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HENNINGSON, DURHAM & RICHARDSON, P.C

Subsidiary ofHDR, INCUEI: KL5HML4R3YX1CAGE: 4NR07

HENNINGSON, DURHAM & RICHARDSON, P.C is a federal contractor, registered under UEI KL5HML4R3YX1 and CAGE code 4NR07. It has been awarded $65,195,356 in federal contracts. Primary work spans Remediation Services. Top awarding agencies include Environmental Protection Agency.

Contact Information

Registration and classification details

Registration

UEI Code

KL5HML4R3YX1

CAGE Code

4NR07

Entity Structure

Corporate Entity (Not Tax Exempt)

Established

N/A

Business Classifications

For Profit OrganizationSubchapter S Corporation

NAICS Codes

236220Commercial and Institutional Building Construction
237310Highway, Street, and Bridge Construction
238220Plumbing, Heating, and Air-Conditioning Contractors
238990All Other Specialty Trade Contractors
541310Architectural Services
+6 more

Federal Contracting Overview

Award totals, agency breakdown, NAICS distribution, and geographic footprint.

AI Capability Profile

HENNINGSON, DURHAM & RICHARDSON P.C. is a legal services firm specializing in government contracting law, regulatory compliance, and procurement strategy. The firm provides expert counsel on federal acquisition regulations, bid protests, contract disputes, and compliance with FAR and agency-specific...

HENNINGSON, DURHAM & RICHARDSON P.C. is a legal services firm specializing in government contracting law, regulatory compliance, and procurement strategy. The firm provides expert counsel on federal acquisition regulations, bid protests, contract disputes, and compliance with FAR and agency-specific requirements. Their technical expertise includes navigating complex solicitation language, preparing and defending claims under the Contract Disputes Act, and advising on small business set-aside eligibility and subcontracting plans. As a law firm structured as a professional corporation, they deliver high-stakes legal representation tailored to federal contractors, with a focus on risk mitigation and contractual integrity. Award history is not available to determine specific agency engagements or recent contract performance. Consequently, no definitive patterns can be identified regarding their client base or the nature of their work with particular federal departments or agencies. The firm operates under NAICS 541330, which classifies legal services focused on specialized practice areas, including government contract law. In practice, this means they serve as strategic advisors to contractors navigating the federal procurement ecosystem, offering litigation support, compliance audits, and pre-award strategy development. Their market positioning is that of a niche legal provider for organizations requiring deep expertise in federal acquisition law, rather than general legal counsel. The entity is structured as a professional corporation (2L) and is headquartered in New York, NY. It holds no government certifications, such as 8(a), HUBZone, or WOSB. While geographically based in New York, its client base likely extends nationally, serving contractors across federal markets who require specialized legal representation in procurement matters. The firm’s value lies in its legal acumen and precision in interpreting complex regulatory frameworks governing federal contracting.

Key Performance Metrics

Awards Count

1

All time

Active

0

Currently performing

Completed

1

Past period of performance

Total Awards

All time

Contracts

Prime · all time

Subcontracts

Sub · all time

Grants

Prime · all time

Subgrants

Sub · all time

Award Analytics & Distribution

Awards by Agency
Awards by NAICS
Awards by Agency Over Time
Awards by Place of Performance

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Open opportunities in HENNINGSON, DURHAM & RICHARDSON, P.C's top NAICS codes and agencies

NAICS: 562910
New
Theatre Mold Remediation Scope of Work
Solicitation # AT25-0006
Solicitation AT25-0006 is a subcontracting opportunity with Adams and Associates, Inc. for the Atterbury Job Corps Center in Edinburgh, Indiana. The project requires comprehensive mold remediation for Theatre Building 1086 following a sprinkler system failure. The scope of work includes remediating all visible and exposed interior components and the cleaning or replacement of damaged theater seating cushions. All activities must adhere to ANSI/IICRC S520 standards, EPA and OSHA regulations, and the findings of the Micro Air Inc. Mold Testing report dated April 11, 2024. Key requirements include the provision of a Certified Industrial Hygienist to verify materials and conduct clearance walkthroughs, as well as a detailed remediation plan covering containment, HEPA filtration, and waste disposal. This is a single lump sum contract awarded based on best value, with evaluation weights assigned to price (60), quality (20), past performance (10), and schedule (10). Bidders must attend a mandatory site visit on October 27, 2026, and submit typed proposals on company letterhead by November 9, 2026. Required submission documents include a detailed cost breakdown, a timeline for substantial completion, a W9, a vendor questionnaire, and proof of a valid Indiana Contractor's License. Additionally, contractors must certify compliance with Davis Bacon Act wage rates and provide proof of automobile and workers compensation insurance naming Adams and Associates, Inc. as an additional insured. Work must commence within 14 days of the Notice to Proceed, with payment terms set at Net 30.
Atterbury Job Corps Center

POSTED

about 2 hours ago

DEADLINE

in 27 days
View Details
NAICS: 562910
New
SLED
66812-27-0005 Demolition of Former Boys & Girls Club Building
Solicitation # 66812-27-0005
The City of Douglas is soliciting sealed bids for solicitation number 66812-27-0005 regarding the demolition and remediation of the former Boys and Girls Club building located at 210 Jackson Street, Douglas, Georgia. The project involves the asbestos abatement, demolition, debris removal, and full lot restoration of a structure approximately 10,114 square feet in size that has experienced significant mold growth and water intrusion. Bidders must provide a single lump sum price covering all labor, equipment, materials, permits, and disposal fees. The contract will be awarded to the lowest, most acceptable bid, with the city reserving the right to waive technicalities to serve the best interest of the municipality. Interested parties must submit three copies of their bid in a sealed envelope to the City Clerk's Office by November 17, 2026, at 2:00 p.m. Required documentation includes a signed Bidder Certification, Form W-9, a Private Employer Affidavit, and E-Verify compliance. The successful contractor must furnish a performance bond equal to 100 percent of the contract price, provide commercial automobile liability and workers compensation insurance, and sign a hold harmless agreement. Final acceptance is contingent upon the submission of all clearance documents and manifests, and a final inspection to ensure the site is left in a clean, safe, and stable condition.
City of Douglas

POSTED

about 18 hours ago

DEADLINE

in about 1 month
View Details
NAICS: 562910
New
SLED
Environmental Clean-Up Services
Solicitation # IFB-080-3112101-EL
The County of Orange, OC Public Works, is soliciting firm price bids for Environmental Clean-Up Services under solicitation IFB-080-3112101-EL. The selected contractor will provide all staffing, labor, equipment, and incidentals to investigate and respond to emergency and non-emergency pollution incidents, including illegal discharges, accidental spills, and abandoned materials. The scope of work covers Orange County Flood Control District drainage facilities, creeks, and channels, as well as 31 agreement cities within Orange County. Emergency response requirements are stringent, requiring resource availability confirmation within 10 minutes, field supervisor arrival within 30 minutes, and full mobilization within 90 minutes. Award will be based on the lowest responsive and responsible bid, with specific cost preferences for certified Orange County Local Small Businesses (OCLSB) and Disabled Veteran Business Enterprises (DVBE), ranging from 5% to 8%. Qualified bidders must possess a California State Contractor License Board Class A and HAZ certification, a valid U.S. EPA Identification Number, and be Registered Trauma Scene Management Practitioners. Required submittals include a proposed staffing plan with resumes, a certification regarding debarment, and an Injury and Illness Prevention Program. All bids must be submitted electronically via the County's eProcurement Portal by the specified deadline.
County of Orange, OC Public Works

POSTED

3 days ago

DEADLINE

in 23 days
View Details