In addition to the heritage conservation districts, other clusters of heritage buildings are also situated at the Markham Museum and Markham Heritage Estates. The former is an open-air local history museum; while the latter serves as the city's "subdivision last resort", an area reserved for relocated heritage buildings that cannot be retained on their existing site. The museum and subdivision are both situated near the Markham Village heritage conservation district, although they do not form a part of said district.
