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designed in a manner that does not render any adjacent vacant properties "unbuildable"for development when well and/or septic tank facilities would be required to service development on those adjacent properties. 11. No accessory dwelling unit shall be sold separately from the principal dwelling unit. The accessory dwelling unit and the principal dwelling unit shall be located on a single lot or parcel or on a combination of lots or parcels unified under a recorded unity of title document. 12. An accessory dwelling unit shall be treated as a multi family unit for traffic impact fee and traffic concurrency purposes, and the concurrency requirements of Chapter 910 for a multi family unit shall be satisfied On February 18, 2020, the BCC approved a recommendation by the AHAC to increase the square footage cap for accessory dwelling units from 33% to 50% of heated/cooled gross floor area of the principal home and to keep the 750 square foot under air cap, except for lots greater than one acre in size containing a principal residence greater than 2,500 square feet under air. In those cases, the accessory dwelling unit cap would be 1,000 square feet. While the BCC approved the AHAC recommendation, the next step to implement is to update the County's Land Development Regulations. ANALYSIS: On September 29, 1992, the Board of County Commissioners adopted the county's accessory dwelling unit provision. In Indian River County, accessory dwelling units are allowed in all residential zoning districts. In addition to allowing for these smaller units, Section 971.41(10) of the county's land development regulations establishes specific land use criteria to regulate the size, location and appearance of these units and prevent over crowding. Even though the county has allowed accessory dwelling units since 1992, these types of units were not popular until 2004, when the price of land and housing started to increase. When housing affordability became an issue, more people started looking at ways to create affordable housing units. One method was to build more accessory dwelling units. These types of units are appropriate as affordable housing units. Recently recommended revisions will allow more opportunities for homeowners to create more appropriately sized affordable housing units throughout the Unincorporated County. Most recently the Indian River County Community Development Department is in the process of creating a new program funded by American Rescue Plan funds to encourage the construction of ADUs as an affordable alternative in light of the current housing and public health crisis. RECOMMENDATION: The county's accessory dwelling unit provision with modifications proposed by AHAC is appropriate and should be modified as recommended. 147