Washington Construction Pros

Washington Construction Pros

Construction & Remodeling in Seattle, WA

Seattle work can range from basement conversions, additions, ADUs and kitchen and bath remodels to office and retail tenant improvements. Steep slopes, landslide- or liquefaction-prone ground and eight historic districts can add review steps, so site conditions are checked early.

Newly completed Northwest contemporary home with stained cedar siding, wide eaves and a daylight basement on a sloped lot among Douglas firs.
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Remodeled kitchen in a 1920s Spokane brick Craftsman with navy lower cabinets, white oak shelves and a window onto ponderosa pines in bright sun.
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Finished bathroom with vertical-grain fir vanity, green-grey zellige-style tile shower and a window looking into wet cedar and fern greenery.
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Homes & buildings

What shapes a project in Seattle

Local conditions worth knowing before scope and budget are set.

  1. Eight historic districts

    Seattle has eight historic districts, including Ballard Avenue, Columbia City, Harvard-Belmont, Pioneer Square and the International Special Review District. A Certificate of Approval must be issued before certain changes to designated landmarks or to properties within these districts.

  2. Environmentally critical areas

    Seattle regulates landslide-prone areas, steep slope erosion areas, liquefaction-prone soils and peat-settlement-prone areas as environmentally critical areas. The city offers an advisory map to check a property, and a topographic survey or geotechnical report may be needed to confirm conditions.

  3. Seattle fault

    The Washington Geological Survey notes that the Seattle fault lies beneath West Seattle and last ruptured about 1,100 years ago. Foundation and framing work on older houses is a practical time to review seismic anchoring.

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Permits & service area

Before a project starts in Seattle

Local permit office

Seattle Department of Construction and Inspections (SDCI)

Which permits a project needs depends on its scope. We identify them during planning; the official site has current requirements, forms and fees.

Visit the permit office site (official site, opens in a new tab)

Service area

Seattle, King County

Service in Seattle is still being confirmed. Send your project address, and availability is confirmed before anything is scheduled.

Nearby Washington cities

All Washington service areas

Planning a project in Seattle?

Tell us what you have in mind and where the property is. We'll follow up to talk through scope, permits and next steps.

CallRequest an Estimate