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SLSCO, LTD.

UEI: F1PMZXNJ7NM5CAGE: 5C2J9

SLSCO, LTD. is a federal contractor, registered under UEI F1PMZXNJ7NM5 and CAGE code 5C2J9. It has been awarded $3,280,142,600 across 65 federal contracts. Primary work spans Highway, Street, and Bridge Construction, Commercial and Institutional Building Construction, and All Other Specialty Trade Contractors. Top awarding agencies include Department Of Defense, Department Of Homeland Security, and Department Of Defense (dod).

Contact Information

Registration and classification details

Registration

UEI Code

F1PMZXNJ7NM5

CAGE Code

5C2J9

Entity Structure

Partnership or Limited Liability Partnership

Established

N/A

Business Classifications

2X

NAICS Codes

212321Construction Sand and Gravel Mining
236115New Single-Family Housing Construction (except For-Sale Builders)
236116New Multifamily Housing Construction (except For-Sale Builders)
236118Residential Remodelers
236210Industrial Building Construction
+8 more

Federal Contracting Overview

Award totals, agency breakdown, NAICS distribution, and geographic footprint.

AI Capability Profile

SLSCO, LTD. specializes in mission-critical construction and emergency support services for federal agencies, with deep expertise in commercial and institutional building construction, highway and bridge infrastructure, and civil engineering projects. The firm delivers turnkey solutions for defense ...

SLSCO, LTD. specializes in mission-critical construction and emergency support services for federal agencies, with deep expertise in commercial and institutional building construction, highway and bridge infrastructure, and civil engineering projects. The firm delivers turnkey solutions for defense and homeland security installations, including aircraft aprons, border infrastructure, and facility upgrades, often under time-sensitive operational conditions. Their technical capabilities encompass site preparation, structural framing, paving, drainage systems, and emergency response logistics, with demonstrated experience in austere and international environments. SLSCO also provides specialized relief services, including rapid deployment of temporary facilities and operational support during border emergencies, showcasing adaptability in high-stakes, mission-essential environments. The company maintains a strong and consistent relationship with the Department of Defense and the Department of Homeland Security, delivering construction and emergency services for military bases, immigration custody facilities, and border security installations. Work for the DoD includes large-scale infrastructure upgrades at overseas installations, while DHS contracts focus on rapid-response construction and operational support tied to border management and humanitarian logistics. These partnerships reflect a pattern of trusted execution on complex, security-sensitive projects requiring strict compliance and operational resilience. SLSCO’s primary industry focus lies in specialty trade contracting, particularly commercial building construction (NAICS 236220) and heavy civil engineering (NAICS 237310, 237990), positioning them as a niche provider for federal infrastructure requiring precision, durability, and regulatory adherence. Their work in roofing, security services, and emergency relief further demonstrates a diversified yet focused footprint in mission-critical construction and support sectors. As a small business entity based in Galveston, Texas, SLSCO operates without federal certifications but leverages regional expertise and agile project execution to serve federal clients across high-priority domains. Their geographic positioning supports rapid mobilization to coastal and border regions, enhancing responsiveness to national security and infrastructure demands.

Key Performance Metrics

Awards Count

0

All time

Active

0

Currently performing

Completed

0

Past period of performance

Total Awards

All time

Contracts

Prime · all time

Subcontracts

Sub · all time

Grants

Prime · all time

Subgrants

Sub · all time

Award Analytics & Distribution

Awards by Agency
Department Of Defense$2.2B66.4%
Department Of Homeland Security$517.9M15.8%
$466.4M14.2%
Department Of Defense (dod)$102.2M3.1%
Other agencies (5 agencies, <0.5% each)$13.1M0.4%
Awards by NAICS
Export
237310 - Highway, Street, and Bridge Construction$2.0B59.9%
236220 - Commercial and Institutional Building Construction$693.6M21.2%
238990 - All Other Specialty Trade Contractors$604.2M18.5%
Others - Other NAICS codes (8 codes, <0.5% each)$16.0M0.5%
Awards by Agency Over Time
Export
Awards by Place of Performance

Open opportunities in SLSCO, LTD.'s top NAICS codes and agencies

NAICS: 236220
New
SLED
Checkpoint Security Grill Replacement - DBBThe contract anticipates the complete replacement of the Checkpoint 5 security grill at the Port of Seattle, encompassing full design, permitting, and construction services under a design-bid-build delivery method. The scope requires a comprehensive site assessment, development of design drawings and technical specifications that adhere to TSA CRPG Section 3-5 standards, and submission for regulatory review and permit acquisition. The project includes the safe removal and proper disposal of the existing grill, followed by the fabrication and installation of a new system that must be seamlessly integrated with existing structural, electrical, and security badge access infrastructure. All work must be coordinated with relevant stakeholders to ensure strict compliance with security protocols and to minimize disruption to airport operations. The contracting entity is the Aviation Project Management Group under the Port of Seattle, with the project classified under NAICS code 236220 for commercial and institutional building construction. While the solicitation number is not provided, the forecast was posted on July 18, 2026, and will be managed by Yanet Maldonado as the primary point of contact and Collette Deardorff as the project manager. The work is to be performed at Checkpoint 5 within the Port of Seattle facility, requiring close collaboration with aviation and security personnel to maintain operational continuity throughout the project lifecycle. Contractors will be expected to demonstrate experience with high-security aviation infrastructure and regulatory compliance in a live operational environment.
Aviation Project Management Group

POSTED

about 3 hours ago

DEADLINE

N/A
View Details
NAICS: 237310
New
SLED
Fisherman’s Terminal (FT) Entry and Exit Paving RedevelopmentThe Fishermen’s Terminal Entry Redevelopment Project will comprehensively upgrade the entry and exit drives along 19th Ave W, the former Downie Building C-14 footprint, and surrounding parking areas. Existing deteriorated pavement will be milled and overlaid, while stormwater systems will be fully replaced and expanded to divert runoff from combined sewer lines to dedicated storm drains, with water quality treatment incorporated where qualifying surfaces are replaced. The remaining slab from Phase 1 will be demolished and reconfigured into a mix of new parking spaces and green space designed as a pollinator habitat, potentially integrating a stormwater treatment facility. A new irrigation system will support the landscaping, including the median along the entry drive, and electric vehicle charging stations will be installed in the newly configured parking area. Protected two-way bike lanes will be added to connect the terminal entry directly to the existing West Wall bike path, enhancing active transportation access. Pedestrian connectivity will be improved with safer routes to the intersection of 21st Ave W and W Emerson Pl, as well as to the nearby King County Metro bus stop. Lighting will be upgraded throughout the new parking area and along the pedestrian and bike path corridors to ensure safety and visibility. Comprehensive wayfinding signage will be installed to guide pedestrians and cyclists through the redeveloped zone. The project is managed by the Port of Seattle through its Waterfront Project Management office, with a NAICS code of 237310, and is scheduled for release in mid-2026.
Waterfront Project Management

POSTED

about 3 hours ago

DEADLINE

N/A
View Details
NAICS: 237310
New
SLED
Asphalt Paving & Striping Portwide Unit Price 2026The contract involves comprehensive asphalt paving, striping, and related infrastructure improvements across multiple sites within the Seattle-Tacoma International Airport, Maritime Properties, and surrounding areas. Work includes new asphalt placement, patching, overlays with fabric, crack sealing, seal coating, profile grinding, removal and disposal of grinding spoils, stripping of existing markings, surface preparation for new striping, concrete and asphalt saw cutting and coring of non-hazardous materials, installation of concrete wheel stops, curb repair and replacement, sidewalk lifting and leveling, and upgrades to road drainage systems, some of which may require permits. All tasks are to be executed under a unit price structure for the 2026 fiscal period. The contract is issued by the Port of Seattle through its Port Construction Services division, with performance expected throughout the Port’s operational precincts. Primary point of contact is Heather Bowden, reachable via email and phone, with Lesley Miles serving as Project Manager. The solicitation, identified under NAICS code 237310 for Highway, Street, and Bridge Construction, was posted in July 2026 and is accessible via the Port’s online portal. No set-aside designation or solicitation number is provided, indicating this is a forecast notice for future procurement activity.
Port Construction Services

POSTED

about 3 hours ago

DEADLINE

N/A
View Details