Sovereign Building Maintenance At Sovereign Building Maintenance, we are a family-owned and operated company with over a decade of extensive experience in commercial and industrial cleaning, floor care, and carpet maintenance. We are fully insured and WSIB-compliant, giving our clients confidence in our professionalism, safety standards, and reliability. Our team is committed to delivering exceptional results, maintaining your facilities to the highest standards of cleanliness and presentation. By creating a spotless and welcoming environment, we help you make the best impression on your clients and employees alike. Contact us today for a free, no-obligation quote and experience the difference in quality and care. Proudly serving Thunder Bay and surrounding areas. more... See more text