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§ 02
When a permit is required
Permit triggers and exempt work for Gem County
A building permit is required for all construction and structural changes to property in unincorporated Gem County, including new buildings, additions, renovations, mechanical/electrical/plumbing work, roofing, and demolition.
Note: Contact Gem County Development Services at (208) 365-5144 to confirm whether specific work requires a permit.
Required documents
- Completed building permit application form
- Two sets of construction plans drawn to scale with full dimensions
- Proof of property ownership (deed or property tax assessment)
- Zoning certificate or verification of allowed use
- Contractor registration documentation (if contractor and contract value exceeds $2,000)
- Grading plan (if applicable for 1+ acre land disturbance)
- Septic/utility plans (if applicable)
- Building code
- 2018 International Building Code (IBC), 2018 International Residential Code (IRC), 2018 International Energy Conservation Code (IECC), 2018 International Mechanical Code (IMC), 2018 International Fire Code (IFC), 2017 National Electrical Code (NEC), 2015 International Swimming Pool and Spa Code (ISPSC), and 2018 State Energy Code (IECC + ASHRAE 90.1-2016), with Idaho amendments.
- Permit validity
- Permit is valid upon posting at the job site. Work must not commence until permit is posted.
- Owner-builder
- Property owners may perform work on their own property. Contractors performing work with a contract value exceeding $2,000 must register with Idaho Division of Occupational and Professional Licenses (DOPL).
- Contractor requirements
- Contractors with contract value exceeding $2,000 must register with DOPL. No exam or bond required; annual registration fee approximately $30-50. Contractors must obtain permits in their own name; homeowner permits cannot be used by contractors.
§ 03
Application process
Typical processing: 2-10 business days for plan review. Minor repairs and renovations: 2-5 days. Residential new construction: 5-10 days. Commercial or complex projects: 2-4 weeks.
- 01 Download the appropriate building permit application form from the Gem County Development Services website.
- 02 Prepare two sets of construction plans drawn to scale with full dimensions, including building footprint, setbacks, roof design, foundation type, and utility locations.
- 03 Gather required documents: proof of property ownership, zoning certificate, and contractor registration documentation (if contract value exceeds $2,000).
- 04 Submit application and plans in-person at 109 S McKinley Avenue or by mail to Gem County Development Services.
- 05 County staff conducts plan review (2-10 business days depending on project complexity).
- 06 Pay permit fees upon approval.
- 07 Permit is issued and must be posted at the job site; work cannot begin until permit is posted.
- 08 Schedule inspections as work progresses (foundation, framing, MEP, final).
Typical processing time: 2-10 business days for plan review. Minor repairs and renovations: 2-5 days. Residential new construction: 5-10 days. Commercial or complex projects: 2-4 weeks.
§ 04
Required inspections
Scheduling and sequence
How to schedule
- (208) 365-4743 (phone)
- Scheduling deadline
- Inspections are typically scheduled within 1-2 business days of request.
- Inspection hours
- Monday 8:00 AM-4:00 PM, Tuesday 8:00 AM-5:00 PM, Wednesday 9:00 AM-5:00 PM, Thursday Closed, Friday 8:00 AM-5:00 PM
Typical sequence: Typical sequence: foundation/footing, framing, mechanical/plumbing/electrical (MEP), final inspection.
§ 05
Frequently asked
Common questions about unincorporated Gem County permits
01 Do I need a building permit in unincorporated Gem County, ID? ▸
A building permit is required for all construction and structural changes to property in unincorporated Gem County, including new buildings, additions, renovations, mechanical/electrical/plumbing work, roofing, and demolition.
02 How do I apply for a building permit in unincorporated Gem County, ID? ▸
To apply for a building permit in unincorporated Gem County, ID, follow these steps: 1. Download the appropriate building permit application form from the Gem County Development Services website. 2. Prepare two sets of construction plans drawn to scale with full dimensions, including building footprint, setbacks, roof design, foundation type, and utility locations. 3. Gather required documents: proof of property ownership, zoning certificate, and contractor registration documentation (if contract value exceeds $2,000). 4. Submit application and plans in-person at 109 S McKinley Avenue or by mail to Gem County Development Services. 5. County staff conducts plan review (2-10 business days depending on project complexity). 6. Pay permit fees upon approval. 7. Permit is issued and must be posted at the job site; work cannot begin until permit is posted. 8. Schedule inspections as work progresses (foundation, framing, MEP, final).
03 How long does it take to get a building permit in unincorporated Gem County, ID? ▸
Building permit processing times in unincorporated Gem County, ID typically run 2-10 business days for plan review. Minor repairs and renovations: 2-5 days. Residential new construction: 5-10 days. Commercial or complex projects: 2-4 weeks.. Timelines can vary based on project complexity and current department workload.
04 How do I schedule a building inspection in unincorporated Gem County, ID? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in unincorporated Gem County, ID via: (208) 365-4743. Inspections are typically scheduled within 1-2 business days of request..
last verified April 2026
source Gem County Development Services Department ↗
entry id permits/idaho/gem/unincorporated
Educational reference. Permit rules and fees change — confirm current requirements directly with Gem County Development Services Department before applying. Jaspector is not legal advice.