Sidney Lithwick quickly became a fast-rising star when he joined the firm A.J.Hazelgrove in 1946, shortly after he graduated from McGill University. One of the preeminent architects in the City of Ottawa, his firm designed the Children's Hospital of Eastern Ontario, the Ottawa Heart Institute at the Ottawa Civic Hospital, many of the schools for the Ottawa Board of Education, the Agudeth Israel and Beth Shalom Synagogues and the original Hillel Lodge. Some of his early workst that ushered in a wave of clean-lined, Contempo designs, included the iconic People's Credit Jewellers Shop that adorned the jazzy Sparks Street.
His wife Ida (nee Witchel, 1925 – 2013) was a top-mark student and talented dancer, and was recruited to Hollywood, CA for showbusiness when she met her beloved Sidney. Both Sidney and Ida were lifetime members of the Kiwanis Club of Ottawa, and the Kiwanean Club respectively, donating much of their time and resources to the Ottawa community.
Sidney Lithwick built 385 IPD in 1953 as his primary residence with his wife Ida. The residence is filled with the highest quality materials, including a front entrance centered brass doorknob, dramatic terrazzo entrance, living room and dining room with ribbed birch accent walls and Italian rough slate floors, Brazillian walnut panelling in den, pine ceiling with ornamental beams, build-in message centre, stainless steel lining for cutlery drawers, three pull-out auxiliary work surfaces (Jewish-style food preparation), quarry tile floor in breakfast room, radiant heating, and heated floors. The home even had a secret tunnel structure behind the family room for the children to play.