7821 3rd Avenue S, St Petersburg, FL, 33707For Sale
$3,600,000
4beds5.00baths3850sqft

7821 3rd Avenue S, St Petersburg, FL, 33707

MLS#: TB8476329
Single Family Residence
Built in 1958
0.1900 acre lot
$935/sqft
22 days on market
$13,393/yr tax

What's special

Pre-Construction. To be built. Pre-Construction - To Be Built - Waterfront Opportunity in Causeway Isles- An exceptional opportunity awaits in coveted Causeway Isles. Perfectly positioned between vibrant St. Petersburg and the sugar-sand beaches of Treasure Island, this prime open-water lot is ready for your custom dream home. Enjoy a sought-after northeast exposure overlooking scenic Sunset Park and a tranquil, protected bay with 103 feet of waterfront frontage. The brand-new seawall (May 2025) provides peace of mind and a strong foundation for what’s to come. This expansive homesite can easily accommodate a luxury residence of approximately 3,850 square feet, complete with a private pool, outdoor kitchen, and covered flex space designed for effortless indoor-outdoor living. The featured concept showcases a four-bedroom, 4.5-bath custom home thoughtfully designed to maximize water views and natural light. Blending clean modern architecture with curated touches of color, texture, and glass, the design captures the essence of refined waterfront living. The result is a home that feels both elevated and inviting—ideal for everything from relaxed weekend brunches to elegant evenings under the stars. Crafted by Neo Homes, the build will include premium finishes, designer selections, hurricane-rated construction, and a true white-glove experience from start to finish. If you’re considering building your waterfront dream home, we would love to connect and are always available for a friendly conversation. As neighborhood residents, we’re passionate about sharing what makes this boating community so special. This is a rare opportunity to create a legacy waterfront estate in one of St. Petersburg’s most desirable enclaves—where luxury, location, and lifestyle meet. Neo Homes is the builder. Note: Photos are from a recently completed home by the builder and are representative of the quality, architectural style, and level of finishes available for this homesite.

22 days on Horizon Palm

Listing office: COASTAL PROPERTIES GROUP · MLS#: TB8476329


Map

7821 3rd Avenue S, St Petersburg, FL, 33707


Facts & features

Bedrooms & bathrooms

Bedrooms: 4
Bathrooms: 5.00

Heating

Heating: Central

Cooling

Cooling: Central Air

Appliances

Appliances: Bar Fridge, Dishwasher, Disposal, Exhaust Fan, Microwave, Range, Range Hood, Refrigerator, Tankless Water Heater, Wine Refrigerator

Features

Interior features: Ceiling Fan(s), Eating Space In Kitchen, Elevator, High Ceilings, Kitchen/Family Room Combo, Open Floorplan, Solid Surface Counters, Walk-In Closet(s)
Flooring: Engineered Hardwood
Laundry: Inside, Laundry Room

Interior area

Total interior livable area: 3850 sqft

Room dimensions

Kitchen (First)
Living Room (First)
Primary Bedroom (First)

Parking

Garage spaces: 3.00

Features

View: Water
Exterior features: Private Entrance, Private Yard, Rain Gutters
Patio & porch: Covered, Rear Porch
Pool: Yes
Pool features: Gunite, In Ground, Lighting, Salt Water
Spa: Yes
Waterfront: Yes
Waterfront features: Bay/Harbor, Intracoastal Waterway

Lot

Lot size: 0.1900 Acres
Lot features: Cul-De-Sac, Flood Zone, City Lot, Landscaped

Details

Parcel number: 243115840420090120

Type & style

Home type: Single Family Residence

Materials

Construction materials: Block, Wood Frame (FSC Certified)
Foundation: Stem Wall
Roof: Membrane

Condition

New construction: Yes
Year built: 1958

Community

Subdivision: South Cswy Isle 3rd Add

HOA

HOA: Yes

Utilities

Utilities: Cable Available, Electricity Connected, Phone Available, Sewer Connected, Street Lights, Water Connected
Sewer: Public Sewer

Details

Price/sqft: $935
Annual taxes: $13, 393 (2025)
Date on market: 02/17/26
Days on market: 22
Listing agent: Debbie Mc Ginty, LLC
Listing office: COASTAL PROPERTIES GROUP
MLS ID: TB8476329

Price history

For Sale

02/17/26 · COASTAL PROPERTIES GROUP

$3,600,000

$935/sqft

Listed

02/17/26 · COASTAL PROPERTIES GROUP

$3,600,000

$935/sqft$1

Off Market

01/07/26 · PHIL DESAUTELS P.A.

$3,599,999

$935/sqft

Listed

01/07/26 · PHIL DESAUTELS P.A.

$3,599,999

$935/sqft$2,808,999

Sold

11/08/24 · COMPASS FLORIDA LLC

$791,000

$205/sqft$109,000

Listed

10/17/24 · COMPASS FLORIDA LLC

$900,000

$234/sqft

Payment calculator

$150/mo
Principal & interest
$0
Property taxes
$0
Home insurance
$150

This is an estimate based on a 30-year Conventional mortgage at 6.75% APR. Actual rates and payments may vary. Contact a lender for exact quotes.


St Petersburg

St Petersburg, FLPinellas County33707
See more homes in St Petersburg

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StellarMLS / Beaches MLS is the source of this information via Internet Data Exchange Program. All listing information is deemed reliable but not guaranteed and should be independently verified through personal inspection by appropriate professionals. Listings displayed on this website may be subject to prior sale or removal from sale. Availability of any listing should always be independently verified. Listing information is provided for consumer personal, non-commercial use, solely to identify potential properties for potential purchase. All other use is strictly prohibited and may violate relevant federal and state law. Data last updated on 2026-03-30 at 2:03 pm

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