Though the church structure was erected in 1927, it took eight years to complete the murals, stations of the cross, and other internal decorations.
The church commissioned the Italian painter, Carlo Wostry, for the murals and stations of the cross.
Wostry had previously painted murals in Trieste, Venice, Paris, and New York, but regarded his works at St. Andrew's to be the "crowning work" of his artistic life.
 He dedicated five years of his life to the interior decoration of St. Andrew's, spending time working both at the church and at a secluded studio in the Hollywood Hills.
 Initially commissioned for the murals above the altar, the parishioners were so enchanted with Wostry's work that they raised funds to have him paint the chapel in the north nave, on which Wostry spent a year on his portrayal of the Madonna seated on a throne with winged angels above her.
 In 1932, Wostry received a further commission to paint the stations of the cross, and returned to Trieste to complete the commission.
On seeing Wostry's murals in Pasadena, the Los Angeles Times in 1930 declared him "a worthy descendant of the great Italian mural painters of the Renaissance."
 Twenty-four of Wostry's murals were exhibited in Triested before being shipped to Pasadena.
An article in an Italian newspaper expressed disappointment that the works were leaving Italy for installation in a place "where the people have money but no genuine art appeciation."
 When the totality of his work was completed in 1935, the Los Angeles Times wrote that Wostry's murals at St. Andrew's were "a revelation to the western art world" and the best "in any church in the two Americas."
Though the church structure was erected in 1927, it took eight years to complete the murals, stations of the cross, and other internal decorations. The church commissioned the Italian painter, Carlo Wostry, for the murals and stations of the cross. Wostry had previously painted murals in Trieste, Venice, Paris, and New York, but regarded his works at St. Andrew's to be the "crowning work" of his artistic life.  He dedicated five years of his life to the interior decoration of St. Andrew's, spending time working both at the church and at a secluded studio in the Hollywood Hills.  Initially commissioned for the murals above the altar, the parishioners were so enchanted with Wostry's work that they raised funds to have him paint the chapel in the north nave, on which Wostry spent a year on his portrayal of the Madonna seated on a throne with winged angels above her.  In 1932, Wostry received a further commission to paint the stations of the cross, and returned to Trieste to complete the commission. On seeing Wostry's murals in Pasadena, the Los Angeles Times in 1930 declared him "a worthy descendant of the great Italian mural painters of the Renaissance."  Twenty-four of Wostry's murals were exhibited in Triested before being shipped to Pasadena. An article in an Italian newspaper expressed disappointment that the works were leaving Italy for installation in a place "where the people have money but no genuine art appeciation."  When the totality of his work was completed in 1935, the Los Angeles Times wrote that Wostry's murals at St. Andrew's were "a revelation to the western art world" and the best "in any church in the two Americas."
St. Andrew's Catholic Church (Pasadena, California)