Landscaping Rules in Islip, NY (2026)
8 verified landscaping rules for Islip, New York, sourced directly from the municipal code and official government pages.
Verified from official government sources
Grass Height Limits
The Property Maintenance Code of New York State, which the Town of Islip enforces and mirrors in Town Code Chapter 6A, requires developed areas of a premises used by occupants or the public to be kept free from weeds (including grasses) over 10 inches (254 mm) tall. Noxious weeds are prohibited outright.
Grass and weeds over 10 inches prohibited
Some RestrictionsProperty Maintenance Code of New York State (2020), Section 302.4 (Weeds)
302.4 Weeds. Except as provided for in statute, local law, ordinance, or other regulations, all developed areas of a premises that are intended to be used by building occupants or the public shall be maintained free from weeds in excess of 10 inches (254 mm). Noxious weeds shall be prohibited.
Tree Trimming
Town of Islip Code Chapter 57 (Trees) bars anyone from cutting, damaging, or removing any tree on public or private property without the prior written consent of the owner. Separately, clearing land of trees and brush requires a Town land-clearing permit under the Subdivision and Land Development Regulations.
No tree cutting without owner consent; land-clearing permit
Heavy RestrictionsTown of Islip Code Chapter 57 (Trees)
No person, firm, association, corporation or partnership shall cut, damage, carve, dig or remove any tree, whether living or not living, standing or downed on public or private property without the prior written consent of the owner of said property.
Tree Removal & Heritage Trees
Removing a street tree in Islip requires a DPW permit and replacement; private-property tree removal is largely unregulated except in Pine Barrens Core areas and wetland buffers where NYSDEC and Pine Barrens Commission approvals apply.
Landscaping: Tree Removal
Some RestrictionsWeed Ordinances
New York State Property Maintenance Code Section 302.4, enforced in Islip and restated in Town Code Section 6A-20, prohibits weeds and plant growth over 10 inches and bans all noxious weeds. The Town defines weeds as grasses, annual plants, and vegetation other than trees or shrubs, excluding cultivated gardens.
Weeds and noxious plant growth must be removed
Some RestrictionsProperty Maintenance Code of New York State (2020), Section 302.4 (Weeds); restated at Town of Islip Code Sec. 6A-20
302.4 Weeds. Except as provided for in statute, local law, ordinance, or other regulations, all developed areas of a premises that are intended to be used by building occupants or the public shall be maintained free from weeds in excess of 10 inches (254 mm). Noxious weeds shall be prohibited.
Water Restrictions
Islip residents are served by the Suffolk County Water Authority (SCWA), which enforces a year-round odd/even lawn-watering schedule and bans automatic irrigation between 10 a.m. and 4 p.m. New York State imposes no mandatory statewide restriction under a Drought Watch; the SCWA conservation directive is the binding local rule.
Odd/even lawn watering and midday irrigation ban
Some RestrictionsNYSDEC, Drought Watch water-use recommendations (Nov. 2024)
Under a Drought Watch, no mandatory restrictions are in place. New Yorkers are encouraged to voluntarily reduce outdoor water use: water lawns only when necessary, choose watering methods that avoid waste, and water in the early morning to reduce evaporation; use a broom, not a hose, to clean driveways and sidewalks; and fix leaking pipes, hoses, and faucets.
Rainwater Harvesting
Rainwater harvesting for outdoor irrigation is legal and encouraged in Islip. No permit is needed for rain barrels under 100 gallons; cisterns that connect to plumbing require a building permit and backflow prevention per NY Plumbing Code.
Landscaping: Rainwater Harvesting
Few RestrictionsNative Plants
Islip encourages native Long Island plantings such as pitch pine, bayberry, beach plum, and little bluestem. No local mandate exists, but state and county programs offer incentives for replacing turf with native species.
Landscaping: Native Plants
Few RestrictionsArtificial Turf
Artificial turf is allowed on Islip private property subject to building-permit review when installed over 500 sq ft or tied to drainage systems. Front-yard installations must comply with stormwater and impervious-cover limits in Chapter 68A.
Landscaping: Artificial Turf
Some RestrictionsLooking for Suffolk County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Islip city rules.
Landscaping Rules in Suffolk County →