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LONGMONT SERVICES

Custom Modular Home in Longmont

Licensed custom modular home services for Longmont and Boulder County. Factory precision. Custom design. On-site assembly..

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  • Construction & Tenant Finish
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Custom Modular Home

Factory precision. Custom design. On-site assembly.

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Local Service

Custom Modular Home Services in Longmont, Colorado

Autotelic provides professional custom modular home services throughout Longmont and the surrounding Boulder County area. Licensed modular home installation across the Denver metro — factory-precision construction with on-site assembly, Tesla Solar Roof, and smart home automation. Whether you're in Longmont (north Boulder County) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.

Permit Thresholds

Longmont permit thresholds

Code reference
The City of Longmont has adopted the 2024 International Codes, including the International Residential Code, effective July 1, 2026.
Code reference
Retaining walls over 48 inches.
Code reference
Accessory buildings over 120 square feet.
Code reference
Accessory buildings 120 square feet or less in floor area, though it is recommended to secure them against wind damage, and they must still meet setback requirements.
Code reference
Fencing below certain heights (commonly 6 feet).
Foundations
For one-story accessory structures greater than 120 square feet, foundations must be designed by a Colorado-licensed engineer, and the drawings must be stamped and sealed by that engineer.
Code reference
The City of Longmont enforces the 2024 International Codes, which became effective on July 1, 2026, along with the Metro Cohort Model Code.
Code reference
The Longmont Municipal Code incorporates by reference the International Residential Code for One and Two-Family Dwellings, 2021 Edition, including various appendix chapters.

Codes are amended regularly — verify current requirements with **The City of Longmont Building Services (Building Inspection division) issues residential building permits.

Energy Code

Longmont energy code quick facts

Code reference
2024 IECC (Metro Cohort Model Code based on the 2024 International Energy Conservation Code, with local/regional amendments), effective July 1, 2026.
Code reference
Longmont adopted the 2024 International Codes (including the energy code) along with the Metro Cohort Model Code (MCMC, based on the 2024 IECC with regionally aligned amendments) via Ordinance O-2026-29 (adopted ~June 9, 2026; see Municode Chapter 16.22 for the energy conservation code adoption).Ordinance O-2026-29
Code reference
This aligns with Colorado state requirements for jurisdictions updating codes around this period (must meet or exceed 2021 IECC + electric/solar-ready provisions, with amendments not reducing stringency).
Code reference
Longmont follows its policy of adopting each new IECC version; it is not the Denver Green Code or Energize Denver program.
Code reference
Longmont is in IECC Climate Zone 5B.
Key prescriptive requirements (from the adopted 2024 IECC/MCMC base provisions,
Key prescriptive requirements (from the adopted 2024 IECC/MCMC base provisions, applicable to additions and alterations per the IECC scope for new construction elements in remodels/additions) relevant to remodels/additions in CZ 5B include (specific MCMC amendments may modify details; always verify
Ceiling/attic insulation
R-49 (or equivalent U-factor per Table R402.1.2/R402.1.3).
Adopting ordinance/reference
MCMC/2024 IECC Table R402.1.2 (or R402.1.3 component performance alternative) as adopted in Longmont Municipal Code Chapter 16.22.
Ordinance O-2026-29Source: longmontcolorado.gov

Codes are amended regularly — verify current requirements with **The City of Longmont Building Services (Building Inspection division) issues residential building permits.

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What this covers

Factory-built modules set on a Denver-area foundation with site-built connections. Transport, crane, and weather window are part of the plan; finish and utility tie-in happen on site.

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How the work is coordinated

Permits cover both the factory package and the site work through the local building department. Denver-metro work is permitted locally. Colorado has no statewide general-contractor license. Cities and counties license general contractors. DORA licenses electrical and plumbing (and similar regulated trades), not general contractors. Autotelic is a municipally licensed Denver general contractor that coordinates licensed specialty trades. Denver building permits run through Community Planning and Development (CPD). Costs are project-specific; no dollar figures.

FAQ

Common questions

Who handles the custom modular home permits and licensing?

A municipally licensed Denver general contractor coordinates licensed specialty trades. Colorado has no statewide general-contractor license; cities and counties license general contractors. DORA licenses electrical and plumbing, not general contractors.

What is typically in scope for custom modular home in Denver?

Factory-built modules set on a Denver-area foundation with site-built connections.

When do you need drawings or a permit?

Anything that changes structure, occupancy, or regulated electrical or plumbing usually needs a local permit. Denver building permits are reviewed by Community Planning and Development. Confirm the exact trigger with CPD for the address.

Service Area

Serving Longmont and Boulder County

We serve Longmont, CO and all surrounding Denver metro communities. Our team is based in Denver and operates throughout the Front Range, from Castle Rock to Longmont and everywhere in between. Contact us for a free estimate on your Longmont project.

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TRUSTED TO BUILD FOR

  • Punch Bowl SocialFirst four locations
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  • Denver HighlandsFirst modular custom home

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