Ellen Kurzman, 45, an architect known for her work in residential remodeling, died of cancer Wednesday at her home in Washington.

A graduate of Wellesley College and the Columbia University School of Architecture, Mrs. Kurzman came to Washington with her husband in 1961. She worked for a number of architectural firms, of which the last was Keyes, Lethbridge & Condon, and in recent years worked out of her Georgetown home.

Her specialty was redoing the interiors of older houses. At her own home, for instance, she roofed over a 20-foot-long passageway with three skylights to make an elongated kitchen opening through two door-ways and a glass-ess window into the adjoining space. Radiators were hidden by stock window shutters.

"Her work was elegant and imaginative," said design critic Sarah Booth Conroy of The Washington Post. "Her remodelings were done with taste and with a knowledge of how house 'work.'"

Mrs. Kurzman's designs had been "published" in House Garden and Sunset magazines as well as in The Post. Mrs. Kurzman also was a professional, portrait artist. She had been ill on and off for several years, but had worked at home until her final weeks.

Survivors include her husband, Stephen Kurzman, and two sons, Charles and George, all of the home, and her parents, Mr. and Mrs. Walter Goldberg, of Short Hills, N.J.