Your 1-Stop Structural Engineering Firm

Through the teaming of Zivan Cohen and the late Dick Tadjer, TadjerCohen Associates, Inc. was established in 1962 to provide consulting structural engineering services. The firm was later renamed Tadjer-CohenEdelson Associates, Inc. (TCE & Associates, Inc.). Since its inception, TCE has earned the reputation as a one-stop engineering firm with unparalleled engineering ability and customer service that fulfills clients’ needs. On the whole, we protect our client’s assets – their buildings.

Our Mission

"Preserving the past and building the future. Since 1962, we have been fulfilling this mission by assisting our clients in an economical and innovative manner through engineering excellence, preserving the environment, and building communities."

Our Services

New Construction

TCE creates innovative and economical designs utilizing state of the art technology.

Repair & Restoration

TCE extends the life and serviceability of buildings

Waterproofing & Building Envelope

Relying on experience gained through repair and restoration to provide long-lasting solutions.

Expert Structural

Engineering Firm

At TCE & Associates, we are a nationally recognized structural engineering firm with a team of 40+ licensed professionals dedicated to designing safe, efficient, and enduring structures. With decades of experience, our engineers bring technical depth and innovative thinking to every phase of a project—from concept to completion. 

Lafayette Towers
Washington, DC
Goodwin House
Falls Church, VA
McCracken Apartments
Washington, DC
Solaire Metro Apartments
Silver Spring, MD

Testimonials

We have worked with TCE for many years and several high-profile projects for our company. I have had the pleasure of having them on my team the Moxy and AC Hotels in Washington, DC and currently working with them on a coastal development in Rehoboth Beach, DE. We always enjoy having them on our team because of their expertise, attention to detail, and commitment to meeting our schedules and budgets ensured our projects to the client are successful.

Manish Patel Principal, Fillat + Architects (NC)

TCE has been an integral part of our team for over 10 years. Their ability to be nimble and thorough at the same time is invaluable to our firms’ work.

Peter Fillat President CEO, Fillat + Architects

For over two decades, Carr Properties has had the privilege of partnering with TCE on a diverse range of real estate projects, spanning commercial office spaces, residential developments, and mixed-use properties. Throughout our collaboration, TCE has consistently demonstrated an unwavering commitment to excellence, navigating complex challenges with professionalism and expertise. TCE’s ability to manage budgets with precision has been instrumental in keeping our projects financially on track, even in the face of unforeseen market fluctuations or supply chain disruptions. Their proactive approach to scheduling ensures that milestones are met without compromising quality, allowing us to deliver projects on time and exceed stakeholder expectations.

Jason Bockenek Senior Vice President, Carr Properties (NC)

I have worked with Tadjer-Cohen- Edelson professionally for the last thirty years and they have been the go-to structural engineers for our office. They are fast and responsive during all design and construction phases, and their structural designs are efficient and highly in tune with local construction standards and methods. I highly recommend using them for your structural engineering challenges.

Andrew Taylor Senior Vice President, Carr Properties (NC)

TCE is one of the strongest structural engineering firms we work with nationwide. Their consistency, professionalism, and creativity set them apart, and why we routinely turn to them for our projects.

Joe Muffler Senior Managing Director-Development, Mill Creek Residential (NC)

We’ve had the pleasure of teaming with TCE for over twenty-five years on a multitude of projects and structural typologies. This includes a recent collaboration, where they delivered a sensible and cost-effective solution merging three structural systems – adaptive reuse, concrete, and wood frame. We see them as teammates - personable, knowledgeable, and professional.

Jon Wallenmeyer Principal, SKI Architects (NC)

For many years, TCE has been a trusted partner of ours across multiple developments including wrap, podium, and high-rise product. TCE’s commitment to meeting deadlines and their ability to design around complex structural conditions has made them an excellent addition to our team.

Luca Barber Senior Managing Director, Mill Creek Residential Trust (NC)

I've had the pleasure of working with TCE on multiple projects over the past 10 years, and they are by far the best I've ever collaborated with. Their ability to solve complex issues with practical, cost-effective solutions while maintaining top-tier quality is unmatched. There's truly nothing they can’t design.

Jonathan Wilmarth Senior Superintendent, Modera Parkside (NC)

It has been my pleasure over the last decade to work side by side with the TCE team to deliver some of the DMV areas most complex high-rise buildings. The TCE team has been a fantastic partner, working through complex construction challenges and always coming to the table with expert solutions to help drive the projects forward.

Pasco Umbriac Vice President, Clark Construction Group (NC)

I have worked with TCE across several decades. While the staff may have changed over the years, TCE's work product remains consistently creative. The company approaches its projects with professionalism, and produces detailed drawings that are responsive to the needs of the owner, architect and contractor alike.

Ilan Scharfstein Vice President, Development, Renaissance Centro, LLC. (NC)

Throughout our multifamily projects in Charlotte and Raleigh NC, the entire Tajer Cohen Edelson Associates team has been very professional, responsive, and an overall pleasure to work with.

Dave Dubay Vice President, NWR Construction (NC)

I’ve had great success working with TCE for over 25 years on projects large and small, concrete and steel, new and renovation. They provide thoughtful and dependable engineering services at all phases of design and construction.

Ari Blumenthal AIA, Senior Principal, Shalom Baranes Associates (NC)

I have worked with Tadjer-Cohen- Edelson professionally for the last thirty years and they have been the go-to structural engineers for our office. They are fast and responsive during all design and construction phases, and their structural designs are efficient and highly in tune with local construction standards and methods. I highly recommend using them for your structural engineering challenges

Andrew Taylor AIA, Senior Principal, Shalom Baranes Associates Architects (NC)

Over the years I have had great experience working with TCE on three multifamily mixed use projects in the area; Beacon Center in Washington DC, The Bartlett and The Grace/Reva Apartments both located in Crystal City Arlington VA. I worked with three different TCE engineers, who were all, very knowledgeable, each carried a wealth of experience, and they were able to understand, answer and address structural questions quickly. It was a pleasure to work with TCE, on these three challenging projects, and I look forward to our future collaborations.

Mauricio Mallea LEED AP, Senior Associate, Architects of Sustainable Community (NC)

The Donohoe Companies, Inc. has had a long-standing and successful partnership with Tadjer-Cohen-Edelson Associates, Inc. for decades. Their expert strategic guidance in areas such as base building design, structural remediation, roofing, waterproofing, and overall structural consultation has consistently delivered cost-effective solutions to even our most complex challenges.

Mark Barry Senior Vice President, Donohoe Commercial Real Estate (Repair)

We’ve had the pleasure of working with Tadjer Cohen Edelson on office building roofs and a large mixed-use commercial property. Their team delivered highly detailed and precise construction drawings that were critical to the success of the project. Whether it was an office building roof, mixed-use commercial roof, or apartment tower roofs, each project was handled with professionalism, technical expertise, and a keen attention to detail. They consistently demonstrated a deep understanding of building systems and construction processes, which made coordination seamless and efficient. Tadjer Cohen Edelson’s commitment to quality and responsiveness helped us stay on schedule and ensured that the final product met the highest standards. We look forward to working with them again on future projects and would confidently recommend their services to anyone seeking expert and engineering support.

Thomas W. Roberson Thomas W. Roberson

Tadjer Cohen Edelson’s structural engineering team is a beacon of excellence in a sea of mediocrity. Their unwavering commitment to quality and detail sets them apart as a true leader for concrete restoration and preservation. TCE’s passion and expertise shines through in every minutia of even the most complicated of projects while consistently delivering outstanding results. Their innovative approach to problems, and their responsiveness in service makes them a trusted consultant on every structural project big or small.

Arthur Williamson Senior Vice President, National Capital Bank (Repair)

We’ve had a great relationship with TCE & Associates for over 30 years. I’ve always been impressed with their commitment to excellence and ability to provide innovative and cost-effective solutions to problems whether for new construction or repair and restoration of the existing buildings. We keep coming back to them for our needs because of the value that they provide. I can’t recommend them enough.

Douglas Erdman CEO, Community Realty Co., Inc. (Repair)
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