7821 3RD AVENUE, ST PETERSBURG, FL 33707
For Sale1 / 57

$3,600,000

4 bd·4.5 ba·3,850 sqft

7821 3RD AVENUE, ST PETERSBURG, FL 33707

MLS# TB8476329

Type

House

Year Built

1958

Lot Size

0.19 acres

$/sqft

$935

Days on Market

30

Annual Tax

$13,393

PoolWaterfrontWater View

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.

30 days on Horizon Palm · Listing office: COASTAL PROPERTIES GROUP

Facts & Features

Bedrooms: 4
Bathrooms: 4.5
Interior Area: 3,850 sqft
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
Fireplace: No
Garage Spaces: 3
Exterior Features: Private Entrance, Private Yard, Rain Gutters
Pool: Yes
Waterfront: Yes
Lot Size: 0.19 acres
Parcel #: 243115840420090120
Property Type: House
Construction: Block,Wood Frame (FSC Certified)
Foundation: Stem Wall
Roof: Membrane
Architectural Style: Contemporary,Elevated
Year Built: 1958
New Construction: Yes
Subdivision: SOUTH CSWY ISLE 3RD ADD
HOA: Yes
Utilities: Cable Available, Electricity Connected, Phone Available, Sewer Connected, Street Lights, Water Connected
Price/sqft: $935
Annual Tax: $13,393
Tax Year: 2025
Days on Market: 30
Listing Agent: Debbie McGinty, LLC
Listing Office: COASTAL PROPERTIES GROUP
MLS #: TB8476329

Price & Listing History

DateEventPrice
+058100-05-27For Sale$3,600,000($935/sqft)

Payment Calculator

$20,996/mo

Principal & Interest$18,680
Property Taxes$1,116
Home Insurance$1,200

This calculator is for informational purposes only. Actual payments may vary.

Neighborhood

ST PETERSBURG, FLPinellas County
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Listing information is deemed reliable but not guaranteed. All measurements and data should be independently verified. IDX information is provided exclusively for consumers' personal, non-commercial use. © 2026 Stellar MLS / BeachesMLS. All rights reserved. Last updated: 3/20/2026.