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Ordinances Affecting Property in Longmont, Code Enforcement

The following items are a brief description of Residential Ordinances.
For more detailed descriptions please select a link to the specific pages listed to the left.

Overweight commercial vehicles are not allowed in residential zones except for the purposes of delivery or loading and unloading of goods.

It is unlawful for any person, firm or corporation to erect, construct, enlarge, alter, repair, move, improve, convert or demolish any building, sign or accessory structure without first obtaining a building permit. No permit is needed for painting or installing floor coverings. Two (2) sets of construction plans and/or plot plans of sufficient detail are required to evaluate if the proposal complies with all applicable codes and regulations. Please contact the Building Inspection Division at 651-8332 for more details.

All fences require a fence permit, available through the Building Inspection Division office. No fence can be equipped in such a manner that it can be charged with electricity. Barbed wire is not allowed in residential zones. A fence cannot be constructed of tin or sheet metal.

A garage sale is defined as the occasional, non-business, public sale of secondhand household and other goods incidental to household uses by a person or persons from a location zoned residential. Garage sales may not be conducted for more than three (3) consecutive days, nor for more than a total of twelve (12) days within any calendar year. Signs advertising garage sales may not be posted in any public right of way, including attachment to public structures such as light poles, traffic lights, street signs or utility boxes.


The City of Longmont has an ordinance in place to deal with unsightly graffiti in the community. It is important to remove graffiti as soon as possible, because if left in place, graffiti adds to the deterioration of neighborhoods, and may invite a response from rival gangs or taggers. All citizens can report graffiti by calling the "GEAR" (Graffiti Eradication Abatement Response) Hotline at 303-774-GEAR (4327).

A home occupation is a business, profession, occupation or trade conducted for any business or commercial purpose, located entirely within a principal residential structure, and is accessory, incidental and secondary to the use of the structure for dwelling purposes and does not change the essential residential impact, character or appearance of the dwelling.

All home occupations must meet all of the following criteria:

Home occupations shall be conducted entirely within the principal structure or an accessory structure associated with the residential use, and shall be carried on by the inhabitants thereof and no other. A person who does not so reside within the dwelling cannot be employed in the home occupation. A home occupation shall not render unusable off-street parking required for the dwelling per City Code.

Home occupations shall be clearly incidental and secondary to the use of the dwelling for dwelling purposes and shall not change the character thereof.

The total area used for a home occupation shall not exceed an area representing one-half the first floor area of the user’s dwelling unit.

There shall be no advertising or other display or indications of a home occupation with the exception of signs permitted per the Sign Code, 15.06 (2 sq. ft. wall sign).

There shall be no substantial retailing or wholesaling of stocks, supplies or products conducted on the premises of a home occupation; however, delivery of retail products to the consumer off the premises, such as in the course of a mail order business, shall be permitted.

There shall be no exterior storage on the premises of supplies or material used in the home occupation, nor of any chemically hazardous, explosive or combustible material within the dwelling or upon the exterior of the property.

A home occupation shall provide additional off-street parking area adequate to accommodate all needs created by the home occupation, without changing the residential character of the premises.

A home occupation shall not generate or result in nuisances such as traffic, on-street parking, noise, vibration, odor, glare, fumes, electrical interference or hazards greater than that usually associated with residential uses.

It is unlawful for any person who is the owner of any vehicle or any person who is in charge or control of any property within the city, to permit or allow any partially wrecked, junked or discarded vehicles or parts to remain on a property longer than ten (10) days. An unregistered vehicle is considered a junk vehicle. This ordinance does not apply to a vehicle in an enclosed building, or one that is properly covered.

Real estate for sale signs and political campaign signs must be located one foot inside the front property line. These signs must not:

It is unlawful for any person to abandon or discard in any public or private place accessible to children any chest, closet, piece of furniture, refrigerator, freezer, icebox or other article or device having a compartment of one and one-half cubic feet or more capacity, having a mechanical or magnetic lock or feature designed to keep the door in a closed position, or any article or device which is substantially airtight with the door closed.

Every owner or occupant of any premises must clean the snow and ice off the adjacent sidewalks no later than twenty-four (24) hours after any snowfall.

It shall be deemed a public nuisance and unlawful for any owner or occupant to permit the accumulation, abandonment or storage of trash, debris or junk on private or public property within the city. "Debris" is all waste, refuse and rejected matter and material, whether animal, vegetable or mineral, manufactured or natural. "Junk" includes, however is not limited to, scrap building materials, lumber or metals, discarded furniture, fixtures, appliances, motor vehicle parts and tires, inoperable, abandoned, demolished, dismantled machinery, trailers, and other goods in such condition of deterioration or disrepair so as to be unusable in their existing condition.

Every owner or occupant of any property within the city shall remove all weeds, brush and rubbish of all kinds from the premises and from the alleys behind and the sidewalk areas in front thereof.

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(last revised 11/13/07)