St. Petersburg, FL Property Maintenance: Vacant Lot Maintenance (2026)

St. Petersburg regulates vacant and unimproved parcels through its rat-harborage nuisance provision rather than a grass-height ordinance. Section 8-205(a) makes it unlawful for any person to place, leave, dump, or permit to accumulate garbage, rubbish, or trash on "vacant or unimproved lands or premises" if the debris may afford food or harborage for rats: language that reaches owners of empty lots just as it reaches occupied structures. Subsection (b) adds a second, more specific rule: lumber, boxes, barrels, bricks, stones, or similar materials left on any premises, improved or vacant, must sit on open racks elevated at least 18 inches above the ground and be evenly piled or stacked so they cannot shelter rats; the Code exempts outdoor sales storage at businesses like lumberyards as long as it does not create harborage.

This sits alongside § 8-206, which separately bars letting a lot or premises, occupied or vacant, become a mosquito breeding ground by allowing untreated stagnant water to sit for more than five days. Both provisions are enforced by the city's code compliance staff and can be charged against any owner of record regardless of whether the lot has ever been built on. St. Petersburg also requires that a lot left vacant after a building is demolished be filled, graded, and seeded with grass seed or sodded within five days of the demolition's completion, so a cleared lot cannot simply be left bare.