Detached ADU · Two Rivers, Eagle, ID
A 396 sq ft Sandpiper studio with an attached garage bay on a large Two Rivers lot in Eagle — sited and styled to clear both City of Eagle design review and the subdivision HOA, used as a guest suite over a deep garage for the homeowner's cars and gear.
Sited a detached Sandpiper with an attached single-car garage on a large Two Rivers lot
Carried the build through City of Eagle design review and the subdivision HOA architectural committee
Matched stucco body, stone accent, and roof pitch to the main house so the ADU reads as part of the property
Studio living space stacked alongside a deep garage bay for vehicles, bikes, and seasonal storage
Full kitchen + 3/4 bath finished to a true guest-suite standard so visitors never touch the main house
Owner-occupancy retained on the primary dwelling, per Eagle's ADU rules
The challenge
Eagle is the part of the Treasure Valley where the design layer is the real work. Beyond the City of Eagle design review board — which scrutinizes massing, materials, and how an accessory structure relates to the primary home — most Two Rivers lots also sit under an HOA with its own architectural committee and material palette. The homeowner wanted a guest suite over a usable garage, not a plain box in the side yard, and anything that clashed with the main house or the neighborhood's stucco-and-stone vocabulary would have stalled in review. Eagle also still requires owner-occupancy on the property, so this had to be an addition to a home the owners live in, not a standalone rental play.
Our approach
The Sandpiper's 396 sq ft studio footprint pairs cleanly with an attached garage bay, which is exactly what a large Two Rivers lot can absorb without crowding the rear yard or triggering a variance. Starting from a pre-approved plan meant the structure was already vetted; the work was the skin. We carried the same stucco body color, stone base accent, and roof pitch as the main house into the design-review and HOA submittals so both committees saw a coherent property rather than a bolt-on. The garage was oriented to share a driveway approach with the existing home, and the studio was finished to a real guest-suite spec — full kitchen, 3/4 tile bath, quartz — so out-of-town family stays self-contained.
The outcome
Both the City of Eagle and the HOA architectural committee signed off without a redesign, and the build ran about seven months including that review window. The owners use the studio as a guest suite for visiting family and the bay for a third vehicle and seasonal gear — a combination a large Eagle lot is built for. Because the unit is plumbed and finished as a true dwelling, it stays flexible for the future, while owner-occupancy on the main house keeps it square with Eagle's ADU rules today.
"We assumed the HOA and the city review would drag for months. Matching the stucco and roofline to our house up front made both approvals straightforward, and now family has their own suite with a garage instead of taking over our guest room."
Wes & Carolyn B.
Two Rivers, Eagle
City
Zoning, plans, and local fit for Eagle ADU builds.
Cost
Real 2026 pricing by plan and finish for this market.
Plan
A 396 sq ft studio paired with a single-car garage — pre-approved, dual-purpose, builds your storage and your rental in one footprint.
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