Longmont, CO Property Maintenance: Property Blight (2026)
Key Facts
- Governing section
- LMC § 16.20.100 (IPMC 111.1.5)
- Damage threshold
- 33% supporting / 50% non-supporting
- Enforcement
- Condemnation, closure, demolition powers
- Cost recovery
- Lien plus 20% admin fee
Summary
Longmont expands the International Property Maintenance Code's dangerous-structure criteria with local additions covering structural failure risk, wracked or buckled walls, and buildings that have lost required strength or fire resistance.
12.Any portion or member or appurtenance thereof is likely to fail, or to become detached or dislodged, or to collapse and thereby injure persons or damage property.... 15.The building or structure, exclusive of the foundation, shows 33 percent or more damage or deterioration of its supporting members, or 50 percent damage or deterioration of its non-supporting members, enclosing or outside walls or coverings.
Full Breakdown
Longmont Municipal Code § 16.20.100 amends IPMC Section 111.1.5 by adding seven local criteria for declaring a structure or premises dangerous, including members likely to fail, detach, or collapse; walls that have wracked, warped, buckled, or settled beyond safe tolerances; structures showing 33 percent or more damage to supporting members or 50 percent to non-supporting members; and buildings that have lost required strength, fire-resisting, or weather-resisting qualities. A dangerous-structure finding triggers the city's condemnation, closure, and demolition powers under §§ 16.20.110-.140, with the cost of any city-ordered abatement assessed as a lien against the property.
Violations & Fines
Occupying or maintaining a condemned dangerous structure without written code-official authorization violates § 16.20.120 and can trigger city-ordered demolition with costs, plus a 20 percent fee, liened against the property.
Frequently Asked Questions
What makes a building 'dangerous' under Longmont's code?
What happens after Longmont condemns a dangerous building?
Sources & Official References
Other rules in Longmont
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