1950 45TH STREET N Built custom in 1957 by famed mid-century builder Mercer Harshaw, this beautiful residence captures the essence of St. Petersburg’s post-war architectural boom. Set behind a private U-shaped courtyard framed with classic breeze-block detailing, the home blends iconic mid-century design with flexible modern living. Offering 4 bedrooms and 2 baths, the layout is exceptionally versatile. A thoughtfully designed wing features two bedrooms and a full bath with two separate entrances, allowing it to function seamlessly as an in-law suite, guest quarters, private office wing, or income-producing space. This rare configuration adds tremendous value and livability. Inside, the home reflects the hallmarks of Harshaw’s craftsmanship: solid block construction, clean lines, abundant natural light, and an indoor-outdoor flow centered around the sun-filled courtyard. Large picture windows brighten the main living areas, while the kitchen and dining spaces maintain the home’s original charm with room for modern updates. Rest easy as this home has a newer roof and SolarEdge solar panels with a total output of 11.52 kW. The courtyard serves as a true outdoor room-perfect for morning coffee, entertaining, or quiet evenings surrounded by patterned shadows and coastal breezes. The backyard offers additional space for gardening, pets, or future enhancements. The large side yard can easily satisfy an RV and or boat, making this the perfect primary residence or second home. Located minutes from downtown St. Pete, Gulf beaches, and the vibrant shops and restaurants along Central Avenue, this home offers the perfect blend of architectural history, privacy, and convenience. A rare opportunity to own an authentic piece of St. Petersburg’s mid-century heritage, crafted by one of the City’s most respected builders. **Flood Zone X and zoned for building an ADU**