Austin & Shambleau was an American architectural partnership in South Bend, Indiana, in the United States. It was founded by Ennis R. Austin and N. Roy Shambleau and operated from 1909 to 1942. It has been described as "the most distinguished architectural firm in Northern Indiana" of the early twentieth century.

Partner biographies Ennis Raymond Austin was born August 30, 1863, in Owasco, New York, to John R. Austin. He attended public schools before entering Cornell University, graduating in 1886. For a year after his graduation he worked for Napoleon LeBrun & Sons, and then moved to the Tiffany Glass and Decorating Company, working under the supervision of John du Fais for four years. In 1892 he and a Tiffany colleague, Wilson B. Parker, moved west to South Bend to establish an architectural firm, Parker & Austin. In 1896 Austin became a member of the American Institute of Architects."Ennis R. Austin," South Bend and the Men Who Have Made It, ed. Anderson & Cooley (South Bend, IN: Tribune Printing Company, 1901): 285. Austin's partnership was dissolved in 1900 when he received an appointment as a construction superintendent in the Office of the Supervising Architect for the United States Treasury. In 1906 he returned to South Bend and formed the firm of Schneider & Austin with Walter W. Schneider. This partnership was dissolved in 1909, when he formed Austin & Shambleau with N. Roy Shambleau."Ennis R. Austin," An Account of St. Joseph County From its Organization, ed. John B. Stoll (Dayton, OH: Dayton Historical Publishing Company, 1923): 197. This continued until its dissolution in 1942."Personal," Architectural Record 92, no. 2 (February 1942): 14. He maintained a small private practice until his retirement in 1949. He died January 15, 1951.

Norman Roy Shambleau was born in 1888 in London, Ontario, to the carriage-maker P. E. Shambleau. At the age of eleven the family moved to Detroit, and at the age of seventeen Shambleau came to South Bend, entering the office of Wilson B. Parker. He worked for Parker and other South Bend architects until 1909, when he formed the partnership with Austin."N. R. Shambleau," An Account of St. Joseph County From its Organization, ed. John B. Stoll (Dayton, OH: Dayton Historical Publishing Company, 1923): 411. After the firm was dissolved in 1942, Shambleau succeeded to the practice. He practiced independently at least through the late 1950s. He died in 1975.

Legacy A number of the firm's works are listed on the United States National Register of Historic Places, and others contribute to listed historic districts.

Architectural works + Year Building Address City State Notes Image Reference 1909 House for George L. Hager 415 W Wayne St South Bend Indiana Listed on the National Register of Historic Places in 1985. Hager House NRHP Registration Form (1985) 1910 House for John M. Studebaker 904 E Jefferson Blvd South Bend Indiana Listed on the National Register of Historic Places in 1999 as part of the Howard Park Historic District. Howard Park Historic District NRHP Registration Form (1999) 1910 Indiana and Michigan Electric Company Power Station 401 E Colfax Ave South Bend Indiana Listed on the National Register of Historic Places in 1999. Municipal Journal and Engineer 28, no. 18 (May 4 1910): 682.I and M Electric Co. Building-Transformer House and Garage NRHP Registration Form (1999) 1912 House for Dr. Merritt J. Keightley 1021 E Wayne St South Bend Indiana Listed on the National Register of Historic Places in 1999 as part of the Howard Park Historic District. 1916 House for Joseph de Lorenzi 812 E Jefferson Blvd South Bend Indiana Listed on the National Register of Historic Places in 1999 as part of the Howard Park Historic District. 1917 Mishawaka Trust and Savings Company Building N Main St and Lincolnway W Mishawaka Indiana Demolished. American Contractor 38, no. 14 (April 7 1917): 84. 1919 Newman Building 127 E Main St Niles Michigan Listed on the National Register of Historic Places in 2007 as part of the Niles Downtown Historic District. American Contractor 40, no. 16 (April 19 1919): 86.Niles Downtown Historic District NRHP Registration Form (2007) 1919 South Bend Tribune Building 225 W Colfax Ave South Bend Indiana American Contractor 40, no. 33 (August 16 1919): 62.American Contractor 40, no. 39 (December 6 1919): 63. 1919 "Twyckenham Park" for Albert Russel Erskine 1204 Honan Dr South Bend Indiana Also known as Erskine Manor. American Contractor 40, no. 27 (July 5 1919): 80. 1921 House for William C. Sibley 231 S Eddy St South Bend Indiana Listed on the National Register of Historic Places in 1999 as part of the Howard Park Historic District. 1922 House for Charles A. Lippincott 103 S Eddy St South Bend Indiana Listed on the National Register of Historic Places in 1999 as part of the East Washington Street Historic District. East Washington Street Historic District NRHP Registration Form (1999) 1922 Knights of Pythias Lodge 224 W Jefferson Blvd South Bend Indiana Designed in association with Austin's former partner, Walter W. Schneider. Listed on the National Register of Historic Places in 1985. Knights of Pythias Lodge NRHP Registration Form (1985) 1923 James Whitcomb Riley High School (former) Fellows and Ewing Sts South Bend Indiana Demolished. Iron Age (October 11 1923): 1021. 1927 Jefferson School 528 S Eddy St South Bend Indiana Iron Age (December 18 1927): 1711. 1928 Madison School 832 N Lafayette Blvd South Bend Indiana Iron Age (April 26 1928): 1206. 1929 House for Frederick G. Eberhart 536 Miami Club Ct Mishawaka Indiana 1929 Indiana and Michigan Electric Company Building 220 W Colfax Ave South Bend Indiana Listed on the National Register of Historic Places in 1985. I & M Building NRHP Registration Form (1985) 1929 Tower Building 216 W Washington St South Bend Indiana Listed on the National Register of Historic Places in 1985. Tower Building NRHP Registration Form (1985) 1930 House for James A. Judie 1515 E Jefferson Blvd South Bend Indiana Listed on the National Register of Historic Places in 1983. James A. Judie House NRHP Registration Form (1983) 1932 United States Post Office and Courthouse 204 S Main St South Bend Indiana Listed on the National Register of Historic Places in 2015. Federal Building NRHP Registration Form (2015) 1936 Marquette School 1905 College St South Bend Indiana Listed on the National Register of Historic Places in 2013. Marquette School NRHP Registration Form (2013)

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