Should I Build an ADU in Denver in 2026?

Yes! Now is as good a time as there has ever been to build an ADU in Denver 

Denver homeowners are increasingly looking to their own lots as long-term investment opportunities. With interest rates stubbornly high, an ADU can generate rental income, support aging parents, provide housing for adult children, or increase resale value without having to take on an entirely new mortgage. 

Colorado and Denver’s zoning has caught up to this trend. In 2024, the state passed a law that requires many local governments—Denver included—to allow the construction of ADUs by right in most residential zones. This change has cut red tape, led to streamlined permitting, and made for less confusing zoning regulations. Denver updated it’s own codes that same year to allow ADUs in all residential areas following, opening 70% of the city’s land to potential ADU construction. 

Again, now is a great time to build an ADU. 

But keep in mind, while Denver’s ADU market is growing, it’s not a gold rush. In fact, only a few hundred ADUs have been built across the city in recent years, and even with zoning reforms, annual production remains modest

Why? Because building an ADU in Denver still requires patience, capital, and a clear understanding of the process. Permitting often takes months. Financing isn’t always straightforward. And zoning rules — especially around lot size, height limits, and bulk plane requirements — mean that building an ADU isn’t as simple as throwing up four walls and a roof. A 2024 report from the Bell Policy Center noted that large multifamily buildings can often be completed on timelines comparable to just a couple of ADUs — a reminder that small-scale doesn’t always mean simple.

All to say, we think you should build an ADU in Denver in 2026, but be thoughtful about your planning. Many contractors treat ADUs as an add-on service. Others push pre-designed, one-size-fits-all solutions. Some focus more on financing packages than construction quality. Few bring a structured, transparent, commercial-grade process to residential work.Not many understand all the requirements of building an ADU in Denver. Few focus on process transparency. Fewer still emphasize craftsmanship as the foundation.

Denver Custom ADU brings the discipline of commercial construction into residential ADUs. Fixed pricing. Clear contracts. Structured timelines. Proactive communication. And above all, craftsmanship that reflects the character of your home and neighborhood.