R1-a districts are intended to reinforce the semi-rural setting in neighborhoods with large lots. Variation from the R1-a regulations shall require a Variance pursuant to Chapter 19.156 of the Cupertino Municipal Code in the R1-a district.
Table 19.28.090 sets forth the rules and regulations for building development in the R1-a district.
R1-a | ||
A. Maximum lot coverage | Refer to Section 19.28.070(A) | |
B. Maximum total floor area ratio | Refer to Section 19.28.070(B) | |
C. Maximum second to first floor area ratio | 1. 40% of the existing or proposed first floor area, except as follows: a. A second floor may be at least 750 square feet in area b. In no case shall a second floor be more than 1,100 square feet in area | |
D. Interior areas (measured from the floor to the top of roof rafters) with heights > 16 feet | Refer to Section 19.28.070(D) | |
E. Minimum setbacks (measured from property line) | ||
First floor | Second floor | |
1. Front yard | ||
a. Minimum setback | 30 feet | 30 feet |
b. Side entering garage with curved driveway | Refer to Section 19.28.070(E)(1)(b) | |
2. Side Yard | ||
a. Interior lot | 10 feet both sides | 35 feet combined (no side yard setback shall be less than 15 feet) |
b. Corner lot | 25 feet combined side yard setback | |
i. Interior side | 10 feet | 15 feet and must not be less than 20 feet from the rear property line of an adjacent single family dwelling |
ii. Street side | Refer to Section 19.28.070(E)(2)(b)(ii) | Refer to Section 19.28.070(F)(2)(b)(ii) |
c. Flag lot | 20 feet from any property line | |
3. Rear yard | 20 feet | 40 feet |
F. Second story design regulations | ||
1. Second to first floor wall plane | The second story shall not cantilever over a first story wall plane. | |
2. Front-facing wall plane(s) | The front-facing wall plane(s) of the second story must be offset a minimum of 3 feet from the first story wall plane(s). The intent of this regulation is to avoid a two story wall plane on the front elevation. | |
G. Front Yard Paving | 1. No more than 50% of the front yard setback area may be covered with a combination of impervious or semi-pervious surfaces. 2. No more than 40% of the front yard setback area may be covered with an impervious surface such as concrete or asphalt. | |
H. Corner triangle | Refer to Section 19.28.070(H) | |
I. Basements | ||
1. Number, size, and volume of lightwells | Refer to section 19.28.070(I)(1) | |
2. Minimum setbacks for lightwell retaining walls | ||
a. Side Yard | Refer to Section 19.28.070(I)(2)(a) | |
b. Rear yard | Refer to Section 19.28.070(I)(2)(b) | |
3. Lightwell railings | Refer to Section 19.28.070(I)(3) | |
4. Lightwell screening | Refer to Section 19.28.070(I)(4) | |
5. Root barrier measures | Refer to Section 19.28.070(I)(5) | |
J. Maximum height | ||
1. Total principal building height | Refer to Section 19.28.070(J)(1) | |
2. First floor building envelope | a. The maximum exterior wall height and building height on single-story structures and single-story sections of two-story structures must fit into the building envelope defined by: i. A 12 foot high vertical line from natural grade and located 10 feet from property lines; and ii. A 25 degree roof line angle projected inward at the 12 foot high line referenced above | |
3. Entry feature height | See Single-Family Residential Design Guidelines, Section 19.28.110(A)(6) | |
K. Minimum setbacks for second story decks, patios, balconies, or any other similarly unenclosed features. Second story decks may only be located on the front and rear of the house. All new or expanded second story decks with views into neighboring residential side or rear yards shall file for a Minor Residential Permit in accordance with Chapter 19.12, in order to protect the privacy of adjoining properties. The goal of this permit requirement is not to require complete visual protection but to address privacy protection to the greatest extent while still allowing the construction and use of an outdoor deck. | ||
1. Front of house | ||
a. Minimum setback to front property line | 30 feet | |
b. Minimum setback to side property line | 35 feet combined (no side yard setback shall be less than 15 feet) | |
2. Rear of house | ||
a. Minimum setback to rear property line | 40 feet | |
b. Minimum setback to side property line | 35 feet combined (no side yard setback shall be less than 15 feet) | |
L. Solar Design | Refer to Section 19.28.070(K) | |
(Ord. 2085, § 2 (part), 2011; Ord. 2079, (part), 2011)