(A) Height regulations.
(1) There shall be a height limitation of 35 feet on all structures within the ARD, unless otherwise provided herein.
(2) Where the average slope of a lot is greater than a one-foot rise or fall in seven feet of horizontal distance from the established road elevation at the property line, an allowance of one story may be added to the number of stories permitted in the district in which the lot is situated provided the additional story is situated on the downhill side of the building.
(3) Except in the Wild and Scenic River District, height limitations set for elsewhere in this chapter may be increased with no limitation when applied to the following structures:
(a) Public monuments;
(b) Flag poles;
(c) Cooling towers;
(d) Grain elevators, farm drying and grain storage facilities;
(e) Church spires, belfries or domes which do not contain usable space;
(f) Water towers;
(g) Chimneys or smokestacks;
(h) Forest fire watch towers;
(i) Silos;
(j) Power poles or other poles or towers upon which transmission lines are strung; and
(k) Radio or television transmitting towers.
(B) Lot requirements.
(1) Minimum lot area for a residential lot.
(a) The minimum lot size for a residential lot in the Annexation Reserve District is 35 acres.
(b) A parcel with a dwelling existing as of the date of adoption of this chapter may be reduced in size to a lot of no less than two and one-half acres; provided that, a conservation easement is recorded for the residual parcel prohibiting further development or subdivision. The terms of this conservation easement shall be those stated in the section of development agreements and recording of restrictions under the transfer of development rights regulations; except that, the easement may be terminated by the county at such time as the property is annexed by the adjacent municipality.
(2) Minimum lot area, all other uses. The minimum lot size for all other uses shall be two and one-half acres unless otherwise permitted under an approved conditional use permit.
(3) Minimum lot width. The minimum lot width shall be 250 feet.
(4) Minimum front yard setbacks. The minimum front yard setbacks shall be measured from the centerline of the road or from the property line (whichever is greater), as follows:
(a) State highway: 150 feet to centerline of roadway or 100 feet from front property line, whichever is greater; and
(b) County road or township road: 133 feet to centerline of roadway or 100 feet from front property line, whichever is greater.
(5) Minimum side yard setback. The minimum side yard setback is 20 feet, with the exception of buildings containing livestock, which shall have a minimum setback of 100 feet.
(6) Minimum rear yard setback. The minimum rear yard setbacks shall be as follows:
(a) Principal buildings: 100 feet;
(b) Accessory buildings: 20 feet; and
(c) Livestock buildings: 70 feet.