ADU Permit Submission Checklist in Boise, Idaho
Everything you need to apply for a adu permit in Boise, Idaho — documents, fees, steps, and a downloadable submission packet.
Key Facts
- Permit required
- Yes
- Submission method
- Online
- Typical fee range
- $2,700 – $8,250
- Review time
- Varies by jurisdiction
- Inspections
- 6 inspections required
ADU Permit Checklist
Boise — 7 required, 0 optional
Forms & Applications(1)
Plans & Diagrams(5)
Supporting Documents(1)
This checklist is for reference only. Requirements may change — always verify with Boise before submission.
Avoid rejections — generate a submission-ready packet
Get a personalized ADU permit packet for Boise, Idaho — tailored to your project details.
- Required forms: Building Permit Application, and more
- Pre-filled templates: Permit Cover Sheet
- Fee breakdown: $900–$5,000 estimated total
- Step-by-step City of Boise Planning and Zoning Department portal submission guide
- Inspection prep checklist (6 items)
- Personalized for your specific project details
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Required Documents
Boise requires the following documents for this permit application.
Building Permit Application
Completed City of Boise building permit application with complete project description, property owner contact information, and construction cost estimates
Architectural Drawings
Complete architectural plans signed by a licensed Idaho architect, including floor plans, elevations, sections, and construction details
Site Plan
Site plan showing property boundaries, dimensions, building footprint, setbacks, parking layout, access routes, and existing utilities
Zoning Verification Letter
Zoning verification letter from Boise Planning confirming property zoning district and ADU eligibility under current zoning ordinance
Structural Engineering Plans
Structural engineering plans and calculations by a licensed Idaho professional engineer for foundation, framing, and load-bearing elements
Mechanical and Utility Plans
Plans showing water supply, sewer, electrical, gas connections and separate metering for water, electric, and gas services to ADU
Proof of Property Ownership
Current property deed or title commitment showing applicant ownership of subject property
Permit Process
Follow these steps to submit your permit application through City of Boise Planning and Zoning Department.
- 1
Zoning Eligibility Verification
Obtain zoning verification letter from Boise Planning confirming ADU is allowed in property zoning district and meets dimensional requirements
You'll need: Zoning Verification Letter, Proof of Property Ownership
- 2
Submit Building Permit Application
Submit complete permit application with architectural, structural, utility plans and all required supporting documentation to Boise Planning and Zoning
You'll need: Building Permit Application, Architectural Drawings, Site Plan, Structural Engineering Plans, Mechanical and Utility Plans
- 3
Plan Review and Approval
Boise Planning conducts comprehensive plan review for compliance with zoning ordinance, Idaho Building Code, and design standards
- 4
Address Plan Review Comments
Revise and resubmit plans as needed to address any code compliance issues or comments raised during plan review
- 5
Permit Issuance and Payment
Pay all permit fees and receive approved building permit authorizing construction to begin
- 6
Construction Inspections
Schedule and pass required inspections: foundation, framing, electrical, plumbing, mechanical, and final inspection per Idaho Building Code
- 7
Certificate of Occupancy
Receive Certificate of Occupancy from Boise Building Official upon successful final inspection and code compliance verification
Fees and Timeline
Fee Breakdown
| Fee | Range | Confidence |
|---|---|---|
| ADU Permit Fee | $1,800 – $5,000 | Verified |
| Plan Review Fee | $900 – $3,250 | Verified |
Inspections Required
Foundation and footing inspection per Idaho Building Code
Foundation and footing inspection per Idaho Building Code
Framing and structural member verification
Framing and structural member verification
Electrical rough-in and separate service panel inspection
Electrical rough-in and separate service panel inspection
Plumbing rough-in and fixture installation inspection
Plumbing rough-in and fixture installation inspection
Mechanical systems and HVAC installation inspection
Mechanical systems and HVAC installation inspection
Final inspection and Certificate of Occupancy
Final inspection and Certificate of Occupancy
Authority Sources
Data on this page is sourced from official records published by the permitting authority. Always verify requirements directly before submitting.
Verified February 15, 2026
Verified February 15, 2026
Verified February 15, 2026
Verified February 15, 2026
Frequently Asked Questions
- Do I need a adu permit in Boise?
- Yes. Boise requires a adu permit for this type of project. Submitting without a permit may result in fines, required removal, or complications when selling your property.
- How long does adu permit approval take in Boise?
- Processing times in Boise vary depending on project complexity and current review volume. The process involves 7 steps. Contact Boise Development Services for current timelines.
- What documents are required for a adu permit in Boise?
- Boise requires 7 documents including Building Permit Application, Architectural Drawings, Site Plan, Zoning Verification Letter, and others. See the full list above for details.
- What happens if I build without a adu permit in Boise?
- Building without a permit in Boise can result in stop-work orders, fines, required removal of work, difficulty selling your property, and insurance complications. It is strongly recommended to obtain proper permits before starting work.
- Can PermitMagic help prepare my adu permit submission in Boise?
- Yes. PermitMagic generates a submission-ready packet tailored to Boise's requirements, including a document checklist, workflow steps, and authority references. Start a permit plan to get your personalized packet.
- How much does a adu permit cost in Boise?
- ADU permit fees in Boise typically range from $2,700 to $8,250, depending on project scope. Fees may include building permit, plan review, and technology surcharges. Verify current fees with Boise.
Related Permits
Other permits in Boise
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