Off-Grid Living in Caroline County, Maryland

I've been digging through Caroline County, Maryland's official pages to figure out what's actually true for anyone thinking about living off-grid here, and the short version is: this is a county with real, unified zoning, so you can't treat it like some of Maryland's looser rural counties.

Zoning. Unlike some rural counties where zoning varies town by town, Caroline County has countywide zoning administered by the Department of Planning and Codes. The zoning ordinance, adopted by the County Commissioners and rewritten in 2012, sets up Rural, Residential, and a Rural Revitalization overlay district, each with its own use table. If you're eyeing raw land, expect it to fall into one of these districts, and expect site plan review before you build anything substantial.

Dwellings, tiny homes, and RVs. I couldn't find county-level detail on minimum dwelling size or whether an RV can be a permanent residence. What I did find is that the county's building code adoption article explicitly extends permit requirements to manufactured homes, including moving, placing, or parking one. Anything you read online claiming a specific tiny-home square footage rule for Caroline County should be confirmed directly with Planning and Codes before you rely on it.

Building permits. The county requires a permit for basically everything: new construction, additions, decks, sheds, pools, solar installs, plumbing and electrical work, in unincorporated areas. A single residential permit application can trigger up to ten separate internal review functions, so budget patience for the process.

Septic. All septic work must be done by an installer licensed by both the state and the county Health Department, and a percolation approval is required before you can even apply for an On-Site Sewage Disposal Permit. Composting toilets aren't addressed separately in anything I found, so the state's baseline restrictions apply by default. Appeals of county septic decisions go up to the Maryland Department of the Environment.

Greywater and rainwater. I found no Caroline County-specific rules on either. Both appear to fall back to Maryland's state-level baseline, meaning greywater reuse is state-restricted to shower, bathtub, and bathroom-sink sources, while rainwater harvesting is generally an approved practice statewide. Treat this as inherited, not confirmed at the county level.

Wells. The county Health Department's Environmental Health Division approves wells, which must be installed by a licensed driller. There are real setback numbers here: wells need to be at least 30 feet from structures and 50 to 100 feet from sewage disposal areas depending on well type. Water testing for bacteria, turbidity, nitrates, and arsenic is required before you get a Certificate of Potability, and it's the homeowner's job to arrange it.

Full grid disconnection. There's no standalone county ordinance saying you can or can't disconnect entirely. It gets governed indirectly through the building permit process, since new construction in towns with public water requires the Health Department to verify water supply adequacy before a permit issues.

Bottom line: Caroline County is permit-heavy and process-heavy compared to some off-grid-friendly counties. Call before you buy land.