Yes it is allowed, with approval from the City for a Home Occupation Permit.
Home occupations are permitted in the R-1, R-2, and R-3 Zones subject to obtaining a Home Occupation permit from the Planning Division.
Permitted Home Occupations. The following businesses are permitted with a valid Home Occupation permit:
(a) Office use;
(b) Mail ordering;
(c) Home crafts such as model making, basket weaving.
Home Occupations Prohibited. Permitted home occupations may not in any event be deemed to include the following:
(a) Auto repair;
(b) Barber shop or beauty salon;
(c) Carpentry work;
(d) Dance instructions;
(e) Funeral chapel or funeral home;
(f) Gift shop;
(g) Medical or dental offices, labs, clinics, or hospitals;
(h) Auto, boat and trailer painting;
(i) Photo studio;
(j) Private schools;
(k) Renting of equipment and/or trailers;
(l) Appliance repairs;
(m) Eating establishment;
(o) Tailors, dressmakers, upholstery;
(p) Service uses, personal and professional;
(q) Such other uses that may generate excessive pedestrian or vehicle traffic and that may be obnoxious or a nuisance to adjacent residents such as noise, odor, or appearance as determined by the City Planner, or that violate the use limitations provided in subsection (5) of this section.