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700 Tar Island offers private island living without the usual complications. Located approximately 10 minutes by boat from Huck's Marina in Rockport, this fully furnished seasonal retreat sits on more than 1.4 acres with approximately 318 feet of St. Lawrence River frontage, protected docking, clear water and a shallow sandy shoreline. The property has been prepared to give buyers greater confidence, with pre-listing home inspection, WETT, water and septic documentation available. Extensive inclusions also make the transition to island ownership easier, including most furnishings, a pontoon boat, golf cart, lawn equipment, tools & more, subject to the full inclusion and exclusion list in Schedule B. The main cottage features warm wood finishes, vaulted ceilings, expansive river-facing windows and an open-concept layout designed around the waterfront setting. There are 3+1 bedrooms and 2 bathrooms, including a lower-level guest suite with a kitchenette and private entrance. The flexible layout provides comfortable space for family, overnight guests or multigenerational use. The shoreline is one of the property's defining features. Protected docking, a gentle sandy entry and approximately 318 feet of frontage create an inviting setting for swimming, boating, paddling and fishing. The generous lot also offers space to gather, relax and enjoy privacy along the river. Practical improvements include heat pumps with air conditioning, a woodstove, baseboard heating, a Generac generator, a metal roof, internet availability and an art studio bunkie that can also provide guest overflow space. From mornings on the dock to afternoons exploring the Thousand Islands & evenings beside the water, this is a well-equipped island property designed to be enjoyed from the day you arrive. For buyers seeking a furnished St. Lawrence River retreat close to Rockport, 700 Tar Island offers an appealing combination of privacy, usable shoreline, thoughtful improvements and turnkey convenience.
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Property details
- Property type
- Detached
- Style
- Other
- Approx. age (yrs)
- 51-99
- Total rooms
- 8
- Lot size
- 300 × 231.35 ft
- Property taxes
- $5,110 (2025)
- Occupancy
- Flexible
- Days on market
- 4
- Status
- Active
- MLS®
Property history
Location
Open in Google MapsCourtesy of CENTURY 21 HERITAGE GROUP LTD., BROKERAGE.
Listing data last updated: Jun 26, 2026, 8:17 p.m. EDT via TRREB IDX.
First listed: Jun 24, 2026, 4:44 p.m. EDT.