Bellevue and the wider Eastside have become one of the most active ADU markets in the Puget Sound region. High land values, a tight rental market, and Washington's HB 1337 reforms have made accessory dwelling units an increasingly smart move for Eastside homeowners looking to add rental income, house family members, or build long-term equity.
But building an ADU in a high-cost market like Bellevue means the stakes are higher. Lot prep, permitting, and finishes all run more expensive on the Eastside than in Tacoma or South King County, so choosing an experienced, well-reviewed builder matters more than ever. We've reviewed the top-rated ADU and DADU builders currently serving Bellevue, Kirkland, and Redmond to help you narrow the field.
What Makes the Eastside ADU Market Different
Before we get to specific contractors, it's worth understanding what sets Bellevue and the Eastside apart from Seattle proper:
- Higher construction costs: Eastside labor and material costs tend to run at the top of the regional range. A mid-size detached ADU that might cost $250,000 in Seattle can easily land in the $300,000-$400,000 range in Bellevue depending on site conditions and finish level. Budget accordingly and read our Washington ADU cost breakdown before you start.
- Strong rental returns: The trade-off for higher costs is strong rental demand. Proximity to major employers in Bellevue and Redmond supports premium rents, which shortens the payback period on a well-built unit.
- Varied lots: Eastside lots range from flat suburban parcels to steep, wooded, or view-constrained sites. Builders with experience navigating challenging grades and tight access are worth their fee here.
- No owner-occupancy or parking mandates: Thanks to HB 1337, you no longer have to live on the property to build or rent an ADU, and cities can't impose off-street parking minimums — both meaningful in dense Eastside neighborhoods.
Top ADU Builders Serving Bellevue & the Eastside for 2026
1. NW Finishing
NW Finishing is a Bellevue-based builder with one of the broadest Eastside service areas on our list, covering Bellevue, Kirkland, Redmond, Woodinville, Bothell, and beyond. They publish a working price range of roughly $150,000 to $400,000+, which makes them a flexible option for homeowners weighing everything from a modest attached unit to a fully custom detached cottage.
- Specialty: Full-scope ADU construction across a wide Eastside footprint
- Service area: Bellevue, Kirkland, Redmond, Seattle, Woodinville, Bothell, Renton, Kent
- Price range: $150K-$400K+
2. Brutsky Builds
Brutsky Builds is a Bellevue contractor that serves the core Eastside plus pockets of the Seattle side, including Medina and Carnation. With a perfect client rating, they're a strong pick for homeowners who want a builder comfortable working across a mix of luxury and standard neighborhoods.
- Specialty: Custom residential and ADU builds
- Service area: Bellevue, Kirkland, Redmond, Seattle, Sammamish, Carnation, Medina
3. BLC Remodeling
BLC Remodeling covers a dense cluster of Eastside and South-of-Bellevue communities — Issaquah, Mercer Island, Newcastle, Renton, and Sammamish among them. For homeowners in those areas who want a builder that already knows the local permitting offices, BLC is a natural shortlist candidate.
- Specialty: ADU construction and remodeling across the Eastside
- Service area: Bellevue, Redmond, Kirkland, Issaquah, Mercer Island, Newcastle, Renton, Sammamish
4. New Day Construction (Kirkland)
New Day Construction is a Kirkland-based, top-rated builder serving Kirkland, Redmond, Bellevue, and the greater Seattle area. Their price range spans roughly $150,000 to $400,000+, making them another versatile option for Eastside projects of varying scope.
- Specialty: ADU and residential construction
- Service area: Kirkland, Redmond, Bellevue, Greater Seattle
- Price range: $150K-$400K+
5. Emerald City Construction (Redmond)
Emerald City Construction brings decades of residential experience and one of the widest Eastside service maps on the directory, reaching Redmond, Bellevue, Kirkland, Mercer Island, Sammamish, and Issaquah. They're particularly well-suited to larger or more complex builds and challenging lot conditions.
- Specialty: Full-service construction, complex and challenging sites
- Service area: Seattle, Bellevue, Kirkland, Redmond, Mercer Island, Renton, Sammamish, Issaquah
How to Choose the Right Eastside Builder
There's no single best ADU builder for every Bellevue-area project. The right match depends on your budget, your lot, and how hands-on you want to be. A few things to keep in mind on the Eastside specifically:
- Get at least three quotes. Costs vary widely on the Eastside, and comparing detailed bids is the only way to know whether a number is fair. Our questions to ask an ADU builder guide covers exactly what to probe.
- Verify licensing and insurance. Confirm a valid Washington State contractor's license through the Department of Labor & Industries and make sure the builder carries general liability and workers' compensation coverage.
- Ask about local permitting. Bellevue, Kirkland, and Redmond each run their own permitting processes. A builder who has recently completed ADUs in your specific city will move faster and hit fewer surprises.
- Budget beyond construction. Permit fees, design, utility connections, and landscaping all add up — see our guide to budgeting for an ADU so nothing catches you off guard.
Ready to compare builders near you? Browse every Bellevue-area builder on our city page, explore the full Puget Sound directory, or request free quotes from multiple Eastside contractors at once.