3516 21st Ave S, St Petersburg, Florida 33711

Welcome to 3516 21st Ave S, St. Petersburg, FL Masterfully crafted by McDew Development, this stunning custom built 4-bedroom, 2.5-bath modern home PLUS a 2-bedroom/1-bath Additional Dwelling Unit sits on a generous third-of-an-acre lot and delivers an unmatched combination of luxury and value. The striking modern exterior features custom white stucco, dark architectural trim, and sleek black impact windows. A wide front porch welcomes you home, while extendable sliders open from the main living area to a rear patio leading to an expansive privately gated backyard — plenty of room for a pool. Ceilings over 9 feet high throughout, luxury vinyl plank flooring, wide baseboards, impact windows, and recessed lighting set the tone from the moment you walk in. The chef’s kitchen is the heart of the home with a massive waterfall island with in-island sink, custom floor-to-ceiling two-tone wood cabinetry, quartz countertops, built-in cooktop, wall oven, wall microwave, and counter-depth refrigerator. A separate pantry with additional cabinetry and counter space completes the picture. The open-concept kitchen, dining, and living areas flow seamlessly together. The main floor primary suite features built-in walk-in closets and a designer en suite with wall to ceiling wide format luxury tile shower, soaking tub, floating double vanity, and private water closet. A dedicated home office rounds out the main floor. Upstairs, three additional bedrooms surround a great room with wet bar, perfect for entertaining or relaxing. This property truly stands apart with a fully self-contained detached 2-bedroom, 1-bath, 800 sq ft ADU like a complete home unto itself featuring its own living area, full kitchen, laundry, and private balcony. Whether you’re generating rental income, hosting extended family, or accommodating guests in style, this ADU is a rare and valuable bonus that few properties can offer. All of this sits above a spacious 3-car garage with direct alley access, making the entire property as functional as it is impressive. Situated in the heart of St. Petersburg, just minutes from Downtown, the St. Pete Pier, Gulfport, Tropicana Field, and I-275. Not in a flood zone. Custom built in 2026 and ready to make your own!