Syosset Public Library

Domania
http://www.domania.com Home sales listings and mortgage calculators; register for free for full-database access.

The Motley Fool-Home Price Check

http://fool.homepricecheck.com Look up home sales records; search by street, price range or single house.

Multiple Listing Service of Long Island

http://www.mlsli.com An inventory of homes for sale in Nassau, Suffolk and Queens; includes a mortgage calculator and buyer/seller tips.

Nassau County Property Reassessment Project
http://www.mynassauproperty.com/

National Association of Realtors

http://www.realtor.com This database of homes for sale nationwide is useful to the consumer and realtor.

Newsday-Real Estate

http://www.newsday.com/business/realestate Lists recent home sales for Queens, Nassau and Suffolk; contains school report cards by town; gives community profiles and property tax assessment.

Yahoo-Real Estate

http://list.realestate.yahoo.com Lists recent sale prices of homes, school information and comparable salaries by locations.