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$3,599,999 Just Listed

  • For Sale
  • Active
  • Single Family
  • 4 Beds
  • 4 Full Baths
  • 1 Partial Bath
  • 3,850 Sq. Ft.
  • Updated 1 day ago
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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.

Full Property Details for 7821 3rd Ave S

General

  • Price: $3,599,999
  • Taxes: $13,393 (2025)
  • Status: Active
  • Type: Single Family
  • Source: MidFloridaRegionalMLS
  • MLS ID: TB8491647
  • Updated: 3/30/2026
  • Added to Site: 2 day(s) ago

Interior

  • Number of Rooms: 7
  • Interior Features: Ceiling Fan(s), Kitchen and Family Room Combination, Open Floorplan, Walk-In Closet(s)
  • Appliances: Cooktop, Dishwasher, Range, Range Hood, Refrigerator
  • Furnishings: Unfurnished
  • Flooring: Engineered Hardwood

Rooms

Bathrooms

  • Total Bathrooms: 5
  • Full Bathrooms: 4
  • Half Bathrooms: 1

Bedrooms

  • Total Bedrooms: 4

Other Rooms

  • Laundry: Laundry Room

Additional Information

  • Pool: Yes
  • Private Pool: Yes
  • Pool Description: In Ground

Exterior

  • Exterior Features: Irrigation System, Outdoor Kitchen

Parking

  • Garage: Yes
  • Attached garage: Yes
  • Garage Spaces: 2
  • Covered Spaces: 2

Location

  • Area: 33707 - St Pete/South Pasadena/Gulfport/St Pete Bch
  • County: Pinellas
  • Development Name: 33707 - St Pete/South Pasadena/Gulfport/St Pete Bch
  • Subdivision: SOUTH CSWY ISLE 3RD ADD
  • Driving 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.
  • Direction Faces: Southeast

Community

  • Community Name: 33707 - St Pete/South Pasadena/Gulfport/St Pete Bch

Heating & Cooling

  • Cooling Type: Central Air
  • Heating Type: Central

Utilities

  • Sewer: Public Sewer
  • Water: Public
  • Utility Description: Other

Structural Information

  • Approx Compl Date: 2027-02-28T05:00:00.000Z
  • Exterior Const.: Block, Wood Frame
  • Roof: Other
  • Stories/Levels: Two
  • Square Feet: 3,850
  • Sq. Ft. Source: Builder
  • Year Built: 2026

Lot Features

  • Lot Size (Acres): 0.19
  • Lot Size (Sq. Ft.): 8,459
  • Lot Size: 8459
  • Lot Dimensions: 87 x 100
  • Street/Road Desc.: Asphalt

Water Features

  • Water Front: Yes
  • Water Access: Yes
  • Water Access Desc: Freshwater Canal w/Lift to Saltwater Canal
  • Water Extras: Yes
  • Water Front Desc.: Freshwater Canal w/Lift to Saltwater Canal

Financial Considerations

  • Tax Amount: $13,393.03
  • Tax Year: 2025

Disclosures and Reports

  • Ownership: Fee Simple
  • Special Conditions: None
  • Legal Description: SOUTH CAUSEWAY ISLE 3RD ADD BLK 9, LOT 12
  • Flood Zone Info: AE
  • APN: 243115840420090120
  • Property ID: 243115840420090120
  • Block/Lot/Section: 9

Listed by Phil Desautels P.A.

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Listing agent

— 7821 3rd Ave S —

  • Phil Desautels P.A.

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 7821 3rd Ave S

School District:Pinellas County School District
NameGradesDistance
Azalea Elementary School
1680 74th St N, St. Petersburg, FL 33710
PK-51.5 mi
Azalea Middle School
7855 22nd Ave N, St. Petersburg, FL 33710
6-81.8 mi
Boca Ciega High School
924 58th Street South, Gulfport, FL 33707
9-122.2 mi
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 7821 3rd Ave S Get Price Alerts and Save Property

Date
Details
Price
Change
Source
3/30/2026
Listed
$3,599,999
355.12%
MLS
11/08/2024
Sold
$791,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 7821 3rd Ave S

Year
Property Taxes
Change
Tax Assessment
Change
2025
$13,393
185%
$672,350
138%
2024
$4,695
2%
$283,094
3%
2023
$4,614
2%
$274,849
7%
2021
$4,513
1%
$257,184
-3%
2022
$4,454
-1%
$264,900
4%
2021
$4,513
2%
$253,633
2%
2019
$4,431
1%
$247,931
2%
2018
$4,366
1%
$243,308
2%
2017
$4,321
1%
$238,304
2%
2016
$4,277
-1%
$233,403
1%
2015
$4,336
1%
$231,781
1%
2014
$4,312
1%
$229,941
1%
2013
$4,281
—
$226,543
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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Listed by Phil Desautels P.A.

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7821 3rd Avenue S, Saint Petersburg, FL 33707 (MLS# TB8491647) is a Single Family property with 4 bedrooms, 4 full bathrooms and 1 partial bathroom. 7821 3rd Avenue S is currently listed for $3,599,999 and was received on March 30, 2026. Want to learn more about 7821 3rd Avenue S? Do you have questions about finding other Single Family real estate for sale in Saint Petersburg? You can browse all Saint Petersburg real estate or contact a Coldwell Banker agent to request more information.

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