Important Notice: Utility Bill Pay Application Maintenance

A planned maintenance period is scheduled for the City of Longmont Utility Bill Pay application website on Saturday January 19th, 2019 from 9am to 1pm. This online application will be unavailable entirely or may experience intermittent periods of downtime during this time. Please save your work and avoid using the system during this time frame. We apologize for any inconvenience.




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New Commercial/Multifamily Construction

Permit application submittals can be in electronic or paper format.  Electronic documents shall be in PDF file type while hard copies require 4 sets of plans. 

NOTE:   Incomplete submittals cannot be accepted. Plan review fees are required at submittal time.



1.   Site/Plot Plan to scale

2.   Cover sheet with site area, impervious lot area, water meter size, sewer size, and electrical meter size

2.   General requirements for all sheets (4 sets are required if submitting hard copies):

a.   Owner of plans

b.   Plan name or address

c.   Date of plan (and revisions)

d.   Identify optional items

e.   Original stamp and signature of licensed design professional

3.   Architectural Plans

      a.    Code Analysis:

Indicate the occupancy group, sprinkled or non-sprinkled building, type of construction, number of stories, building height, actual floor area per occupancy, allowable area calculation, occupant load calculation, number of exits, exit access travel distance, maximum dead end corridor length, common path of travel, length of the maximum overall diagonal dimension of the building, total exit width, fire rated assemblies, and the required plumbing fixture calculations.

       b.   List of hazardous materials if applicable.

4.   Mechanical Plans

      a.    Engineering calculations, diagrams and other data

      b.    Indicate where penetrations will be made for mechanical systems, and the materials and

methods for maintaining required structural safety, fire-resistance rating, type of hood systems,  and fire blocking.

5.   Plumbing Plans

      a.   Engineering calculations, diagrams and other data

       b.   Indicate where penetrations will be made for pipes, fittings, components, and indicate the           

materials and methods for maintaining required structural safety, fire-resistance rating, traps or interceptors, and fire blocking.

6.   Electrical Plans

      a.   Engineering calculations, diagrams and other data

      b.   One line diagram

7.   Structural Plans

      a.   Statement of Special Inspections Required

      b.   Structural calculations

c.   Key Plan

d.   Table of Contents

e.   Foundation, Floor Framing, Roof Framing, Column, and Bearing Wall Calculations.

f.   Lateral Analysis as per Chapter 16 and applicable Appendixes

g.   Gravity Load System

8.  Energy Code Certification- Prescriptive or Performance path compliance

       a.   Interior lighting Compliance Certificate

       b.   Mechanical Compliance Certificate

  Download the generic program on web. Click and download the version of    COMcheck that matches your computer's operating system

Note: The first time you use COMcheck go to the Code Menu and select the 2015 IECC (1). Enter

Colorado in the state and Longmont in the box for City.

9.  Material Specifications

10. Truss Engineering where applicable



1.    Fire Sprinkler and Alarm Plans are to be submitted directly the City of Longmont Fire Support                 

Services, 385 Kimbark, Longmont, CO (303) 651-8437

2.   Health Department Approval (Boulder County Health (303) 441-1188)

3.   Kitchen Plans, which shall include hood details, hood suppression system details, shaft details,          

      equipment layout, seating plan, and grease trap calculation worksheet.

4.   Liquor Board Approval (City Clerks Office (303) 651-8648)

5.   Elevator plans, which shall include the equipment cut sheets.


APPLICABLE CODES (effective 07/2017)

1.   International Building Code, 2015 Edition

2.   National Electrical Code, 2017 Edition

3.   International Mechanical Code, 2015 Edition

4.   International Fuel Gas Code, 2015 Edition

5.   International Plumbing Code, 2015 Edition

6.   International Property Maintenance Code, 2015 Edition

7.   International Energy Conservation Code, 2015 Edition

8.   International Fire Code, 2015 Edition

10.  City of Longmont Amendments. For a copy visit our Building Codes page

11. ICC/ANSI A117.1-2009


  • More information may be requested to complete the plan review process.
  • Permits cannot be issued prior to approvals from Planning, Public Works, Fire Support Services, Building Inspection Division, Boulder County Health Department (if applicable), and any other City Departments with concerns.
  • Foundation only permits will be evaluated on a case-by-case basis.
  • Foundation only permits MAY be issued prior to full issuance if all Departments approve. The contractor is at their own risk if requesting a permit to construct a foundation only. A $500 fee, as well as all other permits fees, are due at the time the foundation only permit is issued.

The following checklist includes requirements and/or information needed at time of application submittal for Commercial Remodel/T.I./Additions projects.  This checklist needs to be completed and included as part of the submittal package:

Please review this checklist for documents needed when submitting for a Certificate of Occupancy:

Click below to download this information.


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