Design around everyday life
Think through privacy, natural light, storage, kitchen and bathroom layouts, and the path between the two homes. A smaller footprint still deserves a complete home.
DADUs built around your life.
Create a detached backyard home with space for family, guests or a new chapter. TimberworX brings design, planning and construction into one relationship.
Melissa Cook
★★★★★
We absolutely love our home. The team were so great. We did have some issues. But what sets Justin apart is that he cared.
Edwin Robbins
★★★★★
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.
Devon Hjelm
★★★★★
His design team is great and we were able to arrive at a look that matched our vision. Communicative and organized. Would definitely recommend.
Elaine and John Karstens
★★★★★
We had a master bath makeover. TimberworX was able to craft a design that met both our desires and our budget.
Julian Duffy
★★★★★
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.
Woman-ownedDesign & buildLicensed · Bonded · Insured up to $2MWA license TIMBECG790M7
DADUs by TimberworX
Plan the whole investment
Look beyond the building itself. Site work, utility connections, design, engineering, permits and finish selections all belong in the early budget conversation.
One team through construction
TimberworX can coordinate design, preconstruction, permits and construction management, with schedules, messaging and invoicing organized through JobTread.
Hear from our customers
Melissa Cook
★★★★★
“We absolutely love our home. The team were so great. We did have some issues. But what sets Justin apart is that he cared.”
Edwin Robbins
★★★★★
“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.”
Devon Hjelm
★★★★★
“His design team is great and we were able to arrive at a look that matched our vision. Communicative and organized. Would definitely recommend.”
Elaine and John Karstens
★★★★★
“We had a master bath makeover. TimberworX was able to craft a design that met both our desires and our budget.”
Julian Duffy
★★★★★
“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.”
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.
How long will it take?
Design, local review, site work and construction all affect timing. Establish the schedule for the actual property and scope before treating any timeline as a commitment.