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The Kestrel pre-approved ADU exteriorType D

Type D · Boise Pre-Approved · 2 Bedroom

The Kestrel695 sqft 2-Bedroom ADU

Boise's largest pre-approved plan — 695 sq ft, 2 bedrooms, lives like a small house.

Updated May 18, 2026

Footprint
695 sqft
Bedrooms
2
Baths
1
Plan Type
Type D
Permit timeline
3–5 wks

What is the Kestrel?

The Kestrel is the largest of Boise's six pre-approved ADU plans and the only pre-approved 2-bedroom — 695 sq ft, two private bedrooms, an open kitchen-dining-living, and a full bathroom. From $245k turnkey at Essential finish. Permits as fast as the smaller plans (3-5 weeks) because it's part of the same City of Boise pre-approved set. The right choice when one bedroom isn't enough.

The Kestrel is the biggest of the six pre-approved plans and the only true two-bedroom. 695 sq ft, two bedrooms, a full kitchen, dining nook, and a real living room. Permits as fast as the smaller plans because it's part of the same city-approved set.

Floor plan

The Kestrel floor plan

The full dimensioned plan set — room layout, window and door schedule, and elevations — lives on Boise.gov as the official Type D pre-approved set.

Type D Plan PDF (Boise.gov)(opens in new tab)

How much does the Kestrel cost in Boise?

The The Kestrel starts at From $245k turnkey at Essential finish. Final price depends on finish level and lot conditions. The table below shows total build cost ranges at three finish tiers — same per-square-foot math used in our cost calculator.

Finish TierPer sqft695 sqft Total Range
Essential$340/sqft$213k$265k
Standard$405/sqft$253k$315k
Premium$480/sqft$300k$374k

Roughly $2,050/mo on a 20-yr HELOC at ~8% APR. Run your own numbers →

Methodology: ranges reflect 2026 BoiseADU.com active job pricing. Includes site work, foundation, framing, MEP rough-in, insulation, drywall, roofing, siding, finish carpentry, cabinets, counters, flooring, fixtures, and paint. Excludes furniture, premium appliances, landscaping, and fences.

Included

In your turnkey price

  • Site work & excavation
  • Foundation
  • Framing
  • MEP rough-in (mechanical, electrical, plumbing)
  • Insulation
  • Drywall
  • Roofing
  • Siding
  • Finish carpentry
  • Cabinets & counters
  • Flooring
  • Fixtures
  • Interior & exterior paint

Not included

Budget separately

  • Furniture
  • Premium appliance upgrades
  • Landscaping
  • Fences
  • Impact / SDC fees
  • Utility infrastructure upgrades

When the Kestrel is the right pick

Family ADU

Two bedrooms means a couple plus a child, or two siblings, or a parent + caregiver. Open kitchen-dining-living + full bath = a real second household on the lot.

Premium long-term rental

Two-bedroom Boise rents in the $1,900-$2,400/mo range support the higher build cost. Yields are slightly lower than the Kingfisher (8-10% gross) but tenant pool is much wider — and turnover is lowest of any plan.

Multigenerational with multiple occupants

Aging parent + adult-child caregiver, or two siblings sharing, or a parent + grandchild — anything where one bedroom isn't enough. The Kestrel keeps everyone independent on one ADU.

Long-term roommate situations

Two graduate students, two traveling nurses sharing, or two professionals splitting rent — the Kestrel's two-bedroom layout works where studios and 1-bedrooms force tenants to share spaces awkwardly.

When another plan is a better fit

If your lot can't fit 695 sq ft

The Kestrel needs more lot than the smaller plans. If yours is foothills-steep, narrow infill, or constrained by mature trees you don't want to cut, the Kingfisher or one of the studio plans is more realistic.

If your budget caps at $200k

Don't stretch for the Kestrel and end up at Essential finish if the Kingfisher would let you build at Standard or Premium. Build quality compounds; square footage doesn't.

Specifications

The Kestrel specs

Dimensions
Square footage695 sqft
Building footprint30' × 24'
Layout
Bedrooms2
Bathrooms1
Configuration2 Bedroom
Plan typeType D
Permitting & build
Permit pathPre-approved · 3–5 weeks
Build window5–7 months typical
PricingFixed-price turnkey
BuilderConstruction by Iron Crest, RCE-6681702

The Kestrel by city

Local cost, estimated rent, gross yield, and lot fit for the Kestrel in each Treasure Valley market. It's one of our top picks in Meridian, Eagle, Kuna, Star, Middleton, Emmett, Payette, Mountain Home, Homedale and Parma.

The Kestrel vs The Kingfisher

The Kingfisher is 491 sq ft 1-bedroom from $170k — $75k less than the Kestrel and 204 sq ft smaller. If you don't specifically need two bedrooms, the Kingfisher returns better yield per dollar invested. Pick the Kestrel only when two bedrooms is the actual requirement.

The other 5 pre-approved plans

The Goldfinch ADU exterior — Type A pre-approved Boise planType ASmallest

The Goldfinch

Smallest footprint, fastest permit, lowest entry cost.

Sqft
280
Beds
Studio
Baths
1

From $115k

The Waxwing ADU exterior — Type B pre-approved Boise planType BRental

The Waxwing

Studio living with room to actually live.

Sqft
396
Beds
Studio
Baths
1

From $135k

The Kingfisher ADU exterior — Type C pre-approved Boise planType C1-Bed

The Kingfisher

The landlord favorite — a real, walled-off bedroom.

Sqft
491
Beds
1
Baths
1

From $170k

The Sandpiper ADU exterior — Type G-1 pre-approved Boise planType G-1+ Garage

The Sandpiper

Studio + garage on one pad, one permit.

Sqft
396
Beds
Studio
Baths
1

From $145k

The Osprey ADU exterior — Type G-2 pre-approved Boise planType G-2+ Garage

The Osprey

Studio + garage, built for narrow side-yard lots.

Sqft
376
Beds
Studio
Baths
1

From $140k

The Kestrel — frequently asked questions

What's the biggest pre-approved ADU plan in Boise?

The Kestrel — 695 sq ft, the only pre-approved plan with two bedrooms. From $245k turnkey at Essential finish, $345k at Premium. Permits in the same 3-5 week pre-approved window as the smaller plans.

Is the Kestrel the only 2-bedroom pre-approved plan?

Yes. The other five City of Boise pre-approved plans are studios or 1-bedroom. For two bedrooms inside the pre-approved track (skipping 4-8 weeks of design review), the Kestrel is the only option.

Can the Kestrel work for a small family?

Yes — 695 sq ft is comparable to a starter apartment. Two bedrooms + open kitchen-dining-living + full bath supports a couple with one child, or two adults plus an occasional guest setup. Tighter than a 1,200 sq ft single-family but workable.

What's the rental yield on a Kestrel?

Typical 2-bedroom Boise long-term rent of $1,900-$2,400/mo on a $245k Essential build = roughly 9-12% gross yield. Slightly lower than the Kingfisher per dollar invested, but the tenant pool for 2-bedrooms is wider and turnover is lowest of any plan.

Does the Kestrel cost twice as much as the Goldfinch?

Roughly — $245k Kestrel vs $115k Goldfinch at Essential. The Kestrel is 2.5x the square footage with two bedrooms and a real living room. Per-square-foot cost is comparable; the absolute number is bigger because the building is bigger.

Will the Kestrel fit your lot?

Get a free desk feasibility review — setbacks, access, utilities, and Kestrel plan fit on your specific lot. Or call (208) 297-2036 to talk it through.

Get a Free ADU Lot Check