Boston architect who studied at the Massachusetts Institute of Technology (MIT) from 1872 to 1873, when the American architect William Robert Ware (1832–1915) was head of the newly created Architectural School. Rotch was a trainee at his teacher’s architectural firm Ware & Van Brunt and continued working for his former teacher as a draftsman after completion of his studies in 1874 (Chewning, 1979, p. 26). From 1874 to 1880, Rotch continued his formation at the École des Beaux-Arts in Paris and in the atelier of the French architect Joseph Auguste Émile Vaudremer (06.02.1829–07.02.1914). Back in Boston, he founded the architectural firm Rotch & Tilden in 1880 together with the architect George Thomas Tilden (19.03.1845–10.07.1919). Rotch & Tilden existed until 1895 and was one of the most active architectural firms in New England.
Arthur Rotch collected stucco and glass windows, four of which were donated after his death to the Department of Architecture at MIT by his sister Annie Lawrence Rotch (Lamb) (1850–1926) as part of the Rotch Art Collection.

Chewning, J. A. (1979). William Robert Ware at MIT and Columbia. Journal of Architectural Education, 33(2), 25–29.