Integrated Design Excellence

LEO A DALY is an internationally recognized leader in integrated design. For more than 100 years, our dedication to design excellence has produced exceptional spaces that enhance and enrich the human experience.

Our success is rooted in our “whole project” approach, which combines experts from each design discipline into collaborative teams at the outset of each project. This singular blend of creative and technical expertise allows us to push the limits of high-performance design and deliver excellence to every client.

Engineering Drives Performance

Our engineering is not reactive to architecture, but rather an essential driver of the functional, experiential and aesthetic evolution of every design solution. This harmony of engineering and architecture results in design that is deeply rooted in data and analysis. Performance, efficiency and sustainability are coded into the DNA of our work.

Deep Specialization

As leaders in their disciplines, our engineers are both technically advanced and passionate about design. Their specialized knowledge of best practices and design innovations goes beyond codes and standards to provide a forward-thinking approach to engineering. No matter the building type, our projects meet and exceed requirements while optimizing operations, maintenance and lifespan.

Proven Experience

Our engineering portfolio includes world-class projects in more than 91 countries, all 50 US states and the District of Columbia. With over 220 engineering staff in studios across the country, we provide technically exceptional designs and enhance the built environment through verifiable performance.

Sustaining a Legacy

Founded in 1915, LEO A DALY rose to national prominence for pioneering the use of interdisciplinary project teams. Ahead of his time, our founder Leo A. Daly Sr., knew that an integrated design approach would lead to maximum efficiency, coordination and client satisfaction. Built on this foundation, LEO A DALY is now one of the largest planning, architecture, engineering and interior design firms in the world. Under the leadership of Leo A. Daly III, FAIA, RIBA, FRAIA, we continue a legacy of innovation and commitment to client satisfaction, placing an unyielding focus on design excellence to enhance and enrich the human experience.