DADU Builder in Redmond, WA
Thinking about a detached accessory dwelling unit on your Redmond property? We help Eastside homeowners turn underused backyard space into beautiful, permitted, income-ready living space — design, permitting, and construction handled by one accountable team.
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DADU Rules in Redmond Are Friendlier Than You Think
Redmond rewrote its zoning code under Redmond 2050 (effective 2025), and the current rules are genuinely homeowner-friendly:
- Two ADUs or tiny homes allowed on every residential lot — attached, detached, or both
- Up to 1,000 sq ft — and larger units possible on lots over 10,000 sq ft with city approval
- A DADU can rise to the zone's 38-foot height max (ordinary accessory structures cap at 22 ft)
- A DADU can sit right on the lot line where it abuts an alley or right-of-way
- Zero additional off-street parking required, citywide
- No owner-occupancy requirement — rent out the house, the DADU, or both
Verified July 2026 against Redmond Zoning Code 21.04.1110. Fire sprinklers are required in new detached ADUs — we design and budget for them from day one. We confirm your lot’s specifics during feasibility.
What Homeowners Use a Redmond DADU For
Redmond’s strong housing demand and proximity to major Eastside employers make a backyard DADU one of the smartest improvements you can make to your property:
Rental income
A private, detached unit is highly rentable in Redmond's tight rental market.
Family housing
Aging parents, adult children, or a live-in caregiver — with privacy on both sides.
Long-term value
A permitted, well-built DADU is a lasting asset, not a temporary fix.
Flexible space
A home office, studio, or guest house that adapts as your needs change.
Our Design-Build Process
One accountable team from first sketch to final inspection — no juggling separate architects, permit expeditors, and contractors.
- 1. Consultation & feasibility — your lot, your goals, and what Redmond's code allows
- 2. Design — a DADU tailored to your property, budget, and how you'll use it
- 3. Permitting — we prepare and manage submittals through Redmond's online PRO system
- 4. Construction — one team builds it, with clear milestones and communication
- 5. Move-in ready — final inspections handled; ready to rent or welcome family
Redmond DADU Questions, Answered
How many ADUs does Redmond allow on my lot?
Two. Redmond’s current code allows two ADUs or tiny homes on each residential lot — attached to the house, detached in the backyard, or one of each. We confirm the best configuration for your lot during feasibility.
How big and how tall can a DADU be in Redmond?
Up to 1,000 square feet — and unlike ordinary accessory structures (capped at 22 feet), a structure containing an ADU can rise to the zone’s 38-foot height max. On lots over 10,000 square feet, the city can approve a larger unit if it’s affordable or provides a public benefit.
Do I need extra parking or to live on-site for a Redmond ADU?
No and no. Redmond requires zero additional parking spaces for ADUs anywhere in the city, and there is no owner-occupancy requirement — you’re free to rent out the main house, the ADU, or both.
Are fire sprinklers required in a Redmond DADU?
Yes — Redmond requires sprinklers in new detached ADUs. It’s a real cost line many first-time builders miss, which is why we design and budget for it from the first sketch instead of discovering it at plan review.
How does DADU permitting work in Redmond?
A DADU needs a residential building permit from Redmond Development Services, submitted through the city’s online PRO system. We prepare the drawings, manage the application, and handle review comments so approval stays on track.
Build Your Redmond DADU
Ready to see what’s possible in your backyard? We’ll walk your Redmond property, talk through the options, and give you a clear path forward.