Planning an ADU for your Palo Alto property? That's a smart move. Whether it's for family, rental income, or a home office, an Accessory Dwelling Unit can add a ton of value and flexibility. But I've seen enough projects go sideways to know there are some pretty common pitfalls homeowners fall into when they're getting started. You don't want to make these mistakes.
Mistake #1: Not Understanding Palo Alto's Specific ADU Rules
This is probably the biggest one. You can't just build anything you want. Palo Alto has its own set of rules, and they change. What was true last year might not be true today. I've had clients come to me with plans drawn up by an out-of-area architect who didn't understand our local zoning, setback requirements, or even the specific design review process for certain neighborhoods. You might think you can build a 1,200 sq ft ADU, but depending on your lot size, existing home, and even tree protection ordinances, you could be looking at something much smaller. Or maybe you're in a historic district like Professorville and there are extra hoops to jump through for exterior aesthetics.
What to watch out for: Anyone who tells you