Mission
Our WhyTo create enduring designs that simplify the complex and positively impact the people and communities we serve.
enduring
design
Providing spaces for people and communities to thrive for generations to come.
simplifying
the complex
Imaginative thinking and our distinctive approach leads to the best solutions.
serving
communities
Positively impacting those who live, work, and play in spaces we help to create.
Forward Thinking From the Beginning
THP Limited (THP) is a structural and architectural engineering design firm established in 1973 with a focus on shaping a more resilient and equitable future. We place people at the center of every decision, pairing technical knowledge with a clear understanding of how spaces are used, maintained, and experienced over time. With offices in Cincinnati and Cleveland, Ohio, and Raleigh, North Carolina, our team is positioned to support clients with local insight and responsive service across regions.
Clients rely on THP as a steady advisor for complex challenges, from new construction to the rehabilitation of existing buildings. Our commitment to progressive design practices helps teams navigate both the immediate demands of a project and the long-term performance of the built environment. Through clear communication and a thoughtful, solutions-driven process, we help reduce stakeholder risk while advancing designs that balance performance, cost, and durability. This approach has established a reputation for consistent quality and dependable outcomes.
About us
Design with Purpose
To create enduring designs that simplify the complex and positively impact the people and communities we serve.
Innovative Design – Imaginative thinking and our distinctive approach leads to best solutions.
Community Driven – Our work provides thriving communities.
Advancement in Engineering – Our team is committed to advancing our field and building a brighter future.
Proven Success
Building Value in Every Project
Our creative approach to design and achieving our clients’ goals has earned THP a reputation for quality and reliability. With a team of 70, we operate as “One THP,” connecting our three offices, Cincinnati and Cleveland, Ohio, and Raleigh, North Carolina, as a single team that supports projects regardless of location. Team members collaborate across offices and service areas, sharing best practices while working closely with clients and partners to deliver thoughtful solutions.
Employees
states registered
advanced degrees
USGBC LEED/ Parksmart advisors
ABOUT THP
THP Limited is a structural and architectural engineering design firm. With a mission to shape a more resilient and equitable future, we put people at the center of everything we do.
PRIMARY LOCATIONS
Cincinnati
221 East Fourth St., Ste 1150
Cincinnati, Ohio 45202
513.241.3222
Cleveland
812 Huron Rd., Ste 850
Cleveland, Ohio 44115
216.553.4973
Raleigh
510 Glenwood Ave., Ste 222
Raleigh, North Carolina 27603
919.341.0225
SATELLITE LOCATIONS
Northern Virginia
ABOUT THP
THP Limited is a structural and architectural engineering design firm. With a mission to shape a more resilient and equitable future, we put people at the center of everything we do.
PRIMARY LOCATIONS
Cincinnati
221 East Fourth St., Ste 1150
Cincinnati, Ohio 45202
513.241.3222
Cleveland
812 Huron Road, Ste 850
Cleveland, Ohio 44115
216.553.4973
Raleigh
555 Fayetteville Street, Ste 300
Raleigh, North Carolina 27601
919.341.0225
SATELLITE LOCATIONS
Raleigh, North Carolina
Northern Virginia