Martin County, FL Parking Rules: Commercial & Oversized Vehicles (2026)

Sec. 2 of the Martin County Land Development Regulations (Article 3, Division 4, Miscellaneous Development Standards) lists what accessory uses are permitted on residential lots in Category A, B and C zoning districts, which cover the county's single-family and multi-family residential classifications. Subsection i limits a household to the storage or parking of one commercial vehicle or commercial trailer, capped at a one-ton cargo capacity, and only if the resident of the property owns or operates it and it is garaged or otherwise screened from view of adjoining properties and the adjoining street.

Public service vehicles used for law enforcement or emergency response are exempt from the screening requirement. The companion subsection h covers recreational vehicles, boat trailers, camping trailers, travel trailers, motorized dwellings, tent trailers, and horse vans: they cannot be used for living, sleeping, or occupancy while parked, and any unit longer than 25 feet cannot be parked or stored within a side or rear setback area. A separate, more permissive rule applies in the AG, AR, and A-1A/A-1/A-2 agricultural districts, where a resident may keep one owner-operated commercial vehicle or tractor-trailer over one ton if it is used for farm purposes, not for a trucking business, and parked within the applicable district setbacks.

Both standards sit in the LDR's general accessory-use framework, which requires every accessory structure or use to also comply with the standards applicable to the principal residential use unless specifically exempted.