ADU Contractor in Burley, Idaho
Twin Falls ADU Guys builds ADUs in Burley and across Cassia County. Same full-service process — feasibility, design, permitting, and construction.
ADU Services in Burley
Burley is the Cassia County seat and one of the larger communities we serve in the eastern Magic Valley. Homeowners in Burley have the same strong reasons to add an ADU — rental income, multi-generational housing, and significant property value appreciation. We handle the Burley permitting process and work with local Cassia County zoning requirements on your behalf.
Permitting in Burley
Burley (population ~11,700) is over 10,000, so Idaho SB 1354 requires it to allow at least one ADU per single-family lot by-right. For unincorporated county / Burley Area of City Impact parcels, Cassia County code allows a 300-1,000 sq ft ADU on a 1-acre-minimum lot with a recorded deed restriction. We confirm which jurisdiction your parcel falls under during the Feasibility Check.
ADU Rules in Burley
SB 1354 appliesBurley (2020 Census 11,704) is over 10,000, so Idaho SB 1354 (effective July 1, 2026) requires it to allow at least one ADU per single-family lot by-right and amend its code by February 1, 2027.
- Zoning authority
- In-city: City of Burley Planning & Zoning, 1401 Overland Ave (208-878-2224, City Planner Spencer McArthur). Unincorporated county / Area of City Impact: Cassia County Zoning & Building, 1459 Overland Ave Rm 210 (208-878-7302, bldgdept@cassia.gov).
- ADU size limit
- Unincorporated Cassia County / Burley Area of City Impact: 300-1,000 sq ft (excluding garage), 1-acre minimum lot, one ADU per lot, attached or detached (Cassia County Code 9-9-4(W)). An in-city Burley cap was not separately confirmed — verify with the City Planner. SB 1354 also bars bound cities from capping below 1,000 sq ft / 75% of primary.
- Setbacks
- Unincorporated county: 54 ft from road center, 15 ft interior (houses), 10 ft (accessory buildings). In-city R-1: an accessory building with sleeping quarters keeps the district side yard and sits at least 25 ft from the rear line. Confirm in-city values with the City Planner.
- Permits & fees
- No ADU-specific permit fee is published for either jurisdiction; building permits are valuation-based. Get a quote from the office above.
- Owner-occupancy
- County: a recorded Declaration of Restriction (no separate sale, common ownership, <=1,000 sq ft) is required before permit issuance. SB 1354 prohibits bound cities from requiring owner-occupancy.
- Typical 1BR ADU rent
- $850-$1,000/month (estimate)
What an ADU Can Do for Burley Homeowners
ADU Types We Build
- ✓Detached new build ADU
- ✓Garage conversion ADU
- ✓Attached ADU addition
- ✓Pre-fabricated ADU installation
- ✓Basement conversion (where applicable)
Full-Service Includes
- ✓Feasibility assessment + site visit
- ✓Custom ADU design
- ✓All permit applications and coordination
- ✓General contracting + all trades
- ✓Final inspection + Certificate of Occupancy
Idaho SB 1354 Protects Your Right to Build in Burley
Because Burley has a population over 10,000, Idaho Senate Bill 1354 (effective July 1, 2026) requires it to allow at least one ADU per single-family lot as a by-right use, and the city must align its code by February 1, 2027. Separately, Idaho HB 166 protects an internal ADU on an owner-occupied homestead from HOA bans. Learn more about Idaho ADU law →
How We Build Your ADU in Burley
The same proven 4-step process we use across the Magic Valley
Free Readiness Call
10-15 minutes. We learn about your property and goals, and confirm whether a Feasibility Check makes sense.
Feasibility Check ($250-$750)
On-site visit, measurements, zoning verification with your local planning department, utility assessment, and a complete report with budget range.
Design + Permits
We design your ADU to code and handle every permit application with your city and county building department.
Construction
Our licensed team handles all trades — framing, plumbing, electrical, HVAC, and finishes. One team, start to finish.
Plan Your ADU in Burley
Whether you are just researching or ready to start, here is everything you need to know about building an ADU in Cassia County.
Cost in Burley
ADU pricing for Cassia County — garage conversion vs detached vs prefab, with hidden costs explained.
Permits in Burley
How we handle the full permit process — Zoning Use Permit, building permits, trade permits, inspections.
Financing Options
HELOC, construction loans, cash-out refinance, FHA — how Burley homeowners pay for their ADU.
Idaho ADU Law
HB 166, HOA rules, the 45% size rule — what state and local law actually requires.
Also Serving Near Burley
We serve all of Cassia County and surrounding communities. If you are near Burley, we can help — contact us to confirm availability for your specific location.
Ready to Build an ADU in Burley?
Start with a free 10-15 minute Readiness Call. We'll assess your property, walk through the local permit process, and tell you exactly what's possible.