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Centennial’s high-value homes, DTC proximity, and strong rental market make it one of the best suburban ADU investments in the south metro. Here’s what you need to know.
Centennial is Arapahoe County’s largest city and sits adjacent to the Denver Tech Center — creating consistent rental demand from tech and professional workers. The city has updated its code to comply with HB 24-1152, enabling ADU construction through administrative approval.
Many Centennial neighborhoods have HOAs. Under HB 24-1152, these HOAs cannot ban ADU construction — they can only impose reasonable restrictions around exterior aesthetics. ADU applications are processed administratively by Arapahoe County (Centennial contracts with the county for permitting services). Side and rear setbacks follow county standards for accessory structures.
Detached Backyard Cottages ($180K–$360K): Centennial’s larger lots and high home values support the investment in new detached construction. DTC proximity drives strong rental rates.
Basement ADUs ($40K–$110K): Many Centennial homes have full unfinished basements that convert well, particularly those with walk-out configurations on sloped lots near the E-470 corridor.
Garage Conversions ($50K–$135K): Three-car garages common in Centennial’s newer subdivisions are strong conversion candidates, especially where HOA design standards are easier to meet with an attached structure.
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