DADUs and homes built around your life.
Build a DADU or custom home, plan a home addition or transform your whole house. TimberworX brings design and construction together across the Seattle Eastside.
Room for family
A home nearby. Space of their own.
Designed for you
Thoughtful layouts, inside and out.
One connected team
Design, planning and construction.
A clearer process
Know what comes next.
We absolutely love our home. The team were so great.
Justin and Danielle were very responsive and did a great job keeping me informed throughout the process: from timeline, to selecting finishes and ongoing progress.
His design team is great and we were able to arrive at a look that matched our vision. Communicative and organized. Would definitely recommend.
They delivered everything we wanted and more, kept on schedule and budget, and almost 3 years on from the work we love our new spaces, and Justin is still happy to take a call here and there if we're in need of advice.
Make room for what matters.
Explore DADUs, whole-house renovations, home additions and custom homes with one team for design, planning and construction.
DADUs
Create a detached backyard home with space for family, guests or a new chapter. TimberworX brings design, planning and construction into one relationship.
Whole-house renovations
Bring rooms, finishes and the flow of your home together through one coordinated renovation.
Home additions
Add the rooms you need while keeping the character and everyday flow of the home you love.
Custom homes
A custom home shaped around your property and the way you want to live, with planning and craftsmanship connected from the start.
Good homes start with good people.
Danielle and Justin built TimberworX to bring design clarity, careful construction and steady communication into one relationship.
A woman-owned design-build firm based in Duvall, TimberworX works with homeowners across the Snoqualmie Valley and greater Seattle Eastside.
Meet TimberworXThoughtful spaces. Everyday living.
Explore TimberworX’s residential work, with thoughtful layouts, connected living spaces and careful construction.
Hear from our customers
A few things to know
What is a DADU?
A detached accessory dwelling unit is a self-contained home on the same property as a principal dwelling, in a separate building. People also call them backyard cottages.
Can I build one on my property?
That starts with the specific parcel and its jurisdiction. Zoning, site access, utilities, setbacks and other property conditions need review. Washington’s ADU planning overview is a starting point; the permitting authority determines the requirements for your project.
How much does a DADU cost?
There is no useful universal price for every property. Design, site work, utilities, engineering, permits and finishes all shape the budget. TimberworX offers ballpark estimates for qualified projects; detailed budgeting is a paid preconstruction service.
Can you help with design and permits?
Yes. TimberworX provides design-build support, preconstruction planning, permitting and construction management. The documents and review path depend on location and scope.
Local DADU planning guides
Duvall DADU Permits: What You Need to Know
Duvall DADU permits explained: where to apply, the recorded ADU notice, zoning checks and the documents to prepare for a backyard cottage.
Woodinville DADU Permits: Where to Apply
Find the correct Woodinville DADU permit office, application documents and utility approval path for your property.
Redmond DADU Permits: What You Need to Know
Redmond DADU permits explained: current zoning, building and utility applications, sprinkler coordination and final approval.