Home Additions in Seattle, WA
Professional home additions services for homeowners in Seattle and throughout King County. Licensed General Contractor serving Seattle & the Puget Sound.
Home Additions Services in Seattle
Seattle is the Pacific Northwest’s largest city, known for its tech-forward community, progressive sustainability values, and diverse housing stock. The rainy, mild climate makes Passive House construction especially valuable—airtight building envelopes eliminate drafts and moisture problems while slashing heating costs by up to 90%.
Love Construction provides premium home additions services throughout Seattle and King County. Our boutique design-build approach ensures every project receives personalized attention and expert craftsmanship.
What We Offer in Seattle
- Room additions with super-insulated building envelopes
- Second story additions that maximize your lot without sprawling
- Bump-outs and cantilevers for targeted space gains
- Master suite additions with luxury finishes and energy efficiency
- Seamless architectural integration with existing rooflines and materials
- HVAC extension and electrical panel upgrades sized for efficiency
Zip Codes We Serve in Seattle
98101, 98102, 98103, 98104, 98105, 98106, 98107, 98108, 98109, 98112, 98115, 98116, 98117, 98118, 98119, 98121, 98122, 98125, 98126, 98133, 98134, 98136, 98144, 98146, 98154, 98164, 98174, 98177, 98178, 98195, 98199
Why Choose Love Construction for Home Additions in Seattle?
- More living space without the cost and stress of moving
- Significant property value increase with quality construction
- Better energy performance than your existing home in the new space
- Custom design tailored to your specific needs and lifestyle
- Avoid losing your current mortgage rate by staying in place
- Built Green certified construction with low-carbon materials
- Licensed WA Contractor (LOVECC*802N4 · Love Construction LLC)
Home Additions FAQ for Seattle Homeowners
How do you match the addition to my existing home?
We carefully study your home’s architectural style, materials, and proportions. We source matching or complementary roofing, siding, windows, and trim so guests never know where the original ends and the addition begins.
What does a home addition cost in Seattle?
Home additions in Seattle typically range from $250-$500 per square foot. A simple room addition might cost $80,000-$150,000, while a master suite addition runs $150,000-$300,000+. Second story additions start around $250,000.
How long does a home addition take?
A bump-out or small room addition might take 2-3 months. A master suite addition typically takes 4-6 months. Second story additions can take 5-8 months. Seattle permitting can add 6-12 weeks.
Will my addition be more energy-efficient than my existing home?
Absolutely. We build every addition to exceed current energy code, often to near-Passive House standards. The new space will likely be the most comfortable, efficient part of your home.
Do you serve all of Seattle?
Yes! We provide home additions services throughout Seattle and all of King County. We serve zip codes 98101, 98102, 98103, 98104, 98105, 98106, 98107, 98108, 98109, 98112, 98115, 98116, 98117, 98118, 98119, 98121, 98122, 98125, 98126, 98133, 98134, 98136, 98144, 98146, 98154, 98164, 98174, 98177, 98178, 98195, 98199 and surrounding areas.
Home Additions in Nearby Areas
Get a Free Home Additions Quote in Seattle
Contact Love Construction today. We serve Seattle and all of King County.