1802 To 1920
| Building | Location | Year Completed | Comment | Image |
|---|---|---|---|---|
| Heintzman House or Sunnyside Manor Farm | 135 Bay Thorn Drive, Thornhill | 1816 | Museum | |
| Hoover House | Markham Museum | 1824 | ||
| Gapper-Duncan House | 6 Wismer PL | 1828 | relocated from Yonge Street | |
| Chapman House | Markham Museum | 1832 | moved from Milliken’s Corners | |
| Prentice House or Delos Crosby House | 33 Rougehaven Way, Markham | c. 1836 | ||
| Eckhardt-McKay House or Salem Eckhardt House | 197 Main Street, Unionville | 1837 | restored, now home to Kathleen Gormley McKay Art Centre | |
| Robert Grundy House | 6 Alexander Hunter Place | c. 1840 | relocated from 9954 Woodbine Ave | |
| Henry R. Wales House | 159 Main St N, Markham | 1845 | restored | |
| John Edey House | 4 Leahill Drive, Thornhill | 1845 | relocated from Yonge ST in 1966 | |
| The Ninth Line Baptist Church | Markham Museum | 1848 | ||
| Maxwell House | Markham Museum | 1850 | moved from Scarborough | |
| John Grice General Store | 7703 and 7707 Yonge Street, Thornhill | 1850 | Now Benjamin Moore Thornhill Paint Supplies and Thornhill Denture Clinic | |
| John Ramer Homestead | 6278 19th Avenue, Dickson Hill | 1850 | Barn built 1869 | |
| Ellen Ramsden House on Thornhill Village Library | 10 Colbourne St, Thornhill | 1851 | ||
| The John Irving Calvert House | 10 Alexander Hunter Pl | 1855 | ||
| James Thomas House | 14 David Gohn Circle | 1856 | restored | |
| The John Galloway House | 4 David Gohn Circle | 1858 | moved in 1995 | |
| Buttonville General Store | 8971 Woodbine Ave, Buttonville | 1860 | restored, currently Amici day spa | |
| Queen's Hotel | 174 Main St, Unionville | 1860 | restored, and lived in | |
| The Cedar Grove Blacksmith Shop | Markham Museum | 1862 | moved from Cedar Grove | |
| Cedar Grove School House | 7667 14th Avenue, Thornhill | 1869 | restored as Cedar Grove Community Centre | |
| Box Grove School House | 7651 9TH Line South, Markham | 1870 | Now home to Box Grove Co-op Daycare | |
| Box Grove Church | 2 Legacy Dr. Markham | 1870 | Box Grove Heritage United Church | |
| Unionville Train Station | 7 Station Lane, Unionville | 1871 | restored | |
| The McKenzie-Gowland House | 12 Alexander Hunter Pl | 1871 | moved from 9785 McCowan Road and restored 1997 | |
| James Speight House / Wedding Cake House | 48 Main St N, Markham | 1870 | ||
| S.S. #5 | Buttonville | 1872 | now the York Regional School Board Heritage Schoolhouse | |
| Lapps Cider Mill | Markham Museum | c.1872 | rebuilt at Markham Museum 1981-1983 | |
| James Darius Harrington House | 9642 9th Line (north of 16th Avenue/Don Cousens Parkway) | 1873 | Abandoned and vacant | |
| German Mills School, S.S. #2 | 80 German Mills Road | 1874 | German Mills Community Centre | |
| Wilson Variety Hall | Markham Museum | 1875 | ||
| Town Hall | Main Street, Markham | 1881 | now home to private business | |
| Markham Village Railway Station | Village of Markham | 1900s | restored 2000 as GO Transit station and community centre | |
| Mount Joy School | Markham Museum | 1907 | moved from Mount Joy | |
| Stiver Mill | Unionville | c. 1916 | state of disrepair | |
| Milliken Public School | Steeles Avenue East and Midland Avenue, Milliken Mills | 1929 | later Scarborough Christian School and only facade on Steeles Avenue remains and incorporated with commercial/residential development | |
| Locust Hill Train Station | Markham Museum | 1936 | moved from Locust Hill |
Read more about this topic: List Of Historic Buildings In Markham, Ontario