Mesa County, CO Environmental Rules: Flood Elevation Requirements (2026)

14(K) lists the conditions the Floodplain Administrator must impose on every Floodplain Development Permit, and paragraph (K)(4) sets the county's one-foot freeboard standard: all new construction and substantial improvement of residential buildings, including manufactured homes, throughout the Special Flood Hazard Areas where a base flood elevation has been set on the FIRM or in the Flood Insurance Study must have electrical, heating, ventilation, plumbing, and air conditioning equipment and other service facilities built at least one foot above that base flood elevation. 14(J)(5)(c)(3) applies the identical one-foot elevation or flood-proofing standard to new commercial, industrial, or other nonresidential structures and their utilities.

14(K)(2) sets out detailed anchoring specifications for manufactured homes, including tie requirements at each corner capable of carrying 4,800 pounds. 14(K)(6)(d) requires base flood elevation data for any subdivision proposal of at least 50 lots or 5 acres, whichever is less, so the freeboard figure is established before lots are sold.