Quality Craftsmanship, Outstanding Customer Service. Since 1968

Jim & Cathy MulhollandFounded in Collingwood, Ontario in 1968 by the late Jim Mulholland, Mulholland Construction Company is one of the most recognized and trusted building contractors throughout the Georgian Bay region. Many of Jim’s construction projects stand tall as a constant reminder of his talents as a builder, including converting what was Collingwood’s first elementary school, dating back to 1879, into School House Lane, a retail, dining, entertainment mall that links Pine Street to Hurontario Street.

Jim was honoured by the town he loved so much in 1976, being named Citizen of the Year.

Jim’s son Ian, took over the company from his father in 1982. Since then, Ian and his team have continued the tradition of building quality homes and custom renovations, with an emphasis on quality, attention to detail and outstanding customer service.
Ian and his talented, professional team bring to the Port Severn area, the same quality craftsmanship and outstanding customer care that has been meeting the construction and renovation needs for thousands of clients for over 50 years.

Continuing the family tradition, Ian’s son Tanner joined the company full-time in 2017. Tanner has learned the trade by working with his father for many years. Recently, he graduated from Humber College, succesfully completeing a 4 year course in Architectural Technology and is well equipped to help plan your next project. The company continues to build on its three generations of experience and strong relationships with area designers, expert trades people and municipalities.




Ian Mulholland believes that customer service is critical to his ongoing success.

“…it boils down to trust. I’m not just completing a project, I’m building a meaningful business relationship with my client. A relationship held together by honesty, integrity, professionalism, communication and delivering the project on time and on budget.”