Building Safety in Longmont, CO (2026)
8 verified building safety rules for Longmont, Colorado, sourced directly from the municipal code and official government pages.
Verified from official government sources
Elevator Maintenance
Longmont amends International Building Code Section 3001.1 to add one enforceable line: every elevator in the city must be inspected annually. The chief building official's inspection division enforces the requirement under chapter 16.04 of the Longmont Municipal Code, and elevator installation or repair work must be performed by a contractor holding the city's Class D-11 elevator specialty license.
Longmont's Annual Elevator Inspection Rule
Some RestrictionsLongmont Municipal Code § 16.04.450
Section 3001.1 of the International Building Code is amended by the following addition to sentence one: All elevators shall be inspected annually. ( Ord. No. O-2026-23 , § 1, 6-9-2026) Sec. 16.04.450. - Section 3202.3.1 added; awnings, canopies, marquees and signs.
Fire Sprinkler Requirements
Longmont has not adopted the model code's mandate for automatic fire sprinklers in new one- and two-family homes. Longmont Municipal Code § 16.06.200 amends International Residential Code Section R313.2 by inserting language that expressly defers those sprinkler provisions to a future code adoption, so builders of most detached and duplex homes in the city face no sprinkler mandate under this section today.
Longmont Defers Home Sprinkler Mandate
Few RestrictionsLongmont Municipal Code § 16.06.200
Section R313.2 of the International Residential Code is amended by the insertion of, "The provisions of this section shall be considered for future code adoption." at the beginning of sentence one.
Childcare Center Rules
Longmont's amended International Existing Building Code lets a home caring for five or fewer children, or five or fewer people receiving custodial care, stay classified as a Group R-3 residential occupancy instead of a commercial Group E or institutional Group I-4 use. The exception, at Municipal Code section 16.40.200, spares small in-home day cares from the sprinkler retrofit section 803.2 would otherwise force during renovation work.
Longmont Small Home Day Care Occupancy Exception
Some RestrictionsLongmont Municipal Code § 16.40.200
Section 803.2 of the International Existing Building Code is amended by addition of the following three exceptions: Exception: 1. Group E, day care facilities. Five or fewer children in a dwelling unit. A facility such as the one described in section 305.2.3 of the International Building Code within a dwelling unit and having five or fewer children receiving such day care shall be classified as...
Carbon Monoxide Detectors
Longmont requires carbon monoxide detection in every dwelling unit with a fuel-fired appliance, fireplace, or attached garage under Longmont Municipal Code § 16.20.380, which rewrites the adopted International Property Maintenance Code's Section 705.1. Detectors must sit within 15 feet of sleeping areas, and a triggering sale, ownership change, or permitted alteration locks in the duty.
Longmont Carbon Monoxide Detector Requirement
Some RestrictionsLongmont Municipal Code § 16.20.390
705.1. General. Carbon monoxide detection must be provided in every residential occupancy with a fuel-fired appliance or fireplace or an attached garage that has been offered for sale or changed ownership, or that has had interior alterations, repairs, fuel-fired appliance replacements, or additions that require a permit, on or after July 1, 2009. Carbon monoxide detection shall be installed in...
Building Permits
Renovating, remodeling, or adding onto an existing Longmont building triggers full code compliance for the whole space once the work exceeds 50 percent of the floor area within a 24-month period.
Longmont Renovation 50 Percent Rule
Some RestrictionsLongmont Municipal Code § 16.40.170
When within any 24-month period, renovation, remodeling, modification or additions to any existing occupancy exceeds 50 percent of the floor area, the entire occupancy shall comply with the requirements of chapter 9 of the International Fire and the International Existing Building Codes.
Electrical Permits
Longmont wrote its own National Electrical Code administration chapter by Ordinance No. O-2024-49 on July 23, 2024. Longmont Municipal Code § 16.08.160 requires a permit for most electrical work, exempts minor repairs, sets a 365-day permit expiration, and lets the city council set fees by resolution. The chief building official reviews plans, issues certificates of approval, and can revoke permits or issue stop-work orders under the same chapter.
Longmont Electrical Permit and NEC Rules
Some RestrictionsLongmont Municipal Code § 16.08.160
A.Permit required; applications.1.Applications for permits shall be made to the city on forms provided, shall include the applicant's answers in full to inquiries set forth on such forms, and shall be accompanied by such data as required by the city....3.Exceptions: No permit shall be required to execute any of the following classes of electrical work:a.Installation or replacement of equipment ...
Plumbing Permits
Longmont adopts the 2024 International Plumbing Code by reference under Longmont Municipal Code § 16.16.010, with the city's own amendments controlling wherever they conflict with the model text. Ordinance O-2026-27 rewrote the plumbing chapter on June 9, 2026, resetting permit fees, valuations, refunds, appeal routing and violation penalties alongside the newer code edition.
Longmont Plumbing Permit Code Rules
Some RestrictionsLongmont Municipal Code § 16.16.010
Pursuant to C.R.S. title 31, article 16, part 2, as amended, and article IV, part 4.9 of the Charter, there is adopted as the plumbing code of the city, by reference thereto, the International Plumbing Code, 2024 edition, including appendices B, C, D, E and F, published by the International Code Council, Inc., 4051 West Flossmoor Road, Country Club Hills, IL 60478, that code to have the same fo...
Building Inspections
Longmont requires anyone who installs electrical equipment under a non-annual permit to notify the chief building official once work is done; the official then inspects and, if the work conforms, issues a certificate of approval. Work that will be covered by building materials cannot be concealed until the chief building official has approved it first.
Longmont Electrical Installation Inspection Rules
Some RestrictionsLongmont Municipal Code § 16.08.170
A. Upon the completion of any installation of electrical equipment that has been made under a permit other than an annual permit, it shall be the duty of the person, firm, or corporation making the installation to notify the chief building official having jurisdiction, who shall inspect the work within a reasonable time. B. Where the city finds the installation to be in conformity with all appl...
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