He served as a design architect for the Los Angeles County Architectural Divisions and designed numerous public buildings and private residences in Southern California in the Los Angeles area, Malibu, Santa Barbara, Palm Springs, Orange County, and in Northern California in the Napa Valley.
On June 29, 1926, Flanner married architect and artist Frederick Monhoff and lived in Altadena with their child, John, born in 1941.
Frederick the Great | Frederick | Frederick II | Frederick II, Holy Roman Emperor | Frederick Russell Burnham | Frederick Roberts, 1st Earl Roberts | Frederick Law Olmsted | Frederick I, Holy Roman Emperor | Frederick Forsyth | Frederick Douglass | Frederick, Maryland | Prince Frederick, Duke of York and Albany | Frederick III | Frederick I | Frederick Delius | Frederick William III of Prussia | John Frederick II, Duke of Saxony | Frederick III, German Emperor | Frederick William IV of Prussia | Frederick Schomberg, 1st Duke of Schomberg | Frederick I, Margrave of Brandenburg-Ansbach | Frederick III, Holy Roman Emperor | Frederick, Prince of Wales | Frederick Funston | Frederick Ashton | John Frederick II | Frederick Wiseman | Frederick Marryat | Lord Frederick Cavendish | Frederick Pollock |