The Township has a Stormwater Ordinance which requires residents to control their stormwater runoff from new construction projects in excess of 499 square feet. Additionally, a grading permit is required for land disturbances of more than 5,000 square feet on regular grades, 1,000 square feet of land on a steep slope. If a project requires a stormwater and/or grading permit as well as a building permit, the plans and applications for both can be reviewed simultaneously by the Township staff.
PLEASE NOTE: During Township closures due to COVID-19 concerns, all stormwater & grading permits should be submitted electronically to EngineeringDept@tredyffrin.org. If the file is too large to send via e-mail attachment, please submit your information via an FTP/Dropbox link. Additionally, all requests for permits or inspections are required to complete the REQUEST FOR PERMIT OR INSPECTION DURING COVID-19 PANDEMIC in order to obtain a permit or inspection. These can be submitted online or via US mail. Thank you for your cooperation during this time.