development plan: a. Building materials storage and sales yard. b. Carpet cleaning plants, contractor's storage yard . c. Loading areas. d. Plumbing shop and supply yard. e. Public utility sub-station or equipment yard. f. Storage or sales lots
Read it in the chapter →How this ordinance defines it
The operative definition is the local one. Codes routinely subdivide a category into tiers — “day care 2, family”, “group home 2” — and attach different permissions to each, so only La Mesa’s own text settles what this covers.