Partner, Elliott, Grant and Smith, Architects, Los Angeles, CA, c. 1963; Principal, Charles M. Grant, Architect, Marina del Rey, CA, c. 1970;

Certified architect, 1946, with a San Mateo address given; (See "Six Mateans Pass Architect Exams" The San Mateo Times, 05/18/1946, p. 3; the article's text read: "Six San Mateo county residents were among the 85 who passed the State Board of Architects' recent examination and were granted certificates it was announced today by the board. The examination consisted of a four-day written test and was followed by an oral examination. Successful in San Mateo county were: Charles Merrill Grant, 2726 Gregory, San Mateo; Albert William Kahl, 218 Taylor Street, Millbrae; Furber Libby, 1000 Godetia Drive, Woodside; E. J. Miller, 235 Third Avenue, San Mateo; William J. Simrell, 711 Costa Rica Avenue, San Mateo and Frederick M. Whittlesey, 410, Occidental Avenue, San Mateo.") Grant joined the American Institute of Architects (AIA) in 1956.