Islip, NY Historic Preservation: Historic-Cultural Monuments (2026)
Key Facts
- Governing article
- Art. XLI, adopted March 4, 1975
- State authority
- General Municipal Law § 96-a
- Review body
- Town of Islip Planning Board
- Advisory body
- Historical Landmark Preservation Committee
- Required before material change
- Certificate of appropriateness
- Penalty
- Up to $2,000 fine, 15 days jail
Summary
Islip protects historically or aesthetically significant sites through a Planned Landmark Preservation Overlay District under Town Code Article XLI, first adopted in 1975. Any property designated a 'landmark' under § 68-448 needs a Planning Board certificate of appropriateness before an owner can make a material change of use or appearance, per § 68-451A(2).
LANDMARK: Any improvement or landscape feature which has a special character or special historical or aesthetic interest or value as part of the development, scenic or cultural heritage of the Town, state or nation and which has been designated as a landmark in connection with the establishment of a Planned Landmark Preservation Overlay District in accordance with this article. ... Material change of use or appearance. Application shall be made to the Town of Islip Planning Board for a certificate of appropriateness indicating that the proposed material change of use or appearance conforms to both the regulations of the underlying districts and to the standards of development... After a public hearing, such a certification, if approved, shall authorize the issuance of an appropriate building permit in conformance with the findings of the Planning Board. No work of any kind shall be undertaken by the applicant prior to the issuance of such a permit.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4826765; v112 updated 2026-02-24; through 02-24-2026).
Full Breakdown
Article XLI, adopted March 4, 1975 under General Municipal Law § 96-a, lets the Town Board designate Planned Landmark Preservation Overlay Districts around 'places, districts, sites, scenic views, buildings, structures, works of art and other objects' with special historic, aesthetic or cultural value, per the legislative findings at § 68-447. A district begins with the Planning Board investigating and holding a public hearing, often on referral from the Town of Islip Historical Landmark Preservation Committee, then recommending that the Town Board amend the Amended Zoning Map under § 68-449, complete with a description of the area's significance, its boundaries and applicable development standards.
Once a district exists, § 68-448 defines a 'landmark' as any designated improvement or landscape feature, and § 68-450 makes overlay rules control whenever they conflict with the underlying zoning district for any building permit, exterior alteration, land-contour work or subdivision. Owners seeking a 'material change of use or appearance', demolition, exterior reconstruction, excavation, new advertising or a lot subdivision, must obtain a certificate of appropriateness from the Planning Board after a public hearing under § 68-451A(2); only after that certificate issues can the Commissioner of Planning and Development grant a building permit.
Routine upkeep is exempt as 'ordinary repairs and maintenance' but still needs the Commissioner's written approval before work starts under § 68-451A(1). Owners who can show a landmark designation blocks a reasonable economic return may seek tax abatement or a transfer of development rights.
Violations & Fines
Starting work on a designated landmark without a certificate of appropriateness, or without the Commissioner's written approval for ordinary repairs, is a Chapter 68 zoning violation punishable under § 68-421 by a fine of up to $2,000, imprisonment up to 15 days, or both, with each day of unauthorized work a separate offense.
Frequently Asked Questions
What makes a property a 'landmark' in Islip?
Do I need approval to renovate a designated landmark?
What if landmark status stops me from earning a fair return on my property?
Sources & Official References
Other rules in Islip
New York rules heatmap·Compare Islip to another location·View the New York historic preservation overview
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How other cities in Suffolk County handle historic-cultural monuments.