Except as provided in this chapter, all yards or setbacks shall be as set forth in the land use districts or zones.
(a)
Where setbacks are provided within a land use district, front yard setbacks shall mean distance from a road right-of-way unless otherwise specified within this section.
(b)
Where setbacks are provided within a land use district, side and rear yard setbacks are from adjacent lot lines unless otherwise specified within this section.
(c)
Yards or other open spaces required around an existing building or which are hereafter provided around any building for the purpose of complying with the yard provisions of a land use district shall not be considered as providing a yard or open space for any other building.
(d)
Yards or required open space on an adjoining lot shall not be considered as providing a yard or open space on a lot whereon a building is to be erected.
(e)
On through lots, front yards shall be provided on all street frontages.
(f)
If any future right-of-way line has been established by provisions of a specific ordinance, planning area, Specific Plan, or similar document, the measurement of the yard shall be made from the future right-of-way or future property line.
(g)
All street setbacks shall include provision for a minimum half-width of 25 feet for any valley right-of-way unless otherwise specified by provisions of a specific ordinance, planning area, Specific Plan or similar document.
(h)
Side yards on the street sides of corner lots require the same building setback as do front yards unless otherwise specified within the provisions of a land use district, ordinance, planning area overlay, Specific Plan or similar regulation.
(i)
When the side lines of a lot converge to a point or to a rear lot line narrower than 10 feet, for setback purposes the rear lot line is considered to be a line parallel to the front lot line measuring 10 feet between the two side lot lines. The rear yard depth is measured from the 10-foot line to the nearest part of the principal building on the lot.
(j)
For the purposes of side yard regulations, the following dwellings with common party walls shall be considered as one building occupying one lot: semi-detached two and four-family dwellings, row dwellings, group dwellings, and court apartments.
(k)
Street setback lines, as delineated on all Final Maps, Parcel Maps, and Records of Survey maps recorded in said City between March 1, 1948 and January 1, 1987, or on Composite Development Plans on file with the Office of Building and Safety shall be the street and yard setback distances required on the property within said Final Maps, Parcel Maps, or Records of Survey. Notwithstanding any other provisions of the Development Code, any request to modify or deviate from a building setback line designated on a recorded map or final map shall be made in accordance with the provisions of Section 83.030905 regarding variances.
(l)
Any primary use structure which is constructed upon a portion of two or more lots which are held in a common contiguous ownership shall not be required to adhere to the yard setback requirements specified for those lot lines upon which the construction has taken place. All other requirements specified by this Code shall apply to this type of construction, including those requirements for distance between structures and required setbacks as measured from the combined perimeter boundary of the contiguous parcels.
(m)
Front street setback lines shall be established so wherever possible the yard width at such a setback line is at least the minimum width specified by the applicable land use district, unless otherwise allowed by this Code.
In computing the depth of a rear yard where such yard opens into an alley, one-half the width of such alley may be assumed to be a portion of the required rear yard.
(a)
Adequate visibility for vehicular and pedestrian traffic shall be provided at clear sight triangles at all 90-degree angle intersections of public rights-of-way and private driveways, through the following measures.