Unincorporated Jefferson County
Jefferson County home permits
General info only. Check with a licensed pro and your local building department.
In unincorporated Jeffco, a building permit is a two-part review: Planning & Zoning, then Building Safety.
Office: Jeffco Division of Building Safety
| Topic | What the office says | Source |
|---|---|---|
| Size rule | Building Permit for all structures over 120 sq ft, over 14 ft tall, or within 10 ft of a habitable structure; others may need a Miscellaneous Permit. | Official page checked 2026-10-30 |
| Interior remodels | Moving, modifying or removing walls or windows needs a Building Permit. Cabinet, flooring or counter replacement in the same spot may not. | Official page checked 2026-10-30 |
| Timeline | P&Z review about a month; Building Safety plan review about 3–6 weeks (per checklist). | Official page checked 2026-10-30 |
| Inspections | Scheduled online anytime; by phone Mon–Thu 303-271-8260, by 5 p.m. the day before. | Official page checked 2026-10-30 |
| New codes | 2024 codes and fee schedule apply to permits applied for as of July 1, 2026. | Official page checked 2026-10-30 |
| Fee amounts | Unknown Unknown — the official page we checked doesn't say. Ask the office. | Official page checked 2026-10-30 |
Basic steps
- Planning & Zoning review
- Building Safety review
- Permit issued
- Inspections
Fees
Inspections
- Footing
- Foundation
- Framing
- Final (see county code R109)
Checked 2026-10-30. Rules change — confirm with the office. See something wrong? Tell us.