Minimum lot size in all zoning districts: 0.5 acre.

Minimum road frontage: 150 feet.

AC, AR, RS1, RS5, RMH Zoning Districts.

RM Zoning District.

Front setbacks from nonsubdivision streets shall be 40 feet.

For major subdivision and land development applications, the Regional Planning Commission, upon the request of an applicant, may authorize a reduction in the required front yard setback to achieve an overall neighborhood design objective, if alleys are proposed. Two off-street parking spaces per unit will still be required.

Principal nonresidential structures must also meet the setbacks of this section [Subsection D(4)].

AC, AR, RS1, RS5, RMH Zoning Districts: maximum height of 35 feet.

RM Zoning District: maximum height of 50 feet.

Maximum height may be increased above the limitation of Subsection D(1) and (2) of this section for elevation required by the National Flood Insurance Program.

Principal nonresidential structures:

Front (subdivision street): 30 feet.

Side: 15 feet.

Rear: 30 feet.

AC, AR, RS1, RS5, RMH Zoning Districts: 35 feet.

RM Zoning District: 50 feet.

Maximum height may be increased above the limitation of Subsection D(1)and (2) of this section for elevation required by the National Flood Insurance Program.

Principal nonresidential structures.

AC, AR, RS1, RS5, RM, RMH: 20 feet.

Accessory structures or accessory uses shall be limited and located on the same lot with the principal structure or use to which they are necessary.

Any accessory structure attached to a principal structure, including attachment by means of a breezeway or roof passage, shall comply with the requirements of this chapter concerning principal structures. All other accessory structures shall conform to the requirements for accessory structures in the district in which they are located.

In an AC, AR, RMH, RM, RS5, or RS1 Residential District, an accessory structure on the same lot with a residential use may not be used for residential purposes except properly approved ECHO housing or a properly approved accessory dwelling unit.

An accessory structure may dominate the area of the principal structure by not more than 10%. The total square footage of both the principal and accessory structures shall be calculated using the definition of floor area in this chapter with the inclusion of attached garages and covered porches.

A noncommercial antenna structure or satellite dish may be authorized as an accessory structure in any residential district, provided that:

No lot may be created without adequate street frontage, and such lots shall be determined to be unbuildable.

Except as provided in a specific zoning district, a structure may not be used in whole or in part for residential purposes unless the lot in which it is located:

No more than one structure used in whole or in part for residential purposes shall be permitted for each frontage or easement, except that a common easement of access measuring at least 40 feet wide may be provided for two or more structures.

On a corner lot, the front street shall be the street with the shorter street frontage.

Any setback or other open space allocated to a structure shall be located on the same lot as the structure.

Except as provided in this subsection, required setback and open space shall be unobstructed and open to the sky.

Architectural features for principal structures, such as windows, sills, chimneys, bilco doors, egress windows, cornices, eaves, or bay windows may project no more than three feet into a required yard area and no closer than five feet from any lot line. The sum of the bay window projections on a wall may not exceed 1/4 of the length of the wall.

An open unenclosed porch, patio, or deck may project into required side and rear setback areas, provided that all such structures shall observe a minimum setback of 10 feet from all side and rear property lines or may extend into the required front yard setback no more than 40% of the required front yard setback, and no closer than 15 feet to the right-of-way line. Furthermore, if a nonconforming front yard setback exists, created by the lawful construction of the principal structure, the 40% shall be determined based on the legal nonconforming front yard setback. This section does not extend to properties where variances were granted for relief of the front yard setback. All open unenclosed porches, patios, and decks that project into the required setback shall be constructed at grade or at the first-floor level of the building. Any enclosed porch, patio, or deck, or porch having a roof and capable of being enclosed, shall be considered a part of the structure in the determination of the size of the setback or the amount of lot coverage, except that a porch, patio, or deck with only a roof and no walls of any type may project into the required front setback by no more than six feet. Any porch, patio, or deck, both enclosed and unenclosed, shall not occupy more than 30% of the minimum required side or rear yard setback area.

Notwithstanding any provision to the contrary, if the average front yard setback of structures located on either side of a lot differs from the minimum setback required by this chapter, the setback shall approximate the average setback of the next nearest structures.

Handicapped ramps open, unenclosed and not covered by a roof or canopy shall maintain a five-foot setback from the front, side, and rear property lines.

Fences, walls, and hedges.

Recreation facilities (residential and nonresidential).

Applicability.

Roof features, such as water tanks, cooling towers, air-conditioning units, elevator shafts and bulkheads, shall be enclosed within the walls of the structure and designed in harmony with the main walls of the structure on which they are located.

A public governmental building, place of worship or hospital may be erected to a greater height than otherwise permitted, provided that the front, side and rear setbacks are increased not less than one foot for each foot by which the structure exceeds the height limitation established for the district in which the structure is located.

Unless otherwise provided in this section, a parapet wall may extend not more than five feet above the height limit for the district in which it is located.

Slopes with a grade of 15% or greater may not be developed unless:

A fifty-foot planted buffer area shall be located and maintained between the principal structure and the crest of slopes with a grade of 25% or greater.

Drainage for structures and lots may not be channelized toward any slope of a 15% grade or greater.