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OCT-28 99 11:20 FROM: .... e TO:r:e755 8923 PAGE: 02/04 . ,< ,,. '" ~ Metropolitan Council Worlcing for (he Region. Planning for /he Future DATE: December 30, 1997 Internal M emorandllm TO: Craig Rapp, Tom McElveen FROM: Richard Thompson, Bob Davis SUBJECT: Density Defmition and Examples The Metropolitan Council defines residential density in the following way. Only residential land is. included in the deflJ1ilion and only dweIHng units, either single family, duple~es, multifamily or congregate housing. Residential land is calculated to include land for residences and streets. In general, land uses that are removed from that calculation are land uses that can be measured such as parks, wetlands and four-lane, divided highways. Simply put, densiry is defined as the amount of residential acreage (either within a communiry or a subdivision) minus parks, wetlands and four-lane divided highways divided by the number of housing units (either within a community or a subdivision). The Council calculates residential densiry based upon its land use survey (see "Land Use Profiles: Acreage Summaries and Maps by Community (I 990)") or by updated infonnation provided by a community. The Council survey of residential land includes buildings and associated yard areas . which extend to the neighboring property line or the center line of the adjOining road, street Or alley (thus the residential property includes some street, alley or road Mea) because there is no way to measure the narrow transportation rights-of-way. Examples: 1) CommuniryExample Farmington in 1990 had a total of824 residential acres (single family, multi family and isolated households). In 1990 it had 2064 households which leads to a residential density of2.5 units per acre: 2064 I 824 :.: 2.5 units per acre 2) Multi-Family Example A community has a 40-acre parcel with four acres of wetlands and four acres to be designated as parkland. The developer is proposing to construct 280 townhouses on the parcel. 40 acres - 4 acres (wetland) - 4 acres (parkland) = 32 residential acres 280/32 = 8.7S units per acre density for this multifamily development' . 3) Single-Family Example A developer is proposing to develop 120 acres in single family housing. The land has 8 acres of wetlands, and the dry requires 12 acres (10%) dedicalion for parkland. He rhus has 100 residential acres. He is proposing to put 300 homes on this land. His residential density is 3.0 units per acre. OCT 28 '99 12:26