The Lloyd-Bertles House is architecturally significant as an example of a home designed in the Tudor Revival style with Craftsman style influences. It was built by contractor Henry Lydell in 1919 for Spokane businessman and oil investor Walden D. Lloyd and his wife Hattie. The sunken gardens and basalt landscaping features were most fully developed by John and Henrita Bertles, the owners of Bertles & Bertles Wholesale Lumber Company and 20-year residents of the home. In addition to the home’s individual significance, it is also a contributing element in the Rockwood Avenue National Historic District, an early Spokane neighborhood featuring landscape elements designed by the noted Olmsted Brothers firm of landscape architects of Massachusetts.