Mandatory Housing Affordability (MHA) Fee Areas

Note:  This map is not an official zoning map.  For precise zoning information, please call or visit the Seattle Municipal Tower, Seattle Department of Construction and InspectionsFor properties subject to Mandatory Housing Affordability, the fee areas map specifies the locational dimension of the MHA requirement.  Mandatory Housing Affordability requires new development to contribute to affordable housing by including affordable housing in the development or making a payment to the City’s Office of Housing to support affordable housing. The amount of the MHA contribution varies based on a property’s location and other factors specified in Seattle Municipal Code Chapters 23.58B and 23.58C.  For properties subject to MHA, the fee areas map specifies the locational dimension of the MHA requirement.  MHA amounts in Downtown and South Lake Union have specific requirement levels for each zone as listed in SMC 23.58B and 23.58C. For other areas, the relative high, medium or low aspect of the MHA requirement corresponds to market strength area of the city.  

Data and Resources

Field Value
accessLevel public
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identifier https://data-seattlecitygis.opendata.arcgis.com/datasets/SeattleCityGIS::mandatory-housing-affordability-mha-fee-areas
issued 2020-01-05
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license http://opendatacommons.org/licenses/pddl/summary
metadata_type geospatial
modified 2020-01-05
old-spatial -122.4308,47.4933,-122.2421,47.7359
publisher City of Seattle GIS Program
resource-type Dataset
source_datajson_identifier true
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theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • geo
  • geoss
  • land-use
  • mha
  • national
  • north-america
  • planning
  • sdcizoningmap
  • united-states
  • zoning
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer Planning_SeattleCityGIS
maintainer_email mapgis.mapgis@seattle.gov
metadata_created 2025-11-22T15:47:11.907441
metadata_modified 2025-11-22T15:47:11.907445
notes <p><span style='font-size:16px;'>Note:  This map is not an official zoning map.  For precise zoning information, please call or visit the Seattle Municipal Tower, </span><a href='https://www.seattle.gov/sdci/about-us' rel='nofollow ugc' style='font-size:12pt;' target='_blank'>Seattle Department of Construction and Inspections</a><br /></p><p>For properties subject to Mandatory Housing Affordability, the fee areas map specifies the locational dimension of the MHA requirement.  </p><p>Mandatory Housing Affordability requires new development to contribute to affordable housing by including affordable housing in the development or making a payment to the City’s Office of Housing to support affordable housing. The amount of the MHA contribution varies based on a property’s location and other factors specified in Seattle Municipal Code Chapters 23.58B and 23.58C.  For properties subject to MHA, the fee areas map specifies the locational dimension of the MHA requirement.  MHA amounts in Downtown and South Lake Union have specific requirement levels for each zone as listed in SMC 23.58B and 23.58C. For other areas, the relative high, medium or low aspect of the MHA requirement corresponds to market strength area of the city.  </p>
num_resources 6
num_tags 13
title Mandatory Housing Affordability (MHA) Fee Areas