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$1,250,000

4 Beds 2 / 1 Full / Half Baths 3,345 SQFT 0.31 Acres
Type: Single Family

3516 21ST AVENUE S
ST PETERSBURG, FL 33711

MLS#: TB8516916
Gina Brethorst
Gina Brethorst
The Real Estate Advantage
Agent
Phone: 612.207.0272
Office: 952.224.8800
Presented by: EXP REALTY LLC with 888-883-8509. - 888-883-8509

Property Description

 

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.


 

Interior Features

Bedrooms

Total Bedrooms4

Bathrooms

Half Baths1
Total Baths3

Other Interior Features

LivingAreaSource0 sqft
Air Conditioning Y/NYes
Fireplace Y/NNo
FlooringLuxury Vinyl, Tile
Furnished Y/NUnfurnished
Heating Y/NYes
Interior AmenitiesBuilt-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
Laundry FeaturesElectric Dryer Hookup, Laundry Room, Washer Hookup
Window FeaturesENERGY STAR Qualified Windows, Insulated Windows, Storm Window(s)

General

Additional Parcels Y/NNo
Additional RoomsDen/Library/Office, Great Room, Inside Utility, Interior In-Law Suite w/Private Entry
AppliancesBar Fridge, Built-In Oven, Cooktop, Dishwasher, Disposal, Exhaust Fan, Microwave, Range Hood, Refrigerator, Tankless Water Heater, Wine Refrigerator
Architectural StyleContemporary, Custom
Attached Garage No
Builder NameMcDew Development
Building Area Units0 sqft
Carport Spaces6
Carport Y/NYes
CityST PETERSBURG
Construction MaterialsBlock, HardiPlank Type, Stucco
CoolingCentral Air
CountyPinellas
DirectionsHwy 275 to 22nd Ave S, Right on 35th St S, Left on 21st Ave S.
Facing DirectionNorth
Flood Zone Codex
Flood Zone Code XY
Full Baths2
Garage Spaces3
Garage Y/NYes
HeatingCentral, Electric
Home Warranty Y/NYes
ILS Under Air SQFT800
In Law Suite Description2+ Bathrooms, 2+ Bedrooms, Detached (ADU), Kitchen, Private Entrance
In Law Suite YNYes
Land Lease Y/NNo
Lease Considered Y/NYes
Legal DescriptionCHILDS PARK BLK 6, LOT 3
LevelsTwo
Listing TermsCash, Conventional
Living Area Units0 sqft
Lot Size Square Feet13321
Lot Size UnitsSquare Feet
MLS Area33711 - St Pete/Gulfport
Minimum Lease3 Months
New ConstructionYes
Occupancy TypeVacant
Other StructuresAdditional Single Family Home, Guest House
OwnershipFee Simple
PossessionClose Of Escrow
Property ConditionCompleted
Property SubtypeSingle Family Residence
Property TypeResidential
RoofShingle
Security FeaturesSecurity Gate
Senior Community Y/NNo
SewerPublic Sewer
Standard StatusActive Under Contract
StatusPending
Subdivision NameCHILDS PARK
Tax Annual Amount$1,959
Tax Lot3
Tax Year2025
Total Rooms14
UtilitiesBB/HS Internet Available, Cable Available, Electricity Connected, Public, Sewer Connected, Water Connected
ViewCity
Virtual TourClick here
Water Access Y/NNo
Water View Y/NNo
Year Built2026

Exterior

Building Area Total3,730 sqft
Covered Spaces9
Exterior AmenitiesBalcony, Courtyard, Irrigation System, Lighting, Private Entrance, Private Mailbox, Private Yard, Sliding Doors
FencingMasonry, Vinyl
Foundation DetailsSlab
Lot Dimensions71 x 187
Lot FeaturesCleared, City Lot, Landscaped, Level, Oversized Lot, Private, Sidewalk
Lot Size Acres0.31
Lot Size Area13,321 sqft
Parking FeaturesAlley Access, Assigned, Driveway, Garage Door Opener, Garage Faces Rear, Ground Level, Guest, Oversized, RV Parking
Private PoolNo
Road Frontage TypeStreet Paved
Road Surface TypePaved, Asphalt
Water SourcePublic
Waterfront Y/NNo

Additional Details

Price History

Schools 

High School Hubert H Humphrey Middle School
Middle School N/A
Elementary School Big Hollow Elementary School

  

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$1,250,000

4 Beds 2 / 1 Full / Half Baths 3,345 SQFT 0.31 Acres
Type: Single Family

3516 21ST AVENUE S
ST PETERSBURG, FL 33711

MLS#: TB8516916
Gina Brethorst
Gina Brethorst
The Real Estate Advantage
Agent
Phone: 612.207.0272
Office: 952.224.8800