
Home Additions in Renton, WA
Professional home additions services for homeowners in Renton and throughout King County. Licensed General Contractor serving Seattle & the Puget Sound.
Home Additions Services in Renton
Renton is a rapidly growing city in South King County, home to Boeing and a thriving residential community. Love Construction serves Renton homeowners with ADU/DADU construction, kitchen remodeling, home additions, bathroom renovations, and seismic retrofitting. Renton's mix of mid-century ranches and newer construction offers diverse opportunities for sustainable upgrades.
Love Construction provides premium home additions services throughout Renton and King County. Our boutique design-build approach ensures every project receives personalized attention and expert craftsmanship.
What We Offer in Renton
- 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 Renton
98055, 98056, 98057, 98058, 98059

Why Choose Love Construction for Home Additions in Renton?
- 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 Renton 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 Renton?
Yes! We provide home additions services throughout Renton and all of King County. We serve zip codes 98055, 98056, 98057, 98058, 98059 and surrounding areas.
Home Additions in Nearby Areas
Get a Free Home Additions Quote in Renton
Contact Love Construction today. We serve Renton and all of King County.