Permit Requirements: Babylon vs Islip
How do permit requirements rules compare between Babylon, NY and Islip, NY?
Islip has fewer restrictions than Babylon.
Babylon, NY
Suffolk County
Fence permits are required in Babylon for all fences over 4 feet and for any pool enclosure. Permit cost is approximately 75 dollars plus plan review.
View full Babylon rules →Islip, NY
Suffolk County
The Town of Islip does not require a permit to install a fence as long as it complies with zoning and traffic-safety rules, but a permit is required before constructing any wall greater than 18 inches in height above average undisturbed grade.
View full Islip rules →Key Facts Comparison
| Fact | Babylon | Islip |
|---|---|---|
| Permit Trigger | Over 4 feet or pool | - |
| Cost | About 75 dollars | - |
| Plot Plan | Required | - |
| Pool Code | NY Res Code R326 | - |
| Historic Review | Babylon Village ARB | - |
| Fence permit | - | Not required if compliant with zoning/traffic safety |
| Wall permit threshold | - | Required for walls over 18 inches (Sec. 68-406F) |
| Wall setback | - | Min. 4 ft or equal to wall height, whichever is greater |
| Walls 18 in or less | - | No permit/setback unless directed by Town Engineer (Sec. 68-406G) |
Highlighted rows indicate differences between cities.
Babylon FAQ
Do I need a permit for a 3-foot picket fence in my front yard?
Generally no if under 4 feet, but check with Babylon Building Department. All pool enclosure fences require a permit regardless of height.
Who enforces this in Babylon?
Babylon code enforcement at (631) 957-3000 handles complaints.
Islip FAQ
Do I need a permit to install a fence in Islip?
No. The Town's Building Division FAQ states a permit is not required to install a fence, provided it complies with Town of Islip regulations, including zoning and traffic safety.
Do I need a permit for a retaining wall?
Yes if the wall is greater than 18 inches above average undisturbed grade. Section 68-406F requires a permit before construction; walls 18 inches or less generally need no permit (Sec. 68-406G).
Where can I confirm fence rules before building?
Even without a permit, your fence must meet the zoning and sight-line rules in Article XXX. Contact the Town of Islip Division of Building to confirm setbacks, height and corner sight-triangle requirements.
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