Web services > LiDAR > Michigan > 2020-2024
Building Footprints, 2024 [Michigan]
SEMCOG, Southeast Michigan Council of Governments · 2024 Full Details
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Full Details
- Title
- Building Footprints, 2024 [Michigan]
- Description
- B.1 Buildings Inventory The Building Footprints data layer is an inventory of buildings in Southeast Michigan representing both the shape of the building and attributes related to the location, size, and use of the structure. The layer was first developed in 2010 using heads-up digitizing to trace the outlines of buildings from 2010 one foot resolution aerial photography. This process was later repeated using six inch resolution imagery in 2015, 2020, and 2024 to add recently constructed buildings to the inventory. Due to differences in spatial accuracy between the 2010 imagery and later imagery sources, footprint polygons delineated in 2010 may appear shifted compared with imagery that is more recent. Building Definition For the purposes of this data layer, a building is defined as a structure containing one or more housing units AND/OR at least 250 square feet of nonresidential job space. Detached garages, pole barns, utility sheds, and most structures on agricultural or recreational land uses are therefore not considered buildings as they do not contain housing units or dedicated nonresidential job space. How Current is the Buildings Footprints Layer The building footprints data layer is current as of December 31, 2024. This date was chose to align with the timing of the 2020 Decennial Census, so that accurate comparisons of housing unit change can be made to evaluate the quality of Census data. Temporal Aspects The building footprints data layer is designed to be temporal in nature, so that an accurate inventory of buildings at any point in time since the origination of the layer in April 2010 can be visualized. To facilitate this, when existing buildings are demolished the demolition date is recorded but they are not removed from the inventory. To view only current buildings, you must filter the data layer using the expression, WHERE DEMOLISHED IS NULL. B.2 Building Footprints Attributes Table B-1 list the current attributes of the building footprints data layer. Additional information about certain fields follows the attribute list. Table B-1 Building Footprints Attributes FIELD TYPE DESCRIPTION BUILDING_ID Long Integer Unique identification number assigned to each building. PARCEL_ID Long Integer Identification number of the parcel on which the building is located. APN Varchar(24) Tax assessing parcel number of the parcel on which the building is located. CITY_ID Integer SEMCOG identification number of the municipality, or for Detroit, master plan neighborhood, in which the building is located. BUILD_TYPE Integer Building type. Please see section B.3 for a detailed description of the types. RES_SQFT Long Integer Square footage devoted to residential use. NONRES_SQFT Long Integer Square footage devoted to nonresidential activity. YEAR_BUILT Integer Year structure was built. A value of 0 indicates the year built is unknown. DEMOLISHED Date Date structure was demolished. STORIES Float(5.2) Number of stories. For single-family residential this number is expressed in quarter fractions from 1 to 3 stories: 1.00, 1.25, 1.50, etc. MEDIAN_HGT Integer Median height of the building from LiDAR surveys, NULL if unknown. HOUSING_UNITS Integer Number of residential housing units in the building. GQCAP Integer Maximum number of group quarters residents, if any. SOURCE Varchar(10) Source of footprint polygon: NEARMAP, OAKLAND, SANBORN, SEMCOG or AUTOMATIC. ADDRESS Varchar(100) Street address of the building. ZIPCODE Varchar(5) USPS postal code for the building address. REF_NAME Varchar(40) Owner or business name of the building, if known. CITY_ID Please refer to the SEMCOG CITY_ID Code List for a list identifying the code for each municipality AND City of Detroit master plan neighborhood. RES_SQFT and NONRES_SQFT Square footage evenly divisible by 100 is an estimate, based on size and/or type of building, where the true value is unknown. SOURCE Footprints from OAKLAND County are derived from 2016 EagleView imagery. Footprints from SEMCOG are edits of shapes from another source. AUTOMATIC footprints are those created by algorithm to represent mobile homes in manufactured housing parks. ADDRESS Buildings with addresses on multiple streets will have each street address separated by the " , " symbol within the field. B.3 Building Types Each building footprint is assigned one of 26 building types to represent how the structure is currently being used. The overwhelming majority of buildings (86.9%) are single-family residential. Nonresidential Types The 22 nonresidential building types are based on the 2017 North American Industrial Classification System (NAICS), which classifies establishments based on economic activity. Each of the building types represent one or more 3-digit NAICS sector groupings, except for five special building types that do not fit well within this system. These special types (movie theaters, libraries, dormitories, funeral services, and parking garages) have land use AND/OR trip generation characteristics that differ substantially from other types of activity in their respective NAICS sector and are therefore classified individually. More information on NAICS, including descriptions of the economic activity sectors, can be found at the Census Bureau's NAICS web site . Residential Types The four residential building types are based on a combination of units in structure, and ownership. Single-Family Housing are homes and site condominiums that contain one housing unit. Most are owned individually, but there are instances of groups of homes owned by a housing commission for rent. Traditional duplexes where each unit is owned by the same entity are also classified as single-family housing. Attached Condo Housing are buildings which contain two or more housing units, each of which shares one or more walls with an adjoining unit and can be independently owned. Multi-Family Apartment buildings contain three or more units, all of which are owned by a single entity and intended as rental units. Mobile Homes are pre-manufactured housing located primarily in manufactured housing parks. Building Type Assignments Buildings are classified primarily on the economic sector of the property owner. Therefore, each building on a site will typically have the same building type assigned. For example, all buildings at an automotive plant will be classified as Manufacturing, even though some small buildings might be typically used as storage. Government owned utility buildings will usually be classified as Utility buildings rather than Governmental. While not ideal for every purpose, it would not be feasible to attempt to uniquely classify nearly two million individual structures, and this method corresponds better to the use of buildings in developing parcel based land use. A description of SEMCOG building types, including the relevant NAICS codes for the type, are found in Table B-2. The RGB color values match SEMCOG's layer symbology for building types. Table B-2 Building Types BUILD TYPE DESCRIPTION NAICS SECTORS RGB 11 Educational 611 190-232-255 13 Religious and Civic 813 0-132-168 14 Governmental 921-928 0-76-115 21 Retail Building 441-454, 811-812 255-190-190 23 Office Building 511-551, 561 255-0-0 31 Manufacturing 311-339 194-158-215 32 Wholesale Trade 423-425 170-102-205 33 Warehouse and Storage 493 112-68-137 41 Transportation and Utility 221, 481-488, 562 204-204-204 42 Delivery Services 491-492 156-156-156 51 Health and Social Services 621, 624 214-157-188 52 Hospital 622 245-122-182 53 Residential Care Facility 623 137-68-101 61 Leisure Activity 711-713 137-205-102 63 Hotel and Motel 721 209-255-115 65 Eating and Drinking 722 85-255-0 71 Agricultural 111-213 255-255-0 81 Single-Family Housing Residential 255-211-127 82 Attached Condo Building Residential 230-152-0 83 Multi-Family Apartment Residential 137-112-68 84 Mobile Home Residential 137-68-68 91 Movie Theater 51213 168-0-0 92 Library 51912 0-197-255 93 Dormitory Quarters 72131 92-137-68 94 Funeral Services 81220 255-127-127 95 Parking Garage 81293 78-78-78
- Creator
- Southeast Michigan Council of Governments
- Publisher
- SEMCOG, Southeast Michigan Council of Governments
- Temporal Coverage
- 2024
- Date Issued
- 2025-06-13
- Rights
- By using this data, you agree to the SEMCOG Copyright License Agreement. The full text can be read here: https://maps-semcog.opendata.arcgis.com/pages/copyright-license-agreement
- Access Rights
- Public
- Format
- ArcGIS FeatureLayer
- Language
- English
- Date Added
- August 10, 2025
- Provenance Statement
- The metadata for this resource was last retrieved from SEMCOG Open Data on 2025-08-24.
Resource Class
Resource Type
Theme
Place
Local Collection
Cite and Reference
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Citation
Southeast Michigan Council of Governments (2025). Building Footprints, 2024 [Michigan]. SEMCOG, Southeast Michigan Council of Governments. https://maps-semcog.opendata.arcgis.com/datasets/SEMCOG::building-footprints-2024 (web service) -
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