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Arvada ADU / backyard cottage — local feasibility & estimate

ADU Feasibility Consultation, $350

Compare both studies

Exploring a backyard ADU in Arvada? 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 Arvada requires

Front setback: 18 ft. Arvada Land Development Code §2-1-3-3 (RN-6 dimensional standards, Table 2-1-3-3A) — effective 2025-12-16

See full local requirements ↓
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ADU / Backyard Cottage

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.

Studies for additions, custom homes and commercial space

FREE PLANNING TOOLS

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

Local Service

ADU / Backyard Cottage Services in Arvada, Colorado

Autotelic provides professional ADU / backyard cottage services throughout Arvada and the surrounding Jefferson/Adams 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 Arvada (historic Olde Town and rapid growth) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.

What the code allows

What the code allows in Arvada — RN-6 example

Front setback
18 ft.Arvada Land Development Code §2-1-3-3 (RN-6 dimensional standards, Table 2-1-3-3A) — effective 2025-12-16
Side setback
5 ft.Arvada Land Development Code §2-1-3-3 (RN-6 dimensional standards, Table 2-1-3-3A) — effective 2025-12-16
Rear setback
10 ft.Arvada Land Development Code §2-1-3-3 (RN-6 dimensional standards, Table 2-1-3-3A) — effective 2025-12-16
Principal building height
28 ft.Arvada Land Development Code §2-1-3-3 (RN-6 dimensional standards, Table 2-1-3-3A) — effective 2025-12-16
Lot coverage
40%Arvada Land Development Code §2-1-3-3 (RN-6 dimensional standards, Table 2-1-3-3A) — effective 2025-12-16
ADU allowed, max size, and max height
Not in our sourced tables for this municipality — we confirm with the city.
Arvada Land Development Code §2-1-3-3 (RN-6 dimensional standards, Table 2-1-3-3A) — effective 2025-12-16 · confidence high

Illustrative only — not a code determination or permit approval. Setbacks and principal height are from the municipal dimensional table; ADU-specific standards are not in our sourced tables for this municipality — run your own address.

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.

Permits & Licensing

Permits in Arvada

Arvada building permits are issued by Building Services, and the city notes that unpermitted work can jeopardize a contractor's licensing as well as a property's resale value. Permit applications, inspection scheduling, and status checks are handled through the separate Arvada Permits (eTRAKiT) site. Authority: City of Arvada — Building Services.

Permit Thresholds

Arvada permit thresholds

Code reference
Arvada requires building permits for most residential construction, alteration, repair, enlargement, replacement, equipment installation, use/occupancy changes, and demolition work, per the City’s Building Permits page and Chapter 18 of the Arvada City Code (which adopts the 2024 International ResOrd. No. 4921
Code reference
This is assessed in lieu of sales tax on construction materials used in Arvada (Arvada Municipal Code § 98-84).§ 98-84
Code reference
A separate 2026 Building Fee Schedule PDF is referenced but not detailed on the main pages.
Code reference
For the most current or project-specific details (including any local amendments to the 2024 IRC that might address minor/exempt work or structural thresholds), contact the Arvada Building Safety Division or check the adopted codes on the City website, as published information emphasizes case-by-cas

Codes are amended regularly — verify current requirements with City of Arvada — Building Services.

Energy Code

Arvada energy code quick facts

Code reference
Arvada, Colorado, has adopted the Colorado Low Energy Carbon Code (or Model Low Energy and Carbon Code/MLECC/LECC), based on the 2024 International Energy Conservation Code (IECC), with no additional local energy-code amendments noted beyond the state model. This applies alongside the 2024 Inter
Code reference
Adoption occurred via City Council action on March 24, 2026 (effective for permits submitted on or after approximately July 1, 2026).
Code reference
Arvada (Climate Zone 5B) does not use the Denver Green Code or Energize Denver program.
Code reference
For remodels and additions, the modified/new portions generally must comply with the current code (per IECC/LECC Sections C502/C503 or R502/R503 equivalents) without necessarily triggering updates to unmodified existing systems.
Code reference
Key prescriptive requirements (drawn from the 2024 IECC residential provisions as adopted in the Colorado LECC; values for CZ 5; relevant to new or modified envelope elements in additions/remodels):
Ceiling/attic insulation
Minimum R-49 (Table R402.1.3 / equivalent in LECC).
Wood-frame above-grade wall insulation
Options include R-20 + R-5 ci, R-13 + R-10 ci, or equivalent assembly U-factor ≤ 0.045 (or reduced options such as R-20 cavity with additional efficiency credits per R408); see Table R402.1.2/R402.1.3.
Air leakage (blower-door testing)
Maximum 3.0 ACH50 at 50 Pa for the tested dwelling unit or building under the prescriptive path in CZ 3–5 (R402.5.1.3 / equivalent).

Codes are amended regularly — verify current requirements with City of Arvada — Building Services.

Zoning & Dimensional Standards

Setback & dimensional standards in Arvada

Zone-district dimensional standards for Arvada, quoted verbatim from the Arvada Land Development Code. Knowing your lot's district — and its setbacks, height, and coverage limits — is where every feasibility conversation starts.

RN-12.5setback & dimensional standards
StandardRequirement
Front Setback (min)30 ft.
Side Interior Setback (min)10 ft.
Rear Setback (min)15 ft.
Building Coverage (max)35%
Building Height (max)28 ft.
Lot Area (min)12,500 sf.
Lot Width (min)100 ft.

Arvada Land Development Code RN-12.5 setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · View the code

RN-32.5setback & dimensional standards
StandardRequirement
Front Setback (min)30 ft.
Side Interior Setback (min)15 ft.
Rear Setback (min)15 ft.
Building Coverage (max)25%
Building Height (max)35 ft.
Lot Area (min)32,500 sf.
Lot Width (min)100 ft.

Arvada Land Development Code RN-32.5 setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · View the code

RN-4setback & dimensional standards
StandardRequirement
Front Setback (min)18 ft.
Side Interior Setback (min)5 ft.
Rear Setback (min)10 ft.
Building Coverage (max)40%
Building Height (max)28 ft.
Lot Area (min)4,000 sf.
Lot Width (min)40 ft.

Arvada Land Development Code RN-4 setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · View the code

RN-6setback & dimensional standards
StandardRequirement
Front Setback (min)18 ft.
Side Interior Setback (min)5 ft.
Rear Setback (min)10 ft.
Building Coverage (max)40%
Building Height (max)28 ft.
Lot Area (min)6,000 sf.
Lot Width (min)50 ft.

Arvada Land Development Code RN-6 setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · View the code

RN-7.5setback & dimensional standards
StandardRequirement
Front Setback (min)20 ft.
Side Interior Setback (min)7.5 ft.
Rear Setback (min)10 ft.
Building Coverage (max)40%
Building Height (max)28 ft.
Lot Area (min)7,500 sf.
Lot Width (min)75 ft.

Arvada Land Development Code RN-7.5 setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · View the code

RN-Dsetback & dimensional standards
StandardRequirement
Front Setback (min)18 ft.
Side Interior Setback (min)5 ft.
Rear Setback (min)10 ft.
Building Coverage (max)40%
Building Height (max)28 ft.
Lot Area (min)6,000 sf.
Lot Width (min)60 ft.

Arvada Land Development Code RN-D setback standards (2-1-3-3 Table 2-1-3-3A (RN)) — effective 2025-12-16 · View the code

Verify current requirements with the jurisdiction — informational reference only. Standards vary by overlay, lot, and use; we confirm the exact rules for your property during feasibility.

Service Area

Serving Arvada and Jefferson/Adams County

We serve Arvada, 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 Arvada project.

FAQ

ADU feasibility FAQ

How much does ADU Feasibility Consultation cost in Arvada?

$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 Arvada’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 Arvada 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.

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.

How much does an ADU cost in Arvada?

We don't put a single number here on purpose — the honest answer depends on your lot, the utility runs and the finish level. Our Instant Estimate reads the same published tier ranges we quote from and narrows them to your project in about two minutes: https://autotelic.build/estimate?trade=adu-backyard-cottage. It is an estimate, not a quote; after feasibility the build is quoted as a fixed-price proposal, so you know the number before work starts.

Garage conversion or detached backyard cottage?

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.

Should I build for a rental or for family?

The code limits on this page apply to the building no matter who lives in it — what changes is the layout and the specification. Our Premium tier is written as a rental-ready one-bedroom (complete kitchen, laundry, private entrance); family and multigenerational use more often points to a Studio ADU or a lofted Signature plan. Run the lot check for the size you are allowed, then the estimate for the tier price.

What are the drawbacks — permits, timeline, neighbors?

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. Arvada building permits are issued by Building Services, and the city notes that unpermitted work can jeopardize a contractor's licensing as well as a property's resale value. Permit applications, inspection scheduling, and status checks are handled through the separate Arvada Permits (eTRAKiT) site. We manage zoning review, the permit application and every inspection through certificate of occupancy.

How It Runs

01

Survey

02

Design

03

Build

04

Verify

DESIGN SERVICES

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Let's design your perfect ADU / Backyard Cottage together

Get a personalized estimate in about 2 minutes — no pressure, no obligation.

Licensed & Insured ContractorVeteran-Owned

How This Works (2 minutes)

  1. 1Tell us about your project (30 seconds)
  2. 2Answer a few quick questions for an accurate estimate (60 seconds)
  3. 3Get your personalized estimate instantly (30 seconds)

No pressure. No obligation. No spam calls. If we're not the right fit, we'll tell you — and even recommend someone who is.