Accessory dwelling unit construction — 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
This involves the physical building process of your secondary unit, from site preparation and foundation pouring to framing and final finishes. You need professional construction services when you are ready to transition from blueprints to a finished, livable space. A skilled crew manages the structural integrity, plumbing, electrical, and HVAC installations, ensuring the entire building meets current safety standards and local building codes so you have a durable, high-quality home that is ready for move-in.
Frequently asked in Westminster
What are accessory dwelling units?
Accessory dwelling units, or ADUs, are secondary housing units on a single-family property. In Westminster, they can provide flexible living space. These units are typically smaller than the main home. They are designed to be self-contained with their own kitchen, bathroom, and sleeping area. Pros help you understand their function on your Westminster property.
What are the rules for ADUs in Colorado?
Colorado's regulations for ADUs vary by municipality. For Westminster, specific zoning ordinances dictate size, setbacks, and placement. Pros are up-to-date on these local rules. They ensure your ADU design complies with all state and city requirements. This knowledge is critical for a smooth permit process.
How do I find an ADU builder in Westminster?
Can I get an estimate for an ADU near me in Westminster?
What makes an ADU affordable?
Affordability in ADUs depends on size, materials, and design complexity. Pros can help you find cost-effective solutions. Prefabricated options might be more budget-friendly. Choosing a simpler design also reduces costs. Discuss your budget with a pro for an accurate quote.
What is the best type of ADU for my Westminster property?
How much does an ADU estimate typically involve?
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: Downtown Westminster, Westminster West, Westminster East, Sheridan, Hyland Hills — and every surrounding area.
Areas we serve
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