W. P. MAHON, INC. (DE)
Registration and award facts
SAM.gov registration as of
- Net obligations since FY2008
- $6.90M
- $6,903,133under this UEI
- FY2026 obligations
- $0†
- Provisional
- Awards and orders
- 53
- with positive net obligations2 IDV vehicles held
- Latest action
- Oct 14, 2025
- SAM.gov registration
- Inactive
- Registration expiration date Dec 17, 2015
Registration
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Business start date
- Feb 19, 2002 (24 years)
- Location
- Wilmington, DE
- State of incorporation
- Delaware
- Purpose of registration
- All Awards
- Website
- wpmahon.com
† FY2026 obligations (provisional; DoD awards signed after Jul 26, 2026 are not yet public).
Source: SAM.gov entity registration and FPDS contract actions recorded under UEI X2SYT2X38N91. GovChime does not check exclusions.
Performance
Net obligations recorded under this UEI since FY2008. Top lists show the largest five by share of this vendor's net obligations; the shares do not sum to 100%.
Net obligations by fiscal year of action
- FY2014: $12,750
- FY2013: $740,682
- FY2012: $458,654
- FY2011: $681,045
- FY2010: $3,586,127
- FY2009: $592,372
- FY2008: $831,502
Total across 7 fiscal years: $6,903,133
Top awarding agencies
- General Services Administration$4,958,770, 71.8%
- Department of Homeland Security$1,012,490, 14.7%
- Department of Defense$931,872, 13.5%
Top awarding sub-agencies
- Public Buildings Service$4,958,770, 71.8%
- U.S. Coast Guard$1,012,490, 14.7%
- Department of the Army$790,100, 11.4%
- Department of the Navy$141,772, 2.1%
Top NAICS by obligations
- 238160Roofing contractors$3,446,275, 49.9%
- 236220Commercial and institutional building construction$1,065,756, 15.4%
- 238220Plumbing, heating, and air-conditioning contractors$1,043,171, 15.1%
- 561790Other services to buildings and dwellings$587,800, 8.5%
Top product and service codes by obligations
- Z111Maint-rep-alt/office bldgs$4,140,516, 60.0%
- Z199Maint-rep-alt/misc bldgs$974,990, 14.1%
- J041Maint/repair/rebuild of equipment- refrigeration, air conditioning, and air circulating equipment$587,800, 8.5%
- Z2AARepair or alteration of office buildings$420,304, 6.1%
- Z299Maint, rep/alter/all other$345,730, 5.0%
Capabilities
NAICS codes
- 238160ROOFING CONTRACTORS(primary)Small
- 236118RESIDENTIAL REMODELERSSmall
- 236210INDUSTRIAL BUILDING CONSTRUCTIONSmall
- 236220COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTIONSmall
- 237130POWER AND COMMUNICATION LINE AND RELATED STRUCTURES CONSTRUCTIONSmall
- 238130FRAMING CONTRACTORSSmall
Show all 23 NAICS codes17 more NAICS codes
- 238140MASONRY CONTRACTORSSmall
- 238170SIDING CONTRACTORSSmall
- 238190OTHER FOUNDATION, STRUCTURE, AND BUILDING EXTERIOR CONTRACTORSSmall
- 238210ELECTRICAL CONTRACTORS AND OTHER WIRING INSTALLATION CONTRACTORSSmall
- 238220PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORSSmall
- 238290OTHER BUILDING EQUIPMENT CONTRACTORSSmall
- 238320PAINTING AND WALL COVERING CONTRACTORSSmall
- 238350FINISH CARPENTRY CONTRACTORSSmall
- 238390OTHER BUILDING FINISHING CONTRACTORSSmall
- 238990ALL OTHER SPECIALTY TRADE CONTRACTORSSmall
- 423310LUMBER, PLYWOOD, MILLWORK, AND WOOD PANEL MERCHANT WHOLESALERSSmall
- 423330ROOFING, SIDING, AND INSULATION MATERIAL MERCHANT WHOLESALERSSmall
- 444190OTHER BUILDING MATERIAL DEALERSSmall
- 541330ENGINEERING SERVICES
- 561210FACILITIES SUPPORT SERVICESSmall
- 561790OTHER SERVICES TO BUILDINGS AND DWELLINGSSmall
- 562211HAZARDOUS WASTE TREATMENT AND DISPOSALSmall
Small: small business for that NAICS, self-certified in SAM.gov registration.
SBA certifications
No certification in the SBA profile data.
Business types self-reported in SAM.gov registration:
- Women-Owned Small Business
- Women-Owned Business
- DOT Certified DBE
Product and service codes (PSC)
- 5650ROOFING AND SIDING MATERIALS
Contracts
Latest awards and orders
- HSCG8310CPFC008Definitive contractDepartment of Homeland SecurityU.S. Coast GuardLatest action
- GS03P12CDD0041Indefinite delivery contract (IDC)VehicleGeneral Services AdministrationPublic Buildings ServiceLatest action
- GS03P13PSP0013PoGeneral Services AdministrationPublic Buildings ServiceLatest action
- 0006DoDepartment of DefenseDepartment of the NavyLatest action
- 0005Delivery orderunder an indefinite delivery contract (IDC)Department of DefenseDepartment of the NavyLatest action
- 0004Delivery orderunder an indefinite delivery contract (IDC)Department of DefenseDepartment of the NavyLatest action
- 0003Delivery orderunder an indefinite delivery contract (IDC)Department of DefenseDepartment of the NavyLatest action
- 0002Delivery orderunder an indefinite delivery contract (IDC)Department of DefenseDepartment of the NavyLatest action
- GS03P12QHP0072PoGeneral Services AdministrationPublic Buildings ServiceLatest action
- 0001Delivery orderunder an indefinite delivery contract (IDC)Department of DefenseDepartment of the NavyLatest action
Contact Info
As of . Source: SAM.gov Points of Contact.
SAM.gov registration for W. P. MAHON, INC. lists a physical address and a separate mailing address, along with 6 verified points of contact. Past Performance contacts are the recommended outreach channel for due-diligence references; Government Business contacts handle procurement-facing correspondence.
Source: SAM.gov entity registration. Contacts displaying numeric or placeholder names have been filtered (defense-in-depth).
Physical Address
215 RODMAN ST
WILMINGTON, DE, 19805
USA
Mailing Address
P O BOX 3333
WILMINGTON, DE, 19804
USA
Government Business Contact
KATHLEEN M MAHON
215 RODMAN STREET
WILMINGTON, DE, 19805
USA
Electronic Business Contact
KATHLEEN M MAHON
215 RODMAN STREET
WILMINGTON, DE, 19805
USA
Past Performance Contact
KATHLEEN M MAHON
215 RODMAN STREET
WILMINGTON, DE, 19805
USA
Government Business Alternate Contact
KATHLEEN M MAHON
215 RODMAN STREET
WILMINGTON, DE, 19805
USA
Electronic Business Alternate Contact
KATHLEEN M MAHON
215 RODMAN STREET
WILMINGTON, DE, 19805
USA
Past Performance Alternate Contact
KATHLEEN M MAHON
215 RODMAN STREET
WILMINGTON, DE, 19805
USA
Additional Details
As of . Source: SAM.gov Entity Registration.
W. P. MAHON, INC. is currently suspended or debarred from federal contracting per SAM.gov. Current SAM.gov registration expires December 17, 2015.
Source: SAM.gov entity registration (FAR responses, registration status). Always verify active exclusions against the authoritative record on SAM.gov before contract award.
Compliance & Risk Assessment
Source: SAM.gov FAR responsesSuspension/Debarment Status
SAM.gov registration reports an active exclusion
Public Display
Entity information is publicly displayed
Disaster Relief Registry
Not registered for disaster relief
Bonding Information
No bonding information provided
EDI
Not declared in SAM.gov
Business Structure
Source: SAM.govRegistration Details
Source: SAM.govInitial Registration
Last Update
Registration Activation
Fiscal Year End
Country of Incorporation
Congressional District
Other contractors in Delaware with primary NAICS 238160
- Yellowfin Roofing LLCHockessin, DE
- P & C Roofing IncNew Castle, DE
- RKJ Construction IncWilmington, DE