Miami Beach, FL Property Maintenance: Vacant Lot Maintenance (2026)

Sec. 58-299 sets the baseline duty for every vacant building, structure, or unimproved lot in the city: the owner must keep the premises clean and sanitary, free from excessive weed and grass growth, free from rodents, insects, and vermin, and graded to prevent standing water. Sec. 58-300(a) turns a lot that fails that standard into a declared nuisance outright whenever the excessive growth or accumulated garbage sits within 200 feet of any improved property and becomes a breeding ground for mosquitoes, rodents, vermin, or wild animals, or otherwise threatens public health or safety.

Once the special magistrate finds a lot in violation of that nuisance standard, or of the vacant-building securing rules in Sec. 58-299(j), on two separate occasions within an 18-month period, or the city has had to clear the lot itself three times in 18 months, Sec. 58-300(b) requires the owner to enclose the property with a wall or a black or green vinyl-coated fence at least five feet tall, within 45 days of a certified-mail notice. An owner who thinks the citation was wrong can appeal to the special magistrate under Sec. 58-233, but if the deadline passes without a fence going up, the city can build the fence itself at the owner's expense and bill the cost. Unpaid bills convert into a special assessment lien on the property, ranked equal to a tax lien and enforceable the same way, with interest running from the date the city certifies the expense.