Why ADUs Are the Next Frontier for CAPS-Certified Professionals

The phone calls are starting.

An adult daughter wants to know if she can add a small unit to her parents' property so her mother doesn't have to move to assisted living. A couple in their early 60s wants to build now, while they're healthy, so the space is ready if they ever need it. A builder is fielding questions about accessory dwelling units from three different clients in the same month - and realizing that each conversation is actually about the same thing: aging safely, independently, close to home.

Accessory dwelling units - ADUs - have been growing steadily for years. But the reasons people are building them are changing. According to a recent survey, 61% of homeowners cited multigenerational housing as their primary motivation for building an ADU. Almost three-quarters said accessibility was an important part of the plan.

That's not a renovation project. That's a specialized design challenge - and it's one that CAPS-certified professionals are uniquely prepared to meet.

Why ADUs and aging in place are converging right now

The timing isn't coincidental. The first baby boomers turn 80 in 2026. By 2030, the number of Americans over 65 will exceed the number under 18 for the first time in U.S. history. The National Association of Realtors found in its 2025 homebuyer data that 17% of recent buyers purchased multigenerational homes - and the leading reason, cited by 29% of them, was caring for aging parents.

At the same time, assisted living costs have continued to rise. Families are looking at $6,000 to $8,000 per month - $72,000 to $96,000 per year - against an average ADU construction cost of around $180,000 and doing the math. An ADU built well can pay for itself within a few years, while keeping a parent close, maintaining their independence, and preserving family connection.

That equation is driving demand. And the professionals who can execute on it credibly are still in short supply.

What most ADU builders and designers miss

The structural and permitting requirements of ADUs vary by state and municipality. Most builders working in this space have a reasonable grasp of the logistics. What's less common - and what families are increasingly asking for - is fluency in how the space needs to function for an aging adult over time.

A zero-threshold entry is not just an aesthetic choice. Grab bar placement is not decorative. Doorway widths, lighting levels, floor surfaces, bathroom layout - these decisions interact with each other in ways that require a specific kind of knowledge. A bathroom that works beautifully for a 72-year-old in 2026 may not work for that same person at 82. Building for aging in place means building for a range of abilities, not a single moment.

This is the knowledge gap that separates a good ADU from a great one - and it's exactly what CAPS certification is designed to close.

What CAPS training gives you in this context

CAPS III - Floor Plan Solutions - covers the spatial and design decisions that make aging-in-place environments work: visitability, universal design principles, room-by-room assessment, and the modifications that preserve independence at different ability levels. For builders and remodelers, this course translates directly into better ADU projects. For designers and architects, it fills a gap that most design programs never addressed.

But CAPS training isn't just technical. It changes how you communicate with clients. When a family is deciding whether to build an ADU or move a parent into memory care, they're not just buying square footage. They're making one of the most emotionally significant decisions of their lives. A professional who can speak to both the design specifics and the human realities of aging - who can explain why a particular floor plan will serve a parent's dignity and independence - is a fundamentally different professional than one who can only quote the construction costs.

That's the CAPS difference.

What this means for real estate professionals

For real estate professionals - especially those with SRES designation - ADUs represent a growing part of both the buyer and seller conversation. Adult children are asking whether a potential purchase has ADU potential. Sellers are asking whether adding an ADU before listing would increase value and expand the buyer pool. And aging clients are asking whether it makes more sense to stay and build, or to sell and move.

CAPS training gives real estate professionals a framework for these conversations that goes beyond square footage and comparable sales. It's the kind of expertise that turns a transaction into a trusted advisory relationship.

The professionals already doing this work

Across the country, CAPS-certified builders, designers, and OTs are already fielding the ADU conversations. They're the ones who can walk a site with a family, listen to the specific concerns about a parent's mobility or memory, and come back with a design plan that addresses those concerns rather than ignoring them.

If ADU projects are showing up in your pipeline - or if you want them to - this is the credential that gets you ready. Not because it teaches you everything about construction or design, but because it teaches you how to think about aging spaces. How to see what a client's family member will actually need, not just what the current resident can manage.

The first baby boomers turn 80 this year. The families building ADUs for them are starting their search right now.

Ready to earn your CAPS certification? Fritzi Gros-Daillon - NAHB Master Instructor and 2019 Educator of the Year - teaches every course personally. Classes run live on Zoom, with May sessions now open for registration.

-> View the CAPS training schedule and register

Already working with a family navigating ADU or home modification decisions? Household Guardians offers aging-in-place consulting for families and professionals.

-> Schedule a consulting call