Advertise a Duplex / Triplex, and other West Islip property By Owner for sale:

Many West Islip duplexes are purchased for renting. A West Islip duplex can be described as two units under one roof separated by a community wall. There may be a shared driveway. Triplexes and Fourplexes can be similar in design.

Woodbury - Woodbury for Sale by owner (Nassau)
Stony Brook - Stony Brook for Sale by owner (Suffolk)
Selden - Selden Byowner (Suffolk)
Rocky Point - Rocky Point Byowner (Suffolk)
Oyster Bay - Oyster Bay FSBO (Nassau)
Peconic - Peconic homes byowner (Suffolk)
New Suffolk - New Suffolk houses for sale by owner (Suffolk)