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Forest Grove, OR

Construction estimating services in Forest Grove, OR

We produce line-item construction estimates and quantity takeoffs for Forest Grove contractors, developers and owners — organized by CSI MasterFormat division, priced with ZIP-adjusted RSMeans data, and delivered in 24–48 hours for most projects.

24–48 hours for most projectsTypical turnaround
Every CSI divisionSitework through MEP
Forest Grove ZIP pricingLocal material and labor
Price confirmed firstBefore any work starts
Census BPS · Forest Grove · 2025
Forest Grove new housing permits2025
New housing units135Change vs. 2024−9%Permitted construction value$51MAverage value per unit$378,900Rank among covered Oregon cities#19
Single-family: 135 (100%)Multifamily: 0 (0%)
U.S. Census Bureau, Building Permits Survey, 2025. Residential only.
Real permit data

What makes construction estimating in Forest Grove different?

Forest Grove pricing turns on four things: heavy winter rainfall and Willamette Valley silt soils that drive excavation, dewatering and footing design; a mostly single-family residential pipeline; Washington County permit review; and haul distances to Portland-area material suppliers and disposal sites.

  • Forest Grove permitted 135 new housing units in 2025, #19 among the Oregon cities we cover.
  • About 0% were in multifamily buildings; 100% were single-family.
  • Permit volume was down 9% compared with 2024.

Forest Grove sits at the west edge of Washington County, where the Tualatin Valley meets the foothills. The city issued 135 new privately-owned residential units in 2025, all single-family, with a permitted value of $51M and an average of $378,900 per unit — a pipeline that is almost entirely detached housing, not mid-rise. That shapes what an estimate here has to contain: footing and stem-wall concrete, framing packages, roof systems, and sitework sized for wet-season earthmoving.

We build estimates the way a superintendent reads a set. Quantities are taken from the drawings in Bluebeam Revu and PlanSwift, priced with RSMeans data adjusted to the local ZIP code, and delivered in Excel and PDF with marked-up plan sets so you can trace every number back to a sheet. If you bid work across the county, our Oregon construction estimating page covers the statewide picture, and we also run scopes in Newberg and Tualatin.

Coverage
Forest Grove and nearby Oregon communities
Deliverable
Excel estimate + marked-up PDF plans
Pricing basis
Forest Grove 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 bid you can defend line by line. We return CSI-organized quantities with waste factors, unit costs and marked-up plans, so you can adjust labor crews and still submit on time.

02

For builders. You are buying framing lumber, concrete and roofing by the truckload. We quantify from the plans, flag scope gaps between divisions, and price with ZIP-adjusted material and labor rates for Washington County.

03

For owners. You want a budget before you commit to a design. We produce a division-by-division estimate you can compare against contractor bids, with assumptions stated so nothing is buried.

Forest Grove by the numbers

Forest Grove's residential construction pipeline

Select a bar to compare Forest Grove with the largest Oregon markets we cover.

135New housing units, 2025
1.4%Of all units in the Oregon cities we cover
$51MPermitted residential value
0%In multifamily buildings
New housing units permitted in 2025. Source: U.S. Census Bureau, Building Permits Survey.
This city

Forest Grove

135 new housing units in 2025 (-9.4% vs 2024).

135 single-family · 0 multifamily (0%).

A single-family pipeline in a wet-soil valley

The 2025 permit data tells a clear story: 135 new residential units, every one of them single-family, zero multifamily, and a -9% change from 149 units in 2024. Permitted value was $51M, averaging $378,900 per unit. For a bidder, that means the work in Forest Grove is detached housing on individual lots — foundation and flatwork packages, framing, roofing, siding and MEP rough-in — not the podium or wrap construction you see closer to Portland. Multifamily share here is 0%, so a multifamily estimate built from a metro-average cost model will miss. Forest Grove ranked 19 of 25 among the covered state cities by units and accounted for 1.4% of the 9,431 covered state total, so it is a steady but secondary market. Our residential estimating services are built for exactly this mix.

Washington County review and wet-season sitework

Forest Grove projects go through Washington County and city review, and the adopted code editions and local amendments are set locally — confirm the current edition with the building department before you price. The bigger cost driver is ground conditions. Willamette Valley soils hold water, and excavation, backfill, footing drains and temporary erosion control carry more weight in the budget here than in drier parts of the state. Winter rainfall compresses the earthwork season, so a sitework package priced on dry-season productivity will underrun. We separate sitework, concrete and foundation scopes so you can see where the wet-weather exposure sits; our sitework estimating services and foundation estimating services pages show the line items we carry. Contractors working the wider valley often compare notes with our Woodburn and Wilsonville pages.

Services

Construction estimating services in Forest Grove

Every scope below is taken off your drawings, priced with ZIP-adjusted RSMeans data, and delivered with marked-up plan sets.

Residential takeoff

Full single-family takeoffs for Forest Grove infill and subdivision lots, division by division.

EA · SF · LF

Sitework and grading

Cut, fill, stripping, haul-off and erosion control sized for wet Willamette Valley soils.

CY · SY · LF

Foundation and concrete

Footings, stem walls, slab-on-grade and flatwork quantified with formwork and rebar.

CY · SF · TON

Framing packages

Floor, wall and roof framing with plate counts, headers and typical waste factors.

LF · BF · EA

Roofing systems

Sheathing, underlayment, flashing and shingle quantities for steep-slope Oregon roofs.

SQ · LF

MEP rough-in

Plumbing, electrical and HVAC rough-in counts coordinated with the framing takeoff.

EA · LF · TON

Commercial scopes

Tenant improvements and light commercial work along the Pacific Avenue corridor.

SF · EA

Bid review

Second-pass check of a subcontractor bid against our quantities before you submit.

LS · EA
Who we provide estimates for

Who sends us Forest Grove plans

General contractors bidding Washington County subdivisions

You are pricing 135 single-family units against three or four competitors. We return division-by-division quantities with waste factors so your bid holds up at buyout.

Framing and shell subcontractors

Forest Grove's permit mix is detached housing, so lumber, sheathing and truss packages carry the bid. We count plates, headers and blocking from the plans instead of the sales sheet.

Concrete and foundation crews

Footings, stem walls and slab-on-grade drive your ticket on valley-floor lots. We take off form area, rebar tonnage and cubic yards by pour sequence, not by rule of thumb.

Roofing contractors

Steep gable roofs and wet-season schedules make squares, underlayment and flashing details the difference between profit and a callback. We quantify from the roof plan and elevations.

Owners and developers budgeting before design is final

You need a number to take to a lender or a partner. We build a division-level budget from schematic drawings with assumptions written down, so you can compare it to contractor bids later.

Architects and designers checking cost during design

A square-foot target does not survive a framing takeoff. We give you quantities by assembly so you can adjust wall types, roof pitch or window packages while changes are still cheap.

Where we provide estimates

Forest Grove areas and nearby communities we cover

We take off plans for projects in Forest Grove and across the Tualatin Valley, from in-town infill to acreage west of the city limits. If your site is in Washington County, we can price it.

Forest Grove and immediate surroundings

  • Downtown Forest Grove
  • Pacific University area
  • Forest Gale Heights
  • Highway 47 corridor
  • Gales Creek Road area

West Washington County

Property types

Types of Forest Grove properties we estimate

The 2025 permit data shows 135 new privately-owned residential units in Forest Grove, all single-family, with zero multifamily. Estimates here lean toward detached housing, its sitework, and the small commercial and institutional work that supports it.

Single-family detached homes

The core of the local pipeline. We take off footing and stem-wall concrete, floor and wall framing, roof framing and sheathing, insulation, drywall and finishes, priced by ZIP-adjusted material and labor rates.

Watch for: Waste factors on lumber and panel goods; window and door schedules.

Custom and acreage homes

Larger lots west of town mean longer driveways, well and septic coordination, and deeper utility runs. We quantify sitework separately from the structure so you can see which scope is moving the number.

Watch for: Trench lengths, rock excavation, and septic field quantities.

Small commercial and retail

Downtown storefronts and Highway 47 commercial pads are typically one or two stories with masonry or tilt-up walls. We price structure, MEP rough-in and tenant improvements by division.

Watch for: Tenant improvement allowances and shell-versus-fit-out scope splits.

Agricultural and shop buildings

Pole barns, equipment shops and hay storage are common on the valley's edge. We take off posts, trusses, metal skin and slab, and separate engineered from non-engineered portions of the package.

Watch for: Slab thickness, anchor bolt layout, and door openings.

Additions and remodels

Second-story additions, kitchen gut rehabs and converted garages make up a steady share of local work. We quantify new work and flag where existing construction forces extra framing or MEP tie-ins.

Watch for: Demo quantities, temporary weather protection, and matching existing finishes.

Institutional and civic work

Schools, churches and city facilities in the Forest Grove area follow public bid rules. We organize quantities by CSI division so you can map them to a bid form or a schedule of values.

Watch for: Prevailing wage assumptions and alternates listed in the bid documents.

Local factors

What changes a construction estimate in Forest Grove

Two houses on the same street can price differently here, and it is usually site conditions, code requirements or the calendar rather than the drawings. These are the drivers we check before we send a number.

Permitting and code review

Forest Grove reviews building permits through the city, and Washington County handles some elements outside the city limits. Oregon adopts the IBC and IRC with state amendments, and the adopted edition changes on a cycle, so confirm the current edition with the building department before you price. Plan review comments on energy, egress and structural details can add scope after bid.

City of Forest Grove building department · Washington County · Oregon Building Codes Division

Soils and foundation design

Much of the Tualatin Valley floor carries silt and clay with seasonal high groundwater, while the foothills west of town have shallow soils over bedrock. Footing depth, drain tile and sometimes over-excavation change the concrete and excavation quantities. A geotechnical report is the cheapest document you can buy before pricing foundations.

Geotechnical report · footing and stem-wall takeoff · drain tile

Wet-season weather

Rain from October through May affects earthwork, concrete curing and roofing schedules. You pay for gravel working pads, temporary erosion control and sometimes heated enclosures. We separate weather-dependent scopes in the estimate so you can see what a spring start does to the budget.

Erosion control plan · concrete cure time · temporary heat

Labor and crew availability

Forest Grove draws from the same Portland-area labor pool as Hillsboro and Beaverton, and framing and concrete crews book out in the busy months. The labor component of an estimate here should reflect realistic crew sizes and overtime assumptions, not a statewide average. ZIP-adjusted RSMeans data gets you close; your own crew rates close the gap.

RSMeans data · crew rates · overtime assumptions

Sitework and storm drainage

Sloped lots and clay soils mean retaining walls, footing drains and storm lines sized to the local drainage requirements. Driveway grades and utility trench depths add excavation and backfill quantities that a structural takeoff will not show. We take off sitework separately so it does not get buried in the building number.

Sitework estimating · retaining walls · storm drainage

Material logistics and haul distance

Forest Grove is roughly 25 miles west of Portland, so most material comes in by truck from the metro area. Delivery charges, minimum order quantities and lead times on trusses and windows affect the estimate, particularly on small jobs where a full truckload is not justified. We note assumed haul and delivery in the basis of estimate.

Supplier lead times · delivery charges · basis of estimate
Forest Grove estimating guide

How Forest Grove conditions show up in a takeoff, trade by trade

Forest Grove sits in Washington County, where wet winters, clay-heavy soils and a steady flow of single-family permits shape what a real takeoff has to carry. Here is how that shows up trade by trade.

Sitework and drainage

Washington County's winter water table and silty clay subgrade mean your sitework takeoff needs more than cut and fill. We measure stripping depth, structural fill import, and underdrain runs in linear feet, then add trench excavation for storm laterals and drywells sized to the local stormwater manual. Because the city's storm system ties into the Tualatin River watershed, we carry catch basin, cleanout and riprap quantities separately so you can see what the civil plan actually requires. If your project includes a private road or parking, we price base rock by the ton with a typical 10–15% compaction allowance. See our full sitework estimating services for the line items we include.

Framing and lumber

Framing packages in Forest Grove are almost all wood-frame, so we take off wall, floor and roof framing by member size and length, not by board foot alone. We count plates, studs at 16 inches on center, headers, joists, rafters, sheathing and blocking, then add a typical 5–10% waste for cuts and culls. Engineered lumber is listed separately because lead times and pricing move differently from dimensional stock. Roof pitch and overhang drive rafter length, and we show that math so you can check it against your truss or stick-frame quote. Our framing estimating services page shows the format we deliver.

MEP rough-in

Mechanical, electrical and plumbing rough-in is where Forest Grove bids most often drift. We count plumbing fixtures, water and drain lines by diameter and linear foot, gas piping, HVAC equipment, ductwork by pound and linear foot, registers, electrical devices, fixtures, panelboards and branch circuits. Because Oregon adopts the current NEC and state plumbing and mechanical codes, we tag each line to the code family and let you confirm the adopted edition with the city building department. Permit and inspection line items sit in Division 01 so they are not buried in a trade. Our MEP estimating services page lists the divisions we cover.

Concrete and foundations

Most Forest Grove homes sit on stem-wall or slab-on-grade foundations with footings bearing on native soil or engineered fill. We take off footing length and width from the foundation plan, convert to cubic yards with a typical 5–10% waste, and list formwork by square foot of contact area. Flatwork is measured separately: driveway, walkway and patio slabs in square feet at 4-inch and 5-inch thicknesses, with control joints and vapor barrier as their own lines. Because winter pours here are common, we note cure and protection items in the general requirements rather than hiding them in the concrete price. Our foundation estimating services break this out in detail.

Roofing and envelope

The Willamette Valley gets steady rain from October through May, so roof and wall assemblies here have to handle long wet cycles. We measure roof area by slope and add typical waste factors by material: 10% for architectural shingles, 15% for standing seam metal with hips and valleys. Underlayment, ice-and-water membrane at eaves and valleys, drip edge, flashing and ventilation are separate line items. Wall envelope takeoff includes house wrap or fluid-applied WRB, window and door flashing, and siding by square. These items are easy to leave out when a bid is assembled quickly, so we list them explicitly. Our roofing estimating services cover both steep-slope and low-slope assemblies.

Scope gaps we see on Forest Grove bids

  • Underdrain, footing drain and storm laterals left off because they sit on the civil sheet, not the architectural set.
  • Rock excavation and over-excavation for unsuitable subgrade carried as an allowance instead of a measured quantity.
  • Winter concrete protection, curing compound and temporary heat omitted from Division 03 and Division 01.
  • Roof underlayment, ice-and-water membrane and drip edge excluded when roofing is priced by the square only.
  • Framing waste, blocking and shear nailing left out of the carpentry bid, then added back as a change order.
  • Permit fees, plan review and special inspections missing from general requirements on Washington County jobs.
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 Forest Grove project

  1. Read the full setArchitectural, structural, civil and MEP drawings, the geotechnical report and every addendum.
  2. Check Forest Grove 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 Forest GroveMaterial 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: Forest Grove single-family residence

Sample format — illustrative quantities
SectionLine itemQtyUnit
03 30 00Footing concrete, 24 in x 12 in18.5CY
03 30 00Slab-on-grade, 4 in, 2,400 SF29.6CY
03 10 00Formwork, footing and stem wall1,240SF
05 10 00Wall framing, 2x6 studs at 16 in OC2,180LF
06 10 00Floor and roof framing, joists and rafters3,420LF
07 30 00Architectural shingles, 6:12 pitch32.4SQ
22 10 00Plumbing rough-in, PEX and PVC1,860LF
31 20 00Structural fill, imported and compacted145CY

Worked example: footing concrete for a Forest Grove single-family home

This example uses a simple rectangular footing run to show how a takeoff moves from dimensions to order quantity. The dimensions are illustrative; your plan controls.

Assume a continuous footing 24 inches wide by 12 inches deep, running 180 linear feet around the perimeter, plus two interior bearing runs of 22 feet each.

StepCalculationResult
Total footing length180 LF + 22 LF + 22 LF224 LF
Cross-section area2.0 ft x 1.0 ft2.00 SF
Net volume224 LF x 2.00 SF448 CF
Convert to cubic yards448 CF ÷ 2716.6 CY
Waste factor (typical 8%)16.6 CY x 1.0817.9 CY
Order quantityround up to whole yard18 CY

A few things an estimator checks before that number goes to a supplier. First, confirm the footing width and depth on the foundation plan, because a 30-inch footing at the same depth changes the volume by roughly 25%. Second, separate any stepped or thickened sections under posts and chimneys; they are easy to miss when you take off only the perimeter. Third, add formwork by contact area, not by volume, so the carpenter can price it.

In Forest Grove, footing concrete often pours in cool, wet weather. That does not change the volume, but it does change the mix and the protection line items, so we carry curing compound and temporary heat in Division 03 or Division 01 rather than assuming the concrete subcontractor includes them. If the geotechnical report calls for over-excavation, we measure that separately as structural fill and disposal. If you want the same breakdown on your plans, send them through our get an estimate page.

FAQ

Forest Grove construction estimating questions

What kind of projects do you estimate most in Forest Grove?

Most of the work we see here is single-family residential: custom homes, infill lots and small subdivisions in and around Washington County. We also take off light commercial buildings, tenant improvements and agricultural structures on the edges of town. Because the city issued 135 new privately-owned residential units in 2025, all single-family, the plan sets tend to be house plans and small site packages rather than large multifamily. If your project is commercial or industrial, the same division-by-division format applies; the trade mix just shifts.

Where does your Forest Grove permit data come from?

The permit figures on this page come from the U.S. Census Bureau Building Permits Survey for 2025. That survey counts new privately-owned residential units only, so it does not include commercial, industrial or public projects, and it does not count remodels. Forest Grove issued 135 units in 2025, down from 149 in 2024, and all 135 were single-family. The reported permitted value was $51M, an average of $378,900 per unit. Use these as context for market activity, not as a cost basis for your specific project.

How does Forest Grove's wet climate affect a takeoff?

It affects several divisions at once. Sitework carries more underdrain, erosion control and temporary stabilization because ground stays wet from fall through spring. Concrete work picks up curing and protection items. Roofing and envelope takeoffs include underlayment and flashing details that dry markets sometimes treat as optional. None of these change the measured geometry, but they change the line items you need to carry so the bid matches what the crew will actually install. We flag weather-driven items in the takeoff so you can decide whether to price them or exclude them in writing.

Do you price from RSMeans or from local quotes?

We build unit costs from RSMeans data adjusted to the project ZIP code, then cross-check the major trades against current supplier and subcontractor pricing where you provide it. That matters in Forest Grove because material haul distance from Portland-area suppliers and local labor availability both move the number. If you have quotes for concrete, lumber or mechanical, send them and we will reconcile the takeoff against them. The deliverable shows quantities and unit costs in Excel so you can swap in your own pricing without rebuilding the takeoff.

What do you need from me to start a Forest Grove estimate?

Send the complete plan set, including architectural, structural, civil, and mechanical, electrical and plumbing sheets, plus any specifications and the geotechnical report if one exists. If the project is a remodel, a scope narrative helps because existing conditions are not always drawn. Tell us the project address or ZIP code so we can adjust material and labor pricing, and note any bid date or rush requirement. Most estimates go back in 24–48 hours, and rush turnaround is available when your bid deadline is tight.

Can you estimate just one trade instead of the whole building?

Yes. Many contractors send us only the scope they are bidding, and we take off that division alone. Common single-trade requests here are concrete and foundations, framing and lumber, roofing, and MEP rough-in. We still deliver the takeoff in Excel and PDF organized by CSI MasterFormat division, with marked-up plan sets so you can see exactly which sheets and dimensions produced each quantity. If you later want the rest of the building, the same model extends without redoing the work.

How do you handle Washington County code and permit items in the estimate?

We list permit fees, plan review, special inspections and any required testing as separate line items in Division 01 rather than burying them in a trade. Code-driven scope, such as seismic detailing, energy code envelope requirements or stormwater controls, is tagged so you can see it. We do not guess which code edition the city has adopted; Oregon updates its statewide codes on a cycle, and local amendments vary, so confirm the adopted edition and any Washington County requirements with the building department before you finalize your bid.

Do you cover nearby cities as well?

Yes. We estimate projects across the Portland metro and the northern Willamette Valley, including Tualatin, West Linn, Woodburn, Newberg, Wilsonville and Happy Valley. Pricing is adjusted by ZIP code, so a takeoff in Forest Grove reflects local material and labor conditions rather than a statewide average. If you build in more than one of these cities, the same format carries across, which makes it easier to compare bids and track quantities from one project to the next.

What does the marked-up plan set include?

Every takeoff comes with the plan sheets marked up in Bluebeam Revu. You see the dimensions, counts and color-coded areas that produced each line item, so you can audit the quantity instead of trusting a spreadsheet. That matters on Forest Grove jobs where a footing step or a drainage run is easy to miss on a busy sheet. The marked-up set and the Excel workbook are delivered together, with a PDF summary organized by CSI MasterFormat division.

How accurate are your takeoffs?

Accuracy depends on the quality of the plans and the completeness of the scope you send. We measure from the drawings, apply typical waste factors by material, and show every assumption in the workbook so you can adjust it. We do not publish an accuracy percentage because no estimator can guarantee one without knowing the project. What we can control is method: quantities traced to marked-up sheets, unit costs adjusted to the ZIP code, and scope gaps called out in writing before you bid.

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 Forest Grove project plans for a quote

Send your Forest Grove plans and we will return a division-by-division takeoff 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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