The market for construction design services is healthy, with a few exceptions. The buildings market continues to grow at a measured pace, and the passage of the federal Fixing America’s Surface Transportation (FAST) Act, as well as progress in Congress on other federal infrastructure funding initiatives, have many designers in the infrastructure markets optimistic. While low oil prices have depressed the markets for big-ticket oil and gas work and the power market seems sluggish, most U.S. design firms are in a good frame of mind.

The table below shows only rankings and firm name. For complete data from the Top 500 Design Firms list see the following links.

Companies are ranked according to revenue for design services performed in 2015 in $ millions (*). Those with subsidiaries are indicated by (†). For information on subsidiaries and where each firm worked outside of the U.S., see http://www.enr.com. **Firms not ranked last year. Some markets may not add up to 100% due to omission of “other” miscellaneous market category and rounding. NA-Not available.

Key to type of Firm: A=architect; E=engineer; EC=engineer-contractor; AE=architect-engineer; EA=engineer-architect; ENV=environmental; GE=geotechnical engineer; L=landscape architect; P=planner; O=other. Other combinations possible. Firms classified themselves.