In construction, it’s easy to focus on tools, timelines, and trades – but we believe the strength of any build lies in the people behind it. At Riverwall, we’ve worked hard to build a culture that feels like family – strong, respectful and focused on doing great work together.
Established in 1987, Riverwall Constructions is a family-owned business with a long and respected history in the Australian insurance industry.
We specialise in emergency make safes, catastrophe response, and restoration for the insurance industry, including commercial, heritage and major building works. We work across the private, and commercial, sectors – handling everything from day-to-day repairs to complex, large-scale builds. Our approach is hands-on, personal, and grounded in doing the right thing, even when it’s not the easiest path. Whether we’re helping someone get back on their feet or managing a major project, we bring not just experience, but care and commitment to every job.
Our clients include insurance companies, homeowners, loss adjusters, councils, government bodies, and corporate firms. With offices in Sydney and Brisbane, we’ve built a strong presence across Eastern Australia and continue to grow through the relationships we’ve earned over decades of consistent, honest work.
Committed to excellence, sustainability and community in our comprehensive construction services.
To be the trusted builder admired by our customers, valued by our employees, and respected by our stakeholders.
Riverwall Constructions is here to deliver - not just with the quality of our work but with the client expectations that come with it. Our mission is to maintain trust through exceptional performance and communication.
Our values create a culture rooted in integrity, respect, excellence and innovative practices.
in the quality of our work
in every decision we make
in character and in our relationships
to achieve shared success
practices to protect our people and projects
Discover Riverwall’s legacy through our diverse portfolio of completed projects, showcasing excellence across various Australian construction landscapes.
Riverwall offers comprehensive construction solutions for commercial and strata needs, ensuring quality and efficiency in every project undertaken.
Driving innovation and integrity, our executive team embodies Riverwall’s commitment to industry leadership. Hover over the image to view the bio.
Back in 1987, Sam Mamasioulas started what would become Riverwall Constructions. What began as a small family effort has grown steadily over the years, with Sam’s steady leadership shaping the way forward. His belief has always been simple: treat your team like family, and treat your clients with respect. That mindset still guides Riverwall today—where people are supported, work is done with care, and relationships are built on trust.
Founder
Frank Mamasioulas joined Riverwall Constructions in 1995 and has since risen to the position Managing Director. A passionate leader and respected industry figure, Frank brings decades of hands-on experience and a steady, people-first approach to the role. He remains deeply involved in day-to-day operations, driving Riverwall’s commitment to quality, transparency, and long-term client relationships.
Managing Director
A Certified Practicing Accountant, George is responsible for ensuring financial control across projects, managing cash flow, overseeing compliance, and providing strategic insight to support sustainable business growth. He works closely with management to guide budgeting, assess risk, and drive informed decision-making across all areas of the business.
Chief Financial Officer
A Senior Associate CIP, Louise holds diplomas in Business Development and General Insurance and is an active member of NIBA, SCA (NSW), UAC, and ANZIIF. Louise is responsible for identifying new business opportunities, strengthening industry relationships, and driving revenue growth. She works closely with clients, insurers, and senior leadership to align services with market needs and support the company’s long-term growth strategy.
Business Development Manager
Chris Jones is a respected leader, having worked in the construction industry for 25 years. Chris has successfully overseen large-scale building projects across both public and private sectors, including works for local councils, government departments and educational facilities. Chris is highly regarded for his commitment to implementing best practices in Construction Safety.
General Manager
