Hamptons Realty Group
- Network of brokers offering homes, land, and rentals in Suffolk County. Includes listings, agent profiles, news, and location information.
- http://www.hrg.com

Town & Country Real Estate of the East End LLC
- Offering residential, commercial, vacant, and rental properties. Includes listings, market reports, and contacts. Offices in East Hampton, Westhampton Beach, and Mattituck.
- http://townandcountryrealestate.biz/

Brown Harris Stevens
- Brokerage firm offering residential properties in the North Fork and Hamptons areas. Offices in Greenport and Cutchogue.
- http://www.bhshamptons.com/

Meadow Crest Homes
- Building and developing residential and commercial real estate on Long Island's east end.
- http://www.meadowcresthomes.com

Hamptons Real Estate Online
- Featuring homes, land and summer rentals from all the major brokerages, serving the Hamptons and the North Fork of Long Island.
- http://www.hreo.com/

CENTURY 21 Princeton Properties
- Three Sulfolk County locations.
- http://www.c21princetonproperties.com/

Allan Schneider Associates
- Specializing in luxury properties, land and summer rentals, covering regions of East Hampton, Amagansett, Bridgehampton, Southampton, Sagaponack, Sag Harbor, Shelter Island.
- http://www.allanschneider.com/

Joseph Schmitt
- Home inspection by a professional structural engineer. Commercial building inspections, structural design and consultation.
- http://www.schmittengineering.com/

Rustic Realty - Century 21
- Local information, property listings, and property management services. Offices in Coram, Miller Place, Shirley/Mastic, and Southampton.
- http://www.century21-rustic.com/

Albertson Realty - Century 21
- Handles properties on the North Fork of Long Island. Includes land, new construction, and commercial listings. Offices in Southold, Jamesport, Cutchogue, and Greenport.
- http://www.century21albertson.com/