Paragon Services Janitorial. LLC (PSJ) maintains many of Southern California’s landmark properties. Driven by a commitment to exceed all metrics of performance while advocating our partners’ interest, PSJ has become the premier janitorial provider for many of San Diego’s largest property management firms and building owners. We take great pride that our success is directly related to our customers’ confidence in our work and look forward to the opportunity to prove to you why we have earned our standing as a leader in the building maintenance industry.