| Award | FY 2025-2029 Architectural/Engineering Design Services, Citywide | Sanitation | Henningson, Durham & Richardson P.C. | $5.0M | Competitive Sealed Proposals | Dec 10, 2025 | 82724P0002004 |
| Award | REI Services for Protective Coating of Greenpoint Ave Bridge | Transportation | Henningson, Durham & Richardson P.C. | $3.1M | Competitive Sealed Proposals | Oct 10, 2025 | 84124P0010001 |
| Award | HWDRCW10, RC for Engineering Design | Design and Construction | Henningson, Durham & Richardson P.C. | $15.0M | Renewal | Jul 18, 2025 | 85022P0003009R001 |
| Award | HWDRCW09, Renewal of Requirements Contract for Engineering Design and Related Services for Large Infrastructure Projects, Citywide | Design and Construction | Henningson, Durham & Richardson P.C. | $5.0M | Renewal | Dec 6, 2024 | 85021P0003002R001 |
| Award | A&E SERVICES MTS | Sanitation | Henningson, Durham & Richardson P.C. | $2.5M | Renewal | Sep 25, 2024 | 82720P8151KXLR001 |
| Award | CAT-534: On Call Design Services for the Reconstruction of Water Supply Facilities | Environmental Protection | Henningson, Durham & Richardson P.C. | $6.0M | Competitive Sealed Proposals | May 7, 2024 | 82624P0001001 |
| Award | ENVIRONMENTAL AND TRANSPORTATION PLANNING SERVICES | Sanitation | Henningson, Durham & Richardson P.C. | $3.6M | Renewal | Apr 15, 2024 | 82717P8221KXLR002 |
| Award | BWS JOC Program | Environmental Protection | Henningson, Durham & Richardson P.C. | $2.5M | Competitive Sealed Proposals | Mar 28, 2024 | 82623P0011001 |
| Award | Total Design (TD) & Construction Support Services (CSS) for Woodhaven Blvd over Atlantic Avenue in the Borough of Queens LL63: FY22NDOT92 | Transportation | Henningson, Durham & Richardson P.C. | $8.8M | Competitive Sealed Proposals/Pre-Qualified List | Mar 25, 2024 | 84122P0016001 |
| Award | RQ_PV, On Call Emergency Contracts for Construction Work and Construction Related Services, Category 9: Supervision, Management and Administrative Services | Design and Construction | Henningson, Durham & Richardson P.C. | $36.0M | Renewal | Mar 20, 2024 | 85021P8067KXLR002 |
| Award | CAT-507 DES, Preliminary Design, Design, and Design Services During Construction for the Grahamsville, Grand Gorge, Pine Hill and Tannersville Water Supply Resource Recovery Facility Microfiltration Replacement | Environmental Protection | Henningson, Durham & Richardson P.C. | $10.3M | Competitive Sealed Proposals | Mar 12, 2024 | 82623P0037001 |
| Award | Appraisal Consulting Services in Support of Litigation | Law Department | Henningson, Durham & Richardson P.C. | $400K | Negotiated Acquisition | Jan 18, 2024 | 02520N0052001 |
| Award | WI-292- CONSTRUCTION MANAGEMENT SERVICES FOR THE RECONSTRUCTION OF POWER DISTRIBUTION AT WARDS ISLAND WASTEWATER RESOURCE RECOVERY FACILITY | Environmental Protection | Henningson, Durham & Richardson P.C. | $13.9M | Competitive Sealed Proposals | Nov 30, 2023 | 82623P0027001 |
| Award | MS4-SWMP REG: Permit & Regulatory Support Related to the Citys Municipal Separate Storm Sewer System (MS4) Permit | Environmental Protection | Henningson, Durham & Richardson P.C. | $9.1M | Competitive Sealed Proposals | Aug 18, 2023 | 82623P0014001 |
| Award | HWCRQ05C, REQUIREMENTS CONTRACT FOR RESIDENT ENGINEERING INSPECTION SERVICES IN CONNECTION WITH VARIOUS INFRASTRUCTURE PROJECTS, CITYWIDE | Design and Construction | Henningson, Durham & Richardson P.C. | $16.0M | Renewal | Aug 16, 2023 | 85021P8018KXLR001 |
| Award | CM Srvcs in Connection w/Misc Projects various BWT locations | Environmental Protection | Henningson, Durham & Richardson P.C. | $15.0M | Competitive Sealed Proposals | Jul 20, 2023 | 82622P0024001 |
| Award | Design Services Contract for Cloudburst Projects | Environmental Protection | Henningson, Durham & Richardson P.C. | $10.0M | Competitive Sealed Proposals | Jul 19, 2023 | 82623P0003003 |
| Award | RQ_PV, On Call Emergency Contracts for Construction Work for Category 9: Supervision, Management and Administrative Services | Design and Construction | Henningson, Durham & Richardson P.C. | $18.0M | Renewal | May 18, 2023 | 85021P8067KXLR001 |
| Award | HWDRCW10, RC for Infra. Fed Funded Design | Design and Construction | Henningson, Durham & Richardson P.C. | $30.0M | Competitive Sealed Proposals | Mar 14, 2023 | 85022P0003009 |
| Award | REAL ESTATE ApprAISAL ConsultING SERVICES in SuppORT of LITIGATION: Todt Hill Bluebelt | Law Department | Henningson, Durham & Richardson P.C. | $65K | Negotiated Acquisition | Mar 8, 2023 | 02522N0044001 |
| Award | CM Services for the Reconstruction Primary Tanks WI WRRF | Environmental Protection | Henningson, Durham & Richardson P.C. | $12.4M | Competitive Sealed Proposals | Dec 27, 2022 | 82622P0001001 |
| Award | ON-CALL CONTRACT FOR Environmental Consulting and Engineering | City Planning | Henningson, Durham & Richardson P.C. | $1.9M | Competitive Sealed Proposals | Aug 17, 2022 | 03021P0008001 |
| Award | Service Agreement for Design Build Owners Representation | Transportation | Henningson, Durham & Richardson P.C. | $25.0M | Competitive Sealed Proposals | Jun 1, 2022 | 84121P0023002 |
| Award | ESA - Engineering, Design &Inspection IT-Related | Transportation | Henningson, Durham & Richardson P.C. | $5.0M | Renewal | May 17, 2022 | 84119P8220KXLR001 |
| Award | HWCESA16A - RENEWAL ENGINEERING SERVICE AGREEMENT (ESA) FOR PLANNING, ENGINEERING AND ARCHITECTURAL DESIGN AND INSPECTION SERVICES CITYWIDE | Transportation | Henningson, Durham & Richardson P.C. | $10.0M | Renewal | Apr 20, 2022 | 84119P8217KXLR001 |
| Award | WMP-21 Waterfowl Management | Environmental Protection | Henningson, Durham & Richardson P.C. | $9.5M | Competitive Sealed Bids | Apr 13, 2022 | 82621B0058001 |
| Award | ENVIRONMENTAL AND TRANSPORTATION PLANNING SERVICES HENNINGSO | Sanitation | Henningson, Durham & Richardson P.C. | $3.6M | Renewal | Apr 11, 2022 | 82717P8221KXLR001 |
| Award | HWDRCW05, RENEWAL OF REQUIREMENTS FOR ENGINEERING DESIGN AND RELATED SERVICES FOR FEDERALLY FUNDED INFRASTRUCTURE PROJECTS, CITYWIDE | Design and Construction | Henningson, Durham & Richardson P.C. | $15.0M | Renewal | Mar 22, 2022 | 85018P8284KXLR001 |
| Award | Waterfowl Management | Environmental Protection | Henningson, Durham & Richardson P.C. | $1.7M | Negotiated Acquisition | Dec 8, 2021 | 82621N0006001 |
| Award | RC for Engineering Design for Large Infrastructure Projects | Design and Construction | Henningson, Durham & Richardson P.C. | $15.0M | Competitive Sealed Proposals | Dec 8, 2021 | 85021P0003002 |