Banbury
Established golf community south of State Street with strict HOA design review — our plans are pre-tuned for Banbury's architectural committee.
Serving Eagle, Idaho
Eagle's premium ADU builder
Detached ADUs designed to match Eagle's larger lots, foothill character, and HOA design-review standards — from in-law suites along Floating Feather to riverfront guest homes near Eagle Island.
ADUs in Eagle
Why Eagle homeowners are building backyard homes
Eagle is a different kind of ADU market. Lots here are bigger, homes here cost more, and design review is taken seriously — which means the cookie-cutter prefab box that drops onto a Boise infill lot is rarely the right answer in Banbury or Two Rivers. Our Eagle builds are tuned for that reality. We specify exterior materials, rooflines, and trim packages that pass HOA architectural committees on the first submission, and we site units to take advantage of the space most Eagle homeowners actually have to work with.
Most of our Eagle clients are building for one of three reasons: a multigenerational suite for aging parents who want their own front door, a long-term executive rental that throws off $1,800-$2,200 a month, or a guest house for the family that descends every summer when the Boise River and Eagle Island State Park are at their best. The economics work differently than they do in Boise — the rent ceiling is higher, the build standard is higher, and the property values that an ADU touches are higher. Getting it right matters more here.
We've built across Eagle's geography: foothill lots north of Floating Feather where you're staring straight at Bogus Basin, river-adjacent properties south of State Street, and equestrian-zoned acreage where the ADU sits 200 feet from the main house behind the arena. Each of those builds has its own permitting path, its own setback math, and its own design vocabulary. We know which is which before we put a shovel in the ground.
- 37,000
- Eagle residents
- $700k+
- Median home value
- $1,800-$2,200
- Typical 1-bed long-term rent
- 10'+
- Standard side-yard setback
Neighborhoods
Where we build in Eagle
We've worked across most of Eagle — here are the neighborhoods most homeowners are asking us about.
Two Rivers
Riverfront enclave near the confluence — large lots, mature landscaping, and demand for premium guest suites overlooking the Boise River.
Eagle Hills
One of Eagle's original golf neighborhoods off Eagle Road — generous lots and a steady multigenerational ADU market.
Castlebury
Newer master-planned community near Linder and Floating Feather — production-home parcels with room behind the house for a detached unit.
Hidden Hollow
Quieter pocket of larger custom homes where ADUs typically serve as in-law suites or long-term rentals for adult children.
Eagle Foothills
North of Floating Feather toward Beacon Light — view lots, equestrian-friendly zoning, and ADUs that often double as guest houses.
Zoning + Permits
Eagle's ADU rules in plain English
Eagle's ADU rules emphasize compatibility with the primary residence and the surrounding neighborhood. Larger lots open up more siting options than you'd find in Boise, but the design review bar is higher — and HOA covenants in places like Banbury, Two Rivers, and Eagle Hills often go beyond what the city itself requires.
Architectural compatibility required
Eagle generally requires the ADU's roof pitch, siding, and color palette to match the primary home. We design our Eagle builds to read as a deliberate extension of the main house, not a separate prefab object dropped on the lot.
Larger setbacks, more siting room
Typical Eagle setbacks run 10' or more on the side and 15'+ in the rear, but the lots are big enough that we can usually pick the best orientation for sun, views, and privacy from the main house — something Boise infill rarely allows.
HOA design review on top of city review
Banbury, Two Rivers, Eagle Hills, and most newer master-planned communities run their own architectural committees. We submit to the HOA before the city, since their approval often dictates the final exterior package.
Equestrian and agricultural zones differ
Properties zoned RR (Rural Residential) or with agricultural overlays follow a different rulebook than standard R-1/R-2 — including how barns, accessory structures, and ADUs interact on the same parcel.
Owner-occupancy typically required
Eagle generally expects either the main house or the ADU to be owner-occupied, which steers most clients toward long-term rentals or family use rather than short-term vacation rentals.
Why Eagle
What makes Eagle a strong ADU market
Foothill views worth designing around
Eagle Foothills lots stare directly at the Boise Front. We orient living spaces and primary bedroom windows to capture Bogus Basin views, then tuck utility walls toward the main house.
Equestrian-zone experience
We've permitted ADUs on RR-zoned acreage where the unit shares a parcel with an arena, barn, or pasture — different setback rules, different water-and-septic logistics, same attention to detail.
Larger lots, smarter siting
Eagle lots typically have real rear-yard depth. We use it — siting detached units far enough from the main house to feel separate, close enough that utilities don't blow up the budget.
Multigenerational living, done right
Most of our Eagle builds house parents, in-laws, or adult children. We design for that: zero-step entries, wider hallways, primary suites that work for someone aging in place.
Premium long-term rental returns
Eagle's median 1-bedroom rent runs $1,600-$2,000+ — and well-built detached units routinely clear the top of that range. Long-term tenants here tend to be relocating professionals and empty-nesters.
Match-the-house design as standard
Every Eagle plan we build is detailed to mirror the primary residence's siding profile, trim color, and rooflines. Design review is a starting point, not a hurdle we discover late.
Recommended Plans
Best pre-approved plans for Eagle lots
The City of Boise's pre-approved plans work in every Treasure Valley jurisdiction. Here are the picks that fit this city's lots and rental market best.
Type DThe Kestrel
From $245k
695 sq ft · 2 bd · 1 ba
At 695 sq ft and 2 bedrooms, the Kestrel is the right scale for Eagle's larger lots and multigenerational use cases — full second bedroom, real living room, and enough presence to read as a proper guest house.
See the The Kestrel
Type CThe Kingfisher
From $170k
491 sq ft · 1 · 1 ba
The 491 sq ft 1-bedroom hits the sweet spot for Eagle long-term rentals and in-law suites. Bigger than a studio, easier to permit than a 2-bed, and the rent comps support it.
See the The Kingfisher
Type G-1The Sandpiper
From $145k
396 sq ft · Studio · 1 ba
Studio plus an attached garage at 396 sq ft — popular with Eagle Foothills and Floating Feather clients who want covered parking and storage on properties without an existing detached garage.
See the The SandpiperEagle Lot Realities
What ADU homeowners in Eagle actually check
Local specifics — not generic Treasure Valley copy.
What to check first on a Eagle lot
Eagle is the strictest of the Treasure Valley cities on architectural compatibility — even a pre-approved Boise plan may need exterior modifications to match the main house. Pull HOA CC&Rs early: Banbury, Two Rivers, Eagle Springs, and Legacy each have ARC review independent of the city. Foothills lots also trigger Eagle's hillside review on top of city plan check.
Common Eagle lot types
Eagle lots are larger than the Treasure Valley average — 90-120' wide is common in the established subdivisions, with 1/4-acre and larger lots in Eagle Hills and the Foothills. Generous buildable envelopes mean the Kestrel fits almost everywhere. Newer Floating Feather and Linder Road developments stay closer to 70-80' standard suburban widths.
Detached vs garage conversion in Eagle
Detached almost always wins in Eagle. Lots are large enough that the larger pre-approved plans (Kestrel, Kingfisher) fit cleanly, rental and resale value reward the configuration, and HOA architectural review prefers a freestanding accessory dwelling that visibly matches the main house over a garage conversion. The Kestrel is our most common Eagle pick.
Cost considerations in Eagle
Eagle builds typically run 5-10% over the Boise baseline. The premium comes from HOA-driven exterior upgrades — stone wainscot, cedar detailing, premium siding, custom roof returns — that align with neighborhood architectural standards. Permit timelines run slightly longer than Boise on custom plans (10-14 weeks vs 8-12) due to architectural compatibility review.
"We needed a place for my mother that didn't feel like an afterthought stuck behind the house. The team handled the Two Rivers HOA submission, matched our cedar-and-stone exterior down to the trim color, and finished on the timeline they quoted. It looks like it was always there."
Diane M.
Two Rivers — Kestrel detached ADU · Eagle, ID
FAQ
Eagle ADU questions, answered
Does Eagle really require ADUs to match the main house?
In most zones, yes. Eagle's design standards explicitly call for architectural compatibility — roof pitch, siding material, color, and trim. HOAs like Banbury and Two Rivers go further. We pre-spec our Eagle builds with siding profiles and color packages drawn from the primary residence so the submission clears review the first time.
I'm on equestrian-zoned acreage. Do the same rules apply?
No — RR (Rural Residential) and agriculturally-zoned parcels follow a different rulebook than standard R-1/R-2 lots. Setbacks, accessory structure rules, and septic requirements all change. We've permitted ADUs on Eagle equestrian properties and can walk through the specifics for your parcel before you commit.
Do I have to live on the property to build an ADU in Eagle?
Eagle generally requires either the primary residence or the ADU to be owner-occupied. That effectively rules out using the unit as a pure short-term rental managed from out of town. Long-term rentals, multigenerational housing, and guest use are all allowed. Always confirm current rules with the city before finalizing your plan.
Can I do a short-term rental (Airbnb) with my Eagle ADU?
Eagle's owner-occupancy expectation and the HOA covenants in most established neighborhoods make short-term rentals difficult to operate at scale. Most of our Eagle clients run 6-month or 12-month leases, which the math supports comfortably given Eagle's rent ceiling.
How long does HOA design review add to the timeline?
Plan on 4-8 weeks for HOA architectural committee review on top of city permitting, depending on the neighborhood. Banbury and Two Rivers are the most rigorous; newer master-planned communities tend to be faster. We submit to the HOA first so any required revisions happen before the city plan check.
What does a finished Eagle ADU typically rent for?
Median 1-bedroom rent in Eagle runs $1,600-$2,000+, and a well-built detached unit on a desirable lot — Banbury, Two Rivers, Eagle Hills, the Foothills — regularly clears the top of that range. 2-bedroom Kestrel builds in the right neighborhood can push beyond $2,200.
Nearby Areas
We also build in nearby cities
Zoning verified against City of Eagle / Ada County code — last reviewed May 2026.
Eagle, Idaho
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