DESIGN · BUILD · AUTOMATE
GOLDEN SERVICES
Golden ADU / backyard cottage — local feasibility & estimate
ADU Feasibility Consultation, $350
Compare both studiesExploring a backyard ADU in Golden? Autotelic helps assess feasibility against lot, setbacks, HOA, and local rules—then provides a clear estimate and build path with one team. No fake zoning envelopes. No invented prices or license claims.
What Golden requires
ADUs are permitted in the following residential zone districts in conjunction wi: R-E, R-1, R-1A, R-2, and R-3 (Municipal Code § 18.28.240; city ADU page). § 18.28.240
See full local requirements ↓- Full Design Lifecycle
- Construction & Tenant Finish
- Smart Home · A/V · Edge Compute
Build an income-producing unit in your backyard
Book an ADU feasibility study
Two fixed-price studies, booked online before you pay for design: a site visit with a go/no-go read on your lot, or a written report you can take to a lender.
Pay when you book. We confirm within 24 hours or refund you in full.
ADU Feasibility Consultation
An on-site review of your lot against local ADU zoning, setbacks, and utility access.
Pay when you book · morning (8–12) or afternoon (12–4)
What's included
An on-site review of your lot against local ADU zoning, setbacks, and utility access. You get a verbal go/no-go read plus a one-page summary of constraints and next steps.
ADU Feasibility Package
Site visit plus a written feasibility report: local ADU zoning check, buildable envelope sketch, utility routing notes, and a preliminary budget.
$475 deposit to book, the rest when the work is done · morning (8–12) or afternoon (12–4)
What's included
Site visit plus a written feasibility report: local ADU zoning check, buildable envelope sketch, utility routing notes, and a preliminary budget. A documented go/no-go you can take to a lender.
FREE PLANNING TOOLS
Both tools are free and take a couple of minutes — start in either one.
EVERY PROJECT STARTS WITH DESIGN
Local Service
ADU / Backyard Cottage Services in Golden, Colorado
Autotelic provides professional ADU / backyard cottage services throughout Golden 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 Golden (gateway to the mountains) or nearby communities, our team delivers quality workmanship, licensed and insured.
Permit Thresholds
Golden permit thresholds
- Code reference
- Building Permit Fees table (effective 05/01/11, as modified by resolutions).
- Exterior
- One-story detached accessory structures ≤200 sq ft (residential only); fences ≤7 ft tall (unless front yard, corner lot, or historic district); landscaping; minor roof or siding repairs/replacement (10% or less of total area); minor maintenance/repairs; painting; retaining/landscape walls ≤4 ft tall
- Code reference
- Retaining/landscape walls over 4 ft (or supporting surcharge) also trigger requirements, often needing engineering.
- For homeowners doing their own work
- materials cost × 2.
- Building permit fees are calculated from a tiered table based on total valuation
- $1–$500 = $25.85; higher tiers add per-$100 or per-$1,000 increments up to $1M+).
- Additional plan review fee (when applicable)
- 65% of the permit fee.
- Building use tax
- 3% use tax on building materials, stated as 1.5% of total valuation.
Codes are amended regularly — verify current requirements with **The City of Golden (specifically its Building Division/Building Department) issues residential building permits for properties within Golden city limits.
Zoning & ADU
Golden zoning & ADU quick facts
- ADUs are permitted in the following residential zone districts in conjunction wi
- R-E, R-1, R-1A, R-2, and R-3 (Municipal Code § 18.28.240; city ADU page).§ 18.28.240
- Code reference
- Lot coverage of all accessory structures must not exceed 10% of the lot area (§ 18.28.240).§ 18.28.240
- Code reference
- Specific numeric standards for max lot coverage %, max building height, ADU max size, and setbacks for the listed districts (or any form types within them) are not detailed in publicly available summaries of the code or related documents without direct access to the full current Municipal Code Title
- Code reference
- One reference notes aggregate total lot coverage limits applying to structures in RE, R-1, and R-1A districts, but the exact percentage is not specified in available sources.
- Code reference
- For precise, current standards, consult the full Golden Municipal Code (library.municode.com/co/golden/codes/municipal_code, Title 18) or contact the city, as the zoning code has undergone form-based updates.
Codes are amended regularly — verify current requirements with **The City of Golden (specifically its Building Division/Building Department) issues residential building permits for properties within Golden city limits.
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 Golden.
- First contact for a ADU / Backyard Cottage project
- ADU / Backyard Cottage feasibility in Golden
- How a ADU / Backyard Cottage project is estimated
- Designing a ADU / Backyard Cottage project
- Booking a ADU / Backyard Cottage service
- Managing a ADU / Backyard Cottage job in the client portal
- On site: the crew app
Energy Code
Golden energy code quick facts
- Code reference
- 2024 International Energy Conservation Code (IECC), adopted by the City of Golden with no energy-specific local amendments noted beyond the base code (and state electric-ready/solar-ready provisions where applicable).
- Code reference
- Golden (Jefferson County, climate zone 5B) lists the 2024 IECC among its adopted codes on the official Building Permit Process page.
- Code reference
- Adoption aligns with the city’s update to the 2024 I-Codes suite (effective after the July 22, 2025 council action referenced in related materials).
- Code reference
- The code applies to new construction, additions, and remodels/alterations as scoped in the IECC/IRC.
- Code reference
- Key prescriptive requirements (2024 IECC residential provisions, Table R402.1.2 / R402.1.3 and related sections, climate zone 5 / 5B; relevant to additions and remodels where the thermal envelope or systems are altered):
- Ceiling/attic insulation
- Minimum R-49 (or equivalent U-factor).
- Code reference
- (2024 IECC Table R402.1.3 / IRC N1102.1.3; note reduction from prior editions.)
- Wood-frame wall insulation
- R-20 + R-5 ci, or R-13 + R-10 ci, or R-0 + R-20 ci (or equivalent U-factor options).
Codes are amended regularly — verify current requirements with **The City of Golden (specifically its Building Division/Building Department) issues residential building permits for properties within Golden city limits.
Service Area
Serving Golden and Jefferson County
We serve Golden, 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 Golden project.
FAQ
ADU feasibility FAQ
How much does ADU Feasibility Consultation cost in Golden?
$350.
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 in full. We confirm within 24 hours or refund you in full.
Can I build an ADU on my lot?
It depends on lot size, setbacks, HOA rules, and Golden’s code. Autotelic helps assess feasibility—we do not invent zoning envelopes or guarantee permit outcomes.
Is the online sizing tool a permit determination?
No. Lot-aware sizing on /adu/ is illustrative only and is not a permit determination. A clear estimate and local review come next.
What happens after I start an estimate?
You move from feasibility into a clear estimate with the same design-build team, then permit coordination and build with a licensed Denver-metro crew when you proceed.
What will an ADU cost?
The lot lookup is free. Our ADU cost page shows planning ranges for a detached backyard cottage; your lot, utility connections and finishes affect the price. Start an estimate for your project, or call (720) 287-7958 to talk it through. A fixed-price build proposal comes after feasibility.
How long does an ADU project take?
First we check your lot and agree on the scope. Then come design and drawings, city permit review, and construction with inspections. Your lot, utility connections, design changes and the city’s review schedule affect the timing. Your proposal includes a project-specific schedule before you commit to the build. A consultation booking is the first planning conversation, not a construction start date.
Who builds the ADU?
Autotelic’s local design-build team takes your project from the first concept through an estimate, permits and construction. You have one team to talk to along the way.
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.
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 →Explore
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