§ 2.06.03. AHDB Rating System

A.

The AHDB rating system shall be used to determine the amount of the AHDB which may be granted for a development, based on household income level, type of affordable housing units (owner-occupied or rental, single-family or multi-family), and percentage of affordable housing units in the development. To use the AHDB rating system, Table A below, shall be used. Table A shall be reviewed and updated, if necessary, on an annual basis by the BCC or its designee.

Table A. Affordable Housing Density Bonus
(Additional Available Dwelling Units Per Gross Acre)

Maximum Allowable Density Bonus by Percent of Development Designated as Affordable Housing 1, 2, 3
Product (% of MI)	10%	20%	30%	40%	50%	60%	70%	80%	90%	100%
Gap (>120—≤140) 4, 5	1	2	3	4	5	6	7	8	n/a	n/a
Moderate (>80—≤120)	2	4	5	6	7	8	9	10	11	12
Low (>50—≤80)	3	6	7	8	9	10	11	12	12	12
Very-Low (≤50)	7	8	9	10	11	12	12	12	12	12

 

Total Allowable Density = Base Density + Affordable Housing Density Bonus. In no event shall the maximum gross density exceed that which is allowed pursuant to the GMP.

Developments with percentages of affordable housing units which fall in between the percentages shown on Table A shall receive an AHDB equal to the lower of the two percentages it lies between, plus 1/10 of a residential dwelling unit per gross acre for each additional percentage of affordable housing units in the development.

Where more than one type of affordable housing unit (based on level of income shown above) is proposed for a development, the AHDB for each type shall be calculated separately. After the AHDB calculations for each type of affordable housing unit have been completed, the AHDB for each type of unit shall be added to those for the other type(s) to determine the maximum AHDB available for the development. In no event shall the AHDB exceed 12 dwelling units per gross acre.

Owner-occupied only.

May only be used in conjunction with at least 20% at or below 120% MI.

B.

The AHDB shall be available to a development only to the extent that it otherwise complies and is consistent with the GMP and the land development regulations, including the procedures, requirements, conditions, and criteria for "PUDs" and rezonings, where applicable.

C.

The minimum number of affordable housing units that shall be provided in a development pursuant to this section shall be 10 percent of the total housing units.

D.

The ratio of number of bedrooms per affordable housing unit shall in general be equal to the ratio of the number of bedrooms per residential unit for the entire development.

(Ord. No. 05-27, § 3.H; Ord. No. 06-14, § 3.A; Ord. No. 19-02, § 3.D)