ADU Contractor in Jerome, Idaho
Building an ADU in Jerome? Twin Falls ADU Guys serves Jerome homeowners with the same full-service approach — feasibility, design, permitting, and construction.
ADU Services in Jerome
Jerome is one of our most active service areas outside of Twin Falls. Just 12 miles east on I-84, Jerome has a growing residential base and strong interest in ADUs for rental income, family housing, and property value. Jerome operates its own building and planning department, and we work closely with city staff to keep your project moving efficiently.
Permitting in Jerome
Jerome (population ~13,100) is over 10,000, so Idaho SB 1354 requires the city to allow at least one ADU per single-family lot by-right. Jerome is also actively updating its own ADU ordinance (Title 17). We verify your zoning district and the current code with City P&Z during the Feasibility Check.
ADU Rules in Jerome
SB 1354 appliesJerome (population ~13,100) 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 to amend its code by February 1, 2027. The city is separately adding ADU standards to its own municipal code (Title 17) as a Special Use.
- Zoning authority
- City of Jerome Planning & Zoning, 152 E Avenue A (208-324-8189 x140, Ida Clark, iclark@cityofjerome.org). Parcels in unincorporated county go to Jerome County P&Z.
- ADU size limit
- A maximum of 850 sq ft appears in the City's 2025 draft ADU ordinance — but that text is at the proposal stage and not yet confirmed as finally codified. SB 1354 also sets a statewide floor (no cap below 1,000 sq ft / 75% of primary). Confirm the current figure with City P&Z before relying on it.
- Setbacks
- Per the city's draft ADU ordinance: the structure must meet the zone's setbacks and not exceed the primary dwelling height; a detached ADU sits at least 10 ft from the rear line and cannot be in a front/street-side yard or easement. Confirm final values with City P&Z.
- Permits & fees
- Jerome charges a Special Use Permit fee + valuation-based building permits; no flat ADU fee is published. Get an exact quote from City P&Z.
- Owner-occupancy
- No owner-occupancy mandate; the ADU cannot be sold separately from the primary dwelling. SB 1354 also bars bound cities from requiring owner-occupancy.
- Typical 1BR ADU rent
- $850-$1,300/month (estimate)
What an ADU Can Do for Jerome 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 Jerome
Because Jerome 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 Jerome
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 Jerome
Whether you are just researching or ready to start, here is everything you need to know about building an ADU in Jerome County.
Cost in Jerome
ADU pricing for Jerome County — garage conversion vs detached vs prefab, with hidden costs explained.
Permits in Jerome
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 Jerome 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 Jerome
We serve all of Jerome County and surrounding communities. If you are near Jerome, we can help — contact us to confirm availability for your specific location.
Ready to Build an ADU in Jerome?
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.