City Building Permits

Longmont (Boulder County portion), COLORADO Building Permit Guide

How to apply for a building permit in Longmont (Boulder County portion), Colorado. Permit authority, application steps, fees, and inspection requirements.

Colorado Boulder County Updated March 2026

Permit Authority

Applies within Longmont city limits, including the Boulder County portion of Longmont; projects outside city limits fall to the applicable county or municipality.

Department
City of Longmont Building Services
Address
Development Services Center, 385 Kimbark Street, Longmont, CO 80501
Phone
303-651-8332
Website
https://longmontcolorado.gov/building-inspection/

Online Permit Portal

Open Accela Citizen Access / Citizen Portal

Platform: Accela Citizen Access / Citizen Portal • Account required: Yes • Submission: In-person only

Application Process

  1. Review permit type, adopted codes, and contractor rules on Building Services pages.
  2. Create a Citizen Portal account and select the correct permit type.
  3. Submit the permit application and required plans and supporting documents.
  4. Address review comments and provide any required contractor or technical documents.
  5. Pay permit fees and any city use tax due.
  6. Keep approved plans and permit card on site and schedule inspections online or by phone until final approval.

Typical processing time: Not published as a single citywide permit chart. Inspection requests submitted before 4 p.m. are scheduled for the next business day.

Source: City of Longmont Building Services

General Requirements

Longmont requires permits for all commercial construction, new construction, additions and alterations, changes to electrical, gas, mechanical, or plumbing systems, and repairs involving structural members.

Required Documents

  • Application
  • Plan set
  • Trade-specific checklists
  • Permit-type instructions
  • Additional checklist items for electrical projects where applicable
Permit validity
Not clearly summarized on the public permit page reviewed.
Building code
2021 International Codes effective January 1, 2022, with 2023 NEC adopted July 24, 2024; city notes 2024 code adoption targeted by May 1, 2026.
Owner-builder
Homeowners may act as their own general contractor only if the property is their primary residence and is not a rental and not intended for resale or flipping.
Contractor requirements
Anyone performing contracting work in Longmont must hold a valid Longmont contractor license; licensed subcontractors are required for homeowner permits, and electrical contractors pull their own permits under state rules.

Fees

Plan check fee
Included in the city fee manual by permit type
Permit fee formula
Mixed; city fee manual includes construction permit fees, deferred fees, and use tax.
Reinspection fee
$200 per hour
Payment note
Permit fees and Longmont and Boulder County construction use tax may apply.

Fees change. Verify current amounts at the official fee schedule (effective 2025).

Work That Does NOT Require a Permit

Contact the City of Longmont Building Services to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

Scheduling deadline
Requests due before 4 p.m. for the next business day
Inspection hours
Homeowners may request morning 7 a.m. to 12 p.m. or afternoon 12 p.m. to 5 p.m.

Typical inspection sequence: Footing, foundation, rough framing and trades, insulation if needed, drywall nail if required, then final inspection

A $47 reinspection fee may apply if animals are loose or the site is not inspection-ready

Additional Resources

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the City of Longmont Building Services before applying.

Need help with your project?

Navigating permits in Longmont (Boulder County portion) can be complicated.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authority listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.

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