Skip to content
New York State 211 home page

ASSESSOR | ASSESSOR

40 Nassau Avenue, Islip, NY 11751

Eligibility

Agency prefers that client call for details.

Hours

Agency prefers that client call for details.

631-224-5380
Voice·

Other - Constituent services

631-595-3500
Voice·

Main

631-224-5300
Voice·

Emergency - Public safety and after hours emergencies

631-224-5572
Fax·

Fax

631-224-5583
Fax·

Fax

631-224-5397
Voice·

TDD

631-224-5585
Voice·

Main

Application process

Agency prefers that client call for details.

Fees

Agency prefers that client call for details.

Service area

Suffolk County, NY

Maintains a computerized annual assessment roll of town properties. Transfers ownership and assesses improvements of real property. Reviews applications for all real property tax exemptions.

Data provided by

211 Hudsson Valley / ADK

Providing organization

TOWN OF ISLIP

Acts as the local governing body for the Town of Islip.

ASSESSOR | ASSESSOR