Advertise a Duplex / Triplex, and other Mastic Beach property By Owner for sale:

Many Mastic Beach duplexes are purchased for renting. A Mastic Beach 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.

Middle Island - Middle Island for Sale by owner (Suffolk)
Laurel - Laurel for Sale by owner (Suffolk)
Eastport - Eastport Byowner (Suffolk)
Center Moriches - Center Moriches Byowner (Suffolk)
Riverhead - Riverhead FSBO (Suffolk)
Austerlitz - Austerlitz homes byowner (Columbia)
Athens - Athens houses for sale by owner (Greene)