Adu permit — Centennial, CO
Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.
About this service
Obtaining an ADU permit is the legal process of getting approval from your local planning department to build or convert a secondary living space. You need this to ensure your project complies with safety codes, setbacks, and neighborhood density regulations. Skipping this step can lead to significant legal issues or problems when you try to sell your home later. Permit fees are influenced by your city’s requirements and project size. Exact pricing confirmed free on the call.
Frequently asked in Centennial
What are the benefits of a prefabricated accessory dwelling unit?
What are affordable ADU options in Centennial?
What accessory dwelling unit companies serve Centennial?
What are accessory dwelling unit homes like?
Accessory dwelling unit homes are secondary residences on a single-family lot, offering independent living quarters. They can be attached to the main house or be detached structures. In Centennial, ADUs are popular for rental income, housing family members, or for guests. The specialist you'll speak with can discuss design options and benefits tailored to your property.
What is the process for accessory dwelling unit permit?
What are the costs to build an accessory dwelling unit?
What is a backyard accessory dwelling unit?
A backyard accessory dwelling unit is a detached ADU located on the same property as the primary residence, typically in the backyard. These units offer privacy and can be an excellent way to utilize yard space. In Centennial, they are a popular choice for rental income or accommodating family. The specialist you'll speak with can explain the specific benefits and considerations for backyard ADUs.
Also serving nearby: Aurora · Denver · Lakewood · Westminster · Arvada
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Centennial — population 106,883; about 3,544 residents per square mile across 30.2 sq mi.
Neighborhoods served in Centennial: Cherry Creek State Park area, Southglenn, DTC (Denver Tech Center) adjacent areas, Dove Valley, Smoky Hill — and every surrounding area.
Areas we serve
Browse by state, then city.
California (4)
All of California · Rialto · San Buenaventura (Ventura) · San Mateo · Vacaville