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Who We Are 

Established from Experience

In 1992, All County and Associates, Inc. (ACA) started as a three-person firm, formed by All County Investments, Inc. (ACI). ACI was a land development firm that recognized the need for professional services. As a result, ACA, located in Chester County, has grown to become a full- service engineering firm. Today, we merge professional services with practical knowledge for residential and commercial projects.

These services include: Construction Management | Civil Engineering | Environmental Permitting | Septic System Testing and Design | Land Surveying | Wetland Delineations and Mitigation


A Professional Who Puts You First

Almost any construction activity in Pennsylvania requires regulatory approval before starting construction. No matter the scale, from installing a fence, to building a structure or developing land, you need permits. Because the approval process includes many permits and agencies, it can be a headache. Working with ACA’s full-service team saves you time, money and headaches. Every step of the way, we are here to support you and educate you about the process. With a simple phone call or email, ACA evaluates your project and provides you with clear advice. We teach you the steps required to help you make informed decisions.


Education is the Heart of Our Operation

Our philosophy starts at the top and runs through every member of the team. ACA’s success comes from the fact that we devote our time to educating our employees and clients alike. Owner, Roger Lehmann, states “The rules and regulations that govern every aspect of the construction process are changing every day.” ACA’s employees pride themselves on keeping abreast of these changes. This affords us the ability to educate clients about the steps necessary to make a project work. These educated clients make better decisions and achieve their goals in an efficient and affordable way.


Who We Are

All County and Associates, Inc. (ACA) started in 1992 and built our company culture around educating clients and staff. With a foundation of experience, we continue to look to learn and tackle new challenges. We are a full-service engineering firm located in Chester County, PA. Our service region covers eighteen county region, but we focus on Berks County, Bucks County, Chester County, and Montgomery County.

Why We Do It

We understand there are many challenges and hurdles facing our clients. It is our Mission to help our clients make informed decisions in the pursuit of their goals. We do this by offering experience, knowledge and innovative solutions. This can only occur when colleagues share the same passion.

Who We Serve

All County and Associates, Inc. Full-Service Engineering Firm is the first choice of the construction and real estate community. Since 1992, ACA has completed projects for thousands of clients. It is our goal to have our clients educated and familiar with the processes. This allows for the best communication and understanding of ALL parties involved.

ACA sets itself apart by maintaining long-term relationships. This has established a dedicated referral network of satisfied customers. Our team is a trusted source for our rapid and thorough responses, and our ability to handle a project big or small. We never deviate from our primary focus of helping them make informed decisions. Our most significant client groups include:

Builder / Contractor
Home Inspector
Real Estate Agent

Why Work Here

We are seeking individuals who want to join a team of professionals with years of experience. We will work together in a close-knit and fun environment to expand your knowledge. In addition to the opportunity to partner in development, ACA offers the following benefits:

100% Paid Dental | 401(k) | Paid Holidays, Sick Time, and Personal Time | AFLAC | Continuing Education Opportunities | Close-Knit Workplace

Join Us:

Current Openings:
We are always looking for contributors to advance the organization. So feel free to contact us, even if no current open positions are listed.

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Currently, obtaining your degree or certification and looking to practice your future career?

Apply for an internship today!

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ACA‘s technical expertise comes from listening to our customers. This allows us to assist them in finding the best resources and solutions to their problems. It is through this that we have come to know our customers’ needs and what makes each one of them different. Are you one of the following:

● An architect, home builder, or real estate developer looking to research requirements for construction, permitting or planning?

● A homeowner or real estate agent with concerns about property boundaries, floodplains or sewage disposal system issues.

● Or maybe you are just interested in learning more about what we do and who we work with on an ongoing basis.

ACA works with a variety of organizations, firms, and resources to provide reliable solutions. Our goal is to provide you with the means to make educated decisions. In doing so, we present some of our largest partners and resources below.



Organizations | Publications

Berks-Mont Business
Route 422 Business Advisor
SWS Magazine
PA Association of SEO
PA Onsite Wastewater Recycling Association
PA Septage Management Association

We are always updating and adding partners, organizations, and publications. If you have a request for a link that is not listed above, please send us the website’s information.


Owner / COO: Roger Lehmann, SEO

Roger, a founding member of ACA, brings over thirty years of experience to the company. His practical experience includes property development and home construction. Also, he is a certified Sewage Enforcement Officer. It is this education, experience, and drive that ensures he is a vital part of the organization today.

President / CFO: Sharon Marcheskie

Sharon has been a vital part of the growth of ACA. Before joining ACA, she established herself in the banking industry, as the go-to resource for information and service. Since that time, Sharon has led our organization through many periods of growth. Additionally, she has instilled the pillars of resilience to ensure we are here for years to come.

Professional Engineer: Jason Bailey, PE

Jason joined ACA with over a decade of experience in Civil Engineering. His experience includes home design, home construction, civil design, and regulatory approval and inspections. He obtained a degree in Structural Design and Construction Engineering Technology from Penn State University and is a licensed Professional Engineer in Pennsylvania. In 2018, he completed his MBA, from Alvernia University. His experience provides a unique combination that combines innovative solutions and business acumen.