Affordable Workforce Housing Mitigation in Summit County, Colorado

A per-square-foot impact fee -- or a private transfer fee instead

Section 3809 of the Summit County Land Use and Development Code, read together with the county's Affordable Workforce Housing Deed Restriction Guidelines, authorizes a development impact fee of up to two dollars per square foot on new construction and additions in unincorporated Summit County. The funds collected go toward the county's affordable workforce housing efforts -- purchasing land, building new homes, and buying existing homes for deed-restricted, workforce-only use. For anyone planning to build a home or a substantial addition on raw land here, this fee is a real, budgetable line item tied directly to the size of what you build, not a vague policy background fact.

The county also offers property owners a structural alternative: rather than paying the impact fee at the time a building permit is issued, an owner can voluntarily attach a private transfer fee to the property, which becomes payable upon a future sale instead of upfront. That choice has real trade-offs -- paying the impact fee now is a known, one-time cost tied to today's construction, while a private transfer fee defers the cost but attaches an obligation that follows the property (and reduces net proceeds) whenever it's eventually resold. Anyone evaluating raw land with an eye toward building should ask which option a specific project would use and run the numbers both ways before committing.

ADUs come with a workforce-occupancy condition

Summit County permits accessory dwelling units on qualifying parcels, but with a condition worth knowing before you count on ADU income as part of a purchase decision: ADUs approved under the county's workforce-housing framework must be rented to members of the local workforce, not simply to any tenant of the owner's choosing, and typically carry their own deed restriction. That's a materially different rental picture than an unrestricted ADU, and it means an ADU shouldn't be assumed to function as a flexible short-term or open-market rental unit without confirming its specific restriction first.

What to verify before you build

• Confirm the current per-square-foot impact fee rate with Summit County's Housing Department -- the fee is set by Board of County Commissioners resolution and can be adjusted over time.
• Ask whether the private-transfer-fee alternative is available for your specific project, and get the actual fee terms in writing before assuming it's a simple opt-out of the upfront cost.
• If a parcel or listing references an existing or planned ADU, confirm whether it carries a workforce-occupancy deed restriction before assuming it can be rented on the open market or as a short-term rental.
• Check how the impact fee or deed-restriction requirement interacts with the county's Land Use and Development Code zoning already covered on the county hub, since zoning district and buildable area still govern what you can construct in the first place.