Denver Home Addition Permits 2026
Denver home addition permit fees, plan review, and required inspections for 2026.
Denver Home Addition permit basics
- Building department: Denver Department of Community Planning and Development
- Department URL: https://www.denvergov.org/cpd
- Permit fee typical: $400 - $3,500 permit fee
- Plan review + approval: 7-20 business days; e-permits available for simple work
- Inspections required: 6-12 inspections (footing, framing, electrical, plumbing, mechanical, insulation, drywall, final)
Denver Home Addition common issues
Setback compliance, FAR (floor-area ratio), structural review required, sewer/water capacity may need upgrade.
Denver-specific permitting context
Denver is a Home Rule city with its own sales tax + building code. Denver requires city contractor license separate from state. Hailstorm market means roofing contractors face strict insurance fraud regulations.
Climate factors: High altitude with intense UV degrading roofing; severe hailstorms; snow loads moderate; freeze-thaw on foundations
Colorado licensing for Home Addition contractors
No statewide GC license; municipal/county requirements apply (Denver, Boulder, Aurora, Colorado Springs) - no statewide license, but Denver likely requires local registration.
Mechanics lien deadline in Colorado: 4 months from last work (2 months for residential). Preliminary notice: Notice of intent to file lien served 10 days before recording.
Denver Home Addition sales tax
Colorado sales tax: 2.9% + local (~7.8% combined avg). Real property labor exempt. 70+ home-rule cities administer their own tax separately from state.
Verify with the Colorado Department of Revenue.
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