NYC DOB: DEP Stormwater Construction and Stormwater Maintenance Permits

Updated: April 12, 2022

Linked below, please find Service Notice of Local Law 91 of 2020.

Applicants for work that will result in an amount of soil disturbance greater than or equal to 20,000 square feet, or in the creation of 5,000 square feet or more of impervious surface, are required to submit DEP Stormwater Construction and Stormwater Maintenance Permits. This requirement is not limited to work in an MS4 Area.

This Service Notice has been posted:


New York Construction Solutions

Cahill Strategies has experience representing large general contractors, construction management firms, owners, and developers. A key to our success is our vast network of decision makers that we have the ability to reach on your behalf. Additionally, our team is involved in the legislative and regulatory processes at the Federal, State, and Local levels which affect the construction industry in New York State, New York City, and surrounding regions. We possess the knowledge of industry standards and trends, along with key relationships that will bring your projects to fruition. Read more…

Helpful Links:

Contact Us:




Cahill Welcomes Bob D’Alessio

bob dalessio Robert “Bobby” D’Alessio, is a former New York City Department of Buildings Senior Executive Director of Construction Safety. Mr. D’Alessio’s focus is predominately in the areas of construction code and safety analysis for our clients’ major new building and renovation projects in the New York City and surrounding regions.

As Cahill Strategies’ Director of Construction Code and Safety, Bobby brings an unparalleled level of knowledge and practical experience to our growing construction solutions practice area.

More about Bob D’Alessio…