History of Mattamy Homes in Timeline

By Popular Timelines Editorial Team · Updated: April 10, 2026

Mattamy Homes, established in 1978 by Peter Gilgan in Toronto, is a prominent North American home builder. Notably, it stands as the largest residential home builder in Canada. It also ranks among the top 25 builders in the United States. It remains a privately owned entity.

1978: Mattamy Homes Starts Constructing Homes

In 1978, Mattamy Homes began constructing homes, with their first project located in Burlington, Ontario. Shortly after, Mattamy Homes made its first multi-lot purchase of 20 lots in Burlington, Ontario. This kickstarted their growth as a home developer.

1978: Mattamy Homes Founded

In 1978, Mattamy Homes was founded in Toronto by Peter Gilgan. The company grew to become one of the largest privately owned home builders in North America.

1985: Glen Abbey community introduced

In 1985, Mattamy Homes introduced their Glen Abbey community, which was the first multi-phased community built by Mattamy.

2003: Mattamy Expands to the United States

In 2003, Mattamy Homes expanded its operations to the United States as part of its continued expansion efforts.

2004: Mattamy Introduces Factory-Built Homes

In 2004, Mattamy Homes introduced factory-built homes as part of their construction offerings.

2010: Creation of Rotary/Mattamy Greenway began

In 2010, the creation of the Rotary/Mattamy Greenway began. In 2015, Gilgan donated $5-million to Parks Foundation Calgary to be used for the development of a 138-kilometre ring of paved pathways around the city. The greenway was completed in 2017.

2011: Peter Gilgan Donates to Ryerson University

In 2011, Peter Gilgan donated $15 million to Ryerson University, which was used to create the Mattamy Athletic Centre on the upper level of Maple Leaf Gardens.

2013: Gilgan Donates to The Hospital for Sick Children

In 2013, Peter Gilgan donated $40 million to support the development of The Hospital for Sick Children Centre for Research and Learning.

2015: Mattamy Enters High-Rise Market

In 2015, Mattamy Homes completed an acquisition of a high-rise development firm, marking its entry into the high-rise market.

2015: Gilgan Donates to Parks Foundation Calgary

In 2015, Peter Gilgan donated $5 million to Parks Foundation Calgary for the development of a 138-kilometre ring of paved pathways around the city, known as the Rotary/Mattamy Greenway, which was completed in 2017.

2017: Rotary/Mattamy Greenway Completion

In 2017, the Rotary/Mattamy Greenway was completed. Peter Gilgan initially donated $5 million to Parks Foundation Calgary for its development in 2015, with the project starting in 2010.

2018: Mattamy Homes Donates to Ontario Proud

Prior to the 2018 Ontario general election, Mattamy Homes donated $100,000 to Ontario Proud, a right-wing political advocacy group supporting Doug Ford. The donation was controversial due to Ontario's recent prohibition of corporate political donations, and Mattamy pledged to cease contributions to political advocacy groups in the future. This event had broad media coverage.

March 24, 2019: CoolToday Park Opens

On March 24, 2019, CoolToday Park, a ballpark and spring training complex for the Atlanta Braves, opened in North Port, Florida. Mattamy donated 90 acres of land and $4.7 million towards the development of the park, which opened against the Tampa Bay Rays.

2019: Mattamy Fined for Illegal Tree Cutting

In 2019, Mattamy was fined $25,000 by the city of Guelph for 78 charges of illegal tree cutting on a lot in the south end of the city.

2019: Gilgan Donates to The Hospital for Sick Children in Toronto

In 2019, Peter Gilgan donated $100 million to The Hospital for Sick Children in Toronto, making Gilgan the largest health care benefactor in Canada at the time.

2022: Mattamy Closes GeoExchange Community

In 2022, Mattamy closed their first ever GeoExchange community heated and cooled by Geothermal energy technology. As a result of this, Mattamy was qualified as a Net-Zero Builder under the Canadian Home Builders' Association. This community was the first of its kind in the GTA located in the Phase 1 development, Springwater in Berczy Village, Markham, Ontario.

2022: Gilgan Donates to Trillium Health Partners

In 2022, Peter Gilgan donated $105 million to Trillium Health Partners to build the "Peter Gilgan Mississauga Hospital" and to expand the existing Queensway Health Centre. The donation was the largest donation to a hospital in Canadian history.