Yohn Engineering is a Civil Engineering firm located in Montgomery County, Pennsylvania specializing in obtaining site permits and land development approval as well as stormwater management design for Residential, Commercial, and Institutional projects of any size. With the current climate of responsible development, permits are necessary for most construction. Whether you'd like to build a deck, pool, addition, new house or seventy lot subdivision, it will require one or many permits. We work hard to get our clients' approvals in an efficient and timely manner. We have a range of experience from providing a small permit plan set for a homeowner to a full land development plan set for a large developer. We can adapt to any project size and provide the same level of service regardless. We are a young company with energetic employees willing to burn the midnight oil in order to meet deadlines.