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Manufacturers - Modulars

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Salesforce Login Information

Current registered Manufacturers, Sellers, Installers, or Inspectors of factory built structures can access Salesforce using the below link. New applicants should visit the appropriate page for their account type, follow the provided instructions, and submit a registration application. Upon successful entry into the system, login information will be sent to you.

Salesforce Link

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The Division of Housing must conduct a full design and plan review and inspection of the construction of factory-built structures to the extent the design and construction relates to work performed offsite or work that is completed onsite using components shipped with the factory-built structure as reflected in the approved plans for the factory-built structure. A local government local governments cannot review or approve the construction of a factory-built structure if the Housing Division is already doing so. Additionally, local governments cannot charge building permit fees to cover the costs of the Division's reviews or inspections.

A local government's jurisdiction is limited to work done onsite in compliance with section 24-32-3311(6), C.R.S., and includes associated plan review, permits, inspections, and fees.

The Division of Housing may authorize a local government to inspect and approve work that is completed onsite using components shipped with the factory-built structure as reflected in the approved plans for the factory-built structure. If authorized, a local government may charge inspection fees to assist the Division of Housing to inspect and approve work that is completed onsite using components shipped with the factory-built structure as reflected in the approved plans for the factory-built structure. 

The Division of Housing does account for and apply a local government's standards concerning unique public safety requirements related to geographic or climatic conditions, such as weight restrictions for roof snow loads, wind shear factors, fire suppression systems, and wildfire mitigation. 

Registration

Construction Requirements

A Modular (FB/FBNR) built unit has to comply with the following requirements at a minimum in Rule 2 of the Administrative Rules 8 CCR 1302-14:

  • Roof Snow Load: 30 psf, non-reducible
    The roof snow load, wind design, and seismic zone shall be in accordance with the local jurisdiction requirements and shall not be less than the minimums stated. The allowable increase for snow duration shall not be used when the snow load is above 65 PSF.
  • Basic Wind Speed: 115 (Vult), Exposure C
    The roof snow load, wind design, and seismic zone shall be in accordance with the local jurisdiction requirements and shall not be less than the minimums stated. The allowable increase for snow duration shall not be used when the snow load is above 65 PSF.
  • Wind Topographic Effect: Per Local
  • Seismic Design Category: Minimum B
    The roof snow load, wind design, and seismic zone shall be in accordance with the local jurisdiction requirements and shall not be less than the minimums stated. The allowable increase for snow duration shall not be used when the snow load is above 65 PSF.
  • Weathering: Severe
  • Frost Line Depth: Per Local
    In areas of the state without a local jurisdiction, the Division of Housing will approve all temporary or permanent foundation systems as defined in Rule 2.
  • Termite Damage: Slight
  • Winter Design Temperature: Per Local
    See Appendix B of the Administrative Rules and verify with local jurisdiction. 
  • Ice Barrier: Yes
  • Flood Hazards: Per Local
  • Air Freezing Index: Per Local
    See the National Climatic Data Center data table “Air Freezing Index-USA Method (Base 32o Fahrenheit).”
  • Mean Annual Temperature: Per Local
    See the National Climatic Data Center data table “Air Freezing Index-USA Method (Base 32o Fahrenheit).”
  • Wildfire Risk: Per Local
  • Fire Suppression: Per Local

Currently Adopted Codes are as follows, with amendments within Rule 2 of the Administrative Rules 8 CCR 1032-14 :

  • 2018 IBC
  • 2018 IRC
  • 2018 IPC
  • 2018 IMC
  • 2018 IFGC
  • 2023 NEC - The Division of Housing will update to the newest version of the NEC when the State Electrical Board adopts a newer version of the code.
  • 2015 IECC

On-site Construction

On-site Construction (OC), as defined by the DOH, are items that have to be completed on site, to complete the compliance of the structure. These items can vary, but do not relate to the installation of the structure, nor the items built on site for attached or detached structures. Typical site-built items that are permitted by the locals include, but not limited to, garages, patios, patio covers, decks, external stairs, and carports.

Items that relate to OC include, but not limited to, the completion of insulation at the crawlspace or basement for thermal envelope, under floor plumbing and gas to complete the plumbing system to utility connection, mechanical and plumbing vents above the hinge of a hinged roof system, drywall on the exterior of home where an onsite attached garage will be built, dormers, and exterior fixtures.

These OC items are required to be placed on our OC form, by the manufacturer, for review and approval by the DOH. This form is then submitted to the local for the review to either accept the responsibility of the inspection of these items, to the DOH approved plans, or deferred back to the manufacturer, who then can decide if a DOH third party agency will be contracted to do the inspection or the DOH.

Please review the On-site Construction Inspection Form for further information.

Plan Submission

Inspection Scheduling

To schedule inspections for in-plant and on-site inspection for modular structures, please contact the FB/FBNR Coordinator at dola_manufacturedbuildings@state.co.us

Reference Guides

Third Party Inspection Agencies

If you are a third-party agency seeking approval to conduct a variety of inspections and reviews on the behalf of the Division of Housing, please review the Administrative Rules 8 CCR 1302-14, Rules 4.30 through 4.33. Submit required information in rule to the FB/FBNR Program Coordinator at dola_manufacturedbuildings@state.co.us.

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