
Home Additions in SeaTac, WA
Professional home additions services for homeowners in SeaTac and throughout King County. Licensed General Contractor serving Seattle & the Puget Sound.
Home Additions Services in SeaTac
SeaTac is home base for Love Construction. Located between Seattle and Tacoma in South King County, SeaTac homeowners benefit from direct access to our team for ADU construction, kitchen remodeling, bathroom renovations, home additions, and seismic retrofitting. Our SeaTac roots mean faster response times, local permit knowledge, and deep familiarity with South King County housing stock.
Love Construction provides premium home additions services throughout SeaTac and King County. Our boutique design-build approach ensures every project receives personalized attention and expert craftsmanship.
What We Offer in SeaTac
- 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 SeaTac
98148, 98158, 98168, 98188

Why Choose Love Construction for Home Additions in SeaTac?
- 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 SeaTac 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 SeaTac?
Yes! We provide home additions services throughout SeaTac and all of King County. We serve zip codes 98148, 98158, 98168, 98188 and surrounding areas.
Home Additions in Nearby Areas
Get a Free Home Additions Quote in SeaTac
Contact Love Construction today. We serve SeaTac and all of King County.