There are lots of signs that fall under this category, such as construction signs, real estate signs, subdivision signs, political signs, temporary events signs, and sandwich board signs. Each has specific rules to follow and require permit if they are over four square feet!
Construction Signs: These are the signs you see on building projects for who is doing the work, such as the architects, contractors, etc., but cannot advertise the project itself. There is a maximum size allowed for these signs. Please see Section 28.8.1 of the Zoning Regulations.
Real Estate Signs: There cannot be more than 2 signs, they have to be located on the property that is for sale or lease and shall be removed within 1 after the sale/lease/rental. There is a maximum size allowed for these signs. Please see Section 28.8.2 of the Zoning Regulations.
Subdivision Signs: You have to have more than 6 lots and this give you one additional temporary sign which cannot exceed 20 square feet, and has to come down within one week after the sale of the final lot.
Political Signs: There shall be no more than a total of 20 square feet of signage per property and the signs have to come down within a week after the election fro which they were involved.
Temporary Events: You can have banners, sandwich boards or pennants, but there are certain limitations: