InQI Blog

ADU laws vary dramatically from state to state — and often from county to county. This guide covers size limits, setbacks, owner-occupancy rules, and what to expect when pulling a permit in the most active ADU states in 2026.

A site plan and a property survey sound interchangeable — but they're not. One is a scaled drawing for design and planning. The other is a legal field measurement. Here's what each one does, what each costs in 2026, and which one your project actually needs.