A. Purpose

This Section provides uniform methods for determining residential densities on individual
.

B. Applicability

Residential
for all residential projects is calculated as follows.

1. Residential
in residential projects is based on one dwelling unit per minimum size
by area, exclusive of any
and drainageway dedications or exclusive use easements. Because the acreage of a
used for
and drainageway purposes differs for each
, it is difficult to provide a simple calculation that would give an exact
figure.

The following provide two methods of calculating approximate
for a
. The number of units obtained through these calculations is an estimate and can only be verified by the actual design of the
. Should there be a need to express a
ratio per
, for comparison purposes only, such ratio will be calculated using the second method assuming 30 percent of the
would be used for
, drainageways, or other uses whose acreage is not included to calculate allowable
.

a. The first method of calculation gives the highest possible
that can be achieved on a
. However, to achieve this
, the following two design criteria must be present. (See Figure 6.4.7-A Residential
, Method 1)

i. The property can be developed without additional dedications for
, drainageways, or exclusive use easements.

ii. Each
is the minimum size permitted by the underlying
.

The
, expressed in square feet, is divided by the minimum
permitted by the underlying
.

: 71,400 square feet (sf) or 1.64

Minimum : 7,000 sf

Approximate No. of Units = ÷ Minimum

= 71,400 sf ÷ 7,000 sf

= 10.2 units

= 10 units + .2 remainder

Approximate = Units ÷

= 10.2 units ÷ 1.64

= 6.22 dwelling units/

Minimum : 7,000 sf

Approximate No. of Units = ÷ Minimum

= 71,400 sf ÷ 7,000 sf

= 10.2 units

= 10 units + .2 remainder

Approximate = Units ÷

= 10.2 units ÷ 1.64

= 6.22 dwelling units/

Figure 6.4.7-A Residential
, Method 1

b. The second method assumes that the
design requires dedication of either
, drainageways, or exclusive use easements or will have other
conditions that do not allow every square foot of the property to be included in an individual
. Also, due to varying widths of
and drainageway
and
configurations, it is impossible to
an exact number of units or lots that can be achieved. Since the amount of
used for
, drainageways, etc., varies from
to
, it is necessary to approximate the amount of
by percentage that will be needed for those purposes. It will be assumed, to illustrate the calculations, that 30 percent of the
will be utilized for such purposes. (See Figure 6.4.7-B Residential
, Method 2)

The calculation is the
, expressed in square feet, minus 30 percent of the
, divided by the minimum
permitted by the underlying
.

: 87,120 square feet (sf) or 2

Minimum : 7,000 sf

for streets, etc.: 26,136 sf (approximately 30%)

Approx. No. of Units = ( - 30% of ) ÷ Minimum

= (87,120 sf - 26,136 sf) ÷ 7,000 sf

= 8.71 units

= 8 units + .71 remainder

Approx. = Units ÷

= 8 units ÷ 2

= 4 dwelling units/

Minimum : 7,000 sf

for streets, etc.: 26,136 sf (approximately 30%)

Approx. No. of Units = ( - 30% of ) ÷ Minimum

= (87,120 sf - 26,136 sf) ÷ 7,000 sf

= 8.71 units

= 8 units + .71 remainder

Approx. = Units ÷

= 8 units ÷ 2

= 4 dwelling units/

Figure 6.4.7-B Residential
, Method 2

2. Residential
in multifamily
developed is calculated in the following manner.

a. Multiply the area of the
, in acreage, by the
(units per
ratio) permitted by the underlying zoning.

Example:

Units Per Ratio: 15.0

: 6

Calculation:

Units per x = no. of units

15 x 6 = 90 units

Units Per Ratio: 15.0

: 6

Calculation:

Units per x = no. of units

15 x 6 = 90 units

b. Exception. Any
or sold at
to the City for public purposes is included as part of the
for calculation of
, provided:

i. The additional
is less than 10 percent of the
permissible for the rest of the
;

ii. Such dedication was not a condition of approval for applications, such as, but not limited to,
or variance requests;

iii. Such dedication does not include
as part of a
; and

iv. A legally binding agreement to
or sell at
to the City is submitted as part of the application.

3. Residential
in Flexible
is based on the
(as defined in Section 11.4.5 Definitions - D) of the
.

(Ord. 11171, 5/20/2014)