3516 21st Avenue S, ST PETERSBURG, FL

$1,250,000

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4

Beds

3

Baths

3,345

Square feet

0.31

Acres

About 3516 21st Avenue S

Under contract-accepting backup offers. NEW 2026 BUILD! Welcome home to this luxury estate featuring 4 bedrooms plus an office, 2.5 baths, and a detached 2-bedroom, 1-bath guest house, all situated on an expansive third-of-an-acre lot designed to provide privacy between both residences. Built by McDew Development, this unique property offers luxury living, exceptional flexibility, and income-producing potential in one of St. Petersburg’s fastest-growing areas. The striking modern exterior showcases custom white stucco, dark architectural accents, and black impact-rated windows and doors. A welcoming front porch leads to an open-concept interior featuring soaring ceilings, luxury vinyl plank flooring, wide baseboards, recessed lighting, and designer finishes throughout. Expansive sliders open to a private, fully fenced backyard with ample room for a resort-style pool. At the heart of the home, the chef’s kitchen features a waterfall island, floor-to-ceiling two-tone wood cabinetry, quartz countertops, built-in cooktop, wall oven, wall microwave, counter-depth refrigerator, and a spacious walk-in pantry with additional storage and prep space. The first-floor primary suite offers custom walk-in closets and a spa-inspired bath with a soaking tub, oversized shower, floating double vanity, and private water closet. A dedicated office completes the main level. Upstairs, three additional bedrooms surround a spacious loft-style great room with a wet bar, ideal for entertaining or relaxing. Adding tremendous value is the detached 800 SF ADU, complete with 2 bedrooms, 1 bath, a full kitchen, living area, laundry, and private balcony. Whether used for rental income, multigenerational living, or extended guests, this fully self-contained residence provides versatility rarely found in new construction. The property is completed by an oversized 3-car garage with alley access and is conveniently located minutes from Downtown St. Petersburg, the St. Pete Pier, Gulfport, Tropicana Field, and I-275. Situated outside a flood zone and custom built in 2026, this is a rare opportunity to own a private modern luxury retreat with both lifestyle and investment appeal.

Features of 3516 21st Avenue S

MLS® # TB8516916
Price $1,250,000
Bedrooms 4
Bathrooms 3.00
Full Baths 2
Half Baths 1
Square Footage 3,345
Acres 0.31
Year Built 2026
Type Residential
Sub-Type Single Family Residence
Style Contemporary, Custom
Status Pending

Community Information

Address 3516 21st Avenue S
Area St Pete/Gulfport
Subdivision CHILDS PARK
City ST PETERSBURG
County Pinellas
State FL
Zip Code 33711-3215

Amenities

Parking Alley Access, Assigned, Driveway, Garage Door Opener, Garage Faces Rear, Ground Level, Guest, Oversized, RV Parking
# of Garages 3
View City
Is Waterfront No
Has Pool No

Interior

Interior Features Built-in Features, Ceiling Fan(s), Eating Space In Kitchen, High Ceilings, Kitchen/Family Room Combo, Living Room/Dining Room Combo, Open Floorplan, Primary Bedroom Main Floor, Solid Surface Counters, Solid Wood Cabinets, Thermostat, Walk-In Closet(s), Wet Bar
Appliances Bar Fridge, Built-In Oven, Cooktop, Dishwasher, Disposal, Exhaust Fan, Microwave, Range Hood, Refrigerator, Tankless Water Heater, Wine Refrigerator
Heating Central, Electric
Cooling Central Air
Fireplace No

Exterior

Exterior Features Balcony, Courtyard, Irrigation System, Lighting, Private Entrance, Private Mailbox, Private Yard, Sliding Doors
Lot Description Cleared, City Lot, Landscaped, Level, Oversized Lot, Private, Sidewalk
Roof Shingle
Foundation Slab

Additional Information

Date Listed June 19th, 2026
Days on Market 72
Foreclosure No
Short Sale No
RE / Bank Owned No

Listing Details

OfficeEXP REALTY LLC

Listing Map

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