Off-Grid Laws in Florida

I've been digging into what it actually takes to live off-grid in Florida, and the honest answer is: there's no single "off-grid law" here. What you get instead is a layered system, state statutes and administrative code set the floor, and county or city governments (sometimes even down to the parcel) decide what you can actually do on your land. Let me walk through what I found, dimension by dimension.

Zoning and raw land. Florida's Local Government Comprehensive Planning and Land Development Regulation Act hands zoning power to counties and municipalities. That means whether you can legally occupy raw land, and what minimum lot size applies, is a local question. Orange County, for example, requires a minimum of two acres for a residential mobile home in agricultural zoning. Your county will have its own number, and you need to check with the local zoning department directly, not assume another county's rule applies to you.

Tiny homes, RVs, and dwellings. Florida statute (Ch. 320, F.S.) sets maximum sizes for travel trailers, park trailers, and fifth-wheels, things like a 320 square foot cap on travel trailers. But there's no statewide minimum square footage for a site-built home, that's a local building code matter. And critically, whether you can actually live full-time in an RV or tiny home on wheels in a given zone is a county or city decision, not a state one. Plenty of counties treat RVs as temporary occupancy only.

Building permits. The Florida Building Code is the state-adopted standard, but your county or city building department is the one issuing permits and doing inspections. Charlotte County's ordinance, which is fairly typical, requires a permit before you place or connect a mobile home or RV, and you can't occupy it until it passes inspection and gets a certificate of occupancy. For mobile-home and RV parks specifically, the state adds density and setback standards through Florida Administrative Code 64E-15.

Septic and composting toilets. This one is genuinely state-regulated. The Florida Department of Health, working with the Department of Environmental Protection, permits onsite sewage treatment and disposal systems (OSTDS) under state statute and Chapter 64E-6, F.A.C. If your home isn't on public sewer, you need a DOH permit through your county health department before you install anything. Composting or incinerating toilets are allowed, but only if they meet ANSI/NSF Standard 41 and are paired with an approved system for the liquid waste, they can't stand alone. Plain pit privies are not allowed for a permanent residence.

Greywater. Florida's Building Code narrowed this significantly. As things stand, greywater reuse is only legally sanctioned for flushing toilets and urinals, and it still has to discharge into an approved sewer or OSTDS. Landscape irrigation with greywater is not currently a permitted use under the state code, worth knowing if that was part of your off-grid plan.

Rainwater harvesting. Here I have to be honest that I couldn't pin down a specific state statute that squarely addresses residential rainwater cisterns. Non-potable, landscape-only catchment appears broadly tolerated, but if you want to drink it, you're stepping into DOH drinking-water rules, and local plumbing codes may have their own cross-connection requirements. Confirm with your county building department before you rely on a rainwater system as your only water source.

Wells. Well construction is governed by state statute and DEP rule, but the actual permitting is delegated down to Florida's five regional Water Management Districts, and often further delegated to county health departments. So the office you call depends entirely on where you are, your local water management district or your county health department is the right first call.

Full utility disconnection. No state law explicitly says you can or can't live fully off-grid, disconnected from public water, sewer, and power. The practical constraint is indirect: you still need DOH/DEP-approved sewage disposal and, if you're not on public water, a permitted well. Beyond that, some counties attach utility-connection conditions to a certificate of occupancy. This varies enough by county that I'd call it unconfirmed as a statewide rule, and it's exactly the kind of thing to ask your local building department about before you buy land.

Bottom line. State agencies (DOH, DEP, the Water Management Districts, FLHSMV for titling) set the technical rules for septic, wells, and vehicle classification. But your county or city zoning and building departments decide what you can build, where, and whether you can live in it full-time. Always check both levels before you commit to a property.