Industry-Leading, Inspired Design

undefinedLEO A DALY is an internationally-recognized, award-winning architecture, engineering, planning, interior design, and program management firm. We are consistently ranked among the top design firms in the world. Our diverse portfolio includes world-class projects in more than 91 countries, all 50 US states, and the District of Columbia.

Founded in 1915 by Leo A. Daly, Sr., our firm rose to national prominence for pioneering the use of interdisciplinary project teams:  a "whole project" approach that ensures maximum efficiency, coordination, and client satisfaction. Today, under the leadership of Leo A. Daly III, FAIA, RIBA, FRAIA, we continue a legacy of innovation and commitment to client satisfaction, creating exceptional projects that enhance and enrich the human experience.

Our services are extended through Lockwood, Andrews & Newnam, Inc. (LAN), a LEO A DALY company, experienced in engineering, infrastructure consulting, and program management.

Our Values


Our integrated approach combines experts from every design discipline: architecture, engineering, planning, and interior design. This harmony of design and process, pioneered by LEO A DALY, results in better project management and a more cohesive final design.

Design Excellence

Design excellence permeates our thinking, defines our culture, and fuels our passion. We approach every project with an open, questioning mind, seeking to solve design problems in a way that serves clients, values the environment, and inspires users.

Client-Centered Approach

The foundation of our approach is client-centered. Working side-by-side with every level of stakeholder, we collaborate to serve your operational and business goals. Your vision, paired with our creativity and expertise, produces exceptional results.