Reso 1661 81,003.22
RESOLUTION NO. 1661
OF THE PLANNING COMMISSION OF THE CITY OF CUPERTINO
REAFFIRMING ITS POSITION DELINEATED IN PLANNING
COMMISSION RESOLUTION NO. 1634 REGARDING A ROUNDING
OFF POLICY FOR SLOPE DENSITY FORMULA YIELDS.
PASSED AND ADOPTED this 28th day of February, 1977, at a regular meeting of
the Planning Commission of the City of Cupertino, State of California, by
the following roll call vote:
AYES : Commissioners Blaine, Gatto, Koenitzer, Markkula, Chairman Adams
NAYS: None
ABSTAIN: None
ABSENT: None
APPROVED:
Victor J. ',dams, Chairman
Planning tj.mmission
ATTEST:
ames H. Sisk
Planning Director
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SUMMARY
AGENDA ITEM NUMBER AGENDA DATE March 7. 1977
-SUBJECT AND ISSUE--Mounding Off of Slope-Density Yields in Hillside Areas
BACKGROUND
During its meeting of February 28, 1977, the Planning Commission reaffirmed its
earlier position regarding the rounding of slope-density yields. The Commission
determined that it would be inappropriate to round up to the next whole number
for a dwelling unit yield of less than 5.5 permitted dwellings. The Commission
determined that in effect since a person cannot build a portion of a dwelling
unit (i.e. cannot build 9/10 of a unit if theoretical yield is 3.9) , an increase
to the next whole number could result in percentage yield far in excess of the 10%
increase criteria recommended by staff. Using the Commission's philosophy, the
increase in density from 1.82 to 2 is a 100% increase, since no credit is given
for the .82 increment.
STAFF RECOMMENDATION
The Planning Commission's report regarding slope-density rounding is contained
within Resolution No. 1661. For comparison purposes, the staff recommendation
is attached.
Enclosures:
Staff Report - 2-23-77
Planning Commission Resolutions No. 1634 & 1661
Excerpt from February 22 Memo : Staff's Policy Recommendation
City of Cupertino Slope-Density Formula Rounding Off Policy
The City Council, during its meeting of March 7, 1977 , adopted the
following policy regarding the rounding up of a numerical dwelling
unit yield resulting from application of a slope-density formula:
"The rounding up of the numerical yield resulting from
application of a slope-density formula may be permitted
in cases where the incremental increase in density from
the actual yield to the rounded yield will not result
in a 10% increase of the actual yield. In no case shall
an actual yield be rounded up to the next whole number
unless the fractional number is .5 or greater."
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1 Slope Density Gr.acres Average D.U.per per D.U. lot area
gr.acreI s (i) a CA gr.sq.ft.
�A 1/d 43,56_0
0-5 3.500 -L--` 3-S 33 0.285 12,445
6 3.494 ` 3 . LI 9S 0.286 12,467
7 3.477 _ 3o9eo 0.288 12,528
8 3.448 3 . 4 5-Li 0.290 12,633
d 9 3.408 3 a `f I 0.293 12,781
] 10: 3.357, 30 37Lf 0 7, 0.298 12,975
11 3.296 3 0 3 z0 0.303 13,868
12 3.224 3 . 257 0. 310 13,511I
13 3.143 -3, le, S 0.318 13,868
14 3.053 3 i 45 0.328 14,267
I15 2.954 .a , 0 17 0.339 14,746
16 2.848 ? -?22 0.351 15,294
17 2.734 - 2, 320 0.366 15,932
18 2.614 —2, ri 12- 0.383 16,664
19 2.489 2 .599 II0.402 17,501
20 2.360 2 . �$ i ,i'/3 0.424 18,457
21 2.227 2 , 3 60 0.449 19,559
I22 2.000 Z , 2-'3 S 0.500 21,780
23 1.954 a • (c)8 0.512 22,292
24 1.815 -- 1 0017c7 0.551
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I25 1.678 1 , 3 5 0.596 25,959
26 1.541 - I ) 7 Z I 0.649 28,267
27 1.406 t , 51 2, 0.711 30,981
28 1.275 t , y 65 0.784 34,164
29 1.147 -- 1 . 40 0.872 37,977
I 30 1.02500 I oZi1 iV0 0.976
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31 0.908 • I , !:j ( 1.101 47,973
I 32 0.798 -- , q .3-, 1.253 55,209
111 33 0.696 , g 8 0 1.437 62,586
34 0.601 — , 7'7 1.664 72,479
35 0.515 -
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36 0.439 0 i C-ii 2.278 99,225
37 0.372 ---- , 5 ' S 2.688 117,096
38 0.315 138,285
o �i�3 3.175
39 0.270 O 3 3.698 161,081
4 0.236 , 3 :� S 3' 4.240 184,576
;� 0.213 , -, ' 1 4.694 204,507
I42 0.201 ° 2 1b ,Z74.980 216,716
43 0.200 ---- J 2_0 itblf 5.000 217,800
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SLOPE CENSITY "GRID-METHOD", WORK SHEET
PROPERTY DESCRIPTION: EgilArl- -
DWELLING UNIT CREDIT FROM SlbOrE/DENSITY TABLES
A B C D E F G" H tr.(r-r t J - K
LAND UNIT (acres) AREA Ng fl) CONTOUR As SLOPE FACTORFOOTHILL MOD F0:72H1/1 :000
SEMI-HoRAL CCUNTY III
I etztiFics. 1.14 :49400 ""/W 15
t C-0/40175. I,1 8 51 soo 48o 13.3 0. 5/1, 60,615. • •
1 -5TP• 0,qt 40000 320 B. 0 et 4i 5 Q. .5/
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Table 1
Slope-Density Yield Thresholds for Rounding Up
to Next Whole Number Based Upon 10%
Maximum Increase Rule
Threshold Yield to Rounded Density
Permit Rounding Yield Computation
1.82 to 2 .18 j 1.82 = 0.098
2.73 to 3 .27 j 2.73 = "
3.64 to 4 .36 + 3.64 = "
4.55 to 5 .45 _ 4.55 = "
.J ( .5 Cut-off Point )
5.46 to 6 .54 � 5.46 = "
6.37 to 7 .63 y 6.37 = "
7.28 to 8 .72 j 7.28 =
tt
8.19 to 9 .81 i 8.19 =
9.10 to 10 .90 + 9.10 = "
