Sam Mamasioulas founded Riverwall Constructions in 1987. Through his drive and leadership, the company has grown in strength and reputation, operating and servicing throughout the East Coast of Australia.

With offices in NSW and Queensland, and a workforce of over 50, demand for Riverwall’s services sees the business constantly expanding.

Sam’s strong family ethics carries into the business, where he counts his employees as extended family and treats all clients with humility and respect.


Frank Mamasioulas commenced working at Riverwall Constructions in 1995, working in various positions within the company learning the many aspects from the ground up.

Dealing with all areas of construction, restoration, natural disaster and business development management, his wide breadth of experience and practical knowledge has seen him rise to the position he now holds as the Chief Executive Officer. Frank’s passion for the industry extends to his role as President of the St George Division and Councillor for the NSW Master Builders Association.

With his personable nature and outstanding customer service, he is widely respected and an incredible asset to Riverwall and its continual growth.

Frank has over 25 years experience in the building industry and holds qualifications such as,

  • Associate Diploma – Science in Building
  • Cert 4 in Building & Construction
  • Diploma in Building & Construction
  • Governance of Registration Course
  • IICRC Qualified
  • MBA NSW Executive Board Member

Andy commenced working as an apprentice at Riverwall Constructions in 1997, starting from the ground up as an apprentice, he had worked his way up to General Manager  throughout the business for over 15 years. He decided to branch out on his own and founded a successful Commercial Construction Company. However, with his love for the family business remaining, Andy agreed to integrate his Company with that of Riverwall Constructions. Andy is now the Chief Operations Officer and has made a major impact on the business with his unparalleled organisational skills and no-nonsense attitude.

Andy has over 22 years’ experience in the building industry and holds qualifications such as:

  • Cert 3 in Carpentry and Joinery
  • Cert 4 in Building & Construction
  • Diploma in Building & Construction
  • Business management diploma


Riverwall Constructions Pty Ltd is a family run business and an industry leader working with major insurance companies.

As a privately owned and managed company, Riverwall Constructions prides itself on having strong family value and working with our customers, both domestically and commercially, to provide service, communication, professionalism, knowledge and quality

We specialise in commercial, industrial & residential property works, fit-out & refurbishment works, insurance repairs, remedial building & engineering project works, strata maintenance & development, rehabilitation & disability building service, mould remediation, water extraction and drying.

With offices in Sydney & Brisbane, our company services the majority of Eastern Australia.