DESIGN · BUILD · AUTOMATE
CASTLE ROCK SERVICES
Custom Modular Home in Castle Rock
Site Analysis Package, $650
See all 2 jobsLicensed custom modular home services for Castle Rock and Douglas County. Factory precision. Custom design. On-site assembly..
What Castle Rock requires
Code reference: Exempt work follows the Town’s adopted amendments to the 2024 International Residential Code (IRC) and International Building Code (IBC), per Ordinance No. 2026-017 (effective around June 30, 2026). Ord. No. 2026-017
See full local requirements ↓- Full Design Lifecycle
- Construction & Tenant Finish
- Smart Home · A/V · Edge Compute
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.
EVERY PROJECT STARTS WITH DESIGN
Local Service
Custom Modular Home Services in Castle Rock, Colorado
Autotelic provides professional custom modular home services throughout Castle Rock and the surrounding Douglas 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 Castle Rock (Douglas County seat) 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.
The build sequence for a Custom Modular Home project
This service is a component of How a New build project works in Castle Rock.
Permit Thresholds
Castle Rock permit thresholds
- Code reference
- Exempt work follows the Town’s adopted amendments to the 2024 International Residential Code (IRC) and International Building Code (IBC), per Ordinance No. 2026-017 (effective around June 30, 2026).Ord. No. 2026-017
- Code reference
- One-story detached accessory non-habitable structures (tool sheds, playhouses, etc.) ≤ 120 sq ft, ≥ 10 ft from the nearest occupiable structure.
- Code reference
- Fences ≤ 6 ft high (swimming pool barriers of any height are *not* exempt).
- Code reference
- Shingle repair or replacement not exceeding one square (100 sq ft) of covering per building.
- Code reference
- The adopted codes (2024 IRC/IBC and related) govern when alterations trigger permitting.
- Code reference
- See Title 15 of the Castle Rock Municipal Code (and amendments in Ordinance 2026-017) for the full adopted code language on work exempt from permit (primarily amending IRC R105.2 and equivalent IBC sections).Ord. 2026-017
- Building use tax
- 5.2% applied to 50% of the project’s valuation (materials estimated at half the valuation).
- Code reference
- This comprises the Town’s 4.2% use tax rate + Douglas County’s 1% use tax rate.
Codes are amended regularly — verify current requirements with **The Town of Castle Rock Building Division (part of Development Services) issues residential building permits within the town limits.
Energy Code
Castle Rock energy code quick facts
- Code reference
- 2021 International Energy Conservation Code (IECC), with local amendments, as adopted by Ordinance No. 2026-017 (adopted June 2, 2026; effective June 30, 2026), along with the Colorado Model Electric-Ready and Solar-Ready Code.Ord. No. 2026-017
- Code reference
- This applies to Castle Rock (Douglas County, Climate Zone 5B).
- Code reference
- The adoption aligns with state requirements for jurisdictions updating other building codes by the June 30, 2026 deadline.
- Code reference
- Specific local numeric amendments to prescriptive requirements (e.g., R-values, U-factors, or air-sealing thresholds for remodels/additions) are not detailed in publicly available sources beyond references to the base 2021 IECC tables/sections (such as Table R402.1.2 for insulation/fenestration and
- Code reference
- The adopting ordinance incorporates the 2021 IECC by reference with amendments thereto but does not appear to alter the core prescriptive values in available excerpts.
Codes are amended regularly — verify current requirements with **The Town of Castle Rock Building Division (part of Development Services) issues residential building permits within the town limits.
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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 Castle Rock?
$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 Castle Rock and Douglas County
We serve Castle Rock, 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 Castle Rock project.
How It Runs
01
Survey
02
Design
03
Build
04
Verify
DESIGN SERVICES
Discovery & Site Analysis
Needs + preference programming, site survey, as-built documentation, feasibility.
We walk, measure, and photograph your property — existing conditions, utilities, structure, and constraints. You get the as-built documentation and feasibility read that every later decision rests on.
Learn more →Concept Design & Space Planning
Schematic design, floor plan studies, layout options.
Your scope becomes schematic floor plans you can compare side by side — circulation, daylight, adjacencies, and what each option does to the budget. Layout decisions happen on paper, where changes are cheap.
Learn more →Architectural Design & 3D Renderings
Design development, materials + finishes, photorealistic visualization.
The chosen concept resolves into materials, finishes, fixtures, and lighting — with the automation layer drawn in. Photorealistic renderings let you walk the space and adjust before anything is priced.
Learn more →Construction Documents & Permitting
Full CD sets, structural + MEP engineering coordination, permit-ready drawings.
Approved designs become coordinated architectural, structural, and MEP sheets — the set your jurisdiction permits from and trades build from. We submit, track, and answer review comments.
Learn more →CONSTRUCTION
New Construction & Custom Homes
Ground-up homes and light commercial, dirt to keys.
Ground-up residential and light commercial builds — foundations through finishes, including modular and steel construction. One accountable builder from dirt to keys.
Learn more →Remodels & Additions
Kitchens, baths, basements, pop-tops, whole-home.
Kitchens, baths, basements, pop-tops, and whole-home renovations that respect the house you already have. We handle structure, permits, and the dust.
Learn more →Commercial Tenant Finish & Build-Outs
Shells to working spaces — retail, office, restaurant, school.
Raw shells become working spaces — showrooms, offices, restaurants, schools. Dealer-spec finishes, code compliance, and opening dates held.
Learn more →ADUs & Modular Construction
Backyard cottages, garage conversions, factory-built homes.
Backyard cottages, garage conversions, and factory-built homes — zoning, design, permits, and set. Denver’s ADU rules are a specialty, not a surprise.
Learn more →Outdoor Living & Patio Structures
Decks, pergolas, and dining patios built for Colorado weather.
Decks, pergolas, and dining patios engineered for Colorado sun, snow, and hail — structure, shade, and drainage done right the first time.
Learn more →TECHNOLOGY
Smart Home Automation
Lighting, shades, climate, audio, security — one interface.
Whole-home control of lighting, shades, climate, audio, and security from a single interface — Crestron, Lutron, Savant, and Control4 designed in, not bolted on.
Learn more →A/V Systems
Theaters, distributed audio, video walls, commercial sound.
Theaters, distributed audio, video walls, and commercial sound — designed, installed, and tuned by the same team for over 20 years.
Learn more →Control Systems
Custom programming — scenes and schedules that fit the space.
Every subsystem brought into one elegant interface — custom programming for homes and venues, with scenes and schedules that match how the space is actually used.
Learn more →Networking & Edge Compute
Enterprise Wi-Fi, structured cabling, racks, on-prem compute.
Enterprise-grade Wi-Fi, structured cabling, racks, and on-premise compute — the backbone that makes everything else reliable, including our own Barbot platform.
Learn more →Solar & Energy Storage
Solar arrays, Tesla Powerwall, EV charging — certified install.
Solar arrays, Tesla Powerwall, and EV charging designed and installed by a Tesla Energy Certified team — roof, electrical, and app in one scope.
Learn more →Explore