Department of the Interior Contracts
Agency code DOI ยท Contracts awarded by this agency
Department of the Interior contracts totaled $21.5B across 63,621 awards from FY2024 to FY2026. Obligations were up 3.9% in FY2026 vs FY2025, and Commercial and Institutional Building Construction (NAICS 236220) accounted for $2.2B, or 10% of the total.
Key figures
In FY2026, contract obligations were $6,819,395,352 across 25,381 awards with activity that year, a change of +3.9% from $6,566,490,975 in FY2025. From FY2024 to FY2026, obligations totaled $21,507,072,571 across 63,621 awards.
- Obligated in FY2026
- $6.8B
- Awards in FY2026
- 25,381
- Change vs FY2025
- +3.9%
- Total, FY2024 to FY2026
- $21.5B
Note: FY2026 ended on Sep 30, 2026. The Department of Defense publishes contract data with a 90-day delay, so FY2026 totals may still rise as late reports arrive.
Interior contract spending by year
Interior contract obligations per federal fiscal year (October to September). The table below lists the same numbers.
| Fiscal year | Obligated | Awards | Change |
|---|---|---|---|
| FY2026 | $6,819,395,352 | 25,381 | +3.9% |
| FY2025 | $6,566,490,975 | 30,733 | -19.1% |
| FY2024 | $8,121,186,244 | 34,536 | n/a |
About Interior contract spending
Interior contract obligations fell 16% from FY2024 ($8.1B) to FY2026 ($6.8B). FY2026 closed recently, and Defense Department contracts are reported up to 90 days late, so its total may still rise.
Spending is spread widely: the top 3 contractors account for 7% of the total. The largest Interior contractor, General Dynamics Information Technology, Inc., received $704M (3%).
What Interior buys most is commercial and institutional building construction (10%), water and sewer line and related structures construction (8%) and other heavy and civil engineering construction (8%).
The states with the most Interior contract work are Virginia, California and Maryland.
Top Interior contractors
Companies ranked by contract dollars obligated by the Department of the Interior: the largest Interior contractors.
| # | Contractor | Obligated | Share |
|---|---|---|---|
| 1 | General Dynamics Information Technology, Inc. | $704,196,380 | 3.3% |
| 2 | NW Construction, Inc | $454,170,541 | 2.1% |
| 3 | Acacia Center for Justice | $387,572,859 | 1.8% |
| 4 | Guidehouse Inc. | $367,207,131 | 1.7% |
| 5 | Family Endeavors, Inc. | $346,528,245 | 1.6% |
| 6 | Kiewit Infrastructure West Co. | $321,189,373 | 1.5% |
| 7 | Tepa Ec, LLC | $299,920,542 | 1.4% |
| 8 | Jacobs Project Management Co. | $271,036,182 | 1.3% |
| 9 | CDM Constructors Inc | $270,069,594 | 1.3% |
| 10 | Ames Federal Contracting Group LLC | $244,551,621 | 1.1% |
What Interior buys (by industry)
Industry codes (NAICS) on Interior contracts, ranked by dollars.
| # | Industry | Obligated | Share |
|---|---|---|---|
| 1 | Commercial and Institutional Building ConstructionNAICS 236220 | $2,220,434,936 | 10.3% |
| 2 | Water and Sewer Line and Related Structures ConstructionNAICS 237110 | $1,781,898,520 | 8.3% |
| 3 | Other Heavy and Civil Engineering ConstructionNAICS 237990 | $1,766,537,389 | 8.2% |
| 4 | Computer Systems Design ServicesNAICS 541512 | $1,703,767,491 | 7.9% |
| 5 | Other Computer Related ServicesNAICS 541519 | $1,591,857,227 | 7.4% |
| 6 | Administrative Management and General Management Consulting ServicesNAICS 541611 | $1,212,010,588 | 5.6% |
| 7 | Support Activities for ForestryNAICS 115310 | $797,794,552 | 3.7% |
| 8 | Custom Computer Programming ServicesNAICS 541511 | $721,892,946 | 3.4% |
| 9 | Engineering ServicesNAICS 541330 | $662,555,944 | 3.1% |
| 10 | Facilities Support ServicesNAICS 561210 | $535,319,358 | 2.5% |
Where Interior contract work is performed
States ranked by contract dollars, using the place of performance on each award.
| # | State | Obligated | Share |
|---|---|---|---|
| 1 | Virginia | $3,316,065,194 | 15.4% |
| 2 | California | $1,970,532,445 | 9.2% |
| 3 | Maryland | $1,616,742,719 | 7.5% |
| 4 | District of Columbia | $1,569,118,331 | 7.3% |
| 5 | Colorado | $1,476,364,098 | 6.9% |
| 6 | New Mexico | $1,345,111,014 | 6.3% |
| 7 | Arizona | $1,060,341,538 | 4.9% |
| 8 | Texas | $874,880,968 | 4.1% |
| 9 | Idaho | $697,333,552 | 3.2% |
| 10 | Wyoming | $552,314,858 | 2.6% |
Recent Interior contract awards
The latest contracts awarded by the Department of the Interior, newest first. Each award ID links to its record on USAspending.gov.
| Start date | Recipient | Agency and description | Amount | Record |
|---|---|---|---|---|
| Sep 28, 2026 | Waterfleet, LLC | Department of the InteriorGRCA SOUTH RIM EMRGENCY WATER HAULING | $8,000,000 | 140PS126P0049 |
| Sep 28, 2026 | The Delaware-Lackawanna Railroad, Co., Inc | Department of the InteriorSTEA - DL TRACK USE | $25,000 | 140P4526C0045 |
| Sep 28, 2026 | Fountain of Wealth LLC | Department of the InteriorNH-GREAT BAY NWR HVAC SYSTEM REPLACEMENT | $49,459 | 140FS326P0297 |
| Sep 28, 2026 | Federon Procurement Solutions | Department of the InteriorEO 14398 - INSTALL POND LINERS TISHOMINGO NFH | $323,081 | 140FGA26C0054 |
| Sep 26, 2026 | Clearfield Construction LLC | Department of the InteriorBIBE CONSTRUCT ASTRO VIEWING PLATFORM | $353,737 | 140PS126P0048 |
| Sep 26, 2026 | Pace Collaborative, PLLC | Department of the InteriorLIBO DESIGN QMIS 0002 SPRINKLER SYSTEM | $46,848 | 140PS126F0082 |
| Sep 26, 2026 | Justus Corporation | Department of the InteriorEO 14398 GWMP - BACKUP GENERATOR REPLACEMENT AND PREVENTATIVE MAINTENANCE | $296,192 | 140P8526P0075 |
| Sep 26, 2026 | Pannier Corporation | Department of the InteriorGRSM WAYSIDE KIOSK BULLETIN BOARDS | $14,230 | 140P5326P0027 |
| Sep 26, 2026 | Homeland Hub Consulting LLC | Department of the InteriorSEPTIC TANK/VAULT TOILET PUMP OUTS | $87,162 | 140P5326P0025 |
| Sep 26, 2026 | DHM Design Corporation | Department of the InteriorCOMPLETION OF EXISTING LANDSCAPE INV | $66,808 | 140P5226P0057 |
| Sep 26, 2026 | Gravois Boat Works, LLC | Department of the InteriorSWAMP SHARK VESSEL PR | $50,000 | 140P5226P0056 |
| Sep 26, 2026 | Coastal Environments, Inc. | Department of the InteriorEMERALD MOUND GEOPHYSICAL SURVEY | $48,934 | 140P5226P0055 |
| Sep 26, 2026 | D & H Enterprises LLC | Department of the InteriorNATC REPAIR MELROSE STORAGE BUILDING | $36,000 | 140P5226P0054 |
| Sep 26, 2026 | D & H Enterprises LLC | Department of the InteriorNATC RESTORE MELROSE WIDOWS WALK | $260,000 | 140P5226C0017 |
| Sep 26, 2026 | Dominguez Design-Build, Inc | Department of the InteriorREHABILITATE PERDIDO KEY RESTROOMS | $479,000 | 140P5226C0016 |
| Sep 26, 2026 | Awics Security & Investigations, Inc | Department of the Interior140P4526P0022: SECURITY GUARD SERVICE - MANHATTAN SITES (MASI), HAMILTON GRANGE NATIONAL MEMORIAL AND GENERAL GRANT NATIONAL MEMORIAL, NEW YORK, NY | $261,960 | 140P4526P0022 |
| Sep 26, 2026 | E. & M. O'Hara, Inc | Department of the Interior140P4526P0020: ELECTRICAL PLAN/NEWEL POST FIXTURE - THOMAS EDISON NATIONAL HISTORICAL PARK, WEST ORANGE, NJ | $4,392 | 140P4526P0020 |
| Sep 26, 2026 | E2 Project Management LLC | Department of the InteriorMAVA GEOARCHEOLOGICAL SURVEY | $65,000 | 140P4526F0030 |
| Sep 26, 2026 | Kolmist Group LLC | Department of the InteriorWORI REPLACE HVAC COMPONENTS M'CLINTOCK | $13,450 | 140P4526C0044 |
| Sep 26, 2026 | Ark Construction Management LLC | Department of the Interior140P4526C0032: REHABILITATION OF ROOFS - BUILDING 40, SANDY HOOK UNIT, GATEWAY ANTIONAL RECREATION AREA, FORT HANCOCK, NJ | $695,000 | 140P4526C0032 |
| Sep 26, 2026 | Ark Construction Management LLC | Department of the InteriorEO 14398 NATIONAL PARK SERVICE - INDEPENDENCE NATIONAL HISTORICAL (INDE) - INTERIOR FINISH REPAIRS AND SPRINKLER SYSTEM REMEDIATION AT THE BISHOP WHITE HOUSE | $212,622 | 140P4226C0025 |
| Sep 25, 2026 | FMW Solutions LLC | Department of the Interior140P4526P0021: K2 PYLE GENERATOR MAINTENANCE - STEAMTOWN NATIONAL HISTORIC SITE, SCRANTON, PA | $30,000 | 140P4526P0021 |
| Sep 25, 2026 | Historical Research Associates, Inc. | Department of the InteriorHISTORIC PROPERTY IDENTIFICATION: LITTLE PEND OREILLE NWR: UPPER WEBB KING | $46,077 | 140FS126F0106 |
| Sep 25, 2026 | Sugar Pine Consulting LLC | Department of the InteriorSEKI 326438 MITIGATE TREE HAZARDS, PHASE II INSPECTION SERVICES | $310,080 | 140PS126F0081 |
| Sep 25, 2026 | Hurtvet Subcontracting, Inc. | Department of the InteriorSAGU FIRE ALARM/SUPPRESSION INSPECTION/MAINT TASK ORDER | $18,752 | 140PS126F0080 |
How to win Interior contracts
Interior contracting opportunities are posted on SAM.gov, the free government site for federal bids. To bid, your business needs a free SAM.gov registration. Many Interior small business contracts are set aside for small firms, and the agencies' largest contractors often subcontract work to them.
Explore Interior contracts by industry, state and contractor
- Government construction contracts
- Government water and sewer line and related structures construction contracts
- Government other heavy and civil engineering construction contracts
- Government IT contracts
- Government computer services contracts
- Government contracts in Virginia
- Government contracts in California
- Government contracts in Maryland
- Government contracts in District of Columbia
- Government contracts in Colorado
- General Dynamics Information Technology government contracts
- Acacia Center for Justice government contracts
- Guidehouse government contracts
Frequently asked questions
- How much does Interior spend on contracts?
- The Department of the Interior obligated $21.5B on contracts from FY2024 to FY2026, across 63,621 contract awards, including $6.8B in FY2026. Figures are federal contract obligations reported on USAspending.gov.
- Who are the largest Interior contractors?
- By contract dollars from FY2024 to FY2026, the largest were General Dynamics Information Technology, Inc. ($704M), NW Construction, Inc ($454M) and Acacia Center for Justice ($388M).
- What does Interior buy the most?
- By contract dollars, Interior spends the most on commercial and institutional building construction (NAICS 236220, $2.2B), water and sewer line and related structures construction (NAICS 237110, $1.8B) and other heavy and civil engineering construction (NAICS 237990, $1.8B).
- Where is Interior contract work performed?
- The most Interior contract dollars went to work performed in Virginia ($3.3B), California ($2B) and Maryland ($1.6B).
- Is Interior contract spending growing?
- Interior contract obligations fell 16% from FY2024 ($8.1B) to FY2026 ($6.8B). FY2026 closed recently, and Defense Department contracts are reported up to 90 days late, so its total may still rise.
- Does Interior award contracts to small businesses?
- Yes. Like most federal agencies, Interior sets aside contracts for small businesses and has small business goals. Its Office of Small and Disadvantaged Business Utilization (OSDBU) can explain how it buys, and its open opportunities are posted on SAM.gov.