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 $76.5M from $14.7M to $91.2M.

Largest decline: NAICS 237990 — Other Heavy and Civil Engineering Construction reported a decline of $410.9M from $901.7M to $490.9M.

Largest reported increases

Ranked by absolute obligation movement
NAICS Preceding 12 months Latest 12 months Change
1NAICS 237130Power and Communication Line and Related Structures Construction23 preceding · 29 latest positive awards
$14.7M$91.2MUp $76.5MUp 519.5%
2NAICS 541513Computer Facilities Management Services61 preceding · 87 latest positive awards
$45.1M$89.3MUp $44.2MUp 98.1%
3NAICS 213112Support Activities for Oil and Gas Operations25 preceding · 26 latest positive awards
$20.8M$56.6MUp $35.7MUp 171.7%
4NAICS 541360Geophysical Surveying and Mapping Services108 preceding · 104 latest positive awards
$95.7M$121.2MUp $25.5MUp 26.6%
5NAICS 541330Engineering Services598 preceding · 488 latest positive awards
$174.2M$198.3MUp $24.1MUp 13.8%

Largest reported declines

Ranked by absolute obligation movement
NAICS Preceding 12 months Latest 12 months Change
1NAICS 237990Other Heavy and Civil Engineering Construction138 preceding · 149 latest positive awards
$901.7M$490.9MDown $410.9MDown 45.6%
2NAICS 236220Commercial and Institutional Building Construction648 preceding · 630 latest positive awards
$914.7M$663.5MDown $251.3MDown 27.5%
3NAICS 115310Support Activities for Forestry2,339 preceding · 532 latest positive awards
$310.4M$209.4MDown $101.1MDown 32.6%
4NAICS 237110Water and Sewer Line and Related Structures Construction171 preceding · 163 latest positive awards
$788M$689.7MDown $98.3MDown 12.5%
5NAICS 115210Support Activities for Animal Production125 preceding · 127 latest positive awards
$99.2M$48.8MDown $50.4MDown 50.8%
Scope and comparison rules

The latest period runs from Jul 28, 2025 through Jul 27, 2026. It is compared with Jul 28, 2024 through Jul 27, 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.