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CENTENNIAL SERVICES

Basement Finish in Centennial

Basement Finish Design Consultation, $250

Licensed basement finish services for Centennial and Arapahoe County. Unlock your basement's full potential.

What Centennial requires

Code reference: In Centennial, Colorado, building permits for residential remodel work are governed by the 2021 International Residential Code (IRC) Section R105 (adopted via Centennial Municipal Code Chapter 18 – Building Regulations, per Ordinance 2023-O-06 and related adoptions of the 2021 I-Codes). §R105

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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 Centennial, Colorado

Autotelic provides professional basement finish services throughout Centennial and the surrounding Arapahoe 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 Centennial (south Denver metro) or nearby communities, our team delivers quality workmanship backed by Colorado licensing and full insurance coverage.

Permits & Licensing

Permits in Centennial

Centennial building permits, inspections, and contractor license approvals are handled by the city's Building Division. Permits and contractor licenses must be applied for online through the city's Self-Service Portal, and we handle that process as part of every project. Authority: City of Centennial — Building Division.

Permit Thresholds

Centennial permit thresholds

Code reference
In Centennial, Colorado, building permits for residential remodel work are governed by the 2021 International Residential Code (IRC) Section R105 (adopted via Centennial Municipal Code Chapter 18 – Building Regulations, per Ordinance 2023-O-06 and related adoptions of the 2021 I-Codes).§R105
Code reference
Typically exempt work (aligning with IRC R105.2 exemptions, with local application) includes:
Code reference
One-story detached accessory structures (e.g., sheds) ≤200 sq ft.
Code reference
Fences ≤7 ft high; retaining walls ≤4 ft high (measured from bottom of footing).
Code reference
Prefabricated swimming pools <24 inches deep.
Code reference
Window awnings projecting ≤54 inches.
Code reference
Decks ≤200 sq ft, ≤30 inches above grade, and not attached to the dwelling.
Use tax (not collapsed into a single rate)
City of Centennial Use Tax of 2.5% applied to the actual cost of materials, plus Arapahoe County Use Tax of 0.25% applied to the actual cost of materials.

Codes are amended regularly — verify current requirements with City of Centennial — Building Division.

Zoning & ADU

Centennial zoning & ADU quick facts

NC5 — Minimum Lot Area
5000 sfNC5
NC5 — Minimum Lot Width
50 ftNC5
NC5 — Front Setback (min)
15'NC5
NC5 — Side Interior Setback (min)
5'NC5
NC5 — Side Setback Abutting Street (min)
10'NC5
NC5 — Rear Setback (min)
15'NC5
NC5 — Lot Coverage (max)
42%NC5
NC5 — Building Height (max)
30'NC5
City of Centennial Land Development Code / official Zoning District Descriptions (2011 LDC summaries as published by the City) NC5 setback standards (Centennial Zoning District Descriptions (city website; verify against Chapter 12 LDC)) — effective 2011-01-01Source: centennialco.gov

Codes are amended regularly — verify current requirements with City of Centennial — Building Division.

Energy Code

Centennial energy code quick facts

Code reference
Centennial, Colorado, has adopted the 2018 IECC (with the 2021 I-Codes package) as its energy code, with no mention of Denver-specific overlays such as the Denver Green Code or Energize Denver.
Code reference
This is enforced by the City’s Building Division under Ordinance No. 2023-O-06 (adopting the referenced codes by reference, effective as part of the 2021/2023 code update package).Ord. No. 2023-O-06
Code reference
Centennial is in Climate Zone 5B.
Code reference
The code applies to alterations, additions, and remodels per IECC Chapter 5 (existing buildings), with the prescriptive requirements of Chapter 4 (or equivalent U-factor/UA paths) generally applying to new or modified portions of the thermal envelope.
Code reference
Key prescriptive requirements relevant to remodels/additions (drawn from 2018 IECC Table R402.1.2 and related sections for CZ 5; these are the base code values with no local amendments identified that alter them):
Ceiling/attic insulation
Minimum R-49 (or equivalent U-factor ≤ 0.026).
Adopting reference
2018 IECC R402.1.2 (Table R402.1.2).
Wood-frame wall insulation
R-20 cavity or R-13 cavity + R-5 continuous insulation (or equivalent U-factor ≤ 0.060).
Ord. No. 2023-O-06Source: centennialco.gov

Codes are amended regularly — verify current requirements with City of Centennial — Building Division.

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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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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 Centennial and Arapahoe County

We serve Centennial, 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 Centennial project.

FAQ

Common questions

How much does Basement Finish Design Consultation cost in Centennial?

$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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Build

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Verify

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How This Works (2 minutes)

  1. 1Tell us about your project (30 seconds)
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