Mapleton Home Addition Builder
Home Additions — built by Eugene’s garage & ADU master craftsman, serving Mapleton since 1969.
Thinking about a home addition in Mapleton? A seamless addition adds the room you need without the cost and upheaval of moving — and Red Umbrella has been building garages, ADUs, and additions across Lane County since 1969. Mapleton is surrounded by commercial timberland and the lots in the community cluster along the Siuslaw River bottomland; high annual rainfall (65+ inches) means every garage or shop build here should prioritize roof pitch, overhangs, and moisture-barrier details that builders closer to Eugene sometimes underspec.
Building a home addition in Mapleton
Mapleton sits 38 mi west of Eugene on Highway 126 in the Coast Range. Follows a river corridor, so floodplain mapping and riparian setbacks are real factors we plan around from day one. Building permits here go through Lane County — a process we know well — and for a home addition, that shapes how the new space ties into existing rooflines, the foundation, and the permit path.
Locally, Mapleton is known for the Siuslaw River and Highway 36 corridor through dense Coast Range timber, and we tailor every build to fit the lot, the neighborhood, and how you actually live.
Home Additions in Mapleton: what we build
We build room additions, primary suites, second stories, and bump-outs that match your home’s lines like they were always there.
- Room & multi-room additions
- Primary suites with spa baths
- Second stories, engineered & permitted
- Sunrooms, bump-outs & matched rooflines
Why Mapleton homeowners choose Red Umbrella
- Garages and ADUs under one roof — the rare shop that masters both, so a garage-with-a-suite is one project, one crew.
- Master Electrician in-house — owner Bari Swartz wires it himself, to code, no waiting on a sub.
- Building since 1969 — you work directly with Bari, not a sales rep or a rotating cast of subs.
- Permits handled & up to 120% financing — we know Lane County and make the whole path simple.
Mapleton home addition questions
How long does a home addition take to build in Mapleton?
Most home additions in Mapleton take 3–6 months from permit submission to completion; permit review alone can take 6–12 weeks. Smaller additions — a bedroom or a covered porch — may move faster; complex multi-room additions with plumbing take longer. Red Umbrella provides a project schedule at the start of each job so you know what to expect at every phase.
Does Red Umbrella handle all the inspections during construction?
Yes — Red Umbrella schedules and manages every required municipal inspection, including foundation, framing, rough electrical, rough plumbing, insulation, and final inspection. The homeowner does not need to coordinate with City or county inspectors; Red Umbrella handles all communication and corrects any inspection comments before re-inspecting. You receive a copy of all final inspection approvals.
How do ADU rental returns compare to the cost of construction in Mapleton?
Mapleton arean ADUs commonly rent for $1,200–$2,000 per month depending on size, location, and finishes, which can generate $14,000–$24,000 per year in gross rental income. At those rates, a $60,000 garage-conversion ADU can recoup its full cost within 3–5 years in rental income alone. Red Umbrella does not guarantee rental rates, but can connect you with local property managers who know the Mapleton market.
We also build these in Mapleton.

ADU Builder
A backyard ADU adds rental income, room for family, and lasting property value.
Learn more →
Garage Conversion
A garage conversion is the fastest, most affordable way to add finished living space.
Learn more →
Custom Garage
A custom garage means covered parking, a real workshop, RV storage, or an apartment above.
Learn more →Home additions near Mapleton
We build throughout Lane County — here are nearby towns we also serve:
Trusted across the valley.
"Bari built us a fine, 600 sq ft cottage (ADU) in our back yard. Helpful from start to finish through the permit process."
"Our garage was crushed by a tree in the ice storm. Red Umbrella, garage specialists, were perfect for the job."
"Bari at Red Umbrella is a solid contractor! We hired him to remodel our garage in College Hill, and it became a special place to live and enjoy."
Planning a home addition in Mapleton?
Bari will look at your lot and give you an honest number — permits handled, up to 120% financing, usually a reply within one business day.
Get My Free Estimate → Call (541) 515-3843