Company Profile

Yerkes Associates, Inc

Company Overview

Quality, integrity and the ability to get the job done right – the first time – has been the mission of Yerkes Associates, Inc. for more than one hundred thirty-five years.

Founded as land surveyors in 1874, the firm now offers expanded operations with offices in West Chester and Rosemont. Our staff of engineers, planners, building inspectors, and surveyors handles projects from conception to completion.

Versatility is our trademark. We provide services to municipalities, institutions, churches, commercial, and industrial clients, as well as, individuals. Projects range from small additions to regional mall complexes and individual lot utility designs to large municipal water and sewage system designs.

How We Serve You Best:
Our staff of professionals turns your ideas into reality. You are involved in the planning process, clearly defining your needs so we can achieve the results you expect-on time and within your budget. With your criteria in mind, we recommend long lasting, cost effective solutions.
After you choose the best option, we engineer and design your project from start to finish.
Our in-depth knowledge of the technical, social, and political requirements enables you to work quickly through the governmental process when obtaining necessary reviews, approvals and permits. We then assist you in the bidding and awarding of contracts, construction layout and inspection of the work, if desired.

What Does This Mean For Our Clients?
You save time and money with our “one stop” consulting services. A job done right the first time, results in substantial savings in construction, operation, and maintenance costs. Plus, you’ll enjoy two-way communications and exceptional personalized service.
Our clients like this approach, with some 75% either “repeat or referral” business. Our roster of satisfied clients reads like a Who’s Who in Southeastern Pennsylvania. Please contact us and allow us to show you how we can move your project from an idea to a completed project.

Company History

Yerkes Associates was founded by Samuel and John Garrigues in 1874 to provide primarily surveying services to the Philadelphia Main Line property owners, businesses and financial institutions that nurtured the growth of the Montgomery and Delaware County areas during the formative years of the twentieth century. The Company’s home office was located in Bryn Mawr which is centrally located to that growth area.

Milton R. Yerkes became associated with the Company just prior to 1900 and following the retirement of the Garrigues brothers, purchased the firm in 1902 and changed its name to M.R. Yerkes, C.E. Milton Yerkes was the first of four generations of the Yerkes family to oversee its expansion in the five-county southeastern Pennsylvania area. The focal point of the Company throughout its steady growth was to provide survey and civil engineering services to both private and municipal entities developing the Main Line. The Company expanded its services in support of the orderly growth of the area by providing professional planning expertise in the early part of the 20th Century.

John B. Yerkes, Sr. joined the firm in 1933 and the name was changed to M.R. & J. B. Yerkes, Civil Engineers & Land Surveyors. By 1955, growth had progressed steadily and larger office spaces were necessary. The firm moved to Rosemont to occupy three buildings on the Vauclain Estate where its business continued to mature. Another name change to Yerkes Engineering Company was made and additional professional and support staff was added to manage the growing demand for services.

As the Main Line growth expanded into the surrounding western counties, the Company opened an office in 1969 in the Exton area of central Chester County. The Municipal Services Department was expanded to serve municipalities in Chester and Berks Counties and provide the private sector with Civil Engineering, Site Planning and Landscape Architecture. Increased demand for a variety of municipal inspection services allowed the Company to expand its Inspection Group with Certified Code Officials that provide Code compliance reviews and building construction inspection for residential, commercial and industrial construction.

To conform to a growing corporate structure, a name change to the current Yerkes Associates, Inc. was made and the Company consolidated its corporate work force in 1975 to a six acre property in Chester County near the Route 202 and 30 crossroads. The municipal Services Group expanded to serve more than 20 townships and boroughs, and the civil engineering and landscape architecture disciplines grew to provide enhanced services to the private sector. Yerkes Associates looks to a bright future in today’s unsettled economy by continuing to provide all of our clients with efficient professional services in Surveying, Civil Engineering, Landscape Architecture and all facets of Municipal Engineering.

Notable Accomplishments / Recognition

please visit our website for more information


Yerkes Associates, Inc., an Equal Opportunity Employer, offers a professional office setting, a competitive salary and benefits package including continuing education reimbursements. Company vehicles are provided to visit the various job sites.

Positions Available
This company currently has no jobs posted.

Click here to search for jobs.