Business Details
12 Years
experience
Civil Engineering Solutions for Responsible Development
Yohn Engineering is a civil engineering firm dedicated to streamlining the permitting and land development process for residential, commercial, and institutional clients. Specializing in site permits, stormwater management design, and subdivision approvals, we combine technical expertise with proactive project management to deliver efficient solutions. Our team navigates complex regulatory requirements across Montgomery, Chester, Delaware, Berks, and Bucks Counties, ensuring compliance while prioritizing client timelines. Founded in 2014 by Christopher C. Yohn, a Professional Engineer with over 15 years of regional experience, we emphasize personalized service and innovative design tailored to each project's unique challenges.Our commitment to responsible development extends to community involvement, including environmental education initiatives and local zoning advisory roles. By maintaining strong relationships with municipal authorities and leveraging advanced engineering tools, we transform permitting complexities into actionable strategies that align with both client goals and environmental stewardship standards.
Services
Site Permit Assistance
Stormwater Management Design
Land Development Approvals
Stormwater Inspections
Zoning Compliance Plans
Erosion Control Permitting
Subdivision Design
NPDES Permit Processing
Feasibility Studies
Conditional Use Plans
Details
- Year established: 2014
Highlights and features
- We offer 10+ years of regional permitting expertise
- Our team secures approvals efficiently through established municipal relationships
- Certified professionals handle complex stormwater compliance requirements
- We serve all project sizes from single-family homes to 70-lot subdivisions
- Founding engineer brings 15+ years of local development experience
Associations and certifications
- Professional Engineer (P.E.)
- Certified Professional in Erosion and Sedimentation Control (CPESC)
Services
Site Permit Assistance
We identify required permits, prepare documentation, and manage submissions for drainage, grading, and stormwater management projects. Our team navigates municipal requirements to ensure compliance while maintaining project timelines. Services include impervious area calculations and simplified stormwater solutions for smaller developments.
Stormwater Management Design
Our designs balance rate, volume, and water quality requirements through infiltration basins, stonebeds, or proprietary systems. We evaluate site conditions to create cost-effective solutions that mimic natural water flow while meeting regulatory standards for residential and commercial developments.
Land Development Approvals
We guide large-scale projects through zoning ordinances and multi-agency requirements. Services include feasibility studies, preliminary/final plans, and coordination of special exception applications to ensure compliance with SALDO regulations across multiple jurisdictions.
Stormwater Inspections
We conduct comprehensive inspections of existing stormwater systems, prepare maintenance reports, and submit documentation to municipalities. Our services ensure long-term system functionality and compliance with evolving maintenance requirements in Southeastern Pennsylvania communities.
Zoning Compliance Plans
Our team creates detailed plans demonstrating compliance with local zoning regulations, including conditional use permits and lot line adjustments. We coordinate with municipal authorities to address special exceptions and ensure project alignment with land development ordinances.
People
Christopher C. Yohn
Founder / Professional Engineer
Licensed Professional Engineer with 15+ years of regional experience specializing in stormwater management and land development. Graduated from Villanova University with Civil Engineering degree and business minor. Previously worked at Momenee and Associates before founding Yohn Engineering in 2014.
James R. Musselman
Staff Engineer
Professional Engineer with expertise in AutoCAD training and civil engineering design. Graduated from Drexel University and brings diverse experience from applications engineering roles and municipal project coordination since joining Yohn Engineering in 2016.
Questions
What types of permits does Yohn Engineering handle?
We assist with drainage permits, grading permits, stormwater management permits, subdivision approvals, and specialized permits like NPDES and PennDOT Highway Occupancy Permits.
Do I need stormwater management for small projects?
Yes, most construction projects require stormwater compliance. We determine appropriate requirements based on project size and local regulations.
How long does the permitting process take?
Timelines vary by municipality and project complexity. We provide early scheduling estimates and proactively manage submissions to expedite approvals.
What areas do you serve?
We operate throughout Southeastern Pennsylvania, including Montgomery, Chester, Bucks, Berks, and Delaware Counties.
Can you help with stormwater system inspections?
Yes, we conduct comprehensive inspections, prepare compliance reports, and coordinate necessary maintenance for municipal stormwater systems.
What makes Yohn Engineering different from other firms?
Our focused expertise in regional permitting processes, combined with personalized service and technical innovation, ensures efficient project delivery tailored to local requirements.
