TLDR: the real estate developer that founded Claremont (Mason-McDuffie Co spearheaded by Duncan McDuffie) imposed conditions in its titles that explicitly bared non-whites and prohibited commercial enterprises. However, those title conditions couldn't control neighboring areas, so McDuffie pushed to get zoning laws passed that were explicitly inspired by anti-chinese laundry regulations in LA. The Berkley regulation was "expedited" to prevent a "negro dance hall" from opening.
To me, the existence of the anti-commercial provisions in the McDuffie title restrictions in addition to explicit racial exclusions indicates that racial exclusion was not the only motivating factor in adopting single family zoning laws. However, the context and immediate usage does make it pretty clear that racial exclusion was a significant part of the motivation.
TLDR: the real estate developer that founded Claremont (Mason-McDuffie Co spearheaded by Duncan McDuffie) imposed conditions in its titles that explicitly bared non-whites and prohibited commercial enterprises. However, those title conditions couldn't control neighboring areas, so McDuffie pushed to get zoning laws passed that were explicitly inspired by anti-chinese laundry regulations in LA. The Berkley regulation was "expedited" to prevent a "negro dance hall" from opening.
To me, the existence of the anti-commercial provisions in the McDuffie title restrictions in addition to explicit racial exclusions indicates that racial exclusion was not the only motivating factor in adopting single family zoning laws. However, the context and immediate usage does make it pretty clear that racial exclusion was a significant part of the motivation.