Custom DADU & ADU Builders in Seattle & the Puget Sound Area

Create additional living space, rental income, or flexible housing solutions with a professionally designed and built ADU or DADU.

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Transparent pricing within days

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Owner-led projects from start to finish

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Trusted by Seattle & Eastside homeowners for nearly 20 years

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Need More Space or Additional Income From Your Property?

Many Seattle homeowners are looking for ways to make better use of their property.

  • You need more space for family or guests.
  • You want to generate rental income.
  • Your home lacks flexibility for changing needs.
  • You are unsure how ADU or DADU regulations work in Seattle.
  • The process feels complex and overwhelming.

Building an ADU or DADU can be a smart investment with the right planning and guidance.

A Smarter Way to Expand Your Property

Woodmark Homes designs and builds custom ADUs and DADUs throughout Seattle, Bellevue, Kirkland, Redmond, and the Puget Sound area.

We guide homeowners through every step, from understanding zoning and permitting to designing and constructing a fully functional living space.

Whether you are building for rental income, multi-generational living, or private workspace, we help you create a solution that fits your property and long-term goals.

We Bring:

  • Early budget clarity
  • Collaborative design partnerships
  • Transparent scheduling
  • Owner involvement throughout the project
  • Guidance through Seattle zoning and permitting requirements
Get A Quote
A sunny modern patio with string lights, white outdoor chairs, a fire pit, and potted plants between two white houses. One house features wood siding and large windows.

What Is Included in a DADU/ADU Project?

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Detached Accessory Dwelling Units (DADUs)

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Attached ADUs or garage conversions

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Full design-build coordination

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Site planning and feasibility review

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Permitting and code compliance support

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Foundation and structural work

Plumbing, electrical, and HVAC systems

Kitchen and bathroom build-outs

Interior finishes and cabinetry

Exterior integration with existing property

Most Contractors Make You Wait Weeks for Pricing. We Don’t.

  • We respond within 48 hours
  • Site visits usually happen within 5 business days
  • You receive a preliminary budget within days – not months

We believe early transparency builds trust and eliminates wasted time.

This is one of the reasons we maintain a 97% client satisfaction rate and earn the majority of our work through referrals.

Get A Quote

Craftsmanship You Can See

ADU and DADU construction requires careful coordination, from foundation work to final finishes.

Our team ensures every structure is built to code, thoughtfully designed, and seamlessly integrated into your property. From layout efficiency to finish quality, we focus on creating spaces that are both practical and long-lasting.

A modern rooftop patio with a white floor, light gray paneled walls, glass railing, black wall lights, and a white-framed door, surrounded by green trees in the background.
A modern two-story house with a flat roof, large black-framed windows, and a mix of white and wood-paneled exterior. There is a garage on the left and shrubs in front of the property.
Modern bathroom with a wooden vanity, white countertop, built-in shelves, and drawers. There is a large glass-enclosed shower with gray tile walls and floor, and ceiling-mounted lights overhead.
A modern shower with dark gray tiles, a square overhead rain shower, a handheld shower wand, and a built-in shelf; a toilet is visible through an open wooden door.
Modern laundry room with a front-loading washer and dryer, white cabinets, a sink under a window, and light wood flooring. The space is bright with natural light from the window.
Bright, modern kitchen with white cabinets, marble countertops, stainless steel appliances, and large windows letting in natural light; a wooden floor and potted plant add warmth to the airy space.
A bright, modern bathroom with a gray vanity, marble countertop, silver fixtures, a vase of purple flowers, white towels on a shelf, and a glass-enclosed shower with white subway tile.
A bathroom vanity with a marble countertop, modern silver faucet, vase of wildflowers, framed photo, white hand towel on a ring, and a wall-mounted light fixture, all in a bright, clean setting.
A bright, modern kitchen with white cabinets, marble countertops, open shelves, a gas stove, and a farmhouse sink. A bowl of strawberries sits on the counter near a windowed door with a garden view.
Minimalist bathroom with white walls, hexagonal gray floor tiles, a floating white vanity with a rectangular sink, modern faucet, wall mirror, hanging light bulbs, a toilet, and a shower-tub combination in the background.

WHY HOMEOWNERS TRUST WOODMARK HOMES

Clarity. Confidence. Craftsmanship.

Nearly 20 years serving Seattle and the greater Puget Sound

Hundreds of successful renovations and additions completed

Owner-led projects - work directly with Jeff and Mark

Transparent timelines and realistic budgeting

Rough-order budget guidance within days, not months

Trusted architect and design partnerships

Craftsmanship built to last for decades

Spaces designed for real life — family, work, entertaining

★★★★★

"Outstanding to Work With!"

We are an Architecture firm who has worked with Woodmark Homes on several home remodels of various ...
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Board & Vellum
★★★★★

"Outstanding to Work With!"

We are an Architecture firm who has worked with Woodmark Homes on several home remodels of various sizes (from smaller kitchen projects to whole house remodels). Their team is outstanding to work with. They provide a very rare combination of excellent customer service, accurate and clear estimating, and outstanding problem solving. They're unflappable and provide a calm and clear path forward for clients during their remodel. We can't recommend them highly enough.
Board & Vellum
★★★★★

"Would Definitely Hire Woodmark Again!"

We completely gutted an original bathroom in a house built in the 1920's. The bathroom was ...
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Sydney Wood
★★★★★

"Would Definitely Hire Woodmark Again!"

We completely gutted an original bathroom in a house built in the 1920's. The bathroom was remodeled with a new tile floor, drywall ceiling and walls, new plumbing fixtures (including pedestal sink, tub, and toilet), tiled walls around the shower, a new bathroom exhaust fan, and the existing original window was replaced with an energy-efficient double-pane window. In the kitchen, the existing laminate countertop was replaced with a solid surface quartz countertop, a new under-mount sink was plumbed, and a backsplash was added. The existing plaster kitchen ceiling was removed, and a new drywall ceiling was added with recessed lighting and a pendant fixture over the sink. Jeff was easy-going and fun to work with. He gave good design advice when asked, but left most of the decisions up to us. The project started as a bathroom remodel, but Jeff & Mark did a great job, so we added a few small projects in the Kitchen. Everything turned out great, and we would definitely hire Woodmark Homes again.
Sydney Wood
★★★★★

"Prompt. Clean. Beautiful Work!"

I called Jeff after receiving a referral and he showed up the same day to give us ...
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Kirsten R.
★★★★★

"Prompt. Clean. Beautiful Work!"

I called Jeff after receiving a referral and he showed up the same day to give us a bid on several tile projects we had going in an extensive remodel of our home. Our tile contractor, Tim, was prompt, clean, and did beautiful work. They were also very flexible in working with our tight construction schedule, often having to work around other contractors on the project. Additionally, Jeff showed up each day to check the work and make sure things were moving along as they should. I would not hesitate to use Jeff again or to recommend Woodmark Homes to friends, family, or clients.  
Kirsten R.
★★★★★

"On Time, On Budget & Excellent Quality!"

Jeff & Mark did a complete remodel of our house down to the studs. ...
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Jason T.
★★★★★

"On Time, On Budget & Excellent Quality!"

Jeff & Mark did a complete remodel of our house down to the studs. Jeff provided us with a detailed outline of the process and walked us through every step of the multi-month project. Mark was amazing at helping troubleshoot any issues that came up, along with giving advice when we had to make decisions. In the end, the project was on time, on budget, and the quality was excellent. After moving in, a few minor things came up, and Mark and Jeff came out right away and made sure they were fixed.
Jason T.
★★★★★

"Excellent Job - Clear Estimate - On Time"

Woodmark Homes did a basement and kitchen remodel in my home. The estimate ...
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Claudette M. Hunt
★★★★★

"Excellent Job - Clear Estimate - On Time"

Woodmark Homes did a basement and kitchen remodel in my home. The estimate was clear and reasonable, and my questions were promptly answered. The work went smoothly and was done on time. The workers are pros. They did an excellent job with painting, plumbing, and electrical. I intend to hire them again and will not hesitate to recommend Woodmark Homes to friends and family.
Claudette M. Hunt
★★★★☆

"Efficient! Best Bid - Would Hire Them Again"

Woodmark Homes repaired water damage in my bathroom and tiled the tub and ...
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Marilyn
★★★★☆

"Efficient! Best Bid - Would Hire Them Again"

Woodmark Homes repaired water damage in my bathroom and tiled the tub and floors. They did a very good job. Everyone who came worked efficiently, and the work was done in a reasonable amount of time. They had the best bid also. I would hire them again.
Marilyn

Your Dream Home in 3 Steps

Share Your Ideas For Your Home

Request a quote, or contact us, and we’ll talk about how you want to update your home, pricing, and a plan of action.

Start the Design Process

We’ll match you up with a vetted local architect or designer to design your addition or renovation.

See Your Vision Turned Into Reality

We build your dream space so you can enjoy it for years to come.

Roadmap to Working with Us

1

Consultation

2

Pre-Construction & Design

3

Selections & Permitting

4

Construction Begins

5

Project Oversight/Management

6

Project Completion!

Celebrate and enjoy your new space!

Work With Us To Expand Your Home with DADU/ADUs

Get A Quote

Serving Seattle, Bellevue, Kirkland, Redmond, and the Greater Puget Sound Area

For nearly 20 years, Woodmark Homes has completed remodeling and addition projects across the Seattle metro and Eastside communities.

We understand local permitting requirements, neighborhood architectural styles, and construction expectations unique to the Pacific Northwest.

Imagine Unlocking the Full Potential of Your Property

Additional living space.
Rental income opportunities.
Flexible housing for changing family needs.
A long-term investment in your home.

Woodmark Homes helps Seattle and Puget Sound homeowners design and build ADUs and DADUs with clarity and confidence.

Get A Quote

Frequently Asked Questions

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