Harris County construction: bids, contractors and projects
TxDOT lettings, listed contractors and project news for Harris County, Texas, updated daily from public records.
Harris County is part of our Houston District coverage area and falls under TxDOT Houston District, headquartered in Houston. The public records we draw on list 4,613 construction contractors with a Harris County address: 116 TxDOT-qualified bidders and 4,497 TDLR-licensed specialty contractors. The largest single group is TDLR Air Conditioning & Refrigeration Contractor (2,752). Most are based in Houston, Spring, Katy.
TxDOT's statewide letting schedule currently has 4 upcoming proposals in Harris County, the next on Nov 3, 2026. TxDOT districts also hold their own local lettings for smaller contracts, so check the district page too.
Upcoming TxDOT lettings in Harris County
| Letting | Proposal | Major work type | Documents |
|---|---|---|---|
| Nov 3, 2026 | 11263009 | Landscape & Scenic Enhancement 路 IH 10 (+2 projects) | |
| Nov 3, 2026 | 11264008 | Routine Maintenance Project - Sealed 路 IH0610 | |
| Nov 3, 2026 | 11264010 | Routine Maintenance Project - Sealed 路 IH0069 | |
| Nov 4, 2026 | 11264209 | Routine Maintenance Project - Sealed 路 IH0610 |
Contractors based in Harris County
Texas has no statewide general contractor license. Counts combine TxDOT's public vendor list (firms qualified to bid TxDOT work) with TDLR's open license data for air conditioning, electrical, elevator, appliance installation, electrical sign and water well contractors with a Harris County address. Use them to find primes to team with or subs to price your bid.
- TDLR Air Conditioning & Refrigeration Contractor: 2,752
- TDLR Electrical Contractor: 1,464
- TDLR Electrical Sign Contractor: 106
- TDLR Appliance Installation Contractor: 93
- TxDOT Prequalified Prime Contractor (Confidential Questionnaire): 59
- TxDOT Qualified Bidder (Bidder's Questionnaire): 48
- TDLR Elevator Contractor: 47
- TDLR Water Well Driller/Pump Installer: 35
- TxDOT Qualified Maintenance Contractor: 9
Find Harris County subcontractors Find Harris County general contractors
Harris County project news
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How to bid public work in Harris County
State highway work in Harris County is let by TxDOT. Most contracts go through the monthly statewide letting in Austin, and the Houston District also holds local lettings for smaller jobs (district page). Primes must qualify with TxDOT before they can get a proposal, and subcontractors don't need TxDOT prequalification. See how to bid TxDOT contracts.
State agency and university solicitations over $25,000 are posted on the Electronic State Business Daily (see the ESBD and CMBL guide). County, city and school district projects are advertised on each government's own procurement portal. Before you bid, check which trade licenses apply (licensing guide) and your payment protections (lien and bond basics).
Statewide rules that apply here
Nearby counties
Houston District region: Brazoria 路 Fort Bend 路 Galveston 路 Montgomery 路 Waller
Also in TxDOT District 12: (same as above)