Building Codes

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Adopted Codes
Previous Codes

Adopted Codes

National Green Building Standard (NGSB)

With the adoption of the 2009 International Codes, the City of Longmont also adopted the 2008 National Green Building Standard (NGBS). The NGBS is a new green building code that calculates compliance for all new residential dwelling units, including single family, multi-family or mixed use buildings, residential additions over 800 square feet in size and residential renovations (including basement finish projects) over 1800 square feet in size. The required number of points is explained in the NGBS Green Points Ordinance link below.

Click here for the link to the NGBS Home Page to help you calculate the required number of points for your project.

Longmont Green Points Ordinance

For those additions less than 800 square feet in size or renovations (including basement finish projects) less than 1800 square feet in size you will need to use the Longmont Green Points program to determine the necessary points for your project. A link to the Longmont Green Points Application and the Green Points Guide to help you determine how your project will comply with this ordinance, are listed below. For questions about green codes or other code questions please contact the City of Longmont Building Inspection Division at 303-651-8332.

Carbon Monoxide Safety Act

The City of Longmont has amended and adopted the 2009 Building Codes to include Title 38, Article 45 of the Colorado Revised Statutes, which requires Carbon Monoxide detectors to be installed in residential properties.

View additional information on the Carbon Monoxide detector requirements. (56KB)

Accessible and Usable Buildings and Facilities (ICC/ANSI A117.1), 2003 Edition - Adopted 02/15/05 - Effective Date 01/25/05
International Building Code, 2009 Edition - Adopted 12/22/09 - Effective Date 01/04/10, including Appendix Chapter I, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IBC can be obtained at International Building Code Adopted Amendments
National Electrical Code, 2008 Edition - Adopted 08/12/08 - Effective Date 08/25/08, including appendices, published by the National Fire Protection Association, that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the NEC can be obtained at National Electical Code Adopted Amendments (2008_nec.pdf, 672 KB)

International Residential Code, 2009 Edition - Adopted 12/22/09 - Effective Date 01/04/10, including Appendices H and K, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IRC can be obtained at International Residential Code Adopted Amendments

International Mechanical Code, 2009 Edition - Adopted 12/22/09 - Effective Date 01/04/10, including appendices, published by the published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IMC can be obtained at International Mechanical Code Adopted Amendments
International Fuel Gas Code, 2009 Edition - Adopted 12/22/09 - Effective Date 01/04/10, including Appendices Chapters A and B, published by the International Code Council, Inc., that Code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are added, amended, deleted, or replaced in this chapter.

Longmont's adopted amendments for the IFGC can be obtained at International Fuel Gas Code Adopted Amendments
International Plumbing Code, 2009 Edition - Adopted 12/22/09 - Effective Date 01/04/10, including Appendix Chapters B, E, F and G adopted, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IPC can be obtained at International Plumbing Code Adopted Amendments

International Property Maintenance Code, 2009 Edition - Adopted 12/22/07 - Effective Date 01/04/10, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IPMC can be obtained at International Property Maintenance Code Adopted Amendments

International Energy Conservation Code, 2009 Edition - Adopted 12/22/09 - Effective Date 01/04/10, including appendices, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions which are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the Energy Conservation Code can be obtained at International Energy Conservation Code Adopted Amendments

International Fire Code, 2009 Edition - Adopted 12/22/09 - Effective Date 01/04/10, including appendices except for Appendix A, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions which are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IFC can be obtained at International Fire Code Adopted Amendments

International Existing Building Code, 2009 Edition - Adopted 12/22/09 - Effective Date 01/04/10, including Resource Chapter A, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions which are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IEBC can be obtained at International Existing Building Code Adopted Amendments

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Previous Codes

Longmont's Build Green Ordinance became effective September 1, 2007

Longmont Green Building (green_ordinance.pdf, 40 KB)

International Building Code, 2006 Edition - Adopted 02/13/07 - Effective Date 02/23/07, including Appendix Chapter I, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IBC can be obtained at International Building Code Adopted Amendments (2006_ibc.pdf, 40 KB)
National Electrical Code, 2005 Edition, including appendices, published by the National Fire Protection Association, that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the NEC can be obtained at National Electical Code Adopted Amendments (2005_nec.pdf, 185 KB)

International Residential Code, 2006 Edition - Adopted 02/13/07 - Effective Date 02/23/07, including Appendices H and K, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IRC can be obtained at International Residential Code Adopted Amendments (2006_irc.pdf, 40 KB)

International Mechanical Code, 2006 Edition - Adopted 02/13/07 - Effective Date 02/23/07, including appendices, published by the published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IMC can be obtained at International Mechanical Code Adopted Amendments (2006_imc.pdf, 39 KB)
International Fuel Gas Code, 2006 Edition - Adopted 02/13/07 - Effective Date 02/23/07, including Appendices Chapters A and B, published by the International Code Council, Inc., that Code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are added, amended, deleted, or replaced in this chapter.

Longmont's adopted amendments for the IFGC can be obtained at International Fuel Gas Code Adopted Amendments (2006_ifgc, 39 KB)

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International Plumbing Code, 2006 Edition - Adopted 02/13/07 - Effective Date 02/23/07, including Appendix Chapters B, E, F and G adopted, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IPC can be obtained at International Plumbing Code Adopted Amendments (2006_ipc.pdf, 39 KB)
International Property Maintenance Code, 2006 Edition - Adopted 02/13/07 - Effective Date 02/23/07, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions as are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IPMC can be obtained at International Property Maintenance Adopted Amendments (2006_ipmc.pdf, 39 KB)
International Energy Conservation Code, 2006 Edition - Adopted 02/13/07 - Effective Date 02/23/07, including appendices, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions which are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the Energy Conservation Code can be obtained at International Energy Conservation Code Adopted Amendments (2006_iecc.pdf, 39 KB)
International Fire Code, 2006 Edition - Adopted 02/13/07 - Effective Date 02/23/07, including appendices except for Appendix A, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions which are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IFC can be obtained at International Fire Code Adopted Amendments (2006_ifc.pdf, 49 KB)
International Existing Building Code, 2006 Edition - Adopted 02/13/07 - Effective Date 02/23/07, including Resource Chapter A, published by the International Code Council, Inc., that code to have the same force and effect as if set forth in this chapter in every particular, save and except such portions which are deleted, modified, substituted or amended in this chapter.

Longmont's adopted amendments for the IEBC can be obtained at International Existing Building Code Adopted Amendments (2006_iebc.pdf, 39 KB)

Page last updated: 4/16/10