LJA Engineering Inc.
Houston, TX Doing business as LJA Engineering & Surveying Inc. LJA Engineering
- UEI
- NFSNJ6H9MLP5
- CAGE
- 5SZM5
- Primary NAICS
- 541330 Engineering Services
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- NAICS codes registered in SAM.gov
- Corporate family
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LJA Engineering Inc.
NFSNJ6H9MLP5
- LJA Environmental Services, LLC X7ACENSXB8L5
- LJA Infrastructure, Inc. KF4JBNLT1MU3
- LJA Surveying, Inc. LC4XKU9A9J59
- The WLB Group, Inc. SDBJN5MJT9E9
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LJA Engineering Inc.
NFSNJ6H9MLP5
- SAM.gov registration date
- Physical address
- 3600 W Sam Houston Pkwy S Suite 600, Houston, TX 77042, USA
- Website
- lja.com
- Founded
- 1972
- Employees
- 1K-5K
- Estimated annual revenue
- $250M-$500M
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- Civil Engineering
- SIC code
- 87 Engineering & Management Services
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Lmda technical committee chairperson | ENDIST Chicago | $73,091 |
About LJA Engineering Inc.
LJA Engineering Inc., a for-profit parent corporation based in Houston, Texas, operates as a subcontractor (86% of recent awards) delivering civil and structural engineering, surveying, and stormwater infrastructure services to federal agencies and their prime contractors. The vendor holds minimal SBA designations and competes in full-and-open procurement channels; recent work includes subcontract delivery of civil and structural engineering for the Houston Ship Channel Improvement Project Segment 3 under prime McCarthy Building Companies, Inc., and multiple sub-grant awards for stormwater drainage improvement and culvert repair across Harris County, Texas.
The corporate structure comprises four subsidiaries — LJA Infrastructure Inc., LJA Surveying Inc., The WLB Group Inc., and LJA Environmental Services LLC — each carrying capability framing aligned to the parent's service portfolio. Infrastructure, Surveying, and Environmental Services subsidiaries position the vendor across civil engineering, surveying, and environmental compliance work, though recent awards in the source do not isolate subsidiary-level attribution.
Activity in the source data shows sparse federal engagement. The vendor reports seven total awards across prime and sub work, with one prime award and six sub awards, spanning 2018 to 2024. The most recent awards cluster in late 2024 — a subcontract for the Houston Ship Channel project in October 2024 and five grant sub-awards in November and December 2024 for stormwater and culvert work. Combined potential value across all awards sits at $73 thousand, but combined dollars obligated reach $676 thousand, indicating that actual invoicing on smaller sub-awards has exceeded the potential-value baseline by a material margin. Customer concentration is thin; the source names the Department of the Army Corps of Engineers and its Engineering District Chicago entity, accounting for the full recorded potential value of $73 thousand. The two customer agencies noted account for 29% of the award count in the source coverage window, and the Engineering District Chicago entity anchors 100% of the combined potential value shown. No parent contract vehicles, GWACs, BPAs, or IDIQs are named in the source, indicating the vendor does not hold seats on government-wide vehicles and pursues work through direct agency procurement or principal-contractor teaming arrangements.
Quick answers
What is LJA Engineering Inc.'s UEI?
LJA Engineering Inc.'s Unique Entity ID (UEI) in SAM.gov is NFSNJ6H9MLP5.
What is LJA Engineering Inc.'s CAGE code?
LJA Engineering Inc.'s CAGE code is 5SZM5.
What is LJA Engineering Inc.'s primary NAICS code?
LJA Engineering Inc.'s primary NAICS code is 541330 (Engineering Services).
Where is LJA Engineering Inc. located?
LJA Engineering Inc.'s physical address in SAM.gov is 3600 W Sam Houston Pkwy S Suite 600, Houston, TX 77042, USA.
Is LJA Engineering Inc. registered in SAM.gov?
Yes. LJA Engineering Inc.'s SAM.gov registration is active through November 12, 2026.
What is LJA Engineering Inc.'s most recent federal award?
LJA Engineering Inc.'s most recent federal contract award is Lmda technical committee chairperson (W912P618P0007), from ENDIST Chicago, on May 7, 2018.
On GovTribe
See LJA Engineering Inc.'s full federal record
- Federal contract awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
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