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USASCSt. Helena IslandTbd Blackwall Island
Listing image | Image 1

TBD Is, Saint Helena Island, SC

House

For Sale

Listed price in listed location currency (USD).
$2,900,000

000

MLS® 504838

Overview

Key Facts

Type 
Levels Land
Size -
Garage 
Taxes 
Days Active 224
Lot Size 19.78 Acres
Approx. Age 
MLS® Number 504838

Property Address: TBD Blackwall Island, St Helena Island, SC, 29920

Average square foot calculated using Size range provided by listing agent.

Description

Rooted in the Lowcountry tradition of life on the water, Blackwall Island is a rare private-island offering distinguished by its scale, elevation, accessibility, and remarkable potential. Nearly 20 acres of usable, high-and-dry land rise above the surrounding marsh, providing exceptional elevation and a compelling foundation for residential construction, recreational enjoyment, or the creation of a private family compound.The island offers multiple possibilities for thoughtfully positioned homesites, with opportunities to capture expansive marsh, river, and sunset views while preserving privacy and the property's natural beauty. Current zoning and development possibilities may support a primary residence, guest accommodations, recreational structures, and related improvements, subject to applicable governmental approvals, permitting, and buyer verification. Proposed home and construction plans are forthcoming, offering additional insight into the island's buildability and architectural potential.A commercial-grade deep-water dock provides direct boating access to the Intracoastal Waterway and nearby Atlantic Ocean, placing Beaufort, Charleston, Savannah, and the surrounding Sea Islands within convenient reach. The substantial dock also enhances access for future construction, materials, equipment, and day-to-day transportation between the mainland and island.Mainland parcels at 16 and 42 Cusabo Drive are included in the sale along with community dock access, creating a valuable land-based connection for parking, staging, storage, and seamless dock-to-dock access. Together, the island, deep-water infrastructure, elevated acreage, and mainland access offer the rare ability to balance true seclusion with practical ownership and development considerations.Whether envisioned as an extraordinary private residence, a multigenerational legacy compound, or a recreational coastal retreat, Blackwall Island represents an increasingly rare opportunity defined by usable acreage, deep-water access, privacy, and enduring Lowcountry distinction. Seller financing is available. Buyers should independently verify zoning, permitted uses, acreage, elevation, construction access, building requirements, and all development possibilities.
MLS® Number504838
Laundry Level
Central VacNo
FireplaceNo
Acreage
Exterior
Garage
Approx. Age
Basement
Driveway
Garage Spaces
Heat
A/C

Extras

Price History

Last Sold Price

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Appreciation

--

Avg. Days Listed

226 days

Today, For Sale for $2,900,000

For Sale · 223 days

$2,900,000

MLS® 504838

7 months ago

Not Sold Yet

February 2026, For Sale for $2,900,000

For Sale · 223 days

$2,900,000

MLS® 504838

7 months ago

Not Sold Yet

  • Feb 15, 2026, For Sale for $2,900,000

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