Adu housing — Westminster, 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
ADU housing refers to the creation of independent living quarters on the same lot as a primary residence. This includes everything from detached backyard cottages to converted garages or above-garage apartments. You need this if you are looking to increase the value of your property, generate rental income, or provide long-term housing for guests. It is an effective way to maximize your land use while maintaining the character of your existing home and neighborhood environment.
Frequently asked in Westminster
How much does an accessory dwelling unit permit cost in Westminster?
What are the rules for renting out an accessory dwelling unit in Westminster?
Are prefabricated accessory dwelling units a good option for Westminster?
What's the best way to approach accessory dwelling unit construction in Westminster?
What are the general considerations for an accessory dwelling unit in Westminster?
How can I finance an accessory dwelling unit in Westminster?
Are there specific ADU rules for New Hampshire that apply to Westminster?
No, ADU rules are specific to each state and municipality. Regulations in New Hampshire do not apply to Westminster, Colorado. Each locality has its own unique zoning ordinances and building codes. It's essential to consult local Westminster guidelines. We are experts in Colorado ADU rules. Call us to ensure compliance for your Westminster project.
Also serving nearby: Arvada · Thornton · Denver · Lakewood · Boulder
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Westminster — population 114,875; about 3,633 residents per square mile across 31.6 sq mi. ZIP codes covered include 80030, 80031, 80035, 80036.
Neighborhoods served in Westminster: Westminster West, Westminster East, Sheridan, Standley Lake, The Ranch — and every surrounding area.
Areas we serve
Browse by state, then city.