[7][11][12] In partnership with William Field Staunton, Jr. and Walter I. Webber, they designed the Malaga Cove Plaza, a shopping center in the community of Palos Verdes Estates from 1922 to 1924.

[13][14] They designed the fraternity house of Phi Kappa Sigma located at 10938 Strathmore Drive off the campus of UCLA in Westwood, Los Angeles in 1929.

[3][17] In 1933, Spaulding designed 'Chartwell', built in the style of a French chateau for engineer Lynn Atkinson, who commissioned the property but never lived there.

[19][20] They designed the Behrendt House in North Hollywood, Los Angeles, which won an Honor Award from the Southern California Chapter of the American Institute of Architects in January 1947.

[2] Sumner Spaulding died at age 59 on 10 May 1952 in Los Angeles County, and is buried at Fort Rosecrans National Cemetery in San Diego.