Any use not expressly listed for a district is prohibited in that district, unless authorized by conditional use as uses not listed.

Accessory structures which are normally accessory to principal structures or uses authorized by conditional use shall be permitted by right.

Applications for permitted uses, special exceptions and conditional uses shall be reviewed in accordance with the procedures specified in this chapter.

Only one principal use, as identified in the Code of Ordinances, is permitted on a lot or parcel of land.

Corner lots. Corner lots shall provide front yards on each street frontage. The remaining two yards shall constitute a side yard and a rear yard. The rear yard shall be the yard which is opposite to the front yard on which the principal structure faces.

Permitted projections into required yards. The following shall be permitted to project into any required yard in any zoning district as follows:

Height exceptions. The height limitations of this chapter shall not apply to the following structures: church spires, chimneys, elevator bulk heads, conveyors, flagpoles, silos, standpipes, elevated water tanks, derricks, public utility structures and other structures not intended for human habitation. Satellite dish antennas shall be subject to the accessory use regulations of this chapter.

Lots which abut on more than one street shall provide a required front yard depth along each street.

Nothing in this chapter shall preclude the construction, operation and maintenance of public utility distribution and transmission or collection systems. Such systems may include poles, wires, underground pipes, transformers, conduit, and appurtenances for the transmission and/or distribution of the commodity or service pertaining to the public utility. Structures permitted for these systems shall be necessary to the natural distribution and transmission or collection and shall be in harmony, as much as possible, with the uses permitted in the zone where said building or structure is located.

Restricted building sites. Nothing may be built within or above an easement. Nothing may be built on a site known to be landslide-prone or which has a slope over 25% unless the foundation plans have been approved by a registered geotechnical or structural engineer and submitted with the request for a building permit. Issuance of a building permit is not a warranty against structural damage resulting from subsidence due to improper engineering, fill or previous site activities.

Clear sight triangle. On a corner lot, no structure, fence, wall, hedge or other planting shall be erected, placed, planted or allowed to grow in such a way as to impede vision of pedestrian and vehicular traffic within clear sight triangles on all corners between a height of 2 1/2 feet and seven feet above the center-line grades of intersecting streets. This shall apply to the clear sight triangle area formed by the intersecting center lines of the street measured along each center line forming two sides of the triangle. The third side closes the triangle as it traverses the corner lot. There is no parking permitted within the clear sight triangle.

Basement structures. Earth homes which are designed to take advantage of the insulating qualities of earthen fill along walls and over the roof of a dwelling shall not be considered basement structures. No residential uses or occupancy shall be permitted in basements prior to the completion of the total structure.

When a commercial use abuts a residentially zoned property not separated by an alley or a road, special consideration shall be given to lighting, screening and noise levels so as not to interfere with or restrict the lawful use and enjoyment by others of their property. Additional buffer may be recommended in each particular conditional use or special exception depending on proposed use and as determined by the appropriate reviewing body.

The required rear yard on a site proposed for a commercial or institutional structure, when adjacent to residential properties and are not separated by a dedicated street or alley, may be reduced by 20% by providing a transitional buffer area (minimum 20 feet), which provides screening by landscaping, walls or mounding. In a commercial zone, all buildings proposed to be located within 40 feet of a residential property shall be limited to two stories in height.

For a multifamily dwelling adjoining a single-family use or A-1 or R-2 Zoning District, the minimum side yard is 50 feet per side.

Minimum distance between buildings. In multifamily developments where more than one building is authorized on a lot, the following minimum distances between buildings shall be provided:

Location. Only properties immediately abutting the Route 136 road right-of-way.

Minimum lot frontage (along Route 136 road right-of-way): 150 feet.

Minimum lot depth: 500 feet measured from the Route 136 road right-of-way at all points along the lot frontage.

Access. Vehicular access must be from Route 136 only.

Residential buffering. The Board of Supervisors may require additional buffering where proposed Route 136 Overlay land uses abut existing or proposed residential land uses.