ADU rules in Collier County, FL — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Collier County permits a detached guesthouse as an accessory use, but renting or leasing it is prohibited. It requires at least a one-acre (43,560 sq ft) lot, cannot exceed 40% of the main home's living area, and must sit 20 feet from the principal dwelling.
Under LDC 5.03.03, a guest accommodation in a single-family district may never be used for commercial purposes, and leasing or renting one is a code violation. Site standards: minimum lot area 43,560 square feet, minimum lot width 105 feet, maximum floor area 40% of the principal dwelling's air-conditioned living area, and detached guesthouses no closer than 20 feet to the main home. A guesthouse may be built before the principal home if it meets single-family standards. A separate kitchen can reclassify it as a second dwelling unit, which single-family zoning bars. Inside Naples, Marco Island, or Everglades City, the city's own rules apply.
Renting or leasing a guesthouse violates the LDC and is handled by Collier County Code Enforcement, which can impose daily fines under Florida Statutes Chapter 162 until corrected.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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Collier County has no ordinance that bans or permits home composting; backyard composting is allowed and encouraged. Compost and yard debris must not become ...
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Collier County's landscaping code (LDC 4.06.05) limits artificial ground cover. Stone, gravel or any artificial ground cover may not be used for more than 20...
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Collier County's Land Development Code favors native plants: required landscaping on sites south and west of US-41 must be 100% native species, native ground...
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Rainwater harvesting is encouraged in Collier County. Plants watered by rain barrels, cisterns, low-volume micro-irrigation or hand-held hose can be watered ...
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Collier County follows South Florida Water Management District year-round rules. Odd-numbered addresses water Monday, Wednesday and Saturday; even addresses ...
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Collier County's weed and litter ordinance (Section 54-185) treats accumulation of weeds, grass or similar overgrowth over 18 inches as a violation. The coun...
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