Loading…

Search every US federal contract opportunity on SAM.gov, and draft winning RFP responses with AI.

Solutions

Contract search AI proposal writing Bid / no-bid scoring Buyer & market intelligence Forecast & recompetes Awards & competitors Teaming & partner network State & local contracts Pipeline & CRM

Find Contracts

All contracts Closing soon Recently posted Highest value Buyer Intelligence What’s coming up Who’s winning (awards)8(a) set-asides WOSB set-asides SDVOSB set-asides HUBZone set-asides

Agency opportunities

DoD contracts VA contracts HHS contracts DHS contracts DOE contracts GSA contracts DOT contracts NASA contracts

Tools & Pricing

AI Opportunity Scan Contract Pricing Benchmark Competitor & Incumbent Lookup Company Award Profile GovCon Market Explorer Supplier & Teaming Finder AI Pursuit Analyzer NAICS Code Lookup Set-Aside Eligibility Small Business Size Standard Acquisition Threshold Guide Bid / No-Bid Scorecard Bid ROI Calculator CMMC 2.0 / SPRS Estimator HUBZone Eligibility Checker Plans & pricing

Learn

Market Reports Blog Answers (Q&A)Resources Glossary A–Z Guides Compare tools 2026 data report

Company

About Contact sales Security & trust Careers WinAContract UK BidWriter UK GovCon — AI proposals eSourcing Data Privacy Terms Refunds

Services & network

Bid & capture consulting Registration & certifications GovCon training Supplier network Teaming & partnering Data & API Reports store

WinAContract is US-based and US-hosted — AI federal contract search and proposal writing software for US government contractors. Operated by eSourcing Data Ltd.

© 2026 eSourcing Data Ltd · info@winacontract.com

NAICS 531311

Top contractors in NAICS 531311

The 8 contractors with tracked federal awards in NAICS 531311, totalling $251,144,983. Ranked by award value.

See live NAICS 531311 opportunities →All contractors

1VENDOR RESOURCE MANAGEMENT, INC.$200,641,7311 awards
2LIMA CHARLIE, INC$27,005,40213 awards
3PARLIAMENT LLC$13,805,6185 awards
4AESTHETIC HOME INVESTMENTS LLC$7,618,8624 awards
5LEUMAS RESIDENTIAL LLC$1,224,3153 awards
6DGG RE INVESTMENTS LLC$456,8843 awards
7ALPINE COMPANIES, INC.$372,0081 awards
8IRIS DEVELOPMENT LLC$20,1631 awards