Mesa County, CO Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Governing section
- LDC § 8.14(K)(4); Flood Fringe in § 8.14(J)(5)(c)
- Freeboard requirement
- 1 foot above base flood elevation
- Covers
- Electrical, HVAC, plumbing, service equipment
- Flood Fringe lowest floor
- Must clear 1 foot above the 100-year flood
- Subdivision data trigger
- 50 lots or 5 acres, whichever is less
Summary
New and substantially improved residential buildings in Mesa County's Special Flood Hazard Areas must set electrical, heating, plumbing, and HVAC equipment at least one foot above the base flood elevation under Land Development Code Section 8.14(K)(4). Flood Fringe District homes face the same one-foot freeboard at the lowest floor, including the basement.
All new construction and substantial improvement shall be constructed at least 1-foot above the base flood elevation for all electrical, heating, ventilation, plumbing, and air conditioning equipment and other service facilities for all residential buildings, including manufactured homes, constructed, substantially improved and/or reconstructed due to substantially damage, throughout the Special Flood Hazard Areas where base flood elevations have been determined on the FIRM or in the Flood Insurance Study.
Full Breakdown
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.
Violations & Fines
Building below the required one-foot freeboard is a violation of the Floodplain Development Permit conditions under Section 8.14(K), which Mesa County enforces through Section 11.04: the County can withhold or revoke permits and certificates for the parcel, order construction stopped, and pursue injunctive relief or Colorado-law penalties until the elevation deficiency is corrected or flood-proofed to standard.
Frequently Asked Questions
How far above the flood level must a Mesa County home's utilities sit?
Is there a freeboard rule for the whole house, not just the utilities?
Do commercial buildings get the same one-foot elevation rule?
Sources & Official References
Other rules in Mesa County
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