Using Our Experience to Engineer a Better Future

Bring your goals and projects to life on schedule and on budget, with an emphasis on quality and safety at every step of the journey.

At RETTEW, we’re leaders in delivering professional engineering consulting services and implementing effective strategies for your public or private projects across all sectors. We partner with you by taking time to fully understand your vision and business goals, which allows us to see the big picture, anticipate your needs, uncover potential challenges, and deliver innovative, efficient solutions.

We can help solve your challenges across various engineering consultant industries, including power and utilities, oil and gas, transportation, commercial development, water, and government. As the following projects illustrate, our engineering services consultants assist you in reducing costs, ensuring compliance, and improving efficiency.

Featured
Project

Strata Symphony

The Strata Symphony luxury apartments, comprising a two-level parking garage with four floors of apartments above, represent a key component in the revitalization of downtown Allentown. This project on just .56 acres faced numerous challenges including integrating modern infrastructure within a historic, urban setting and addressing environmental sustainability. RETTEW’s expertise ensured efficient land use, optimizing space for residential units while incorporating green spaces and community areas. We implemented innovative stormwater management techniques, such as a green roof, to mitigate runoff and protect local waterways, enhancing…

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More Than Half a Century of Commitment to You

RETTEW was built on the principles of investing in people, producing better solutions, and using our experience and expertise to serve you better. This dedication has allowed us to expand into numerous industries and markets. We believe in collaboration, whether that’s among our teams, within our communities, or with our clients.

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Join Our Team

Join Our Team

Our collaborative teams are one of the reasons RETTEW is respected and trusted in the communities we serve. As a 100% employee-owned company, we are committed to our work and each other, all while helping our clients achieve their goals.

If you’re ready to make a difference, check out our open positions.

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Find Your Solution with RETTEW

Consistently ranked by Engineering News-Record as a Top 500 Design Firm, RETTEW has a big-picture understanding yet retains an eye for the smallest detail of every project. You can place your full confidence in our diverse team of engineers, environmental consultants, designers, surveyors, and other skilled specialists for demanding engineering consulting projects of all sizes in any market. Partner with us for your engineering consulting needs on your next commercial project.

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RETTEW NEWS & INSIGHTS

  • RETTEW Projects Tackling Stormwater and Flooding Challenges

    July 16, 2025

    Stormwater and flooding are growing concerns for communities and developers alike. RETTEW has delivered innovative, sustainable solutions across Pennsylvania and beyond. Here are some standout projects that demonstrate how RETTEW helps clients mitigate flood risks, enhance water quality, and meet regulatory requirements. To comply with MS4 Permit requirements, Manheim Borough partnered with RETTEW to restore…

  • ASPIRE Internship Blog: Bridging the Gap from Classroom to Land Development

    July 15, 2025

    By Matt Wallence As a rising fifth year landscape architecture student at Penn State, my internship at RETTEW has been an incredible opportunity to apply the knowledge I’ve learned in the classroom and connect with real-world projects that involve actual clients. My time at RETTEW has significantly strengthened my understanding of land development and is…

  • Using Engineering Consulting to Understand Energy Regulation Standards

    July 10, 2025

    The energy industry is continuously evolving, with new policies and environmental concerns emerging daily. Keeping up with and applying these changes can be a time-consuming process. Engineering consulting firms, such as RETTEW, bridge the gap between the technical demands of energy projects and the requirements of energy regulations. Their expertise in design, analysis, project management,…

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