Mapleton Home Addition Builder
Home Additions — built by Eugene’s garage & ADU master craftsman, building across Lane County 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. An addition in Mapleton has to keep the weather out, so we match the existing roofline, extend the overhangs and detail every flashing seam where the new space meets the old house.
Building a home addition in Mapleton
Mapleton sits about 38 miles west of Eugene as the crow flies, where Highway 126 meets Highway 36 on the Siuslaw River. Lots here range from Siuslaw river bottomland to steep timbered hillsides, so floodplain mapping, slope and storm drainage are worked out 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, the Sweet Creek Falls trail and the surrounding Siuslaw National Forest, 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.
- Electrical planned from day one — owner Bari Swartz, formerly a Master Electrical Contractor in several states, plans the wiring with the floor plan.
- 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 do you make an addition match an older Mapleton home?
We match the roof pitch, siding, trim and window style, tie the new foundation and framing properly into the old, and plan the electrical and heating with the new rooms. On river-bottom lots we also confirm the new floor height against the floodplain map before framing starts. The addition is permitted and inspected through Lane County.
Does Red Umbrella build in Mapleton?
Yes. Mapleton is about 38 miles west of Eugene in a straight line, where Highway 126 meets Highway 36, inside our service area of Lane County within about 45 miles of Eugene.
Who issues building permits in Mapleton?
There is no city permit office in Mapleton; applications, plan review and inspections all run through Lane County’s Land Management Division in Eugene. Red Umbrella files the paperwork and meets the inspectors on site, so you do not have to make the drive.
We also build these in Mapleton.

ADU Builder
A backyard ADU adds rental income, room for family, and lasting property value.
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Garage Conversion
A garage conversion is the fastest, most affordable way to add finished living space.
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Custom Garage
A custom garage means covered parking, a real workshop, RV storage, or an apartment above.
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Home Remodeling
Whole-home remodels, great rooms, open floor plans and new floors — by the builder who knows every trade.
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Kitchen Remodeling
New layouts, open-plan kitchens, custom cabinets, islands and lighting — structure, wiring and finish planned together.
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Bathroom Remodeling
Tile showers, tub-to-shower conversions, double vanities, primary-bath expansions and accessible walk-in baths.
Learn more →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