Property Description
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.
Features
Swimming Pool:
In Ground, Lighting, Gunite, Salt Water
Heating System:
Central
Cooling System:
Central Air
Patio:
Covered, Rear Porch
Architectural Style:
Contemporary, Elevated
Exterior Features:
Rain Gutters, Private Yard, Private Entrance
Flooring:
Hardwood
Interior Features:
Ceiling Fans(s), Elevator, Open Floorplan, Walk-In Closet(s), Eat-in Kitchen, Kitchen/Family Room Combo, High Ceilings, Solid Surface Counters
Laundry Features:
Inside, Laundry Room
Pool Private Yn:
1
Sewer:
Public Sewer
Utilities:
Cable Available, Electricity Connected, Phone Available, Sewer Connected, Water Connected
Waterfront Features:
Bay/Harbor, Intracoastal Waterway
Appliances
Appliances:
Range, Dishwasher, Refrigerator, Microwave, Disposal, Range Hood, Bar Fridge, Exhaust Fan, Wine Refrigerator, Tankless Water Heater
Address Map
Country:
US
State:
FL
County:
Pinellas
City:
St Petersburg
Subdivision:
SOUTH CSWY ISLE 3RD ADD
Zipcode:
33707
Street:
3RD
Street Number:
7821
Street Suffix:
AVENUE
Longitude:
W83° 15' 19.7''
Latitude:
N27° 45' 59.9''
Direction Faces:
South
Directions:
I-275 South to St. Petersburg Take Exit 22 (5th AVE North) to 66th St. Turn left South on 66th Street to Central Avenue. Turn Right West on Central Ave towards the beaches. Turn South (left) on 79th ST S. Turn left East on 3rd AVE S. End of street on left.
Mls Area Major:
33707 - St Pete/South Pasadena/Gulfport/St Pete Bch
Street Dir Suffix:
S
Neighborhood
Elementary School:
Azalea Elementary-PN
High School:
Boca Ciega High-PN
Middle School:
Azalea Middle-PN
Additional Information
Water Source:
Public
Water Body Name:
BAY HARBOR & INTRACOASTAL
Virtual Tour:
https://www.propertypanorama.com/instaview/stellar/TB8476329
On Market Date:
2026-02-17
Lot Features:
Paved, Cul-De-Sac, FloodZone, Landscaped, City Limits
Levels:
Two
Garage:
3
Foundation Details:
Stem Wall
Construction Materials:
Block, Frame
Community Features:
Street Lights
Building Size:
4000
Attached Garage Yn:
1
Financial
Association Yn:
1
Tax Annual Amount:
13393
Listing Information
List Agent Mls Id:
260039790
List Office Mls Id:
260031369
Mls Status:
Canceled
Modification Timestamp:
2026-03-30T17:52:14Z
Originating System Name:
Stellar
Special Listing Conditions:
None
Status Change Timestamp:
2026-03-30T16:19:45Z

Residential For Sale

7821 3rd Ave S, St Petersburg, Florida 33707

4 Bedrooms
5 Bathrooms
3,850 Sqft
$3,600,000
Listing ID #TB8476329
Basic Details
Property Type :
Residential
Listing Type :
For Sale
Listing ID :
TB8476329
Price :
$3,600,000
View :
Water
Bedrooms :
4
Bathrooms :
5
Half Bathrooms :
1
Square Footage :
3,850 Sqft
Year Built :
1958
Lot Area :
0.19 Acre
Full Bathrooms :
4
New Construction Yn :
1
Property Sub Type :
Single Family Residence
Roof:
Membrane
Waterfront Yn :
1
Agent info
Contact Agent

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