Local project notes · 01
Use parcel-specific information
The NYC flood hazard map can help homeowners understand mapped flood exposure, but it is not a survey and does not describe every site's finished grades. For exterior concrete, discuss thresholds, drainage destinations and how the work meets existing paving. If a foundation or structural change is involved, have relevant plans available and involve the appropriate design professional where needed. Do not infer soil or groundwater conditions from the neighborhood name.