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KEN CARYL SERVICES
ADU / Backyard Cottage in Ken Caryl
Licensed ADU / backyard cottage services for Ken Caryl and Jefferson County. Build an income-producing unit in your backyard.
What Ken Caryl requires
Primary Structure: 35 feet (Jefferson County Zoning Resolution, Section 30, Lot and Building Standards Table) §30
See full local requirements ↓- Full Design Lifecycle
- Construction & Tenant Finish
- Smart Home · A/V · Edge Compute
Build an income-producing unit in your backyard
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Local Service
ADU / Backyard Cottage Services in Ken Caryl, Colorado
Autotelic provides professional ADU / backyard cottage services throughout Ken Caryl and the surrounding Jefferson County area. Accessory dwelling unit construction across the Denver metro — detached new builds, garage conversions, and basement conversions compliant with Colorado HB 24-1152. One veteran-owned design-build team runs the full Denver sequence under a single contract: zoning verification and concept design, municipal zoning and building permit reviews, then construction and inspections through certificate of occupancy. Whether you're in Ken Caryl (southwest Jefferson County) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.
Permit Thresholds
Ken Caryl permit thresholds
- Code reference
- Jefferson County adopted the 2024 International Codes and Supplements, which became effective on July 1, 2026.
- Code reference
- A building permit is typically required for residential remodel work in Jefferson County under the adopted building codes, which include the 2024 International Residential Code (IRC) and its supplements.
- Code reference
- Additions over 400 square feet may trigger additional reviews for access, water, wastewater, and fire district service.
- Code reference
- Decks that are over 12 inches off the ground require a permit.
- Garages and Barns
- Permits are required for garages, home additions, and barns over 200 square feet.
- Sheds and Mini-Structures
- Sheds, shipping containers, and mini-structures 120 square feet or less require a Miscellaneous Permit.
- Code reference
- However, if a structure (regardless of size) is within 10 feet of an occupied structure, it requires a Building Permit.
- Code reference
- A Building Permit is also required for all structures over 120 square feet or over 14 feet tall.
Codes are amended regularly — verify current requirements with **Jefferson County (specifically its Building Division/Planning & Zoning functions) issues residential building permits for Ken Caryl, CO (an unincorporated community/CDP in Jefferson County).
Zoning & ADU
Ken Caryl zoning & ADU quick facts
- Code reference
- The most common single-family residential districts include Residential-One (R-1), Restricted Residential (RR), Mountain Residential (MR), and Suburban Residential (SR) districts.
- Code reference
- Specific maximum lot coverage percentages for the R-1, RR, MR, and SR districts are not explicitly detailed in the provided summaries of the Jefferson County Zoning Resolution.
- Code reference
- An older version of the Jefferson County Zoning Ordinance (1969) indicated a maximum lot coverage of 25% for the "Residential One District" for the main building and all accessory buildings.
- Code reference
- However, the Zoning Resolution has undergone significant revisions, including major updates in 2013 and 2026.
- Primary Structure
- 35 feet (Jefferson County Zoning Resolution, Section 30, Lot and Building Standards Table)§30
- Accessory Structure
- Not to exceed the lesser of the height of the primary structure or 25 feet.
- Code reference
- (Jefferson County Zoning Resolution, Section 30, Lot and Building Standards Table, Footnote 1)§30
- Primary Structure
- 45 feet (Jefferson County Zoning Resolution, Section 31, Lot and Building Standards Table)§31
Codes are amended regularly — verify current requirements with **Jefferson County (specifically its Building Division/Planning & Zoning functions) issues residential building permits for Ken Caryl, CO (an unincorporated community/CDP in Jefferson County).
A recent build
Backyard ADU in Denver
Denver · 2026
- Status
- Under construction — 2026
- Managed on
- Buildbot — Autotelic’s own PM platform
- Architecture, site plans, and full MEP design completed in-house
- Permits pulled — electric and plumbing rough-ins permitted and underway
- Spray-foam insulation and exterior work in progress
- First project managed end-to-end on Buildbot, Autotelic’s construction-PM platform
A ground-up backyard ADU in Denver — designed, permitted, and now under construction by Autotelic, and the first project managed end-to-end on Buildbot, Autotelic’s own construction-management platform.
The build sequence for a ADU / Backyard Cottage project
This service is a component of How a ADU project works in Ken Caryl.
Energy Code
Ken Caryl energy code quick facts
- Code reference
- Jefferson County has adopted the 2024 International Energy Conservation Code (IECC), along with the 2024 State Model Electric Ready and Solar Ready Code, effective July 1, 2024.
- Code reference
- Previously, the 2018 IECC was in effect until June 30, 2024.
- Code reference
- Unincorporated Jefferson County is designated as Climate Zone 5 for energy code purposes.
- Code reference
- For residential remodels and additions, compliance can be achieved through a prescriptive path, simulated building performance, or the Energy Rating Index (ERI) option, as outlined in the 2024 IECC.
- Code reference
- The prescriptive path for the building envelope requires information to be taken from various tables using Zone 5 requirements from the 2024 IECC.
- Code reference
- While Jefferson County's documentation refers generally to these requirements, specific numerical values for the 2024 IECC would typically be found directly within the code document's Chapter 4 (Residential Energy Efficiency) or Chapter 5 (Existing Buildings).
- Code reference
- Based on the general prescriptive requirements for Climate Zone 5 in the 2024 IECC (which Jefferson County has adopted):
- Ceiling Insulation (Attic)
- R-49 insulation for ceilings with attics.
Codes are amended regularly — verify current requirements with **Jefferson County (specifically its Building Division/Planning & Zoning functions) issues residential building permits for Ken Caryl, CO (an unincorporated community/CDP in Jefferson County).
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What this covers
Detached or attached accessory dwelling on a Denver lot: foundation or module, envelope, and utility tie-in. Height and massing follow Denver bulk-plane and ADU rules for the zone; confirm with CPD before drawings freeze.
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How the work is coordinated
A municipally licensed Denver general contractor coordinates licensed specialty trades for electrical and plumbing. 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.
Service Area
Serving Ken Caryl and Jefferson County
We serve Ken Caryl, 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 Ken Caryl project.
FAQ
Common questions
Is an ADU allowed on my lot?
It depends on your city’s zoning — lot size, setbacks, and parking rules vary across the metro. We run the zoning check as the first step and tell you what your lot supports before you spend money on design.
Do you handle ADU permits and inspections?
Yes — ADU permitting is municipal, and we manage zoning review, permit application, and every inspection through certificate of occupancy.
Detached, attached, or garage conversion — which is right?
Each has different zoning, cost, and site implications. We design all three and recommend based on your lot, budget, and how you plan to use the unit.
What does an ADU cost?
Getting a real answer costs less than most people expect: an ADU feasibility consultation is $350, and the full ADU feasibility package — zoning check, site analysis, and concept direction — is $950, both listed at fixed prices on our booking page. Construction cost depends on the path: garage and basement conversions reuse existing structure, while a detached backyard cottage is new construction from the foundation up. After feasibility we quote the build itself as a fixed-price proposal, so you know the number before work starts.
How long does an ADU project take?
Three phases run in sequence: design (site measure, concept, construction documents), permitting (zoning and building review, which move on the municipality’s calendar), then construction. Conversions generally move faster than detached new builds because the shell and foundation already exist. We lay out the phase-by-phase schedule in your proposal, and you track progress on our operations platform once work starts.
How small a lot can support an ADU?
Smaller than most people assume — many Front Range single-unit lots that owners write off can carry a detached unit, and each city sets its own minimum lot size, setbacks, and building coverage. Whether your district’s standards leave room for a backyard cottage — or point you toward a garage or basement conversion instead — is exactly what the feasibility check answers for your address.
What is the ADU permit process?
Two municipal reviews run in order: a zoning review confirming the unit fits your district’s standards, then a building permit review of the construction documents, with inspections during the build and a certificate of occupancy at the end. Colorado HB 24-1152 now requires most Front Range municipalities to allow ADUs on single-unit lots, and we confirm how your city implements it as the first step of feasibility.
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 →Let's design your perfect ADU / Backyard Cottage together
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How This Works (2 minutes)
- 1Tell us about your project (30 seconds)
- 2Answer a few quick questions for an accurate estimate (60 seconds)
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