Washington Division · Company Headquarters

General Contractor in Federal Way, WA

Our headquarters for the entire business. The office at 36058 21st Lane South puts our crew minutes from any job in South King County — from Twin Lakes remodels to new builds off Pacific Highway.

What we build in Federal Way

  • New Construction

    Ground-up homes on infill and replacement lots across South King County, with the survey, structural engineering, Washington State Energy Code compliance and city submittal all produced in our Federal Way shop.

  • Additions & Renovations

    Second-story additions and bump-outs are a natural fit for the 1960s–1980s split-levels, ramblers and tri-levels that make up most of Federal Way's housing stock.

  • Kitchen & Bathroom Remodels

    The most-requested project in Twin Lakes and across the city — our own crew runs the plumbing rough-in, electrical, tile and cabinetry, with a complimentary 3D model before demolition.

  • ADUs & Garages

    Detached ADUs are now allowed on most Federal Way lots under Washington's updated middle-housing rules; we design, permit and build them as one package.

  • Roofing, Siding, Windows

    Forty inches of rain a year means rain-screen siding, properly flashed windows and roofing installed as one watertight system.

  • HVAC, Plumbing, Electrical

    Heat pumps and tight, well-insulated envelopes are required on new construction under the Washington State Energy Code, and we self-perform the mechanical work rather than brokering it out.

  • Pavers & Concrete

    Driveways, walkways and patios poured for King County's 12-inch frost depth and Puget Sound rain, with base prep and drainage that keep slabs from heaving.

  • Adult Family Home Specifications & Modifications

    Accessible bathrooms, widened doorways, ramps and fire-safety upgrades built to Washington DSHS Adult Family Home licensing requirements.

Permits and codes in Federal Way

Federal Way building permits run through the City's Community Development Department. Addresses in the unincorporated pockets around Lakeland and Star Lake fall under King County instead, and the two jurisdictions have different submittal checklists, fee schedules and inspection scheduling. Because our headquarters is here, we submit, track and pick up permits in person and keep the inspector's schedule and ours on the same calendar.

The codes in force are the Washington State Building Code and the Washington State Energy Code, which drive the insulation, air-sealing and heat-pump requirements on new construction and on larger additions. Seismic hold-downs on every framed wall, 12-inch frost-depth footings and flashing and drainage details sized for 40 inches of annual rain are the structural and envelope items an inspector will look for on a Federal Way job. Our in-house engineering and permitting team produces the plans and stamps the structural work, so nothing stalls between a designer and a builder.

Building in Federal Way: what to know

Federal Way permits run through the City's Community Development Department, with King County handling anything outside city limits in unincorporated pockets around Lakeland and Star Lake. Because our headquarters sits here, our crew is on site in minutes, and we submit, track, and pick up permits in person. Most of the housing stock dates from the 1960s through the 1980s — split-levels, ramblers, and tri-levels that make excellent candidates for kitchen and bath remodels, second-story additions, and detached ADUs now allowed under Washington's updated middle-housing rules.

The Puget Sound climate decides how we build: 40 inches of rain a year means rain-screen siding details, properly flashed windows, and drainage that moves water away from the foundation. Expect standard King County frost depth of 12 inches, seismic hold-downs on every framed wall, and Washington State Energy Code insulation and heat-pump requirements on new construction. We handle all of it in-house, from the excavation to the final inspection.

Neighborhoods and nearby cities we serve

Our headquarters at 36058 21st Lane South puts the crew minutes from any job in South King County — Twin Lakes, the Pacific Highway corridor, Lakeland and Star Lake, and the neighboring cities of Kent, Auburn, Des Moines, Burien, Renton and Tukwila. We also run jobs from here to Seattle, the Bellevue Eastside and Snohomish County, and across the water to Port Orchard and the Kitsap Peninsula.

Federal Way remodeling and building FAQ

Any project that changes structure, adds square footage, or moves plumbing, gas or electrical — additions, second stories, ADUs, kitchens and most bathrooms — needs a building permit from the City's Community Development Department (or King County in the unincorporated pockets). Cosmetic work like flooring, paint and cabinet swaps generally does not. We confirm which category your project falls into on the free advice visit.

Timelines depend on the scope and the department's current workload: a simple remodel permit is typically faster than a new-construction or ADU submittal, which can take several weeks to a few months. We prepare complete plan sets so the review doesn't bounce back for corrections, and because our office is here we handle the submittal, tracking and pickup in person.

Yes. Detached ADUs are now allowed on most lots under Washington's updated middle-housing rules, and the city's split-levels and ramblers are strong candidates for second-story additions. Setbacks, lot coverage and parking still apply, so we check the zoning on your specific parcel first — see our ADU rules by city guide for the details.

Federal Way is our home market and the Puget Sound baseline that every other office is priced against — Seattle city and the Eastside run above it, Spokane, Idaho, Montana and Arizona below it. Run the estimate calculator with your ZIP for a range in about 90 seconds, or browse the cost guides for typical project costs.

Yes — the advice visit is free, on site and done by the builder who prices the job. You get a scoped estimate and a complimentary 3D design model, with no obligation. Because this is our headquarters, we can usually schedule a Federal Way visit within days.
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What clients say

  • "Quick response within the week and a quote we negotiated to a comfortable price. Work started three days later and both projects were done in a single day. The attention to detail on the tile was excellent, and they…" Read more

    Anton
    Tile & Outdoor Stair Repair · Federal Way · 2024
    via Google
  • "Sebastian and his team did an exceptional job restoring my garage — both its structural integrity and the finish — after a car plowed into it. They prioritized the structural restoration within one day of visiting the…" Read more

    Fedon M.
    Garage Restoration · SeaTac · May 2024
    via Yelp
  • "I had a great experience with ID Builder Construction. I discovered a load-bearing beam in the house was compromised due to water damage, which would have prevented me from renting it. Sebastian came in at a reasonable…" Read more

    Nikhil A.
    Structural Repair · San Jose · Apr 2024
    via Yelp

Book your free professional advice visit

Free estimate. Free 3D design model. Free on-site advice from the builder who prices the job. No obligation.