Construction estimating services in Portland, OR

Wet weather can delay sitework, concrete pours, and exterior finishes. In your estimate, you should include allowances for temporary erosion control, dewatering, and winter protection measures like tarps and heaters. These items are often overlooked but can add 2–5% to the cost of sitework and concrete. We break them out as separate line items so you can see the impact and plan accordingly. For projects in the West Hills or near the Willamette River, where soils stay saturated longer, the allowance may be higher.

Many parts of Portland have expansive clay or loess soils that require over-excavation and engineered fill. You may also encounter basalt rock that needs blasting or hoe-ramming. Your geotech report will specify the depth of over-excavation, which can range from 2 to 6 feet. We take off the additional excavation, backfill, and compaction separately from standard footing and slab work. If you are building near the Columbia Slough, you may also need dewatering and special foundation systems. Always confirm soil conditions with a geotechnical engineer before finalizing your bid.

Yes. Portland is in Seismic Design Category D, which requires hold-downs, anchor bolts, and shear nailing beyond what you see in many other markets. Your structural plans will specify the type and spacing of hold-downs, typically at corners and along shear walls. We count each hold-down, anchor bolt, and block, and add the additional nailing and framing hardware. If you miss these, your framing bid will be low. We include a separate line for seismic hardware in every framing takeoff for Portland projects.

For composition shingle roofs, we use a typical waste factor of 10% to account for cuts, valleys, and ridge caps. For standing seam metal roofs, the waste factor is lower, around 5%, because panels are custom-cut. However, complex roof geometries with multiple valleys and dormers can push waste higher. We also add underlayment, ice-and-water shield at eaves and valleys, and ridge vent by linear foot. These are often missing from generic roofing bids. Our roofing estimating services include a marked-up plan showing each roof plane and the waste factor applied.

For commercial projects, we separate base building MEP from tenant improvement MEP. We take off ductwork by linear foot and fitting count, piping by diameter and material, and electrical by panel schedule and device count. We also include testing, balancing, and commissioning if specified. Portland's energy code may require additional insulation on ducts and pipes, and high-efficiency equipment. We organize the takeoff by CSI division so you can compare bids from mechanical and electrical subcontractors directly. Our MEP estimating services cover both design-bid-build and design-build delivery.

Most estimates are delivered within 24–48 hours. Rush service is available for an additional fee. We provide Excel and PDF formats organized by CSI MasterFormat division, with marked-up plan sets showing what we measured. For large multi-family or commercial projects, we may need 3–5 days depending on the scope. We use Bluebeam Revu, PlanSwift, and RSMeans data with ZIP-code-adjusted pricing for Portland. Send your plans and specs through our get an estimate page to start.

The permit data comes from the U.S. Census Bureau's Building Permits Survey. It counts new privately-owned residential units permitted by the city of Portland in 2025. It does not include commercial permits or renovations. In 2025, Portland issued 1,223 residential units, down 28% from 1,700 in 2024. Of those, 703 were single-family and 520 were multifamily. The total permitted value was $319 million, with an average value per unit of $261,100. This data helps us understand market trends but does not affect your specific takeoff.

Yes, we cover those cities and the surrounding areas. While our focus is on Portland, we regularly provide estimating services for projects in Salem, Eugene, and Gresham. Each city has its own permit requirements and soil conditions, but our takeoff methods and pricing databases are adjusted by ZIP code. If you have a project in one of these areas, we can deliver the same detailed, CSI-formatted estimate. See our pages for Salem construction estimating, Eugene construction estimating, and Gresham construction estimating for more details.

We need a complete set of plans and specifications, including architectural, structural, civil, and MEP drawings. If you have a geotech report, soil report, or survey, include those as well. We also need to know the project type, location, and any specific scope inclusions or exclusions. For renovations, existing conditions drawings help. You can upload files through our get an estimate page. If you only have partial plans, we can still provide a preliminary takeoff with assumptions noted. The more information you provide, the more accurate the estimate.

We use RSMeans data adjusted by ZIP code for Portland's labor and material costs. This accounts for local wage rates, union vs. non-union labor, and material availability. We also track local market conditions and can apply a factor for prevailing wage if required. For public projects, we follow Davis-Bacon or Oregon BOLI wage determinations. Our estimates break out labor and material separately so you can see the basis. We do not mark up subcontractor quotes; we provide a neutral takeoff you can use for bidding or budgeting.