| Buildings built during this decade |
|
| Skyscrapers |
Drummond Court Appartements »»» | 1920 | | 400 Atlantic »»» | 1920 |
| Court Mont-Royal »»» | 1921 |
| Annexe Archambault »»» | 1921 |
| Caron Building »»» | 1923 |
| Wilder Building »»» | 1923 |
| Mayor Building »»» | 1927 |
| Berkeley Hotel »»» | 1928 |
| Royal Bank building »»» | 1928 |
| Themis Building »»» | 1928 |
| Confederation Building »»» | 1928 |
| Tramway Building »»» | 1928 |
| Bell Building »»» | 1929 |
| University Tower »»» | 1929 |
| Métropole building »»» | 1929 |
| Balfour Building »»» | 1929 |
|
| Schools and Universities |
Maisonneuve School »»» | 1920 | | Saint-Jean de la Croix School »»» | 1920 |
| McGill administrative services »»» | 1921 |
| Habitation Hélène Boullé »»» | 1921 |
| James [F. Cyril] Administration Building - McGill »»» | 1922 |
| Jeanne-Mance School »»» | 1922 |
| Saint-Nom-de-Jésus School »»» | 1922 |
| Nesbitt School »»» | 1922 |
| Hochelaga School »»» | 1922 |
| Baron Byng High School »»» | 1923 |
| Fine Arts School »»» | 1923 |
| Guy-Drummond School »»» | 1923 |
| St. Arsène School »»» | 1923 |
| Paul-Bruchési School »»» | 1923 |
| Carlyle School »»» | 1923 |
| Verdun Elementary »»» | 1923 |
| Saint-Pierre-Claver School »»» | 1924 |
| St. Gérard School »»» | 1924 |
| Jean-Baptiste Meilleur School »»» | 1924 |
| École primaire alternative Étoile Filante »»» | 1924 |
| Alice Graham House »»» | 1925 |
| Marianopolis College »»» | 1925 |
| St. Ambroise school »»» | 1925 |
| Sainte-Julienne-Falconieri School »»» | 1925 |
| Anthelme-Verrreau School »»» | 1925 |
| Brébeuf elementary School »»» | 1925 |
| Hampstead Elementary School »»» | 1925 |
| Sainte-Cécile School »»» | 1926 |
| Madelaine de Verchère School »»» | 1927 |
| Pulp and Paper Research Institute »»» | 1927 |
| Centre Marie Mediatrice »»» | 1927 |
| College Jean-de-Brébeuf »»» | 1928 |
| The Sacred Heart School of Montreal »»» | 1928 |
| Très-Saint-Sacrement School »»» | 1928 |
| Hélène-Boullé School »»» | 1928 |
| School Sainte-Cunégonde Girls »»» | 1928 |
| Riverview Elementary School »»» | 1928 |
| Weredale House - Boys Home »»» | 1929 |
| Collège Saint-Ignace »»» | 1929 |
| Willingdon School »»» | 1929 |
| Chomedey de Maisonneuve School »»» | 1929 |
|
| Churches |
Ancienne Synagogue B'Nai Jacob »»» | 1920 | | Notre-Dame du Perpetuel Secour Church »»» | 1920 |
| Saints-Anges Gardiens de Lachine Church »»» | 1920 |
| Saint Columba's Church »»» | 1920 |
| Central Korean United Church »»» | 1920 |
| Temple Batist Church »»» | 1922 |
| Shaar Hashomayim Synagogue »»» | 1922 |
| Montreal Korean United Church »»» | 1922 |
| Église des Montréalais »»» | 1922 |
| Saint-Eusèbe-de-Verceil Church »»» | 1922 |
| THE ROUMANIAN ORTHODOX PARISH OF ST JOHN BAPTISTE »»» | 1922 |
| Saint-Henri Church »»» | 1923 |
| Trinity Memorial Church »»» | 1923 |
| Church of the redeemer »»» | 1923 |
| Seventh-day Adventist Church »»» | 1923 |
| St Cyprina Church »»» | 1924 |
| Westmount Baptist Church »»» | 1924 |
| Royal Bank »»» | 1924 |
| St. Ambroise Church »»» | 1925 |
| Maisonneuve-Saint Cuthbert's Presbyterian church »»» | 1925 |
| Ste. Marguerite-Marie church »»» | 1925 |
| Ste-Madelaine Church »»» | 1925 |
| St. Cuthbert’s Anglican Church »»» | 1925 |
| Saint-François-Solano Church »»» | 1925 |
| Notre-Dame des Victoires Church »»» | 1925 |
| Sainte-Claire Church »»» | 1925 |
| Holy Cross Church »»» | 1925 |
| Sainte-Gertrude Church »»» | 1925 |
| Ste. Cécile Church »»» | 1926 |
| Wesley United Church »»» | 1926 |
| Chapelle évangélique Emmanuel »»» | 1926 |
| Saint Aidan Church »»» | 1926 |
| Saint-Jean de la Croix Church »»» | 1927 |
| Temple Krishna »»» | 1927 |
| Saint-Zotique Church »»» | 1927 |
| Montainside United Church »»» | 1927 |
| Sainte-Thérèse de l enfant Jésus Church »»» | 1927 |
| Eglise de dieu de Bethel »»» | 1927 |
| St Francis of Assisi Parish church »»» | 1927 |
| Saint-Willibrord Church »»» | 1927 |
| Saint-Victor Church »»» | 1927 |
| Saint-Vincent-de-Paul Church »»» | 1928 |
| Ascension of Our Lord »»» | 1928 |
