Accessory dwelling unit cost — Westminster, CO
Last updated: September 24, 2026
Accessory dwelling units, or ADUs, are secondary housing units on single-family lots. Think of them as small, independent homes on your property in Westminster. Unlike Denver's dense urban core, Westminster offers a different pace, with a community feel that still provides easy access to city amenities. Installing an ADU can add significant value to your property, whether for rental income or accommodating family. It's a smart investment for homeowners looking to maximize their space and financial potential. Many homeowners in areas like the Westminster Village neighborhood are exploring these options. Others in the Countryside area are considering them for multi-generational living. They are experts in navigating these requirements specific to Westminster. This ensures your project moves forward smoothly and compliantly. Don't wait to explore the possibilities for your Westminster home. Call us today to get started.
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
Pricing for an ADU is driven by the quality of finishes, the foundation type, and the complexity of your site’s terrain. Projects on flat, accessible lots are generally more affordable than those requiring significant grading or utility trenching. Exact pricing confirmed free on the call.
Frequently asked in Westminster
Where can I find accessory dwelling unit services in Westminster?
What is a prefab ADU and how does it work?
What does 'accessory dwelling unit' mean for homeowners?
How do I get an ADU estimate in Westminster?
Are there any grants available for accessory dwelling units in Colorado?
How do I find the best accessory dwelling unit for my needs?
What is the permit process for an ADU 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: Westminster Village, Countryside, Westlake, Sheridan, Walnut Creek — and every surrounding area.
Areas we serve
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