Oldershaw, A. Bruce, Builder
- 715 Catherine St, 1898

Oliphant, William, Builder
- 1023 Oliphant Av, 1912

Osithe, Sister Mary

Owen, Frank I.M., Architect
- 228 Douglas St, 1944 alterations.

Ozard, Harry, Builder
- 3040 Carroll St, 1913, attributed

Paine & Townsend, Contractors
- 1310 Franklin Tc, 1944

Palmatier, Horace N., Architect/Builder
- 427 Arnold St, 1911

Pannell, Charles & Sons, Builder
- 1437 Vining St, 1891

Parfitt Brothers, Contractors/Designers
- 713 Bay St, Bay St Armory, 1914-15
- 1815 Belmont Av, Camp Hill, 1909
- 2827 Belmont Av, Oaklands School, 1912-14
- 930 Burdett Av, The Deanery, 1938
- 2420 Douglas St, Canadian Bank of Commerce, 1910
- 1921-1923 Fernwood Rd, 1909; 1914
- 2006-2010 Fernwood Rd., 1913
- 2645 Fernwood Rd, 1912-13
- 2663 Fernwood Rd, 1912-13
- 1900 Fort St, Royal Jubilee Hospital, Pemberton Memorial Chapel, 1909
- 1280-1298 Gladstone / 2000-04 Fernwood, Weston’s Bakeries, 1911-12
- 1301-1311 Gladstone Av., 1910-11
- 1421 Grant St, 1913
- 1118 Princess St, George Jay School, 1909
- 1611 Quadra St, St. John the Divine Anglican Church, 1912
- 2549 Quadra St, Quadra Primary School, 1921
-911 Quadra St, Christ Church Cathedaral,
1926-29

Parfitt, Fred, Framer
- 1702 Fernwood, 1907, attributed

Parker, Jameson & Phillips, Ralph, Architects/Contractors
- 310 Henry St, The Church of the Holy Saviour, 1891
- 1337 Rockland Av, 1928

Pattern book, Designs
- 617 Battery, Pinehurst, 1889
- 1702 Fernwood Rd. 1907-08, attributed
- 154 South Turner, 1986, attributed

Patton, William Francis, Builder
- 151 Oswego St, 1884-85

Pike, Albert, Builder
- 123 Cambridge St, 1912
- 554 Niagara St, 1900

Porter, James, Builder
- 628 Battery St, 1912

Powers, George L., Builder
- 1431 Vining St, 1891
- 1433 Vining St, 1891

Prescott, Charles Austen, Contractor
- 35 San Jose Ave, 1891

Pusey, Leonard & James, Builders
- 2011 Cameron St., 1892