Harrisburg ADU Builder

Thinking about an ADU in Harrisburg? A backyard ADU adds rental income, room for family, and lasting property value — and Red Umbrella has been building garages, ADUs, and additions across Linn County since 1969. Harrisburg is the closest Linn County community to Eugene, so a garage or ADU here gets Willamette Valley farm-lot character with a short haul for our crew and materials.

Building an ADU in Harrisburg

Harrisburg sits 14 mi north of Eugene via I-5. Is surrounded by working farmland where efu zoning and generous setbacks shape what — and where — you can build. Building permits here go through City of Harrisburg — a process we know well — and for an ADU, that shapes how utilities connect and whether a detached cottage or an attached unit fits best.

Locally, Harrisburg is known for Willamette River at River Mile 160, I-5 Exit 209, and we tailor every build to fit the lot, the neighborhood, and how you actually live.

ADU Builder in Harrisburg: what we build

We build detached backyard cottages, attached units, and ADUs above or beside a garage — designed, permitted, and built end to end.

• Detached & attached ADUs, 400–900+ sq ft
• Garage-to-ADU conversions (our specialty)
• Permits, utilities & site work handled
• Up to 120% financing — cash-flows as a rental

Why Harrisburg 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 Harrisburg and make the whole path simple.

Harrisburg ADU questions