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CASTLE ROCK SERVICES

Basement Finish in Castle Rock

Basement Finish Design Consultation, $250

Licensed basement finish services for Castle Rock and Douglas County. Unlock your basement's full potential.

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

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Basement Finish

Unlock your basement's full potential

Book online

Pick your job and choose a time.

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

  • Basement Finish Design Consultation

    We assess egress, ceiling height, mechanical layout, and moisture conditions, then talk through floor plan options.

    Pay when you book · morning (8–12) or afternoon (12–4)

    What's included

    We assess egress, ceiling height, mechanical layout, and moisture conditions, then talk through floor plan options. You receive a written scope summary with a cost range and permit notes.

FREE PLANNING TOOLS

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

Local Service

Basement Finish Services in Castle Rock, Colorado

Autotelic provides professional basement finish services throughout Castle Rock and the surrounding Douglas County area. Complete basement finishing across the Denver metro with framing, electrical, plumbing, drywall, and optional bathroom, bar, and home theater. Whether you're in Castle Rock (Douglas County seat) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.

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.
Ord. No. 2026-017Source: crgov.com

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.

Zoning & ADU

Castle Rock zoning & ADU quick facts

R-1 — Minimum Lot Area
9000 sfR-1
R-1 — Minimum Lot Width
75'R-1
R-1 — Front Setback (min)
25'R-1
R-1 — Side Interior Setback (min)
7'R-1
R-1 — Side Setback Abutting Street (min)
25'R-1
R-1 — Rear Setback (min)
25'R-1
R-1 — Building Height (max)
35'R-1
R1 — Front Setback (min)
25'R1
Castle Rock Municipal Code Title 17 (Ord. 2019-028; current through Jun 26, 2026) R-1 setback standards (17.18.040 / 17.22.040 / 17.24.040 Development standards) — effective 2019-09-17 · Castle Rock Municipal Code Title 17 (Ord. 2019-028; current through Jun 26, 2026) R1 setback standards (17.18.040 / 17.22.040 / 17.24.040 Development standards) — effective 2019-09-17Source: library.municode.com

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.
Ord. No. 2026-017Source: crgov.com

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 a basement finish usually includes

Finishing a Denver-metro basement typically covers framing, insulation, drywall, flooring, lighting, and often a bathroom or wet bar. Creating legal sleeping rooms usually requires proper egress and smoke/CO devices. Moisture history should be understood before closing walls. A municipally licensed Denver general contractor coordinates the build and the licensed specialty trades required for plumbing, electrical, and mechanical work. Cost is project-specific and depends on square footage, bathroom inclusion, egress needs, and existing dampness.

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Egress, height, and moisture

Ceiling height and egress window or door paths constrain bedroom layouts. Chronic dampness, seepage, or high humidity should be addressed with drainage, grading, or mechanical strategies before finishes. HVAC supply and return paths need planning so the basement is conditioned with the rest of the house.

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Permits and who coordinates the work

City and County of Denver Community Planning and Development typically requires building permits for basement finishes that create habitable space, add bathrooms, or change egress, electrical, plumbing, or mechanical systems. Trade permits and inspections are part of that path. Cities and counties license general contractors. Colorado has no statewide general contractor license. Autotelic acts as a municipally licensed Denver general contractor and coordinates licensed specialty trades for the basement package.

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What buyers should decide early

Whether bedrooms will be claimed as legal sleeping rooms, bathroom count, office vs family-room use, flooring preferences over concrete, and how storage/mechanical rooms are preserved. Photos of existing moisture stains help the first assessment.

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.

FAQ

Common questions

How much does Basement Finish Design Consultation cost in Castle Rock?

$250.

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.

Does finishing a basement require a permit?

Yes — basement finishes involve framing, electrical, and often plumbing, all of which are permitted and inspected by your municipal building department. Egress requirements for bedrooms are checked at permit review.

Can a finished basement include a bedroom or rental space?

Often, if egress windows and ceiling heights meet code. We review your city’s requirements during design and tell you plainly what is and is not achievable in your space.

What does the process look like?

Design and scope first, then a real estimate in minutes with the Instant Estimate tool, then permits, build, and inspections — one team throughout.

How It Runs

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Survey

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Design

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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.