Listing provided courtesy of EXP REALTY LLCas Distributed by MLSGrid- MLS# MFRTB8516916MLS Provider

3516 21ST AVENUE SST PETERSBURG, FL 33711

Single Family · 4 Beds · 2 Full Baths · 1 Half Bath · 3,345 Sq. ft. | 0.31 Acres
$1,250,000 Active

3516 21ST AVENUE S Overview

Time on Site:
11 days
Visits:
0

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.

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3516 21ST AVENUE S Facts & Features

  • Type Single Family
  • Sq. ft. 3,345
  • Price/Sq.ft. $374
  • Lot 0.31 Acres

Details

General

Association/HOA

  • Association: No

Building Information

  • Builder Name: McDew Development
  • New Construction: Yes
  • Year Built: 2026

Location/Region

  • Country: US
  • County Or Parish: Pinellas
  • MLS Area Major: 33711 - St Pete/Gulfport
  • Subdivision Name: CHILDS PARK
  • Township: 31

Tax Information

  • Tax Annual Amount: 1958.62
  • Tax Year: 2025

General Information

  • Furnished: Unfurnished
  • Listing Terms: Cash,Conventional
  • Ownership: Fee Simple
  • Parcel Number: 27-31-16-15408-006-0030
  • Property Condition: Completed
  • Property Sub Type: Single Family Residence
  • Property Type: Residential
  • Senior Community: No
  • Special Listing Conditions: None

Interior

Parking Information

  • Garage Spaces: 3
  • Garage: Yes

Beds/Baths

  • Bathrooms Full: 2
  • Bathrooms Half: 1
  • Bathrooms Total: 3
  • Bedrooms Total: 4

Building Interior

  • Building Area Source: Builder
  • Building Area Total: 3730
  • Building Area Units: Square Feet

General Information

  • Appliances: Bar Fridge,Built-In Oven,Cooktop,Dishwasher,Disposal,Exhaust Fan,Microwave,Range Hood,Refrigerator,Tankless Water Heater,Wine Refrigerator
  • Cooling: Central Air
  • Fireplace: No
  • Flooring: Luxury Vinyl,Tile
  • Foundation Details: Slab
  • Heating: Central,Electric
  • Interior Features: Built-in Features,Ceiling Fans(s),Eat-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 Features: Electric Dryer Hookup,Laundry Room,Washer Hookup
  • Levels: Two
  • Living Area: 3345
  • Living Area Source: Builder
  • Living Area Units: Square Feet
  • Other Equipment: Irrigation Equipment,Private Entrance,Private Yard
  • Security Features: Secured Garage/Parking,Security Gate
  • Window Features: ENERGY STAR Qualified Windows,Insulated Windows,Storm Window(s)

Exterior

Parking Information

  • Parking Features: Alley Access,Assigned,Driveway,Garage Door Opener,Garage Faces Rear,Ground Level,Guest,Oversized,RV Access/Parking

Lot Information

  • Additional Parcels: No
  • Lot Features: Cleared,City Limits,Landscaped,Level,Oversized Lot,Private,Sidewalk,Paved
  • Lot Size Acres: 0.31
  • Lot Size Dimensions: 71x187
  • Lot Size Square Feet: 13321
  • Road Surface Type: Asphalt,Paved
  • Water Source: Public

Waterfront/View

  • View: City
  • Waterfront: No

Building Exterior/Construction

  • Architectural Style: Contemporary,Custom
  • Attached Garage: No
  • Construction Materials: Block,HardiPlank Type,Stucco
  • Direction Faces: North
  • Roof: Shingle

General Information

  • Carport Spaces: 6
  • Carport: Yes
  • Exterior Features: Balcony,Courtyard,Lighting,Private Entrance,Private Mailbox,Private Yard,Sliding Doors
  • Fencing: Masonry,Vinyl
  • Other Structures: Additional Single Family Home,Guest House
  • Pool Private: No
  • Sewer: Public Sewer
  • Utilities: BB/HS Internet Available,Cable Available,Electricity Connected,Public,Sewer Connected,Water Connected

Room Information

Room: Balcony/Porch/Lanai

  • Level: First
  • Dimensions: 12x13
  • Length: 13
  • Width: 12

Room: Bathroom 1

  • Level: First
  • Dimensions: 6x6
  • Length: 6
  • Width: 6
  • Features: Exhaust Fan,Stone Counters,Tall Countertops

Room: Dining Room

  • Level: First
  • Dimensions: 23x14
  • Length: 14
  • Width: 23

Room: Kitchen

  • Level: First
  • Dimensions: 23x14
  • Length: 14
  • Width: 23
  • Features: Bar,Breakfast Bar,Closet Pantry,Kitchen Island,Stone Counters

Room: Laundry

  • Level: First
  • Dimensions: 6x12
  • Length: 12
  • Width: 6

Room: Living Room

  • Level: First
  • Dimensions: 23x11
  • Length: 11
  • Width: 23

Room: Office

  • Level: First
  • Dimensions: 13x10
  • Length: 10
  • Width: 13
  • Features: Ceiling Fan(s)

Room: Primary Bathroom

  • Level: First
  • Dimensions: 10x12
  • Length: 12
  • Width: 10
  • Features: Double Vanity,En Suite Bathroom,Exhaust Fan,Makeup/Vanity Space,Multiple Shower Heads,Rain Shower Head,Stone Counters,Tall Countertops,Tub with Separate Shower Stall,Water Closet/Priv Toilet

Room: Primary Bedroom

  • Level: First
  • Dimensions: 14x20
  • Length: 20
  • Width: 14
  • Features: Ceiling Fan(s),En Suite Bathroom

Room: Bedroom 2

  • Level: Second
  • Dimensions: 11x12
  • Length: 12
  • Width: 11
  • Features: Ceiling Fan(s)

Room: Bedroom 3

  • Level: Second
  • Dimensions: 12x13
  • Length: 13
  • Width: 12
  • Features: Ceiling Fan(s)

Room: Bedroom 3

  • Level: Second
  • Dimensions: 6x9
  • Length: 9
  • Width: 6
  • Features: Double Vanity,Exhaust Fan,Jack & Jill Bathroom,Tall Countertops,Tub With Shower

Room: Bedroom 4

  • Level: Second
  • Dimensions: 16x13
  • Length: 13
  • Width: 16
  • Features: Ceiling Fan(s)

Room: Great Room

  • Level: Second
  • Dimensions: 25x24
  • Length: 24
  • Width: 25
  • Features: Built-In Shelving,Ceiling Fan(s),Wet Bar

3516 21ST AVENUE S Neighborhood

Community

33711 (ST PETERSBURG) Demographics

39
Median Age
3,307
Population Density (per sq. mile)
34%
College Educated
$52,902
Estimated Median Income
3,898
Estimated Total Home Owners
2,512
Estimated Total Renters
61% / 39%
Estimated Owner / Renter Divide
3
Estimated Average Household Size
Community data courtesy of LiveBy, Inc.

Schools

School data unavailable, School data courtesy of LiveBy, Inc. School ratings are based on a scale of 1-5, with 5 being the highest rating and 1 being the lowest rating.

3516 21ST AVENUE S Monthly Cost

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* All calculations are estimates and provided by Reliance Network, for informational purposes only. Actual amounts may vary. ** Assumes 6.50% APR, 20% down payment, and conventional 30-year fixed rate first mortgage. Rates cited are for instructional purposes only; current rates are subject to change at any time without notice. You should not make any decisions based simply on the information provided. Additional required amounts such as taxes, insurance, homeowner association dues, assessments, mortgage insurance premiums, flood insurance or other such required payments should also be considered. Contact your mortgage company for current rates and additional information. Any mortgage broker or insurance agent that may appear is independent and is not affiliated with, endorsed by, or provided by the MLS.

3516 21ST AVENUE S Market Data

Based on the last 30 days in this zip code

$598,327
Average List Price
$398
Average Price per Square Foot
23
Properties Sold
136
Average Days on Market
234
Properties for Sale
Calculations provided by Reliance Network

3516 21ST AVENUE S History

Date Event Value Agent
6/19/2026Source: My Florida Regional MLS Status Change
Active
6/9/2026Source: My Florida Regional MLS Added to Database
June 09, 2026