Lakewood, CO 80227

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Covered porch on a completed home addition on the Front Range
Centennial, Colorado · Design-Build

Centennial additions, ADUs and whole-home remodels.

Design-build across Centennial — additions, accessory dwelling units, whole-home remodels and structural work, documented from the framing through to the final walk.

Get a free estimate →How Centennial permitting works
Centennial, Colorado

Centennial is the only city here that tells you how long review will take.

Most Front Range jurisdictions publish nothing about turnaround. Centennial publishes the full set: new residential construction at 15 business days, additions at 10, and alterations and decks at 5. If you are trying to hit a season, that is the difference between a schedule and a hope.

Permit review timesPublished in full — 15 / 10 / 5 business daysCentennial publishes what almost nobody else does: residential new construction 15 business days, additions 10, alterations and decks 5. That makes a Centennial project genuinely schedulable. We build the programme around those windows rather than around a guess.
Accessory dwelling unitsAllowed — Ordinance 2025-O-06Centennial adopted its ADU ordinance, 2025-O-06, published 3 June 2025. Owner-occupancy is not required, though absentee owners must register. The size cap is 50% of the principal dwelling’s footprint, and a detached unit is limited to 17 feet in height.
The design-match ruleThree attributes out of sixThis is unusual and it shapes the drawings. A Centennial ADU must match the principal dwelling on at least three of: roof pitch, cladding, windows, doors, architectural features, or colour palette. It is entirely workable — but it is a design input from the first sketch, not a finish selection at the end.
One tension we flag honestlyParkingCentennial’s ordinance requires one parking space for an ADU. Colorado HB24-1152 generally bars a new parking requirement for an ADU in subject jurisdictions, and Centennial is one. That is a live tension between a local ordinance and state law. We confirm the current position with the city before design rather than assuming either outcome.

Verified against official City of Centennial and Colorado Department of Local Affairs sources as of August 2026. Code editions and ADU rules change, and several Front Range jurisdictions are mid-revision right now. Treat this as the starting point for your project, not as legal advice, and confirm the current standard with Centennial Community Development before you commit to a design. We do that on every job as a matter of course.

Straight Answers

Centennial questions we get asked.

How long does a Centennial permit actually take?

Centennial is the rare jurisdiction that publishes the answer: residential new construction 15 business days, additions 10 business days, and alterations and decks 5 business days. Those are review windows rather than total project timelines, but they make a Centennial schedule genuinely plannable – most Front Range cities publish nothing at all.

What is the Centennial ADU design-match rule?

A Centennial accessory dwelling unit must match the principal dwelling on at least three of six attributes: roof pitch, cladding, windows, doors, architectural features, or colour palette. It is workable, but it is a design input from the first sketch rather than a finish decision at the end. Under Ordinance 2025-O-06, published 3 June 2025, owner-occupancy is not required though absentee owners must register, the size cap is 50 per cent of the principal dwelling’s footprint, and a detached unit is limited to 17 feet in height.

Does Centennial require a parking space for an ADU?

Its ordinance says yes, and state law generally says no – so we confirm rather than assume. Centennial’s ADU ordinance requires one parking space. Colorado HB24-1152 generally bars a new parking requirement for an ADU in subject jurisdictions, and Centennial is a subject jurisdiction. That is a genuine live tension between a local ordinance and state law, and we get the city’s current position in writing before design.

Completed covered porch on a home addition on the Front Range
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Bring us the house you already love.

We will look at what is standing, what it can carry and what Centennial allows on your lot — then tell you honestly what it takes. It starts with a short phone consult, not a sales visit.

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What We Build

Whole-Home Remodels

Down to the studs where it needs to be, staged so you can live through it where it does not.

Home Additions

Rear, side and bump-out additions engineered to what the existing structure can actually carry.

ADUs

Detached, attached and basement accessory dwelling units, designed to the standard that applies on your lot.

Second Storeys & Pop-Tops

Adding a floor without moving. The structural question gets answered before the design does.

Kitchen Remodels

Layout, structure and services together — most kitchens that disappoint were solved on paper only.

Basement Finishes

Egress, ceiling height, moisture and mechanicals settled before a single wall goes up.

Structural Remodeling

Load-bearing walls, beams and foundations — the work that makes open plans possible.

Custom Homes

Ground-up design-build on your lot, with the same documentation discipline as our remodels.

Nearby

Englewood

Bulk plane, the 2024 code, and an ADU allowance with no owner-occupancy and no parking requirement.

Littleton

On the 2024 code, with historic review scoped so most interior work needs no approval.

Greenwood Village

Still on the 2018 residential code, with South Metro Fire and HOA sign-off in the critical path.