The SFMTA has received tips about fraudulent curb paint enterprises that illegally paint address numbers on the curb for a fee. The SFMTA does not paint address numbers on the curb nor is this practice sanctioned by the SFMTA in any way. One such fraudulent group goes under the name of “Community Services”, “Community Address Painting Service” or similar names. They are not a legitimate service. Please refrain from giving money to such groups and call 911 if threatened.
SFMTA regulations can be found here.

