Yonkers NY deck permit rules
Yonkers DHB requires a building permit for deck construction. Apply through City Squared at yonkersny.gov/219 (use Chrome). HIC license required — Consumer Protection Bureau: 914-377-3000. Zoning setback verification before design is critical in Yonkers: the city's dense hillside lot patterns mean many properties have tight rear and side yard constraints. Contact Plan Examiners at 914-377-6506 before engaging a designer.
Storm Water Management (SWM) submissions are frequently required alongside deck permits for Yonkers hillside properties — hillside decks can alter drainage patterns and affect neighbouring properties. Contact DHB at 914-377-6500 to confirm whether an SWM submission is required for your specific address and deck scope. SWM review adds time to the permit process. South Westchester frost depth is approximately 36 inches — posts should be set in concrete at 40–48 inches depth. 36-inch minimum guardrail at 30 or more inches above grade. Call 811 before any footing excavation.
Three Yonkers deck scenarios
| Factor | What it means for your project |
|---|---|
| Storm Water Management (frequent in Yonkers) | Hillside decks often trigger SWM submission. Contact DHB at 914-377-6500 to confirm. |
| Zoning setbacks — confirm before design | Call Plan Examiners 914-377-6506. |
| ~36-inch frost depth (south Westchester) | Posts 40–48 inches in concrete. |
| 36-inch guardrail (NY residential) | At 30+ inches above grade. |
| HIC license — Consumer Protection Bureau | 914-377-3000. |
Main: 914-377-6500 | Plan Examiners: 914-377-6506, 6522, 6507, 6532
City Squared portal: yonkersny.gov/219 (use Chrome)
Plumbing: 914-377-6566 | Electrical: 914-377-6502
Consumer Protection Bureau (HIC): 914-377-3000
Con Edison (gas & electric): 1-800-752-6633 | coned.com
Common questions about Yonkers, NY deck permits
What is a Storm Water Management submission and when is it required for a Yonkers deck?
SWM submissions are required when construction may alter drainage patterns on hillside properties. Contact DHB at 914-377-6500 to confirm whether an SWM submission is required for your address and deck scope before finalising the design.
How deep must deck footings be in Yonkers NY?
South Westchester frost depth is approximately 36 inches — posts should be set in concrete at 40–48 inches depth. Call 811 at least 3 business days before any footing excavation.
Information based on Yonkers, NY official sources and applicable state/local building codes as of April 2026. Codes and fees change — verify current requirements before starting work. For a project-specific report, use our permit research tool.