Todd Michael Glaser, a developer known for multimillion-dollar waterfront estates and the One Thousand Museum tower rising near downtown Miami, is on the prowl for up to 50 tear-downs in Miami Beach.

He’s been scooping up derelict real estate on quiet streets, buying tear-downs, replacing them with houses priced from $3 million to $7 million — and closing deals weeks after completing construction of homes built on speculation with no set buyers.