Family-owned ADU & DADU contractor with 30+ years on the Eastside. We handle everything from permits to construction, so you don't have to.
30+
Years on the Eastside
100%
Family Owned
A–Z
Permits to Keys
$0
Consultation Fee
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We respond within 1 business day.
For over three decades, Tennyson Homes has been the Eastside's go-to family for ADU and DADU construction. We're not a volume builder. Every project gets our full attention, from the first design conversation to the day we hand you the keys.
Whether you're adding a backyard cottage for rental income, creating space for aging parents, or building a DADU to increase your property value. We bring 30+ years of Eastside expertise to every square foot.
Start Your ADU Project
30+
Years Building
on the Eastside
Every project is designed around your property, your goals, and your budget. Here's what we build.
Attached or detached ADUs that add square footage, rental income potential, and lasting property value, all built to local code.
Detached Accessory Dwelling Units designed and built as fully independent living spaces in your backyard.
Charming, functional backyard cottages perfect for extended family, guests, or as a premium rental unit.
Comfortable, private suites that keep family close without sacrificing independence. Designed with privacy and dignity in mind.
We handle the paperwork: feasibility studies, permit applications, city coordination. You focus on the vision.
From site prep and foundation to framing, finishing, and final walkthrough. We run the job so you don't have to.
We've been building on the Eastside for over 30 years. We know the soil, the codes, the permit offices, and the neighborhoods. That local knowledge saves you time, money, and headaches.
Book Your Free ConsultationWe know Bellevue, Mercer Island, and Kirkland's zoning laws, permit processes, and city requirements inside out.
No account managers. No middlemen. You work directly with us from consultation to completion.
We handle the entire project: feasibility, design, permits, construction, and final inspections.
Your investment is fully protected. We meet every Washington State contractor requirement.
No pressure, no cost. We'll assess your property and walk you through the possibilities.
A proven process refined over 30+ years. Straightforward. Transparent. No surprises.
We visit your property, assess feasibility, and walk you through your options, at no cost.
Your ADU is designed around your property, lifestyle, and local zoning requirements.
We prepare and submit all permit applications on your behalf.
Our crew builds your ADU to the highest standard, on time and on budget.
We walk through every detail together. Punch list complete, keys in hand.
We're a local team, not a regional franchise. We've built ADUs across the Eastside and know exactly what each city requires.
Don't see your city? Call us. We likely build there too.
Local
Experts You
Can Trust
Real words from real clients.
Tennyson Homes built a beautiful custom home for us, and we could not be more pleased with the entire process from design through completion. Their project management was excellent, with clear schedules, accurate budgeting, and consistent communication at every phase.
Construction quality was top tier, with strong attention to structural integrity, material selection, and finish detail. Any questions or changes were handled efficiently and professionally. The build stayed on track, met specifications, and exceeded our expectations in both craftsmanship and execution.
We highly recommend Tennyson Homes to anyone seeking a high quality, dependable custom builder.
I cannot believe how lucky we were to find Jim Tennyson as our contractor to build our home. It is coming up on 6 years since the house was built, and I wanted to acknowledge not only how well the house was constructed, but also how easy it was to work with Jim and his crew.
Jim's communication was outstanding during the entire build and was always available for any questions that we had. What I didn't realize at that time was that he would always be there for us regardless of the house being finished. When we had some issues arise over the past 6 years, Jim would be sure that whatever the issue, he would make sure it was addressed and taken care of.
All of this to say, you'll appreciate having made the decision to work with Tennyson Homes for your custom built home.
Get a free, no-pressure consultation with our team. We'll visit your property, walk you through your options, and give you a clear picture of what's possible, at no cost to you.
Call or Text
(206) 914-5970Serving
Bellevue, Kirkland, Mercer Island & the Eastside
We'll respond within 1 business day.
