Waterloo ADU Builder

Thinking about an ADU in Waterloo? 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. Waterloo sits directly on the South Santiam River, so flood-zone status is the first question we ask before designing any structure — and we know how to read the FEMA panels for this stretch.

Building an ADU in Waterloo

Waterloo sits 50 mi northeast of Eugene via I-5 & US-20. Follows a river corridor, so floodplain mapping and riparian setbacks are real factors we plan around from day one. Building permits here go through City of Waterloo — 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, Waterloo is known for Waterloo County Park on the South Santiam River, disc golf and river camping, and we tailor every build to fit the lot, the neighborhood, and how you actually live.

ADU Builder in Waterloo: 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 Waterloo 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 Waterloo and make the whole path simple.

Waterloo ADU questions