Complaint: Improper plural noun (“dollis”); Engraving said error and mounting to doorway with 3M Adhesive Mounting Squares.
Defendant: A building at 20 West 22nd.
Report: Officer noticed transgression weeks ago, yet was uncomfortable approaching doorway to take undercover photograph because some guy was always standing next to it. Officer forced wife and friend to walk out of their way in the cold evening in order to successfully capture transgression.
You neglected to mention that the sign-maker also forgot a comma between “handtrucks”and “dollis” [sic]. But I would give them credit for not abusing apostrophes, for which this sign is ripe.