A Little Bit About Us

During an age when basements were used for coal, storage and the occasional party, GJ MacRae was one of the first contractors to see the benefits of a dry, fully usable basement. We are also considered one of the first companies in the region to have used the term “Foundation Repair” back in the late 1970’s.

1970 – 1975

A Seed Is Planted

GJ MacRae began specialization in below-grade concrete waterproofing, originally conceptualized from flat-roof industrial applications. Our techniques and know-how come from understanding structure.

1975 – 1985


John and Noreen MacRae welcome three children into the world, and although times we’re tough in the early years they always found a way to make ends meet. GJ MacRae slowly begins to gain traction.

1985 – 1995

The Next Generation

The kids become involved on weekends, helping Dad clean up job-sites (while studying the trade and nibbling on timbits). Gavin shows a keen interest in masonry, and the seeds begin to grow.

1995 – 2000

A New Century

GJ MacRae becomes a complete full service foundation repair company, specializing in basement waterproofing, structural repairs and underpinning. The kids work on crews during the summer, and their collective interest expands.

2000 – 2005

The Transition

More advanced, specialized projects become attractive as our expertise and experience grows. Platon drainage board replaces tintest, weeping tile detail changes within the OBC, John transitions to sales and Gavin starts his first crew.

2005 – 2018

Four Decades Later

40 years pass since the seeds were planted, and the mighty oak continues to grow. GJ MacRae leads the industry in all phases of below-grade waterproofing, structural foundation repair, underpinning and heritage foundation restoration.

So, Why
Choose Us?

Many years of consistent projects, repairs and service has allowed GJ MacRae Foundation Repair to stand the test of time. With over 10,000+ completed projects, no one in the GTA is more qualified for your foundation project.
    We are the first and only basement waterproofing and structural foundation repair company that covers all waterproofing, underpinning, structure and drainage related solutions.
  • 2 Meticulous Hand Excavation
    Residential hand excavation is our specialty! With the capability of taking on very tight access-projects (coupled with a low-footprint) we return your grounds back to their original state.
  • 3 Family Owned and Operated
    The only active family-owned and operated basement waterproofing and underpinning company in the GTA. Our history and presence in the industry is widely recognized.
  • 4 We Are The Information People
    After all, we are the information people! Feel free to give us a call for expert advice on all weeping tile, sump box, waterproofing, structural and underpinning related inquiries.
  • 5 Knowledge, Passion, Longevity
    We are not general contractors, nor are we a media company, (nor are we plumbers!) Foundation repair is all we do. Let our experience and expertise protect you and your home for many years to come.
    We have surpassed and completed an upward of 10,000+ projects throughout our four-decades working in the GTA. No other waterproofing or residential structural repair company has been here longer, guaranteed.


full service basement waterproofing and structural foundation repair specialists in the gta.

(905) 824-2557