(a) If a zoning regulation adopted under this subchapter requires a greater width or size of a yard, court, or other open space, requires a lower building height or fewer number of stories for a building, requires a greater percentage of a lot to be left unoccupied, or otherwise imposes higher standards than those required under another statute or local order or regulation, the regulation adopted under this subchapter controls. If the other statute or local order or regulation imposes higher standards, that statute, order, or regulation controls.
(b) This subchapter does not authorize the commissioners court to require the removal or destruction of property that exists at the time the court implements this subchapter or to restrict the right of a landowner, acting in the owner’s behalf, to construct improvements for agricultural purposes or to otherwise use the land for agricultural purposes except the commissioners court may take those actions to restrict or prohibit any commercial agricultural enterprise such as a feed lot.

(c) This subchapter, an order adopted under this subchapter, or a zoning regulation does not apply to the location, construction, maintenance, or use of central office buildings or equipment used by a person engaged in providing telephone service to the public.