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'JUN 22 0011 k), -7 BOOK 89 N" 894 Since adoption of the comprehensive plan, the county has issued building permits for over 1939 dwelling units. The effect of this construction activity has been to lower the county's residential allocation ratio. While the number of units allowed by the comprehensive plan based upon established densities remains essentially unchangedg, the number of existing units has increased by over 1939. Because the projected number of units needed can be revised to reflect a new 20 year period (now 1993-2013),, the denominator of the allocation formula has increased somewhat. Consequently, the ratio is now lower than that reflected by the Indian River County/DCA agreement. Staff's position is that densities allowed by the comprehensive plan can now be increased to the extent that the additional units which can be accommodated by the density increase do not exceed the number of units that have been permitted since plan adoption. In this way, the residential allocation ratio will not increase above the approved level. With respect to the proposed amendment, staff has determined that the increase in potential units associated with the proposed density increase will be 1920. That is based on the following information: 1. Total Acres: 3200 2. Net Acres: 2400 (Total Acres X 0.75) 3. Maximum Units in Rural Designation (1 unit/acre): 2400 4. Maximum Units in Agricultural Designation (1 unit/5 acres): 480 5. Net Increase in Units (2400 - 480): 1920 Using a conservative estimate, 800 acres, or 25%, of the subject property's 3200 acres will be used for infrastructure such as roads and stormwater retention. Removing land used for infreetructure leaves up to 2400 acres for residences. At the proposed density of up to 1 unit/acre,, 2400 units could be built on the subject property. This is an increase of 1920 units over the 480 units that could be built under the existing designation of up to 1 unit/5 acres. As indicated, the proposed amendment's increase of 1920 units is slightly less than the 1939 units for which building permits were issued in the years 1990-1992. For that reason, staff's position is that the proposed amendment- will not increase the county's residential allocation ratio. Alternatives With respect to this issue, there are several alternatives available to the Board of County Commissioners. These are: 1. Deny transmittal of this amendment to the DCA. 2. Approve transmittal to DCA of an amendment enlarging the USA to include the approximately 3200 acres depicted on attachment 2 where service is available, or is programmed to be available by 1995, and the 58th Avenue corridorl but retaining the AG -10 Agricultural -1, land use designation for affected properties. 20