ADU & DADU Construction in Kirkland, WA
Professional adu & dadu construction services for homeowners in Kirkland and throughout King County. Licensed General Contractor serving Seattle & the Puget Sound.
ADU & DADU Construction Services in Kirkland
Kirkland is a charming waterfront city on Lake Washington, known for its vibrant downtown and strong community identity. The mix of mid-century homes, lakefront properties, and newer developments creates diverse opportunities for Passive House construction, sustainable remodeling, and ADU builds.
Love Construction provides premium adu & dadu construction services throughout Kirkland and King County. Our boutique design-build approach ensures every project receives personalized attention and expert craftsmanship.
What We Offer in Kirkland
- Detached ADUs (DADUs) and backyard cottages up to 1,000 sq ft
- Attached ADUs including basement conversions and garage conversions
- Passive House performance with ultra-low energy costs
- Full kitchens, bathrooms, and living spaces designed for independent living
- Aging-in-place design with accessible features and single-floor layouts
- Rental-ready finishes with separate entrances and utilities
Zip Codes We Serve in Kirkland
98033, 98034
Why Choose Love Construction for ADU & DADU Construction in Kirkland?
- Generate rental income of $1,500-$2,500+/month in the Seattle market
- House aging parents or adult children close by with privacy and independence
- Near-zero energy costs with Passive House construction
- Increase property value by $150,000-$300,000+ in Seattle
- Take advantage of Seattle’s progressive ADU zoning allowances
- 5-year warranty on labor with Built Green certified construction
- Licensed WA Contractor (LOVECC*802N4 · Love Construction LLC)
ADU & DADU Construction FAQ for Kirkland Homeowners
What is a DADU vs. an ADU?
An ADU (Accessory Dwelling Unit) is a smaller, self-contained living unit on a property with a primary home. A DADU (Detached Accessory Dwelling Unit) is a freestanding structure—a backyard cottage. Seattle allows both types on most single-family lots.
How much does an ADU cost to build in Seattle?
ADU costs in Seattle vary by type. Attached ADUs often range from $85,000-$280,000 depending on the existing basement, garage, or addition scope. New DADUs commonly range from $175,000-$550,000 depending on size, site access, utility work, finishes, and whether Passive House performance is included.
How long does ADU construction take in Seattle or King County?
Attached ADUs commonly take 8-12 months from contract to certificate of occupancy. New DADUs often take 12-18 months because they require separate foundation, utility, structural, permit, and inspection work. City review time varies by Seattle, SeaTac, Bellevue, Kirkland, Renton, and other King County jurisdictions.
What are Seattle’s ADU rules?
Seattle allows both an attached ADU and a detached ADU (DADU) on most single-family lots—meaning up to three dwelling units on one property. DADUs can be up to 1,000 sq ft. We handle all zoning research and permitting.
Can a Passive House ADU really have near-zero energy costs?
Yes. A well-built Passive House ADU in Seattle’s mild climate can have total heating and cooling costs under $20/month. Many of our ADU clients add a small solar array to achieve true Net Zero.
Do you serve all of Kirkland?
Yes! We provide adu & dadu construction services throughout Kirkland and all of King County. We serve zip codes 98033, 98034 and surrounding areas.
ADU & DADU Construction in Nearby Areas
Get a Free ADU & DADU Construction Quote in Kirkland
Contact Love Construction today. We serve Kirkland and all of King County.