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DESIGN · BUILD · AUTOMATE

LONGMONT SERVICES

Custom Modular Home in Longmont

Site Analysis Package, $650

See all 2 jobs

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

What Longmont requires

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). Ord. O-2026-29

See full local requirements ↓
  • Full Design Lifecycle
  • Construction & Tenant Finish
  • Smart Home · A/V · Edge Compute
Custom Modular Home

Factory precision. Custom design. On-site assembly.

Jobs you can book online

Pick your job and choose a time.

Pay when you book. We confirm within 24 hours or refund you in full.

  • Pre-Purchase Land Feasibility Package

    Before you close on a lot, we document zoning, buildable area, utility availability, and likely development costs.

    $375 deposit to book, the rest when the work is done · morning (8–12) or afternoon (12–4)

    What's included

    Before you close on a lot, we document zoning, buildable area, utility availability, and likely development costs. You receive a written report you can use during due diligence.

  • Site Analysis Package

    Full site visit documenting zoning, setbacks, grade, utilities, and access, delivered as a written site analysis report with photos.

    $325 deposit to book, the rest when the work is done · morning (8–12) or afternoon (12–4)

    What's included

    Full site visit documenting zoning, setbacks, grade, utilities, and access, delivered as a written site analysis report with photos. Gives you the constraints on paper before you spend on design.

FREE PLANNING TOOLS

Both tools are free and take a couple of minutes — start in either one.

Local Service

Custom Modular Home Services in Longmont, Colorado

Autotelic provides professional custom modular home services throughout Longmont and the surrounding Boulder County area. 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, licensed and insured.

A recent build

Modular new build in Sunnyside

Sunnyside, Denver · 2026

Size
5 bed · 4 bath · 4,000 sq ft
Method
Factory-built modules, crane-set
Neighborhood
Sunnyside, Denver
  • Modular design-build
  • Site work & foundation
  • Crane set & stitch-out
  • Interior finish-out

A 5-bed, 4-bath, 4,000 sq ft modular home in Denver’s Sunnyside neighborhood — factory-built modules set by crane, finished on site.

Side elevation — brick screen tower under a wood soffit, with a dark metal upper story
Kitchen — light wood cabinets, marble counters, brass stools, and a globe chandelier
Living room — white sofa and a wire coffee table looking through to the kitchen
Entry niche — wood bench with a basket, hat, and boots under a hanging bag

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).Ord. 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.
Code reference
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.

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.

FAQ

Common questions

How much does Site Analysis Package cost in Longmont?

$650.

How do I book?

Press Book next to the job, pick a date and a morning (8–12) or afternoon (12–4) window, and pay the $325 deposit. We confirm within 24 hours or refund you in full.

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.

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.

How It Runs

01

Survey

02

Design

03

Build

04

Verify

DESIGN SERVICES

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