NIGP 28: The Trades: Electrical, Engineering, HVAC, Plumbing, and Welding
Category
Code facts
NIGP codes come from the NIGP Code (NIGP: The Institute for Public Procurement, maintained by Periscope Holdings), and state and local contract opportunities from the governments' procurement sites.
State & local contract opportunities
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Latest 50 of 15,726 listed here. See the rest on GovTribe.
Opportunities by state
| Rank | State | Open now | Posted, last 90 days |
|---|---|---|---|
| 1 | Florida | 27 | 159 |
| 2 | Texas | 29 | 144 |
| 3 | Georgia | 28 | 77 |
| 4 | California | 12 | 56 |
| 5 | Massachusetts | 3 | 31 |
| 6 | Michigan | 4 | 26 |
| 7 | Pennsylvania | 5 | 18 |
| 8 | Utah | 5 | 17 |
| 9 | Mississippi | 3 | 17 |
| 10 | Maryland | 5 | 12 |
| 11 | Arizona | 2 | 9 |
| 12 | Illinois | 0 | 9 |
| 13 | Colorado | 1 | 7 |
| 14 | Oregon | 1 | 7 |
| 15 | Connecticut | 1 | 6 |
| 16 | South Carolina | 2 | 5 |
| 17 | Missouri | 1 | 5 |
| 18 | New Jersey | 0 | 5 |
| 19 | Delaware | 0 | 4 |
| 20 | Kentucky | 0 | 4 |
| 21 | New Mexico | 0 | 4 |
| 22 | South Dakota | 0 | 4 |
| 23 | North Carolina | 3 | 3 |
| 24 | Ohio | 1 | 3 |
| 25 | Kansas | 0 | 3 |
| 26 | Wisconsin | 0 | 3 |
| 27 | Virginia | 1 | 2 |
| 28 | District of Columbia | 0 | 2 |
| 29 | Alabama | 0 | 1 |
| 30 | Nevada | 0 | 1 |
| 31 | New Hampshire | 0 | 1 |
| 32 | New York | 0 | 1 |
| 33 | Tennessee | 0 | 1 |
| 34 | West Virginia | 0 | 1 |
Show all 34
Codes under 28
Quick answers
What is NIGP 28?
NIGP 28 is The Trades: Electrical, Engineering, HVAC, Plumbing, and Welding, a category of the NIGP Commodity/
What codes are under NIGP 28?
NIGP 28 has 7 codes under it with their own GovTribe pages, including 031 Air Conditioning, Heating, and Ventilating Equipment, Parts and Accessories; 285 Electrical Equipment and Supplies, Except Cable and Wire; and 305 Engineering and Architectural Equipment, Surveying Equipment, Drawing Instruments, and Supplies.
Which states post the most state and local bids under NIGP 28?
The states with the most state and local contract opportunities under NIGP 28 posted in the last 90 days are Florida (159), Texas (144) and Georgia (77).
What is the latest state & local contract opportunity under NIGP 28?
The latest state & local contract opportunity under NIGP 28 is Specifications for the purchase of materials for recloser project from Florida, posted October 15, 2026.
On GovTribe
See everything under NIGP 28
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