Fort Collins ADU Permit Fees & Cost Calculator
Fort Collins publishes an ADU page that names a mandatory Basic Development Review fee of $6,925 and says total ADU-related fees are often $20,000-$25,000, with utility, transportation, and building-permit charges still needing project-specific verification. A city grant proposal in 2026 may affect future fee waivers, but it was not yet a usable program in the provided sources.
Free ADU fee calculator
Estimate local ADU fees
Step 1 of 5: Location
The calculator uses staged city data from the ADUFee database with visible confidence levels and dated source tracking.
Fee overview
The 2026 grant-related fee waiver discussion is preliminary and not yet an official fee reduction program in the provided sources.
Do not rely on third-party estimates for exact permitting costs without confirming with the City of Fort Collins, Larimer County, and the relevant utilities.
Fee totals can change based on valuation, utility service needs, parcel constraints, and whether capital expansion or road impact fees apply.
The ADU is within Fort Collins city limits and subject to the city ADU process described on the official ADU page.
Exact utility, transportation, and building permit amounts were not available in the provided official source and therefore are left unspecified.
The city’s $20,000-$25,000 total-fee figure is treated as a planning estimate, not a final project quote.
FAQs
Are Fort Collins ADU fee estimates official?
No. ADUFee.com provides planning estimates only. Final fees are set by the city, utility providers, school district, and other agencies.
What sources are used for Fort Collins?
The database stores city, state, utility, school, county, and other source links where available. Each estimate should still be verified locally.
Can ADU fees vary within Colorado?
Yes. Permit, utility, school, inspection, and impact fees can vary by jurisdiction, parcel, project size, utility provider, and local interpretation.