Where Craftsmanship Meets Accountability
From clear communication to clean job sites and consistent follow-through, our work reflects the standards we live by. Property managers count on us not just for results, but for reliability at every step.
About Roussos Construction
At Roussos Construction, we don’t just renovate buildings — we protect investments, raise property values, and give multifamily owners peace of mind.
What began as a family-run general contracting business has evolved into one of Northern California’s most trusted names in multifamily renovation. Under the leadership of Demis Roussos, we’ve spent over three decades delivering high-quality work—on schedule, on budget, and with an unwavering commitment to craftsmanship and care.
But what really sets us apart?
It’s not just our craftsmanship. It’s how we show up, communicate, and follow through — with the same pride we’d bring to our own homes.
Meet the Team Behind Your Next Seamless Renovation
At Roussos Construction, we don’t just build out units—we build long-term relationships. Led by founder and president Demis Roussos, our team combines decades of hands-on expertise with a no-excuses approach to timelines, quality, and communication. We are focused on making your renovation easier, faster, and more profitable.
Demis Roussos
Demis founded Roussos Construction over 30 years ago, transforming it from a family-run flooring and painting business into one of Northern California’s most trusted names in multifamily renovation. His leadership emphasizes quality, reliability, and strong client relationships.
Demaci Roussos
Demaci plays a pivotal role in overseeing day-to-day operations, ensuring that projects align with the company's standards and client expectations. His leadership contributes to the seamless execution of multifamily renovations.
John Maniaks
John brings decades of commercial construction expertise to the team, with a focus on systems, process improvement, and large-scale project oversight. His background allows him to manage complex renovations with precision, ensuring quality control and client satisfaction at every step.
Mariam Klaib
Mariam oversees the financial operations of Roussos Construction, ensuring fiscal responsibility and transparency. Her expertise supports the company's sustainable growth and commitment to client satisfaction.
Douglas Siegfried
Douglas has worked in nearly every aspect of the construction process, giving him a comprehensive understanding of field operations, logistics, and client relations. He plays a critical role in managing day-to-day activities and ensuring projects are delivered with precision and care.
Matt Divine
Matt leads our sales and client acquisition team with a focus on long-term relationships, not quick wins. He understands the value of listening first, advising second—and brings a consultative approach to helping property managers, developers, and owners find the right solutions for their needs.
