Premium 4.6-Acre Development Opportunity in Sackett lake area town of Thompson, near Monticello NY Located on scenic and quiet Mongaup Road, this exceptional 4.6-acre parcel of level land offers a rare opportunity for residential development in the heart of Sullivan County. Ideally positioned between Sackett Lake and Swinging Bridge Lake, the property features gently wooded terrain, mature trees, and a tranquil natural setting well suited for a your single-family retreat in a desirable and steadily growing area of Sullivan County. The usable, level topography provides excellent flexibility for builders and end users alike, minimizing site preparation while maximizing design potential. Surrounded by nature yet conveniently close to the region’s lakes, golf courses, resorts, dining, and year-round recreation, this location perfectly balances privacy with accessibility.
As the MLS and public records start to fill up, we'll list the details here.
Public record
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Vacant Land
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Sullivan County
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Last updated by owner on Oct 9, 2026.
Historical weather
Monticello, NY • 12701
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Sun exposure
99/ 100
Exceptional sunlight
Sunscore
This home ranks in the top 9% for direct sun exposure in Monticello. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
10.4 hrs
6.3 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 00 Mongaup Rd
We cannot show automated home-value estimates for this home.
Nearby homes have recently sold between $40,000 and $275,000.
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $40K to $275K.