Henningson Durham & Richardson PC
City-funded organization
HDR Engineering (registered in NYC contracts as Henningson Durham & Richardson PC) is a 100%-employee-owned global architecture and engineering firm with over 12,000 staff worldwide; its New York practice holds $522 million in active city contracts as of August 2026, predominantly design and construction management for the Department of Environmental Protection (wastewater plant upgrades, reservoir infrastructure) and the Department of Design and Construction, out of nearly $1.16 billion awarded since 2006.
- Industry (per city contracts)
- Professional Services
- City contracts (active)
- $517,698,371 · 64 contracts
- Awarded all-time
- $1,171,504,189 · 189 since 2006, incl. expired
- Registered to start later
- $5,000,000 · 1 contract
- Paid to date
- $487,075,275
- Won without a fresh bid
- 26% of contract value · $304,763,228 · 35 contracts
Holds contracts at
- Department of Design and Construction City agency
- Department of Environmental Protection City agency
- Department of Transportation City agency
City contracts
Registered city contracts, largest first by current contract value (not amount spent): running now, then registered to start later, then ended. Totals count every registered contract. Each line shows its Checkbook contract ID. The tag on each row is how it was awarded (“no-bid” = non-competitive).
- RQ_PV, On Call Emergency Contracts for Construction Work and Department of Design and Construction · MMA185020248804578 $36,000,000
- Emerg Des, DSDC, CM for replacement of msp at coney isl wwtp Department of Environmental Protection · CT182620191425686 $31,645,197
- aqueduct connection environmental support; NYC; Dutchess Cty Department of Environmental Protection · CT182620121439991 $23,901,428
- Master Agreement to serve as Owner's Representative to manag Department of Transportation · MMA184120268807981 $22,686,094
- Constr.Managnt Svcs in Connection w/Misc.Projcts @ Var.WRRF Department of Environmental Protection · CT182620191428866 $21,925,163
- HWDRCW09, Renewal of Requirements Contract for Engineering D Department of Design and Construction · MMA185020258803513 $20,000,000
- Superfund Support - Gowanus Canal & Newtown Creek - Renewal Department of Environmental Protection · CT182620268804565 $19,975,345
- Design & DSDC for Hutchinson Rvr Disinfec Facilty Department of Environmental Protection · CT182620181428355 $19,644,922
- Waterfowl Management Program Department of Environmental Protection · CT182620258806654 $17,462,654
- HWDRCW010, Renewal of Requirements Contract for Engineering Department of Design and Construction · MMA185020258808363 $15,000,000