In 1942, Rose Hills completed the installation of its crematorium, and in 1956 Rose Hills Mortuary and Flower Shop were opened, making Rose Hills one of the first cemeteries in the country to offer all the necessary services and facilities for memorialization.
Whittier Heights Mausoleum, built in 1917 as "Mausoleum #1" or "The Little Mausoleum", was the second public mausoleum in California (the first being at Anaheim Cemetery in Anaheim) and portrays a sense of early California architecture with its Spanish Renaissance influence.
Over a period of years, four garden mausoleums (Terrace of Memories, Court of Eternal Light, Mausoleum of the Valley, and Lakeview Mausoleum) were constructed.
El Portal de la Paz (Doorway of Peace) was dedicated in 1930 as part of the initial expansion program at the cemetery. Complete with an enclosed outdoor garden and fountain, Rose Hills' second mausoleum reflects California's early Spanish Mission era. The hallways are named for the California Missions.
The Buddhist Columbarium: Built in 1999, located on 2.5 acres (10,000 m2) at the highest elevation of Rose Hills, is the largest Buddhist pagoda in the United States. The three-story structure, containing 21,000 niches for the interment of cremated remains, is supported by crimson pillars and golden glazed tiles replicating the architecture of ancient Chinese palaces. The pagoda is associated with Fo Guang Shan's Hsi Lai Temple in Hacienda Heights, CA.
Rainbow Chapel, built in 1942 as "Rose Chapel", is an example of early California Mission architecture. This chapel features large windows overlooking gardens and has a maximum seating capacity of 90 people.
Hillside Chapel, built in 1956, is a contemporary diamond-shaped structure surrounded by a garden area. The interior was created for an effect of a sunrise through its rose-tinted skylight and 22-foot (6.7 m)-high windows. Hillside Chapel seats up to 182 people. This building is said to have perfect acoustics.
Sky Church, also completed in 1956, was destroyed by the Whittier earthquake of 1987.
Memorial Chapel has three tall, white spires. It was completed in 1964 as a memorial to John D. Gregg, President of Rose Hills from 1950–1959 and son of Rose Hills founder Augustus Gregg. Memorial Chapel seats approximately 192 people.
SkyRose Chapel is on a central hilltop with a view of the San Gabriel Valley, Los Angeles Skylines to the West and Sycamore Valley to the East. Skyrose Chapel seats 300 people. The building consists of three levels, the upper containing a custom Quimby pipe organ, one of the largest in the Los Angeles area. The lower level is an 11,200 sq. ft. mausoleum. The corridors of the mausoleum are named for the woods used in the building's construction.