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<br />4. Calculate total net buildable acres by land use designation by adding <br />redevelopable acres to net buildable acres. Some developed land will <br />redevelop during the planning period, the inventory should identify lands <br />with redevelopment potential and include them in the inventory-unless <br />the analysis is addressing redevelopment from the demand side. Even if <br />the analysis addresses redevelopment from the demand side, a supply side <br />analysis is useful to determine whether a suitable number of redevelopable <br />sites exist to accommodate the amount of growth allocated. <br /> <br />5. Calculate development capacity by dividing net buildable acres by density <br />assumptions. The capacity analysis results in estimates of the number of <br />dwelling units and employees that buildable lands can accommodate. The <br />capacity analysis requires assumptions about gross density by land use <br />designations. Assumptions for residential lands are expressed in dwelling <br />units per gross acre, while assumptions for commercial and industrial <br />lands are expressed in employees per acre. <br /> <br />The basic steps and data elements for the supply analysis can be easily <br />displayed in table format. Table A-3 illustrates the basic hierarchy of data <br />elements in a table format. <br /> <br />Gross Buildable Acre - an acre of vacant land before land has been dedicated for public right-of-way, private streets, or public utility <br />easements. For example, a standard assumption is that between 20% and 30% of land in a subdivision is used for streets and utilities: if so, <br />then a gross vacant acre will yield only about 35,000 sq. ft. (70%-80% of a full acre) for lots. <br /> <br />Net Buildable Acre - an acre of vacant land after land has been dedicated for public right-of-way, private streets, or utility easements. A <br />net vacant acre has 43,560 square feet available for construction, because no further street or utility dedications are required: all the land is <br />in lots. <br /> <br />DRAFT: Commercial and Industrial Lands Database <br /> <br />ECONorthwest <br /> <br />July 2006 <br /> <br />Page 24 <br />