Modular accessory dwelling unit — 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
A modular ADU is built in a factory and then transported to your property to be assembled on a foundation. You should consider this if you want a faster construction timeline and less disruption in your backyard. Because the units are built off-site, they are often cost-effective and efficient. We help you choose the right model and ensure the site is ready for delivery. Exact pricing confirmed free on the call.
Frequently asked in Westminster
What's the typical cost for an ADU in Westminster?
Can I find accessory dwelling units available near me in Westminster?
What exactly does 'accessory dwelling unit' mean?
An accessory dwelling unit (ADU) is a secondary housing unit on a single-family residential lot in Westminster. It's typically a smaller, independent living space like a basement apartment or detached backyard cottage. ADUs offer flexible housing options for family or rental income. Call us to discuss how an ADU can work for your Westminster property.
What are the benefits of adding an ADU to my Westminster home?
Are 24-hour ADU services available in Westminster?
Where can I find information on ADUs in New Hampshire?
How do I find a reliable accessory dwelling unit contractor in Westminster?
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: Sheridan, Standley Lake, Walnut Creek, Westminster West, Westminster East — and every surrounding area.
Areas we serve
Browse by state, then city.