Recognized Federal Heritage Building
CEF, Horticulture Building, No. 74
Ottawa, Ontario
Also known as Botanical Laboratory / Horticulture Building 74, Laboratoire botanique d'horticulture, bâtiment 74

Exterior photo
Photo: (Kate MacFarlane, Architectural History Branch, Heritage Railway Stations Division, 1987.)
- Built
- 1924
- Recognized
- 1988
- By
- Government of Canada
The register’s text, word for word
Description
CEF, Horticulture Building, No. 74 is located at the Central Experimental Farm (CEF) in Ottawa. The two-and-a-half storey research building displays the influence of Revival styles, popular at the farm, in the design of its steeply pitched roof, roughcast stucco and decorative half-timbering. The main entrance doors are recessed within a projecting, two-storey, gabled section on the front façade. The designation is confined to the footprint of the building.
Heritage value
CEF, Horticulture Building, No. 74 is a Recognized Federal Heritage Building because of its historical associations, and its architectural and environmental value.
Historical Value
CEF, Horticulture Building, No. 74 is closely associated with Canada’s experimental farm system and its role in agricultural research and education. The building was built as a botanical laboratory and research center.
Architectural Value
CEF, Horticulture Building, No. 74 is valued for its good aesthetic qualities. It is a subdued but attractive example of Queen Anne architecture, employing the decorative half-timbering and textural contrasts associated with the style. Demonstrating a good functional design as a research facility, it was designed to accommodate space for specimen examination and storage. The decorative treatment of the entryways, the half-timbering and masonry brickwork reveal good materials and craftsmanship.
Environmental Value
CEF, Horticulture Building, No. 74 maintains an unchanged relationship to its site and reinforces the agricultural character of its experimental farm setting. The building is familiar within the immediate area.
Sources:
Kate MacFarlane, Building No.74, Botanical Laboratory, Central Experimental Farm, Ottawa, Ontario, Federal Heritage Buildings Review Office, Building Report, 87-057.
Botanical Laboratory, Botanical Laboratory / Horticulture Building 74, Ottawa, Ontario, Heritage Character Statement, 87-057.
Character‑defining elements
The character-defining elements of CEF, Horticulture Building, No. 74 should be respected.
Its good aesthetic and functional design and good materials and craftsmanship, for example:
-the two-and-a-half storey massing with a steeply-pitched, truncated hip roof punctuated at regular intervals with flat-topped dormers;
-the symmetrical arrangement of the façade with paired rectangular windows flanking a slightly projecting central section topped with its own steeply pitched roof;
-the exterior cladding including the brick and stucco, and the decorative half-timbering;
-the foundation walls of random coursed stone;
-the decorative treatment of the entryway, which is composed of recessed double doors under a segmental arch with radiating brick voussoirs;
-the regular arrangement of windows;
-the various finishes and decorative treatments.
The manner in which CEF, Horticulture Building, No. 74 maintains an unchanged relationship to its site, reinforces the agricultural character of its experimental farm setting and is a neighbourhood landmark, as evidenced by:
-its ongoing relationship to its carefully manicured grounds;
-its overall design, brick and stucco cladding and decorative details, which are consistent with CEF buildings of the late 19th and early 20thcenturies;
-its importance as part of a group of research and science buildings located at the farm, which makes it a familiar building to visitors and employees.
End of the register’s text
Location
74 Central Experimental Farm, Ottawa, Ontario, Canada
45.39067° N, 75.70650° W
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From the Canadian Register of Historic Places, as last updated on December 12, 2025. The register’s text is shown word for word.