Permits - City of Longmont Skip to main content

Work That Requires a Building Permit

The issuance of permits and subsequent inspections of that work ensures that all construction in the City is safe and in compliance with the City of Longmont Zoning and Building Codes. The primary purpose of these codes is to ensure safe and healthy environment for the citizens of Longmont.

A building permit is required for:

  • All commercial construction
  • New construction
  • Any addition or alteration in, or to, an existing building or structure
  • Any changes to the electrical, gas, mechanical, or plumbing systems
  • Any repairs involving structural members

 

Examples of Work Requiring a Permit

New Buildings

  • Dwellings
  • Garages
  • Carports
  • All Commercial Construction

 

Additions

  • Patios, sunrooms, decks, and pergolas
  • Swimming Pools and hot tubs
  • Accessory buildings over 120 square feet 

(Accessory buildings 120 square feet or less must still meet setback requirements)

 

Alterations and Remodels

  • Re-roofing
  • Drywall installation or removal
  • Insulation
  • Window replacement
  • Garage or sunroom conversions to living space
  • Basement finish
  • Siding
  • Retaining walls over 48 inches
  • Fences
  • Interior Remodels

 

Appliances and Mechanical Systems

  • Fireplace or gas log installation

  • Air conditioners and evaporative (swamp) coolers

  • Water heaters

 

Electrical Work

  • Relocating electrical receptacles

  • Electrical service upgrades

  • Panel replacement or adding a sub-panel

  • Converting overhead service to underground

  • Relocating electrical meters

 

Electrical Permit Requirements

Certain electrical projects require additional information on the permit application, including:

  • Service conversions

  • Meter relocations

  • Electrical disconnects and reconnects

View the Electrical Permit Checklist

 

 

Unpermitted Work

If you do work or have any work done without obtaining the proper permit, you may incur liability in the event of a fire or accident related to that work. In some circumstances, your insurance may be invalidated.

 

If you sell your home, potential buyers can check the permit history of your property and demand that unpermitted work be rectified. This is a complex and potentially expensive process.

 

 

Not Sure If You Need a Permit?

If you have questions about whether a permit is required, contact Building Services:

Development Services Center
385 Kimbark Street, Longmont, CO
(303) 651-8332

building.inspection@longmontcolorado.gov