Fences.[1] Fences shall not exceed four feet in height, with the exception of privet hedges, trees or other shrubbery line markers, which are not limited in height. No wall, fence or other structure shall be erected or altered and no hedge, tree, shrub or other growth shall be maintained so as to obscure the view and create a dangerous traffic hazard. For the purpose of this chapter, a traffic hazard is deemed to be created by any fence, wall or other structure or any hedge, tree, shrub or other growth maintained within eight feet of the paved surface of a road, street or lane.

Retaining walls.[2] Retaining walls shall not extend above the surface of the ground which they support. When the top of any retaining wall erected to raise or lower the level of any lot or plot of land is higher than three feet above the grade at any point on the lower side of the retaining wall, such wall must be set back from the property line two feet for every foot in excess of three feet. For instance, a five-foot wall must be set back four feet. The slope of the ground supported by a retaining wall shall not exceed 30° from a horizontal plane measured from the point where the top of the wall and the back of the wall intersect. No retaining wall shall exceed four feet in height.

Outdoor fireplaces and firepits. Notwithstanding Subsection B below, stationary outdoor fireplaces and firepits shall be at least 20 feet distant from side and rear property lines and shall not exceed 10 feet in height.

Ponds. Ponds shall not exceed two feet in depth, and no such pond shall be constructed except in compliance with the regulations of Nassau County Department of Health and unless provided with a drain or outlet to permit the same to be emptied.

Pergolas. Notwithstanding Subsection B below, pergolas shall not exceed 10 feet in height.

Driveways. There shall be no more than one driveway (with appurtenant curb cut) providing a single means of ingress/egress to a street to/from a single lot.

Except for a single driveway (with appurtenant curb cut), no buildings or structures shall be permitted in the front yard.

Accessory buildings shall be required to meet the height/setback ratio requirements of § 225-7 of this chapter, but in no case shall an accessory structure or building exceed 15 feet in height or be more than one story in height, nor shall it be located less than 15 feet from a rear or side property line. Notwithstanding the setback requirements herein, sheds of less than 120 square feet in area, may be set back five feet from the rear and side property lines.

No accessory building or buildings shall occupy more than 15% of the area of the rear yard.

The gross floor area of accessory buildings shall be included in the computation of maximum permitted floor area ratio, and the building area of all accessory buildings shall be included in computation of maximum permitted building coverage and lot coverage.

Garage entrance doors shall not face a street but shall face the side or rear property lines.

No more than two accessory buildings shall be allowed per primary structure. The requirement of no more that two accessory buildings shall not include one freestanding garage preexisting as of the date of the enactment of this subsection.