Real Property Tax Service Agency

Contact Us

300 Center Drive
Riverhead, NY 11901
(631) 852-1551
Fax (631) 852-1566
email: Penny Wells LaValle



Real Property Tax Service Agency

Penny Wells Lavalle

Home of
AREIS (Advanced Real Estate Information System) on the Internet
For a trial subscription or subscriber assistance with
AREIS on the Internet
contact Larry at (631) 852-1550 or email  


9:00 – 5:00 - Monday – Friday  

Click on one of the following underlined words and you will be directed to the numerous Real Property Tax Service Agency services and products. Most of the services provided by the Agency are at its Riverhead location where there is an owner index and tax map information with a pleasant staff to assist you on your quest.  The Tax Map Division has the responsibility and is the sole authority responsible for creating and maintaining the tax maps of Suffolk County.  Verification is a procedure that helps to maintain the most current information on each tax map parcel and is required by law prior to recording of many documents. 

Find information regarding Real Property Tax Service Agency's Land Information System (LIS) and AREIS ON THE INTERNET . At these sites you will learn how to subscribe to the hardcopy tax map albums or Real Property’s Internet subscription.