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Agencies › Department of the Interior

Department of the Interior (DOI): contract opportunities and spending

112 open opportunities from Department of the Interior on SAM.gov, refreshed nightly and sorted by response deadline, with its contract spending, top contractors and expiring contracts below.

112open solicitations
$4.6Bobligated in FY2026
8,069contracts ending within 18 months

Open solicitations

Open any solicitation for a free AI read of its package — deal-breakers and risks, each quoted from the page it came from. With a free account, FedSift also builds its compliance matrix.

How DOI spends

FY2021$3.9B
FY2022$7.7B
FY2023$7.3B
FY2024$6.3B
FY2025$5.3B
FY2026$4.6B
FY2027*$38.7M
Contract obligations by federal fiscal year (October–September), from USASpending.gov award data. IDIQ ceilings are excluded. * The current year is partial, and USASpending lags 4–8 weeks.

Top contractors at DOI

Summed across sub-agencies from each one's top 50 contractors, so totals are a lower bound and no market share is shown.

What DOI buys

NAICSIndustryObligations, 3 FYsActions
237990Other Heavy and Civil Engineering Construction$1.2B168
236220Commercial and Institutional Building Construction$1.1B884
237110Water and Sewer Line and Related Structures Construction$848.7M224
541512Computer Systems Design Services$593.7M164
541519Other Computer Related Services$504.7M1,079
115310Support Activities for Forestry$501.2M3,729
541611Administrative Management and General Management Consulting Services$351.4M325
541330Engineering Services$305.9M694
481211Nonscheduled Chartered Passenger Air Transportation$256.8M910
237310Highway, Street, and Bridge Construction$245.0M216

DOI contracts expiring in the next 18 months

8,069 contracts worth $12.2B end within 18 months. The largest:

IncumbentBuyerWhatValueEndsEst. solicitationRecord
GUIDEHOUSE INC.Departmental Offices541512 Computer Systems Design Services$449.6M31 December 2026Now / imminentDetails
CDM CONSTRUCTORS INCReclamation237110 Water and Sewer Line and Related Structures Construction$364.0M28 February 2027Now / imminentDetails
DEEP MILE NETWORKS LLCDepartmental Offices611430 Professional and Management Development Training$334.9M29 October 2026Now / imminentDetails
LUMEN TECHNOLOGIES GOVERNMENT SOLUTIONS, INC.Departmental Offices517110 Wired Telecommunications Carriers$247.0M31 March 2027Now / imminentDetails
STRONGHOLD ENGINEERING INCNPS237110 Water and Sewer Line and Related Structures Construction$226.4M08 January 2028~Q3 2027Details
TEPA EC, LLCBureau of Indian Affairs and Bureau of Indian Education236220 Commercial and Institutional Building Construction$219.6M07 December 2027~Q2 2027Details
PLANET TECHNOLOGIES, INC.Departmental Offices541519 Other Computer Related Services$201.6M30 November 2026Now / imminentDetails
MAGELLAN FEDERAL, INC.Departmental Offices541611 Administrative Management and General Management Consulting Services$153.7M14 May 2027~Q4 2026Details
NW CONSTRUCTION, INCReclamation237990 Other Heavy and Civil Engineering Construction$139.3M31 December 2026Now / imminentDetails
GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC.Departmental Offices541512 Computer Systems Design Services$138.0M17 December 2026Now / imminentDetails

Every expiring DOI contract →

Contracts and task orders from USASpending.gov (FPDS) whose period of performance ends within 18 months, valued at $25K or more, excluding IDIQ ceilings and government-owned, contractor-operated facility contracts. Co-terminous orders from the same vendor, agency, NAICS and PSC ending in the same month are grouped. The solicitation date is an estimate (about six months before the contract ends): FedSift does not know whether a follow-on has been posted, so check SAM.gov.

Open solicitations by set-aside

Set-asideOpen
Unrestricted (full and open)53
Small business49
Other restricted set-asides8
8(a)2

From the set-aside SAM.gov declares on each open notice.

Sub-agencies

Departmental Offices (55)NPS (22)BIA (11)BLM (8)Reclamation (8)US Geological Survey (5)US Fish and Wildlife Service (2)Office of Surface Mining, Reclamation and Enforcement (1)

Who wins work at DOI?

FedSift's Agency Intelligence shows how DOI spends by office, where its set-aside dollars flow, its buying offices and contacts, and which incumbent contracts expire next. Free plan available, no credit card.

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Browse by agency

DoD (5,730) · VA (345) · DHS (149) · USDA (120) · DOI (112) · DOE (106) · HHS (89) · GSA (80) · DOJ (78) · NASA (77) · State Department (65) · DOT (54) · DOC (33) · Treasury (20) · EPA (16) · Postal Service (7) · Administrative Office of the US Courts (6) · Millennium Challenge Corporation (5) · NSF (5) · United States Government Publishing Office (5) · Federal Deposit Insurance Corporation (4) · HUD (4) · Library of Congress (4) · Export-Import Bank of the US (3)

Browse by NAICS code

336413 (518) · 336412 (239) · 541715 (214) · 236220 (180) · 332919 (165) · 332911 (155) · 237990 (144) · 334412 (116) · 332510 (115) · 541330 (113) · 334511 (111) · 334419 (110) · 339991 (109) · 332722 (90) · 336611 (88) · 335931 (80) · 334220 (79) · 333998 (72) · 333618 (68) · 333613 (67) · 335311 (65) · 335312 (62) · 531120 (60) · 332994 (56)

Browse by set-aside

Small Business8(a)HUBZoneSDVOSBVOSBWOSBEDWOSB