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<br />Figure A-1. Components of a land Needs Assessment <br /> <br />Demand <br /> <br />Residential 1. Population <br />- Amount <br />- Household size - <br />- Age of HH head <br />- Income <br /> <br />Prices <br />- Land <br />- Units - <br />- Building cost <br />- Rental rate <br /> <br />Commercial - <br /> <br />Employment <br />r+ _ Amount, by type <br /> <br />Average persons per <br />---. dwelling unit ~ <br />Vacancy rates <br /> <br />-" <br /> <br />Industrial <br /> <br />i -+ <br /> <br />Estimate of 20- <br />year demand for <br />built space <br />(residential and <br />nonresidential) <br /> <br />I--- <br /> <br />Square feet of built <br />----. space per employee - <br />Employees per acre <br /> <br />+ <br /> <br />Supplv <br /> <br />Jl. <br /> <br />Estimate of 20- <br />year demand for <br />land, by type <br /> <br />At the parcel level <br />_ Total acres <br />- Developed acres <br />= Vacant acres <br /> <br />Physical Constraints <br />- Floodway <br />- Floodplain <br />- Riparian buffer -- <br />- Wetland <br />- Steep slopes <br />- Other hazards <br /> <br />.. Vacant acres <br />- Constrained vacant acres <br />= Vacant buildable acres (gross) <br />- Land for other uses (roads, schools, parks, etc.) <br />= Vacant buildable acres (net) <br />+ Redevelopable acres (net) <br />= Total Buildable Land Supply (net) <br /> <br />~ <br /> <br />...... <br />"""III <br /> <br />Ratio of <br />improvement to <br />land value <br /> <br />- Residential <br /> <br />- Com mercial <br />Offi ce <br />Retail <br />- Industrial <br /> <br />Source: ECONorthwest <br /> <br />LAND SUPPLY <br /> <br />Land supply inventories are primarily about existing conditions. Analysts do <br />not typically forecast future supply independently. Rather, they forecast demand <br />and then look at existing buildable and potentially-buildable supply to see how to <br /> <br />DRAFT: Commercial and Industrial Lands Database <br /> <br />ECONorthwest <br /> <br />July 2006 <br /> <br />Page 19 <br />