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

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.

View Our Open Positions 

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

  • Navigating the Reissuance of the PAG-13 General Permit

    May 08, 2025

    Introduction As municipalities across Pennsylvania prepare for the reissuance of the PAG-13 General Permit by the Pennsylvania Department of Environmental Protection (PA DEP), it’s crucial to understand the implications of this significant regulatory shift. At RETTEW, we believe informed decision-making and proactive planning are key to navigating these changes effectively.  Understanding the Reissuance The PA…

  • Make Your Mark Foundation Donates to Downtown Daily Bread

    April 15, 2025

    Each year, the Make Your Mark Foundation selects a charitable organization whose mission reflects the enduring values and passion for service championed by our former President & CEO, Mark Lauriello. RETTEW is proud to announce this year’s donation has been made in Mark’s name to Downtown Daily Bread, a Harrisburg-based nonprofit dedicated to addressing hunger and homelessness….

  • RETTEW Announces Andy Bennett as New Chief Operating Officer

    April 07, 2025

    RETTEW is pleased to announce that Andy Bennett will officially step into the role of Chief Operating Officer (COO) on April 7, 2025, succeeding Rob Lauriello as part of the company’s succession plan. Andy Bennett joined RETTEW on July 29, 2024, as Vice President of Operations. With over 30 years of experience in the AEC…

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