECC and Washington's energy code affect envelope, glazing and mechanical sizing. Before you price, confirm the adopted code edition and any local amendments with the building department, because a two-cycle difference can change insulation, ventilation and seismic detailing line items.

IBC · IRC · IECC · Washington State Building Code Council

Soils and foundation design

Puget Sound lowlands carry glacial till, advance outwash and soft alluvium, and parts of the state have documented liquefaction and peat. A geotechnical report can push a shallow spread footing into over-excavation, structural fill, or piles and grade beams. Price the foundation from the geotech recommendations, not from a default detail. On the east side, expansive soils and shallow rock change excavation and backfill quantities in the other direction.

Geotechnical report · Liquefaction · Over-excavation · Structural fill

Seismic, wind and wet climate

Western Washington sits in a high seismic region, and ASCE 7 governs the lateral system, hold-downs, anchorage and diaphragm detailing that show up in your concrete, framing and drywall lines. The marine climate adds continuous water management: rainscreen assemblies, fluid-applied or sheet waterproofing, and roofing details that differ from dry markets. Wind exposure near the coast and on tall buildings changes cladding attachment and glazing pressure ratings.

ASCE 7 · Rainscreen · Waterproofing · Wind exposure

Labor rates and prevailing wage

Puget Sound labor rates are among the highest in the country, and eastern Washington runs lower, so a statewide square-foot number is not usable. On public work, Washington's prevailing wage law applies and requires certified payroll, which changes burden and administrative cost. Even on private work, union and open-shop labor availability by trade and by county drives the labor half of your estimate. Price labor by ZIP code and by trade, and note any wage determination in the basis of estimate.

Prevailing wage · Certified payroll · Labor burden · ZIP-code labor rates

Permitting, taxes and fees

Permit review timelines vary widely between Seattle, Tacoma, Spokane and the smaller cities, and carrying cost during a long review belongs in your budget. Washington has no state personal income tax, but the business and occupation tax applies to gross receipts, and sales tax applies to materials and some services, with local rates added on top. Impact fees and utility connection charges are jurisdiction-specific. Confirm current rates and fee schedules with the local building department and the Washington Department of Revenue.

Business and occupation tax · Sales tax · Impact fees · Washington Department of Revenue

Materials and logistics

Concrete, rebar, structural steel, lumber and MEP equipment all move on regional supply, and western Washington deliveries compete with port and ferry schedules. Taller multifamily work needs pump trucks, crane time and staged deliveries that a suburban single-family job does not. Add waste factors typical for the trade and material, and price long-lead equipment from current quotes rather than historical data. Freight and hoisting should be a visible line, not buried in a material markup.

Waste factor · Long-lead equipment · Freight · Hoisting
Washington estimating guide

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

Five scopes carry most of the Washington-specific risk in a takeoff: sitework and excavation, concrete and foundations, framing and drywall, roofing and envelope, and MEP. Each one is driven by soils, seismic detailing, wet-climate assemblies and local labor.

Sitework and excavation

On the Puget Sound lowlands we take off over-excavation and structural fill separately from general grading, because a geotechnical report often requires removal of soft alluvium or peat and replacement with imported, compacted material. We measure cut and fill by station or grid, not by a single site area, and price haul-off by truckload with a stated disposal site assumption. On east-side projects, expansive clays and shallow rock shift the takeoff toward rock excavation and moisture conditioning. Erosion and sediment control, temporary drainage and dewatering are separate line items, since western Washington rainfall makes them recurring costs. Confirm the geotech recommendations and any local grading permit conditions before pricing. See our sitework estimating services for a sample division 31 takeoff.

Framing and drywall

Washington's wet climate and seismic detailing change both the lumber and the drywall takeoff. We count framing by member size and length, including hold-downs, shear nailing and blocking at diaphragms, rather than by board feet alone. On multifamily Type III and Type V over Type I work, we separate the wood-frame upper floors from the concrete base and price them with different waste factors. Drywall takeoff includes moisture-resistant board at wet walls and shafts, shaft-wall assemblies, and the extra layers required at rated separations. Lumber takeoff and drywall estimating services both list fasteners, adhesives and accessories by unit, which is where most self-perform budgets leak.

MEP and interiors

Multifamily density drives the MEP takeoff. In a 200-unit Seattle or Tacoma building we count fixtures, branch wiring, panelboards, ductwork and piping by floor and by unit type, then apply a typical waste factor per material. Washington's energy code affects mechanical sizing, ventilation and envelope performance, so equipment selections should come from the current mechanical schedule, not a historical rule of thumb. Interior finishes are taken off by room and by unit type: flooring, base, paint, casework and countertops. We separate common areas, amenity spaces and parking from dwelling units, because those scopes price differently and often fall outside a subcontractor's bid. Electrical estimating services, flooring estimating services and painting estimating services each carry their own division-level detail.

Concrete and foundations

Seismic design under ASCE 7 drives foundation and slab takeoffs in western Washington: pile caps, grade beams, mat slabs, dowels, and the anchorage and hold-down embeds that show up in Division 3 and Division 5. We count pile lengths from the geotech schedule and add a stated cutoff allowance, and we measure slab thickness by area rather than assuming a default. Post-tensioned podium decks common in Seattle and Bellevue multifamily require strand, anchor and stressing quantities that a mild-reinforced slab does not. Formwork is taken off by contact area, with shoring and reshoring listed separately for elevated decks. Concrete estimating services covers the division-level breakdown.

Roofing and envelope

In western Washington we price roofing and waterproofing as a water-management system, not a single membrane line. Low-slope assemblies typically include a cover board, a fully adhered or mechanically attached membrane, and detailed flashings at parapets, scuppers and penetrations; steep-slope work includes underlayment and ice-dam detailing where the jurisdiction requires it. Rainscreen cladding, fluid-applied or sheet waterproofing at decks and balconies, and window flashing are separate items because they are the most common change-order source on Puget Sound multifamily. Wind exposure near the coast and on tall buildings changes attachment spacing and pressure-rated components. Roofing estimating services lists these by assembly.

Scope gaps we see on Washington bids

  • Over-excavation and structural fill shown on the geotech report but not carried in the sitework bid, then added as a change order after the first footing inspection.
  • Hold-downs, shear nailing and diaphragm blocking omitted from the framing takeoff because the lateral design was assumed to be 'typical' rather than read from the plans.
  • Rainscreen and balcony waterproofing excluded from the envelope scope, then priced as an extra when the building inspector requires a drainage plane.
  • Temporary dewatering and erosion control treated as a one-time cost in a state where wet-season pumping runs for months.
  • Podium deck post-tensioning strand, anchors and stressing left out when the concrete scope was priced from a mild-reinforced slab detail.
  • Common-area and amenity-space finishes left out of the interior package because the takeoff stopped at the dwelling-unit door.
  • Prevailing wage burden and certified payroll administration missing from public-work bids, which erases the labor margin.
Services in Washington

Estimating services for Washington projects

Order a single trade or the whole building. Every estimate is organized by CSI MasterFormat and priced to your Washington ZIP code.

Property types

Washington property types and what to watch in each

The 2025 permit mix was 73% multifamily across the 25 cities in the survey, so most Washington takeoff work is apartment, mixed-use and infill. Single-family and industrial scopes are smaller but carry their own pricing risks.

Multifamily infill

Seattle permitted 4,366 units in 2025, about 89% multifamily, and Tacoma grew 85% to 742 units. These are typically Type III or Type V over Type I podium buildings with tight sites and staged deliveries.

Watch for: Podium deck, hold-downs, shaft walls, balcony waterproofing, hoisting.

Mixed-use podium

Redmond permitted 1,278 units, up 57%, and Spokane Valley 855 units, up 80%, much of it retail or office over parking. The base structure and the wood frame price on different labor and formwork assumptions.

Watch for: Transfer slabs, shear walls, MEP risers, tenant improvement allowances.

Single-family and custom

Statewide single-family permits totaled 4,386 units, with Richland at 324 and Vancouver at 326. These jobs are scattered across jurisdictions, so code edition and inspection schedules vary lot by lot.

Watch for: Site-specific soils, septic or sewer connection, energy code envelope.

Industrial and logistics

Port and logistics demand runs through Tacoma, Kent, Everett and Pasco. These are slab-on-grade, tilt-up or pre-engineered buildings where the structural steel and slab takeoff dominate the number.

Watch for: Slab flatness, crane loads, fire protection, truck court paving.

Who we provide estimates for

Who sends us Washington plans

General contractors

Hard-bid and negotiated work needs division-level quantities that survive scope review, plus a bid letter that states inclusions and exclusions clearly.

Subcontractors

Concrete, framing, drywall and MEP subs use our takeoffs to convert a square-foot allowance into material counts they can order and install.

Developers

Pro formas and GMP validation need a line-item budget that can be compared against contractor bids, not a single lump sum.

Architects

Early cost checks during design help confirm that the envelope, seismic and energy code assemblies fit the owner's budget before documents are final.

Owners and facility teams

Change-order review and capital planning both depend on knowing the real quantity behind a proposed credit or addition.

Public agencies and their contractors

Prevailing wage work requires labor rates and burden that reflect the applicable wage determination, plus documentation the agency can audit.

How it works

From Washington plans to a bid-ready estimate

  1. Upload your plansPDF, DWG or a plan-room link, with specs, the geotechnical report and addenda if you have them.
  2. Get a quoteWe review the set and reply with a price and a delivery date before any work starts.
  3. We take off and priceQuantities by CSI section, priced to your Washington ZIP code or your own supplier and labor rates.
  4. Receive your estimateExcel estimate and color-coded plans, checked by a second estimator.
Deliverables

What you receive

  • Excel estimate organized by CSI division with material, labor and equipment columns
  • Marked-up PDF plans, color-coded by trade so every quantity traces to a sheet
  • Washington-specific line items where they apply, shown separately for review
  • Material lists ready for supplier quotes
  • Written scope, assumptions and exclusions to attach to your bid
Client reviews

What clients say about Scope Precision Estimate

10 client reviews
MA
Michael AndersonGeneral Contractor

The cost estimate was detailed, accurate, and easy to understand. It helped us prepare our bid confidently and stay competitive without overlooking important costs.

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.

FAQ

Washington construction estimating questions

How fast can you turn around a Washington estimate?

Most projects come back in 24–48 hours, with rush available. Turnaround depends on the completeness of the drawing set: a full architectural, structural and MEP package for a multifamily building takes longer than a single-scope takeoff, and we will tell you what is missing before we start. If you need a number for a bid deadline, send the plans and the bid date together so we can sequence the divisions.

Do you price labor by ZIP code in Washington?

Yes. We use ZIP-code-adjusted material and labor pricing, which matters in Washington because Puget Sound rates run well above eastern Washington rates. A statewide average would misprice both. On public work we also need to know the applicable wage determination, since prevailing wage and certified payroll requirements change the labor burden and administrative cost in the estimate.

What format do you deliver estimates in?

Excel and PDF, organized by CSI MasterFormat division, with marked-up plan sets so you can trace each quantity back to the sheet and detail it came from. The Excel file is structured so you can sort, subtotal and adjust by division or by trade, and the PDF serves as the basis-of-estimate record for your bid file.

Which Washington cities do you cover?

We cover Seattle, Spokane, Tacoma, Vancouver, Bellevue, Kent, Everett, Renton, Spokane Valley, Federal Way, Yakima, Kirkland, Bellingham, Kennewick, Auburn, Pasco, Marysville, Lakewood, Redmond, Shoreline, Richland, Sammamish, Olympia, Puyallup and Lacey, along with the surrounding jurisdictions. Pricing is adjusted to the ZIP code where the work is being performed, so a Tacoma bid and a Spokane bid are not built from the same labor table.

How do you handle Washington's seismic and energy code requirements in a takeoff?

Seismic provisions under the adopted IBC and ASCE 7 show up as hold-downs, anchorage, diaphragm blocking and shear-wall nailing in the framing and concrete takeoffs. Energy code provisions under the IECC and Washington's energy code affect envelope, glazing and mechanical sizing. We take these from the plans and specifications you send. Confirm the adopted code edition and any local amendments with the local building department before you finalize your bid.

Can you break a takeoff down by trade for subcontractor buyout?

Yes. We can separate the estimate into trade packages so your buyout conversations start from real quantities rather than allowances. That is common on Washington multifamily work, where concrete, framing, drywall, roofing, electrical and finishes are awarded separately. If you are comparing self-perform against subcontractor pricing, the trade breakdown shows where the labor and material split actually falls.

What do you need from me to start?

Send the architectural, structural and MEP drawings, the specifications, any geotechnical report, and the bid date. If you have a scope narrative or a list of exclusions from the owner, include it. For sitework and foundation pricing, the geotech report is the single most useful document, because it determines over-excavation, structural fill and pile quantities that no drawing shows.

How do you treat waste factors and long-lead items?

We apply waste factors typical for the trade and material, and we state them in the basis of estimate so you can adjust them to your own purchasing practice. Long-lead equipment is priced from current quotes when you provide them, and listed as a separate line so escalation and freight are visible rather than buried in a material markup.

Where does the permit data on this page come from?

The permit figures come from the U.S. Census Bureau Building Permits Survey, annual place-level data, for 2025, covering new privately-owned residential units only. That means the counts do not include commercial, industrial or public construction, and they are not project counts. Across the 25 Washington cities in the survey, 16,004 residential units were permitted in 2025, down 4% from 16,665 in 2024.

Do you offer a dedicated estimator for ongoing Washington work?

Yes. If you are bidding continuously in Washington, a dedicated construction estimator can work inside your process, using your templates and your bid calendar. That is often more efficient than sending each project out individually, because the estimator learns your labor assumptions, your supplier units and the jurisdictions you bid in. You can also outsource estimating services on a per-project basis if your volume varies.

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

Other states we cover

Send your Washington plans

Send the drawings, specifications and bid date, and we will return a division-level takeoff priced to the ZIP code, in Excel and PDF, usually within 24–48 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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