Residential takeoffs
Full division-by-division takeoff for detached houses, including framing, finishes and MEP counts from the plan set.
SF · EA · LFWilsonville permitted 68 new single-family units in 2025 at an average value of $547,300. We produce line-item takeoffs and estimates for builders working in Clackamas County, from foundation through MEP, organized by CSI MasterFormat with marked-up plan sets.
Wilsonville pricing is driven by Clackamas County permit and inspection requirements, Willamette Valley clay and seasonal high groundwater, the city's concentration of single-family infill at a $547,300 average permitted value, Portland-area semiconductor supply-chain labor competition, and ZIP-adjusted material pricing that differs from Portland metro averages.
Wilsonville sits at the south end of the Portland metro in Clackamas County, where new residential permits ran 68 single-family units in 2025 with no multifamily units permitted. That mix matters for takeoff: a builder here is usually pricing one detached house at a time, not a 200-unit podium, so per-unit accuracy on foundation, framing and MEP carries more weight than scale pricing. We work from your plan set and produce a division-by-division estimate you can hand to a lender or a subcontractor.
Most of our Wilsonville work is residential and light commercial, but the same labor and material basis applies to industrial and tenant improvement scopes along the I-5 corridor. If you are bidding against other builders in the metro, the difference is usually in the details — waste factors, excavation quantities, and whether the electrical and plumbing counts were taken from the plans or estimated from square footage. We take them from the plans. See our Oregon construction estimating coverage for the rest of the state, or send plans through get an estimate and we will confirm scope before pricing.
For bidders. You need a number you can defend line by line. We return Excel and PDF estimates by CSI division with marked-up plan sets, so you can see exactly where quantities came from before you sign a bid.
For builders. You are building in Clackamas County, where inspection sequencing and site conditions affect cost. We price excavation, foundation and framing from your drawings and note the assumptions that change if soil or groundwater conditions differ.
For owners. You want a budget before design is complete. We price what is drawn, flag what is missing, and give you a division-level view you can compare against contractor bids as the project moves forward.
Select a bar to compare Wilsonville with the largest Oregon markets we cover.
68 new housing units in 2025 (+17.2% vs 2024).
68 single-family · 0 multifamily (0%).
Wilsonville issued 68 new privately-owned residential units in 2025, up from 58 in 2024 — about 17% — and all 68 were single-family. Multifamily share was zero. Permitted value was $37M, or $547,300 per unit. For a bidder, that means the local pipeline is detached housing, not apartment work, and the average value per unit is high enough that finish and MEP scope is a meaningful share of the total. Wilsonville ranked 21 of 25 among covered Oregon cities by units and accounted for 0.7% of the 9,431 covered state units. If you are staffing for the year, the volume is steady but not deep, so bid accuracy on each house matters more than chasing volume. Our residential estimating services are built around that kind of per-unit work, and our multi-family estimating services apply when a project does move to attached units.
Wilsonville sits on Willamette Valley soils with seasonal high groundwater in low-lying areas near the river, and winter rainfall affects excavation, backfill and concrete schedules. Those conditions show up in the estimate as dewatering, select fill, and sometimes over-excavation — items that are easy to omit and expensive to add later. Labor competition from Portland-area semiconductor and industrial construction also affects mechanical, electrical and plumbing pricing in the metro. We use ZIP-code-adjusted material and labor pricing rather than a statewide average, so a Wilsonville estimate reflects the local market. Builders working nearby can also see our Woodburn and Newberg pages for how the surrounding submarkets compare.
We estimate residential, commercial and industrial scopes for Wilsonville and the surrounding Clackamas County market, with quantities taken from your drawings and organized by CSI MasterFormat division.
Full division-by-division takeoff for detached houses, including framing, finishes and MEP counts from the plan set.
SF · EA · LFFootings, stem walls, slab-on-grade and rebar priced for Willamette Valley soils and seasonal groundwater conditions.
CY · TON · SFStud, plate, joist, rafter and sheathing counts with typical waste factors, plus hardware and connectors.
BF · LF · EAFlatwork, driveways, patios and structural concrete with formwork and finish line items separated.
CY · SF · LFPlumbing, electrical and HVAC counts and fixture schedules, priced with Portland-metro labor rates.
EA · LF · TONRoof area, underlayment, flashing and venting quantities for steep-slope and low-slope assemblies.
SQ · LF · EAClearing, excavation, grading, utilities and erosion control for infill lots and small subdivisions.
CY · LF · ACTenant improvements, warehouse and light industrial scopes along the I-5 corridor, bid-ready by division.
SF · EA · TONWilsonville permitted 68 single-family units in 2025, all detached, so you are pricing one house at a time. We take off foundation, framing and MEP per plan so your per-unit cost holds across a small infill lot.
Hillside lots near Memorial Park and Charbonneau drive deeper foundation and retaining scopes than a flat subdivision lot. We quantify excavation, backfill and concrete separately so you can see what the grade is costing you.
Tenant improvements and small commercial shells along the I-5 corridor at Wilsonville Road need division-by-division pricing. We build the estimate in CSI format so your bid package lines up with the owner's budget sheet.
Concrete, framing, roofing and MEP subs working Clackamas County need quantities they can check against their own labor rates. Our marked-up plan sets show exactly where each count came from.
You need a hard cost number before you commit to a lot or a site plan. We price what is drawn, flag what is missing, and return it in 24–48 hours for most projects.
A division-level estimate at schematic stage tells your client whether the design fits the budget. We price from your drawings and note assumptions rather than guessing at finishes.
We estimate from your plan set regardless of where the lot sits, and we know the south-metro geography well enough to price sitework and haul distances realistically. Coverage runs across Wilsonville and the surrounding Clackamas and Marion county communities.
Wilsonville's 2025 permit activity was entirely single-family, 68 units with no multifamily, so detached residential is the core of the local takeoff work. Light commercial and industrial scopes along the I-5 corridor make up most of the rest.
The dominant permit type here. We take off foundation, framing, roof, insulation and MEP from the plan set, then apply typical waste factors to lumber, drywall and roofing so your material order matches the drawings.
Watch for: Wall heights and window schedules drive framing counts.
Lots with grade change need stepped footings, retaining walls and extra excavation. We quantify cut and fill separately from the foundation takeoff so you can see which line is moving your number.
Watch for: Retaining wall length and footing depth.
Small office, retail and service buildings along Wilsonville Road and the I-5 interchanges. We price demising walls, storefront, ceiling systems and MEP rough-in by division so the owner sees a full budget.
Watch for: Existing conditions and sprinkler modifications.
Slab-on-grade, tilt or metal building shells and mezzanine work in the industrial pockets near the interstate. We take off slab thickness, reinforcing, dock equipment and power distribution from the drawings.
Watch for: Slab flatness specs and dock count.
Garage conversions, second-story additions and detached accessory dwelling units on existing lots. Tie-in at the existing structure is where quantities get missed, so we price demolition and framing connections explicitly.
Watch for: Roof tie-in and existing wall condition.
Grading, storm drainage, sanitary sewer and water service for new lots. We quantify pipe runs, structures and aggregate from the civil sheets rather than carrying a square-foot allowance.
Watch for: Rock excavation and utility trench depths.
Two Wilsonville jobs with the same square footage can price differently because of code review, soil, drainage and how the site sits relative to the Willamette River terraces. These are the drivers we adjust for.
Oregon adopts the statewide building code, but the edition in force and local amendments change what you build. Wilsonville reviews permits through its own building division, and Clackamas County handles some unincorporated edges. Energy code requirements for envelope, glazing and mechanical ventilation move insulation and HVAC line items more than most builders expect. Confirm the adopted code edition with the local building department before you lock the estimate.
Oregon Building Codes Division · Clackamas County · Wilsonville building divisionMuch of the south metro sits on Willamette Valley alluvium and terrace deposits, with localized fill from earlier agricultural use. That means footing depth, over-excavation and structural fill quantities vary lot to lot, and a geotechnical report is the input that decides them. If you do not have one, we price a reasonable assumption and flag it as a line item you must confirm before excavation.
Geotechnical report · Structural fill · Footing depthWestern Oregon gets most of its rain between October and April, which affects excavation, concrete curing and roofing schedules. Site drainage, French drains, downspout routing and erosion control are real line items here, not allowances. We take off storm pipe, catch basins and aggregate from the civil drawings and note the seasonal assumptions behind the labor hours.
Erosion control · Storm drainage · Concrete curingPortland-metro labor rates apply in Wilsonville, and crews travel from Clackamas, Marion and Washington counties. If a project uses public funds, prevailing wage and certified payroll requirements change the labor column entirely. We price with ZIP-code-adjusted labor and call out where a wage determination is needed rather than burying it in a burden percentage.
Prevailing wage · Certified payroll · ZIP-adjusted laborWilsonville lots range from flat infill parcels to sloped sites near the river and the ridge, and some sit under overlay or planned development standards. Narrow access limits equipment size and adds to excavation and concrete placement time. We note access constraints and haul distance in the estimate because they change the sitework and foundation numbers more than the plan does.
Planned development overlay · Haul distance · Equipment accessLumber, concrete and steel come from Willamette Valley suppliers, so freight is usually short but not free, and lead times on engineered wood and electrical gear shift with regional demand. Oregon has no sales tax, which simplifies material pricing, but municipal and permit fees still land in the soft-cost column. We show material pricing separately from labor so you can re-price if a supplier quote changes.
Willamette Valley suppliers · No state sales tax · Permit feesWilsonville sits in Clackamas and Washington counties, where wet winters, variable Willamette Valley soils and a suburban-permit mix shape what a real takeoff has to carry. These are the trades where the local conditions change the quantity, not just the unit price.
Wilsonville sites commonly need stripping depths beyond the standard 6 in., because topsoil over older pasture and nursery ground runs deeper than plan sets assume. We take off cut and fill by grid from the grading plan, then separate unsuitable silt and organic material from structural fill, since haul-off and import are different line items with different unit costs. Winter work means silt fence, inlet protection and stabilized construction entrances get carried for the full rainy season, not a 30-day allowance. If the geotech report calls for over-excavation and geogrid, that quantity belongs in the takeoff before you bid, not in a change order. See our sitework takeoff scope for how we break these out.
Oregon's adopted residential code requires specific wall bracing and hold-down detailing, and those hardware counts come straight off the braced wall plan, not a per-square-foot guess. We take off studs by wall segment with plate counts, then add headers, blocking and sheathing by sheet with a typical waste factor. Floor systems get counted by joist, rim, hanger and subfloor panel. Roof framing depends on whether the design uses a truss package or site-built rafters, which changes both labor hours and lumber yield. Our framing takeoff detail explains the waste and hardware conventions we apply.
MEP is where residential and light commercial bids diverge fastest in Wilsonville, because a small tenant improvement carries fixture counts, panel schedules and vent routing that a production house plan does not. We count devices, fixtures and home runs from the plans rather than applying a cost per square foot, then verify the panel and service size against the connected load. Ductwork is measured by trunk and branch run with fittings, and plumbing by fixture and developed length. Our MEP estimating service covers both residential and light commercial packages, and we flag every item where the drawings do not show enough to price.
Footings in this part of the Willamette Valley often bear on stiff clay or dense gravel at depths that vary across a single lot, so we take off footing concrete and rebar by run length and depth rather than a flat square-foot allowance. Slab-on-grade quantities include vapor barrier, capillary break gravel and thickened edges at garage and bearing walls. Flatwork is where bids leak: driveway and sidewalk square footage, control joint linear feet and saw-cut depth are separate from the building slab. We price forming by contact area, not by cubic yard, because wall heights and step footings drive formwork far more than volume does.
Roofs here take roughly 36 to 40 in. of rain a year, so underlayment and flashing scope carries more weight than in dry markets. We measure roof area by slope-corrected plane, not footprint, then add ridge, hip, valley and eave linear feet for the flashing and edge metal takeoff. Ice-and-water membrane is taken off at valleys, penetrations and low-slope transitions where the design calls for it, measured in square feet or roll coverage. Ventilation is counted by net free area against the attic volume. Gutters, downspouts and their runs to splash blocks or storm lines are frequently omitted by bidders, so we list them explicitly.
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.
Need the full takeoff with pricing? Upload your plans.
| Section | Line item | Qty | Unit |
|---|---|---|---|
| 31 23 16 | Structural excavation, footing trenches | 184 | CY |
| 03 30 00 | Footing concrete, 24 in. wide x 12 in. deep | 31 | CY |
| 03 20 00 | Rebar, footing and stem wall, #4 and #5 | 4,860 | LB |
| 06 10 00 | 2x6 stud wall framing, 9 ft. plate | 3,140 | LF |
| 06 16 00 | Wall and roof sheathing, 7/16 in. OSB | 148 | SHT |
| 07 30 00 | Asphalt shingles, slope-corrected area | 34.2 | SQ |
| 07 26 00 | Ice-and-water membrane at valleys and pans | 610 | SF |
| 22 11 00 | PEX domestic water, fixture and run basis | 17 | FIX |
This example shows how we turn a foundation plan into a concrete quantity with waste. The dimensions are illustrative and do not describe a specific Wilsonville project; substitute your own plan dimensions and confirm the footing size and depth against the structural sheets and the geotech report.
Assume a rectangular footprint of 44 ft by 28 ft with a continuous perimeter footing, plus one interior bearing line running the 28 ft dimension. Footing is 24 in. wide by 12 in. deep, per the structural plan.
Step 1 — Perimeter run. 2 x (44 + 28) = 144 LF.
Step 2 — Interior bearing line. 28 LF.
Step 3 — Total run. 144 + 28 = 172 LF.
Step 4 — Cross-section. 24 in. x 12 in. = 2.0 ft x 1.0 ft = 2.0 SF.
Step 5 — Net volume. 172 LF x 2.0 SF = 344 CF. Divide by 27: 344 / 27 = 12.74 CY.
Step 6 — Waste. Typical waste for continuous footings runs 5 to 10 percent, driven by trench over-dig and spillage. At 7 percent: 12.74 x 1.07 = 13.63 CY, rounded to 13.7 CY.
| Step | Calculation | Result |
|---|---|---|
| Perimeter run | 2 x (44 + 28) | 144 LF |
| Interior bearing run | 28 | 28 LF |
| Total run | 144 + 28 | 172 LF |
| Cross-section | 2.0 ft x 1.0 ft | 2.0 SF |
| Net volume | 172 x 2.0 / 27 | 12.74 CY |
| With 7% waste | 12.74 x 1.07 | 13.63 CY |
Two things change this number in practice. First, step footings on a sloped lot add volume at each step that a flat-run calculation misses, so we take those off separately. Second, if the geotech report calls for over-excavation and replacement with structural fill, the concrete stays the same but the excavation, import and compaction line items grow. We carry both as separate CSI line items so you can see which one moves your bid. Send the foundation plan and geotech report and we will run the same sequence on your actual dimensions.
They come from the U.S. Census Bureau Building Permits Survey for 2025, which counts permits issued by the city itself for new privately-owned residential units only. That means additions, remodels, tenant improvements, commercial and industrial permits are not in the count. Wilsonville issued 68 such units in 2025, up from 58 in 2024, all single-family, with a permitted value of $37M and an average of $547,300 per unit. Treat the survey as a demand signal, not a measure of total construction activity in the city.
It helps, but it is not required to start. We can take off footing and slab quantities from the structural sheets alone and note the assumptions. If the geotech report later calls for over-excavation, geogrid or deeper bearing, we revise the excavation and fill line items and you see the delta before you commit. Sending both documents at once shortens the revision cycle.
We carry temporary erosion control, construction entrance maintenance, temporary heat and concrete protection as separate line items tied to the months the work actually falls in, based on the schedule you provide. If you have no schedule yet, we price them for a typical October-through-April wet season and flag them as an assumption. Bidders who fold these into a general conditions lump sum usually underprice them.
Yes. We take off light commercial and tenant improvement work by CSI division the same way we do residential, with device, fixture and home run counts for MEP rather than square-foot allowances. Plans that are not fully coordinated are common at this stage, so we list every item we could not price and tell you what drawing or specification we need to close it.
Excel workbooks and PDFs organized by CSI MasterFormat division, plus marked-up plan sets showing what we measured and where. Quantities, units and the assumptions behind each line are visible, so you can adjust waste factors or swap unit prices without rebuilding the takeoff. Most projects return in 24 to 48 hours, and rush turnaround is available.
We use ZIP-code-adjusted material and labor pricing rather than a single state or national average, drawing on RSMeans data and current supplier and subcontractor input. That matters here because freight into the Willamette Valley, local concrete and aggregate supply, and the Portland-area labor market all move unit costs in ways a national average hides. The quantity takeoff stays the same; the pricing layer reflects where the work is built.
Yes. Along with Wilsonville we work in Woodburn, Forest Grove, Newberg and Happy Valley, and across the wider Oregon market. Soil conditions, jurisdiction and plan-review requirements differ between these cities, so we check the local requirements rather than assuming a Portland-metro default applies.
Waste is applied per material, not as one blanket percentage. Continuous footings typically run 5 to 10 percent; sheathing and drywall panels carry panel-cut waste that depends on wall layout; lumber waste depends on whether you are buying precut or random lengths. Every waste factor is shown as its own line so you can see and change it.
We still produce the takeoff on what is shown and return a written list of the missing information, with the divisions it affects. That list is usually the most useful part of the deliverable, because it tells you which questions to send back to the architect before you price the job. We can also re-run the affected divisions once revised sheets arrive.
Yes, and we recommend it. Splitting the house from the sitework is how footing excavation, structural fill, utility trenching and flatwork end up double-counted or missed entirely. We take off the site package and the building under one CSI-organized workbook, with a clear line between what is inside the foundation wall and what is outside it.
Send your plans, specifications and geotech report, and we will return a CSI-organized takeoff with marked-up drawings, typically in 24 to 48 hours.