Are ADUs legal in Florida?

Florida allows ADUs in many areas, but rules vary by city and county. Zoning, lot size, parking, occupancy, and permitting requirements must be met. Always verify local regulations before building.

What is the difference between an ADU and an in-law suite?

An ADU is typically a self-contained living unit with its own kitchen, bathroom, and entrance. An in-law suite may be internal or attached and often has more restrictions depending on zoning.

Do I need permits for a garage conversion?

Yes. Garage conversions almost always require permits. Unpermitted conversions can affect insurance, financing, appraisals, and resale value.

Can zoning violations affect resale?

Yes. Zoning and permit issues can delay or kill deals, limit financing options, and require costly remediation before closing.

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January 09, 2026

Zoning, ADUs, and In-Law Suites in Florida: What Multigenerational Homeowners Must Know (2026)

Zoning, ADUs, and In-Law Suites in Florida

2026 Multigenerational Housing Guide — what’s legal, what requires permits, and what can derail a sale if done wrong.

Zoning and permitting are where many well-intentioned multigenerational housing plans go sideways. Homeowners focus on functionality — but buyers, lenders, insurers, and appraisers focus on legality.

This guide explains how Florida zoning rules affect in-law suites and ADUs, and how to protect yourself from expensive compliance mistakes.

What is an ADU under Florida zoning?

An accessory dwelling unit (ADU) is a secondary residential unit located on the same lot as a primary home. It usually includes a kitchen, bathroom, sleeping area, and separate entrance.

ADUs are regulated locally. That means what’s allowed in one city may be prohibited a few miles away.