Serving Clackamas County, OR
Home Additions in Clackamas County
Gencon's home addition contractors expand Clackamas County homes with room additions, garage conversions, sunrooms, and second-story builds, seamlessly matched to your existing home.
Free estimate: 503-825-0123When you love your neighborhood but need more space, an addition beats moving. Gencon builds room additions, second stories, sunrooms, and garage conversions across Clackamas County, seamlessly matched to your existing home so they never look bolted on.
Types of additions we build
- Room additions and bump-outs: bedrooms, family rooms, expanded kitchens
- Second-story additions when you're out of yard
- Sunrooms and three-season rooms built for the PNW
- Garage conversions into living space
- In-law and multigenerational suites
Related: Garage conversions · Sunrooms · Second-story additions · In-law suites
Matching your existing home
The hard part of an addition isn't building the box. It's making it disappear into the house you already have. We match rooflines, siding, and window styles, and tie the new foundation and framing into the existing structure so the finished home reads as one cohesive whole, not an old house with a new lump attached.
Permits, setbacks, and structure
Any addition changes your home's footprint, so it requires permits and usually structural engineering. Setbacks dictate how close to your property lines you can build, and on the hillside lots common in West Linn and Happy Valley, siting and retaining take extra planning. We handle the permitting and land-use review and design the addition to fit what your lot actually allows.
What additions cost
Additions are typically priced per square foot, and where you land depends on whether you're building out, up, or converting existing space, a garage conversion reuses structure and costs less than a ground-up second story.
Frequently asked questions
- Is an addition cheaper than moving?
- Often, yes: especially when you factor in the cost of selling, buying, and moving, plus leaving a neighborhood and schools you like. An addition lets you keep the location and get the space.
- Should I build out or up?
- Build out when you have the yard and setbacks allow it. It's simpler and usually cheaper. Build up when your lot is tight or you want to preserve outdoor space. We assess your lot and structure and recommend the better path.
- How long does an addition take?
- A single-room addition often runs 2–4 months of construction; a second-story addition takes longer because of structural work and weather protection. Design and permitting add time up front.
Our home additions services
Garage Conversions
Turn an underused garage into a bedroom, office, gym, or ADU. Gencon handles garage conversions across Clackamas County: insulation, egress, and permits included.
Sunrooms
Gencon adds sunrooms and three-season rooms built for the Pacific Northwest, bright, insulated space you can use year-round across Clackamas County.
Second-Story Additions
Out of yard but need more room? Gencon builds second-story additions across Clackamas County, engineering, structural work, and permitting handled so you can grow up, not out.
In-Law Suites
Gencon builds in-law and multigenerational suites across Clackamas County: private bedroom, bath, and living space attached to your home, designed for comfort and independence.
Available across Clackamas County
We bring this service to homeowners throughout the county, including:
Planning a home additions project?
Book a free, no-pressure consultation and estimate with our family-owned team.