Base Canvas Attributes
Understand the attributes of the Base Canvas.
The Base Canvas includes attributes that describe land use, demographics, and development for each parcel or census block feature. UrbanFootprint's Base Canvas creation process incorporates a number of data sources to populate the attribute columns, including population and housing data from the decennial census and American Community Survey; employment data from the Longitudinal Employer-Household Dynamics (LEHD) program; point of interest data from various sources; and parcel data provided by CoreLogic. (UrbanFootprint can also incorporate local parcel data to create custom parcel-scale canvases.) Detailed information about the process to generate the Base Canvas at the parcel and block resolutions can be found in the Base Parcel Canvas Creation Methodology and Block Canvas Creation Methodology.
For a video overview that explains all the basics of the Base Canvas, you can also watch our webinar: What is the Base Canvas?
The Base Canvas attributes are summarized below.
Attribute Name
Column Key
Description
Geography ID
id
A unique identifier for the geographic feature.
Land Use Summary (L1)
land_use_category_level_1
The highest-level land use category, which includes broad classifications such as Residential, Commercial, and Mixed Use. All lower-level categories nest within higher-level categories.
Land Use Summary (L2)
land_use_category_level_2
Second-level land use category, which includes summary classifications such as Single-family and Multifamily.
Land Use Category (L3)
land_use_category_level_3
Most detailed land use category, which corresponds to specific land uses such as Single-family detached.
Land Use Type (L4) (or Built Form Type)
built_form_key
Building Type or Place Type of the canvas geometry.
Land Development Category
land_development_category
A broad categorization of land use patterns based on intersection density, housing density, and employment density. The categories include Urban, Compact, Standard (suburban), and Rural.
Intersection Density
intersection_density
Density of roadway intersections per square mile, measured over a buffered area of the canvas geometry.
Gross Area
area_gross
Gross area of the canvas geometry.
Population
pop
Residential population associated with occupied dwelling units. This excludes people residing in group quarters.
Households
hh
Households, equivalent to occupied dwelling units.
Dwelling Units
du
Dwelling units, including occupied and unoccupied units.
All Detached Single-Family Dwelling Units
du_detsf
Total detached single family homes.
Large Lot Detached Single-Family Dwelling Units
du_detsf_ll
Detached single family homes on lots larger than 5,500 square feet.
Small Lot Detached Single-Family Dwelling Units
du_detsf_sl
Detached single family homes on lots smaller than 5,500 square feet.
Attached Single-Family Dwelling Units (Townhomes)
du_attsf
Attached single family homes, including townhomes, rowhouses, and other units that share walls but are not stacked vertically.
All Multifamily Dwelling Units
du_mf
Homes in buildings that contain at least two housing units that are adjacent vertically, or horizontally with shared utility systems.
Multi-Family - 2 to 4 Dwelling Units
du_mf2to4
Homes in buildings that contain two to four housing units that are adjacent vertically, or horizontally with shared utility systems. Note that, while this column appropriately represents units in buildings of this size category in the Base Canvas, all new multifamily units are assigned to this category by default in scenarios. Scenario analysis does not differentiate between the multifamily building size categories.
Multi-Family - 5 or More Dwelling Units
du_mf5p
Homes in buildings that contain more than five housing units that are adjacent vertically, or horizontally with shared utility systems. Note that ,while this column appropriately represents units in buildings of this size category in the Base Canvas, all new multifamily units are assigned to the du_mf2to4 category by default in scenarios. Scenario analysis does not differentiate between the multifamily building size categories.
Employment
emp
Total jobs across all employment categories.
All Retail Employment
emp_ret
The Retail category includes all retail services, other services, restaurant, accommodation, and arts and entertainment employment.
All Office Employment
emp_off
The Office category includes all office services and medical services employment.
All Public Employment
emp_pub
The Public category includes all public administration and education employment.
All Industrial Employment
emp_ind
The Industrial category includes all utilities, construction, manufacturing, wholesale, and transportation & warehousing employment.
All Agriculture Employment
emp_ag
The Agriculture category includes all agriculture and extraction sector employment.
Military Employment
emp_military
The Military category includes employment in the military sector.
Retail Services Employment
emp_retail_services
The Retail Services category, a subsector of Retail, includes retail trade employment.
Restaurant Employment
emp_restaurant
The Restaurant category, a subsector of Retail, includes restaurant and other food service employment.
Accommodation Employment
emp_accommodation
The Accommodation category, a subsector of Retail, includes facilities such as hotels and motels.
Arts & Entertainment Employment
emp_arts_entertainment
The Arts/Entertainment category, a subsector of Retail, includes arts, entertainment, and recreation employment.
Other Retail Employment
emp_other_services
The Other Services category, a subsector of Retail, includes retail employment outside of trade, restaurant, accommodation, arts/entertainment/recreation, and wholesale employment.
Office Services Employment
emp_office_services
The Office Services category, a subsector of Office, includes information, finance, and professional and business services employment.
Public Administration Employment
emp_public_admin
The Public Administration category, a subsector of Public, includes public employment.
Education Employment
emp_education
The Education category, a subsector of Public, includes primary, secondary, and higher education services employment.
Medical Services Employment
emp_medical_services
The Medical Services category, a subsector of Office, includes health care employment.
Manufacturing Employment
emp_manufacturing
The Manufacturing category, a subsector of Industrial, includes employment in the manufacturing sector.
Wholesale Employment
emp_wholesale
The Wholesale category, a subsector of Industrial, includes wholesale retail employment.
Transportation/Warehouses Employment
emp_transport_warehousing
The Transport/Warehousing category, a subsector of Industrial, includes transportation and warehousing employment.
Utilities Employment
emp_utilities
The Utilities category, a subsector of Industrial, includes employment in the utilities sector.
Construction Employment
emp_construction
The Construction category, a subsector of Industrial, includes employment associated with construction activities.
Agriculture Employment
emp_agriculture
The Agriculture category, a subsector of (all) Agriculture, includes agricultural employment.
Extraction Employment
emp_extraction
The Extraction category, a subsector of Agriculture, includes employment related to extraction.
Small Lot Detached Single-Family Building Area
bldg_area_detsf_sl
Building area of small lot detached single-family homes.
Large Lot Detached Single-Family Building Area
bldg_area_detsf_ll
Building area of large lot detached single-family homes.
Attached Single-Family Building Area
bldg_area_attsf
Building area of attached single-family homes.
Multifamily Building Area
bldg_area_mf
Building area of multifamily homes.
Retail Services Building Area
bldg_area_retail_services
Building area associated with the retail trade sector.
Restaurants Building Area
bldg_area_restaurant
Building area associated with the restaurant and food service sector.
Accommodation Building Area
bldg_area_accommodation
Building area associated with facilities such as hotels and motels.
Arts & Entertainment Building Area
bldg_area_arts_entertainment
Building area associated with the arts, entertainment, and recreation sectors.
Other Retail Building Area
bldg_area_other_services
Building area associated with the retail sector sector outside of trade, restaurant, accommodation, arts/entertainment/recreation, and wholesale employment.
Office Services Building Area
bldg_area_office_services
Building area associated with the information, finance, and professional and business services sector.
Public Administration Building Area
bldg_area_public_admin
Building area associated with the public sector.
Education Building Area
bldg_area_education
Building area associated with the primary, secondary, and higher education services sector.
Medical Services Building Area
bldg_area_medical_services
Building area associated with the health care sector.
Transportation/Warehouses Building Area
bldg_area_transport_warehousing
Building area associated with the transportation and warehousing sectors.
Wholesale Building Area
bldg_area_wholesale
Building area associated with the wholesale retail sector.
All Detached Single Family Parcel Area
area_parcel_res_detsf
Parcel area with detached single-family use.
Small Lot Detached Single-Family Parcel Area
area_parcel_res_detsf_sl
Parcel area with small lot detached single-family use.
Large Lot Detached Single-Family Parcel Area
area_parcel_res_detsf_ll
Parcel area with large lot detached single-family use.
Attached Single-Family Parcel Area
area_parcel_res_attsf
Parcel area with attached single-family use.
Multifamily Building Parcel Area
area_parcel_res_mf
Parcel area with multi-family use.
All Retail Parcel Area
area_parcel_emp_ret
Parcel area with retail employment use.
All Office Parcel Area
area_parcel_emp_off
Parcel area with office employment use.
All Public Parcel Area
area_parcel_emp_pub
Parcel area with public employment use.
All Industrial Parcel Area
area_parcel_emp_ind
Parcel area with industrial employment use.
All Agriculture Parcel Area
area_parcel_emp_ag
Parcel area with agricultural employment use.
All Military Parcel Area
area_parcel_emp_military
Parcel area with military employment use.
Residential Parcel Area
area_parcel_res
Total parcel area with residential use.
Employment Parcel Area
area_parcel_emp
Total parcel area with commercial use.
Mixed Use Parcel Area
area_parcel_mixed_use
Total parcel area with mixed use.
No Use Parcel Area
area_parcel_no_use
Total parcel area with no use.
Net Area
area_parcel
Parcel area of canvas geometry.
Area - Development
area_dev_condition
Parcel area available for development. This is the area that will be "painted" in a scenario.
Right-of-Way Area
area_row
Right-of-way area within the canvas geometry, including roads and sidewalks.
Residential Irrigated Area
residential_irrigated_area
Irrigated outdoor area associated with residential buildings.
Commercial Irrigated Area
commercial_irrigated_area
Irrigated outdoor area associated with commercial buildings, not including agricultural irrigation.
Population in Group Quarters
pop_groupquarter
People that reside in group quarters, such as dormitories and correctional facilities.
Modified from Original
uf_is_painted
Indicates with a "yes" or "no" value whether a feature has been modified in any way, including gridding, type painting, or attribute painting.
Modified: Gridded
uf_paint_split
Indicates with a "yes" or "no" value whether a feature has been created using a gridding operation.
Modified: Type Paint
uf_paint_built_form
Indicates with a "yes" or "no" value whether a feature has been painted to have a new Building or Place Type name. This can apply whether the feature has been painted by type or attribute, and regardless of whether the base residential and employment values have been modified.
Modified: Employment Attributes
uf_paint_direct_employment
Indicates with a "yes" or "no" value whether a feature has been painted by attribute to set employment values, including jobs and non-residential building area.
Modified: Residential Attributes
uf_paint_direct_residential
Indicates with a "yes" or "no" value whether a feature has been painted by attribute to set residential values, including dwelling units and residential building area.
Last modified 1mo ago
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