Type G-1 · 396 sqft studio · Kuna, ID
The Sandpiper ADU in Kuna
A Sandpiper studio ADU in Kuna starts at $145k turnkey and estimates to $1,025–$1,200/mo in rent — about 6.8–10% gross yield on a $144k–$180k Standard build. Here's how the 396 sq ft Type G-1 plan fits Kuna lots, what it costs, and how fast it permits.
- Footprint
- 396 sqft
- From (Essential)
- $145k
- Est. Kuna rent
- $1,025–$1,200
- Gross yield
- 6.8–10%
Why the Sandpiper fits Kuna lots
The Sandpiper is one of our top picks for Kuna. Sandpiper (396 sq ft + garage, Type G-1, from $145k) is a natural fit for Kuna's semi-rural and equestrian properties — you get a self-contained living unit plus dedicated garage or shop storage in a single permitted structure.
Kuna lots typically run 80-100' wide and deeper than they are wide. Newer subdivisions (Falcon Crest, the Avimor side) are standard suburban builds. Older Kuna lots near the high school and downtown are 1/4-acre minimum with mature trees and existing accessory structures (sheds, shops) that are sometimes ADU-convertible. Acreage lots on the south and east edges of town are rural-fringe with their own infrastructure profile.
Detached vs. garage in Kuna: Detached dominates Kuna because lots are large enough that the Kestrel and Kingfisher fit easily. Garage conversion is less common than in Boise or Garden City because newer Kuna homes don't have the alley-loaded detached garages that convert naturally. When a Kuna homeowner already has a shop or accessory structure with a sound foundation, conversion becomes the math.
What does a Sandpiper cost to build in Kuna?
The Sandpiper starts at $145k turnkey at Essential finish. Most Kuna owners build at Standard finish — $144k–$180k. Kuna's large lots (0.25-1+ acre is common) mean siting is rarely the constraint — the trade-off is lower rent than Boise, offset by cheaper land and almost no lot-fit friction.
| Finish Tier | Per sqft | 396 sqft in Kuna |
|---|---|---|
| Essential | $340/sqft | $121k – $151k |
| Standard | $405/sqft | $144k – $180k |
| Premium | $480/sqft | $171k – $213k |
Methodology: per-sqft rates match our cost calculator (Essential $340, Standard $405, Premium $480) with a 0.9–1.12 range factor for lot conditions. Build cost is roughly uniform across the Treasure Valley; what changes city-to-city is land, fees, the size cap, and the rent ceiling. See the full Kuna cost breakdown →
What rent and return does a Sandpiper earn in Kuna?
A studio ADU like the Sandpiper estimates to $1,025–$1,200/month in Kuna. Against a Standard-finish build of $144k–$180k, that's roughly 6.8–10% gross yield — about $13,350 a year in gross rent at the midpoint, before expenses and financing.
Monthly rent (est.)
$1,025–$1,200
studio · Kuna
Annual gross (mid)
$13,350
12 × midpoint rent
Gross yield
6.8–10%
rent ÷ Standard build
Rent is scaled from Kuna's sourced 1-bedroom median (Apartment List / Zillow Kuna, 2026) by unit size — a disclosed estimate, not a measured comp for this exact plan. Gross yield ignores vacancy, expenses, and debt service. This is information, not financial advice; validate with a local property manager before you build.
Permits and timeline for a Sandpiper in Kuna
Kuna is in Ada County and uses the City of Boise pre-approved plan set like its neighbors. Generous lots usually clear setbacks with room to spare.
Kuna's Unified Development Code permits ADUs in most residential zones, and the larger parcel sizes typical here generally make setback and lot-coverage limits easier to clear than in tighter Boise or Meridian neighborhoods. Kuna sits inside Ada County, so our pre-approved plan set carries directly across jurisdictions with minimal rework.
The Sandpiper is part of the City of Boise's pre-approved plan set, so it comes as a complete, already-engineered set of construction documents. That gives you a running start on review in Kuna (Ada County) — each city applies its own process, but a finished plan set clears review faster than a custom design.
The other 5 pre-approved plans in Kuna
Each pre-approved plan carries its own cost, rent, and lot fit in Kuna. Compare the full set for this city.
Type A · 280 sqft
Goldfinch in Kuna
The smallest pre-approved Boise ADU plan — a 280 sq ft studio that fits the tightest lots and the cleanest budgets.
$115k · est. $1,025–$1,200/mo →
Type B · 396 sqft
Waxwing in Kuna
A 396 sq ft studio with more breathing room — full living, kitchen, and bath in a thoughtfully laid-out single space.
$135k · est. $1,025–$1,200/mo →
Type C · 491 sqft
Kingfisher in Kuna
Boise's pre-approved 491 sq ft one-bedroom — separate bedroom, full kitchen, full living room, ready to permit.
$170k · est. $1,200–$1,400/mo →
Type D · 695 sqft
Kestrel in Kuna
The largest pre-approved Boise plan — a 695 sq ft two-bedroom that lives like a small house.
$245k · est. $1,525–$1,800/mo →
Type G-2 · 376 sqft
Osprey in Kuna
Sister plan to the Sandpiper — 376 sq ft studio with garage, a different layout, same pre-approved status.
$140k · est. $1,025–$1,200/mo →
The Sandpiper in nearby Treasure Valley cities
Same plan, different local rent, cost, and zoning. See how the Sandpiper pencils out a short drive away.
Sandpiper in Kuna — frequently asked
How much does a Sandpiper ADU cost in Kuna?
The Sandpiper (396 sq ft, Type G-1) starts around $145k turnkey at Essential finish in Kuna. Most Kuna owners build at Standard finish — roughly $144k to $180k. Per-square-foot build cost is close to the Boise baseline; kuna's large lots (0.25-1+ acre is common) mean siting is rarely the constraint — the trade-off is lower rent than Boise, offset by cheaper land and almost no lot-fit friction.
What can you rent a Sandpiper for in Kuna?
A studio ADU like the Sandpiper in Kuna estimates to about $1,025–$1,200 per month, scaled from Kuna's sourced 1-bedroom rent (Apartment List / Zillow Kuna, 2026). On a Standard-finish build that's roughly 6.8–10% gross yield. These are estimates, not a rent guarantee — confirm with a local property manager.
How long does it take to permit a Sandpiper in Kuna?
Kuna is in Ada County and uses the City of Boise pre-approved plan set like its neighbors. Generous lots usually clear setbacks with room to spare. The Sandpiper is a complete City of Boise pre-approved plan set, so you start with finished, already-engineered construction documents — that shortens review in every Treasure Valley city versus a custom design, even though each city applies its own process.
Does the Sandpiper fit Kuna's ADU size limit?
Almost always. At 396 sq ft the Sandpiper is a compact footprint — Boise caps ADUs at 900 sq ft, and most Treasure Valley cities set their own limit (often a share of the primary home's floor area). The Sandpiper sits well under the typical cap, so in Kuna size is rarely the constraint — lot dimensions, setbacks, and access usually decide placement. We confirm Kuna's exact size rule for your parcel during the free lot check.
Kuna, Idaho · Type G-1
Build the Sandpiper in Kuna
Free 24-hour lot check covering plan fit, your Kuna zoning, cost, and the rent it could carry. Or call (208) 297-2036.