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$3,599,999
15 Days On Site

7821 3RD AVENUE S
ST PETERSBURG, FL 33707

For Sale|Single Family Residence|Active
4
Beds
5
Total Baths
4
Full Baths
1
Partial Bath
3,850
SqFt
$935
/SqFt
2026
Built
Subdivision:
SOUTH CSWY ISLE 3RD ADD
County:
Pinellas

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7821 3RD AVENUE S7821 3RD AVENUE S7821 3RD AVENUE S7821 3RD AVENUE S
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Pre-Construction. To be built. Pre-Construction | To Be Built | Causeway Isles Waterfront Build your dream home on one of St. Petersburg’s most desirable open-water homesites in the heart of Causeway Isles. Located at 7821 3rd Ave S, this exceptional property offers over 100 feet of deep saltwater frontage with a protected yacht slip suitable for vessels up to 80 feet. Enjoy expansive water views, peaceful surroundings, and unforgettable sunset skies overlooking Sunset Park—perfectly capturing the essence of waterfront living. This prime location places you just minutes from downtown St. Pete, the beaches of Treasure Island, and direct access to the Intracoastal Waterway, making it ideal for both boating and everyday convenience. A new seawall installed in May 2025 adds long-term value and confidence as you plan your future residence. The lot comfortably supports a custom home in the 3,850+ square foot range, allowing for a thoughtfully designed layout that embraces indoor-outdoor living. A proposed concept features a 4-bedroom, 4.5-bath design with a private pool, outdoor kitchen, spacious covered lanai, and optional elevator. The architecture leans toward a modern coastal style, incorporating clean lines, natural light, and expansive glass to highlight the water views. Neo Homes offers a full turnkey design-build approach, including: Custom architecture and interior design High-end, curated finish selections Hurricane-rated construction built to Florida standards A streamlined, start-to-finish building experience This is an opportunity to create a personalized waterfront residence tailored to your lifestyle in a well-established boating community. If you’ve been searching for a premium waterfront homesite in St. Petersburg, this property is truly worth exploring. Note: Photos shown are from a previously completed home by Neo Homes and are intended to represent the quality, craftsmanship, and level of finishes available for this homesite.

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Listing Snapshot
Price 
$3,599,999
Days On Site 
15 Days
Bedrooms 
4
Inside Area (SqFt) 
3,850 sqft
Total Baths 
5
Full Baths 
4
Partial Baths 
1
Lot Size 
0.19 Acres
Year Built 
2026
MLS® Number 
TB8491647
Status 
Active
Property Tax 
$13,393.03
HOA/Condo/Coop Fees 
N/A
Sq Ft Source 
Builder
Friends & Family
Recent Activity
2 weeks agoListing updated with changes from the MLS®
2 weeks agoStatus changed to Active
2 weeks agoListing first seen on site
General Features
Acres 
0.19
Attached Garage 
Yes
Direction Faces 
Southeast
Garage 
Yes
Garage Spaces 
2
Levels 
Two
Number Of Stories 
1
Parking 
Attached
Property Condition 
New Construction
Property Sub Type 
Single Family Residence
Sewer 
Public Sewer
SqFt Total 
4000
Utilities 
Other
Water Source 
Public
Interior Features
Appliances 
CooktopDishwasherRangeRange HoodRefrigerator
Cooling 
Central Air
Flooring 
Hardwood
Furnished 
Unfurnished
Heating 
Central
Interior 
Open FloorplanWalk-In Closet(s)
Laundry Features 
Laundry Room
Bedroom 2 
Level - Second
Bedroom 3 
Level - Second
Bedroom 4 
Level - Second
Dining Room 
Level - First
Kitchen 
Level - First
Living Room 
Level - First
Master Bedroom 
Level - First
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Exterior Features
Construction Details 
BlockFrame
Exterior 
Outdoor KitchenDock
Lot Features 
Waterfront
Pool Features 
In GroundPrivate
Private Pool 
Yes
Roof 
Other
View 
Water
Waterfront 
Yes
Waterfront Features 
Canal Front
Waterview 
Water
Community Features
MLS Area 
33707 - St Pete/South Pasadena/Gulfport/St Pete Bch
Roads 
Asphalt
Township 
31
Listing courtesy of PHIL DESAUTELS P.A. (813) 629-7355



Listing information is provided by Participants of the Stellar MLS. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed. Properties displayed may be listed or sold by various participants in the MLS Copyright 2026, Stellar MLS.
Last checked: 2026-04-14 05:26 PM EDT

Neighborhood & Commute
Source: Walkscore
Disclosure: Community information and market data powered by Constellation Data Labs. Information is deemed reliable but not guaranteed.
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