How It Works
1️⃣
Find your city
Browse our growing list of US cities with ADU-friendly zoning.
2️⃣
Get the key numbers
Size limits, setbacks, parking rules — simplified and verified.
3️⃣
Download your cheat sheet
Get the complete step-by-step PDF guide for your city.
📍 California
📍 Washington
📈 Why ADU Regulations Matter
The US is facing a housing shortage of over 3 million units. Accessory Dwelling Units (ADUs) — also known as granny flats, backyard homes, or casitas — are the fastest-growing solution. But local zoning laws vary wildly from one city to the next. ADUCheatSheet cuts through the noise and gives you the exact numbers you need.