Accessory Dwelling Unit (ADU) Permit in Gypsum, Colorado

Gypsum requires an accessory dwelling unit (adu) permit for: Maximum size: 800 sq ft or 50% of the primary dwelling's floor area, whichever is smaller; Only one ADU permitted per lot; not permitted in multi-family or mobile home park settings; Allowed forms: detached, attached, interior (upper or lower unit), above-garage, or garage conversion; mobile homes, travel trailers, and RVs are prohibited as an ADU; Property owner must reside on-site; the ADU cannot be subdivided or sold separately from the primary home; Maximum two parking spaces per ADU, in a garage or driveway (limited on-street exception); Separate trash service subscription required for the ADU; Water/sewer: monthly service fee applies; septic/well documentation required if Town water/sewer service is unavailable; Upon sale of the property, the new owner must complete a transfer of the ADU's deed restriction and records (typically handled by the realtor). If your project isn't listed, confirm with Town of Gypsum Community Development Department, Building Department at 970-524-1731 before starting work.

In Gypsum, the published New ADU Construction Fee is: $250. Additional published fees: Existing Non-Approved ADU (bring into compliance) — $500; Transfer of Existing Approved ADU (new owner) — $50 re-inspection fee; Deed Restriction Recording — $43; Trash Service Setup — $110 (container plus monthly fee); Building Permit Fee (for the ADU structure itself) — $1.00-$500.00: $50.00 | $501.00-$2,000.00: $50.00 for the first $500 plus $3.05 per additional $100 or fraction | $2,001.00-$25,000.00: $95.75 for the first $2,000 plus $14.00 per additional $1,000 or fraction | $25,001.00-$50,000.00: $417.75 for the first $25,000 plus $10.10 per additional $1,000 or fraction | $50,001.00-$100,000.00: $670.25 for the first $50,000 plus $7.00 per additional $1,000 or fraction | $100,001.00-$500,000.00: $1,020.25 for the first $100,000 plus $6.50 per additional $1,000 or fraction | $500,001.00-$1,000,000.00: $3,620.25 for the first $500,000 plus $5.00 per additional $1,000 or fraction | $1,000,000.00 and up: $6,120.25 for the first $1,000,000 plus $4.00 per additional $1,000 or fraction. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Gypsum does not publish a plan-review timeline for this permit. Contact Town of Gypsum Community Development Department, Building Department at 970-524-1731 for current turnaround.

You'll need: ADU Application / Summary Letter; Site Plan; Building Permit; ADU Deed Restriction Form; ADU Water, Sewer & Trash Form. Depending on your project, Gypsum may also ask for: ADU Deed Restriction Transfer Form. See the required-documents checklist on this page for details on each.

Gypsum requires 2 inspection(s) for an accessory dwelling unit (adu) permit, in order: Standard Building Permit Inspection Sequence, Re-inspection (ADU transfer). Schedule each through Town of Gypsum Community Development Department, Building Department (970-524-1731).

Apply through Town of Gypsum Community Development Department, Building Department at 50 Lundgren Blvd, Gypsum, CO 81637 (mailing: PO Box 130, Gypsum, CO 81637). Phone: 970-524-1731, email: stephanie@townofgypsum.com. Office hours: Building Department Staff available Monday-Friday, 8 a.m.-5 p.m., per the Building Permit Application page. Primary staff contact listed: Stephanie Roybal, Building Department Administrative Assistant. General Town phone line also published as 970-524-7514 on several Building Department sub-pages (DRB/HOA Review, Hours & Site Conditions).. Official information: https://www.townofgypsum.com/build-in-gypsum.

An ADU in Gypsum is capped at 800 square feet or 50% of the primary dwelling's floor area, whichever is smaller, and only one ADU is permitted per lot.

Yes. Per the Town's Accessory Dwelling Units page, the property owner must reside on-site, and the ADU cannot be subdivided or sold separately from the primary home.