§ 150.721 EXEMPTED SIGNS.
   The following signs are exempt from the requirement of a permit.
   (A)   Warning and security signs placed by a public utility for the safety, welfare, or convenience of the public, including, but not limited to signs identifying high voltage, public telephone, or underground cables.
   (B)   Any sign erected by or under the authority of the city on property owned by the city.
   (C)   "No Dumping" and "No Trespassing" signs, less than one square foot in area per sign and not spaced less than 100 linear feet apart.
   (D)   Signs attached to a temporary structure utilized specifically for outdoor sales or services or any other signs which are approved in a specific use permit authorizing the outdoor sales or services.
   (E)   Non-illuminated names of buildings, dates of erection, monument statues, commemorative tablets and the like when carved into stone, concrete, metal, or any other permanent type of construction and made an integral part of an allowed structure, made flush to the ground, or permanently attached to and incorporated into the overall design of all or part of one or more facades of a building in a GUI zoning district.
   (F)   Any traffic sign, public notice or warning required by a valid and applicable federal, state, or local law, regulation, or ordinance on public or private property.
   (G)   Traffic control signs on private property, such as stop, yield, and similar signs, and which contain no commercial message.
   (H)   Address signs not located in single family residential zones and not greater than five square feet in area. One is permitted per access drive.
   (I)   Residential nameplate sign not exceeding one, two square foot sign per single family unit.
   (J)   Retail store window displays of merchandise, freestanding three-dimensional promotional items (with or without proprietary words or symbols solely describing the merchandise and/or merchandise that is sold in the store), and/or display fixtures not affixed to windowpanes and located inside the store.
   (K)   Holiday lights and decorations with no commercial message.
   (L)   Restricted parking signs required or authorized by city ordinance or by law, including but not limited to handicap parking signs.
   (M)   (1)   No sign permit is required for a change of copy on any sign, or for the repainting, cleaning and other normal maintenance or repair of a sign or sign structure for which a permit has previously been issued, so long as the sign or sign structure is not modified.
      (2)   Exception: If the sign was approved by a variance from the City Council, the replacement of a sign face will require a new permit which may again require Council approval.
   (N)   A political sign exempt pursuant to the provisions of Tex. Loc. Gov't Code § 216.903.