Meredith's house neighboured Belmont Hall, the Molson family home that once stood on the site today occupied by the gas station seen on the other side of Clark Street.

Based on the plans of the architect Sir Andrew Thomas Taylor, they enlarged the house and built a hospital known as St. Margaret's Home for Incurables that was able to accommodate 50 patients.

In January 2011, the OSMO Foundation leased Notman House, making it available to internet entrepreneurs, early stage venture capitalists and the general public.

The architect, John Wells, stipulated that the neo-classical structure was to be constructed almost entirely with local materials, from the stone to the mortar which was made with sand from the Saint Lawrence River.

Founded by members of the web community in Montreal, including investors, technology and media executives, the OSMO Foundation has spearheaded the Notman House initiative by financing the project through grants, sponsorships, and loans from government and private sponsors.

[6] In 2015, they started a brand new project titled Develop Cuba, to improve the tech startup industry in the technologically isolated country.

[9] Apart from having a number of paid co-working spaces, Notman House also has a cafe area, which can be used free of charge by those working on web and mobile projects.