Cottage Grove Home Addition Builder

Thinking about a home addition in Cottage Grove? 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. Cottage Grove’s historic district design standards apply to façade work near Main Street, but residential garage and ADU additions on surrounding half-acre lots proceed under standard city permits with no historic overlay — good-sized yards leave room for true detached structures.

Building a home addition in Cottage Grove

Cottage Grove sits 20 mi south of Eugene on I-5. Has historic-character streets where design and materials matter, so a build has to fit the period without faking it. Building permits here go through City of Cottage Grove — 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, Cottage Grove is known for covered bridges of the Coast Fork Willamette and the Historic Main Street district, and we tailor every build to fit the lot, the neighborhood, and how you actually live.

Home Additions in Cottage Grove: 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 Cottage Grove 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 City of Cottage Grove and make the whole path simple.

Cottage Grove home addition questions