Agencies

Department of the Interior capture intelligence by NAICS

See which NAICS markets at Department of the Interior reported the largest obligation gains and declines. Compare prime contractors, buying methods, award activity, and lifecycle signals in each market.

113 published NAICS profiles

Latest 12 months vs. preceding 12 months

Where reported obligations moved

Latest period

The following are the largest material movements among 108 comparable NAICS profiles on this page.

Largest increase: NAICS 237130 — Power and Communication Line and Related Structures Construction reported an increase of $76.8M from $14.5M to $91.4M.

Largest decline: NAICS 237990 — Other Heavy and Civil Engineering Construction reported a decline of $382.2M from $884.9M to $502.7M.

Largest reported increases

Ranked by absolute obligation movement
NAICS Preceding 12 months Latest 12 months Change
1NAICS 237130Power and Communication Line and Related Structures Construction24 preceding · 31 latest positive awards
$14.5M$91.4MUp $76.8MUp 529.4%
2NAICS 325998All Other Miscellaneous Chemical Product and Preparation Manufacturing18 preceding · 24 latest positive awards
$45.2M$114.1MUp $68.9MUp 152.4%
3NAICS 541513Computer Facilities Management Services64 preceding · 84 latest positive awards
$47.4M$87.4MUp $40MUp 84.4%
4NAICS 213112Support Activities for Oil and Gas Operations26 preceding · 24 latest positive awards
$21.8M$56.2MUp $34.4MUp 157.7%
5NAICS 541330Engineering Services588 preceding · 488 latest positive awards
$172.7M$197.8MUp $25.1MUp 14.5%

Largest reported declines

Ranked by absolute obligation movement
NAICS Preceding 12 months Latest 12 months Change
1NAICS 237990Other Heavy and Civil Engineering Construction136 preceding · 153 latest positive awards
$884.9M$502.7MDown $382.2MDown 43.2%
2NAICS 236220Commercial and Institutional Building Construction642 preceding · 629 latest positive awards
$927.9M$650.2MDown $277.7MDown 29.9%
3NAICS 115310Support Activities for Forestry2,641 preceding · 549 latest positive awards
$331.4M$215.3MDown $116.1MDown 35%
4NAICS 237110Water and Sewer Line and Related Structures Construction167 preceding · 165 latest positive awards
$790.9M$686.5MDown $104.4MDown 13.2%
5NAICS 115210Support Activities for Animal Production126 preceding · 129 latest positive awards
$100M$48MDown $52MDown 52%
Scope and comparison rules

The latest period runs from Aug 8, 2025 through Aug 7, 2026. It is compared with Aug 8, 2024 through Aug 7, 2025.

Rankings cover this page’s 113 published profiles. A profile must contain at least 10 positive-obligation awards in each period, at least $1M in preceding-period net obligations, nonnegative latest-period net obligations, and at least $1M of absolute movement to appear.

Net obligations include deobligations and corrections. A historical increase or decline does not establish market attractiveness, requirement demand, future buying intent, or a forecast. Green and red indicate direction only, not favorability.

INTERIOR directory

Department of the Interior spending by NAICS

Choose a NAICS market to inspect its prime contractors, buying methods, award activity, and lifecycle signals.

Browse all NAICS codes

This directory lists available market profiles, not every NAICS in which the agency has reported obligations. Review the methodology on each market page for coverage and interpretation details.