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.
A unique identifier for the geographic feature.
Land Use Summary (L1)
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)
Second-level land use category, which includes summary classifications such as Single-family and Multifamily.
Land Use Category (L3)
Most detailed land use category, which corresponds to specific land uses such as Single-family detached.
Land Use Type (L4) (or Built Form Type)
Building Type or Place Type of the canvas geometry.
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.
Density of roadway intersections per square mile, measured over a buffered area of the canvas geometry.
Gross area of the canvas geometry.
Residential population associated with occupied dwelling units. This excludes people residing in group quarters.
Households, equivalent to occupied dwelling units.
Dwelling units, including occupied and unoccupied units.
All Detached Single-Family Dwelling Units
Total detached single family homes.
Large Lot Detached Single-Family Dwelling Units
Detached single family homes on lots larger than 5,500 square feet.
Small Lot Detached Single-Family Dwelling Units
Detached single family homes on lots smaller than 5,500 square feet.
Attached Single-Family Dwelling Units (Townhomes)
Attached single family homes, including townhomes, rowhouses, and other units that share walls but are not stacked vertically.
All Multifamily Dwelling Units
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
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
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
Total jobs across all employment categories.
All Retail Employment
The Retail category includes all retail services, other services, restaurant, accommodation, and arts and entertainment employment.
All Office Employment
The Office category includes all office services and medical services employment.
All Public Employment
The Public category includes all public administration and education employment.
All Industrial Employment
The Industrial category includes all utilities, construction, manufacturing, wholesale, and transportation & warehousing employment.
All Agriculture Employment
The Agriculture category includes all agriculture and extraction sector employment.
The Military category includes employment in the military sector.
Retail Services Employment
The Retail Services category, a subsector of Retail, includes retail trade employment.
The Restaurant category, a subsector of Retail, includes restaurant and other food service employment.
The Accommodation category, a subsector of Retail, includes facilities such as hotels and motels.
Arts & Entertainment Employment
The Arts/Entertainment category, a subsector of Retail, includes arts, entertainment, and recreation employment.
Other Retail Employment
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
The Office Services category, a subsector of Office, includes information, finance, and professional and business services employment.
Public Administration Employment
The Public Administration category, a subsector of Public, includes public employment.
The Education category, a subsector of Public, includes primary, secondary, and higher education services employment.
Medical Services Employment
The Medical Services category, a subsector of Office, includes health care employment.
The Manufacturing category, a subsector of Industrial, includes employment in the manufacturing sector.
The Wholesale category, a subsector of Industrial, includes wholesale retail employment.
The Transport/Warehousing category, a subsector of Industrial, includes transportation and warehousing employment.
The Utilities category, a subsector of Industrial, includes employment in the utilities sector.
The Construction category, a subsector of Industrial, includes employment associated with construction activities.
The Agriculture category, a subsector of (all) Agriculture, includes agricultural employment.
The Extraction category, a subsector of Agriculture, includes employment related to extraction.
Small Lot Detached Single-Family Building Area
Building area of small lot detached single-family homes.
Large Lot Detached Single-Family Building Area
Building area of large lot detached single-family homes.
Attached Single-Family Building Area
Building area of attached single-family homes.
Multifamily Building Area
Building area of multifamily homes.
Retail Services Building Area
Building area associated with the retail trade sector.
Restaurants Building Area
Building area associated with the restaurant and food service sector.
Accommodation Building Area
Building area associated with facilities such as hotels and motels.
Arts & Entertainment Building Area
Building area associated with the arts, entertainment, and recreation sectors.
Other Retail Building Area
Building area associated with the retail sector sector outside of trade, restaurant, accommodation, arts/entertainment/recreation, and wholesale employment.
Office Services Building Area
Building area associated with the information, finance, and professional and business services sector.
Public Administration Building Area
Building area associated with the public sector.
Education Building Area
Building area associated with the primary, secondary, and higher education services sector.
Medical Services Building Area
Building area associated with the health care sector.
Transportation/Warehouses Building Area
Building area associated with the transportation and warehousing sectors.
Wholesale Building Area
Building area associated with the wholesale retail sector.
All Detached Single Family Parcel Area
Parcel area with detached single-family use.
Small Lot Detached Single-Family Parcel Area
Parcel area with small lot detached single-family use.
Large Lot Detached Single-Family Parcel Area
Parcel area with large lot detached single-family use.
Attached Single-Family Parcel Area
Parcel area with attached single-family use.
Multifamily Building Parcel Area
Parcel area with multi-family use.
All Retail Parcel Area
Parcel area with retail employment use.
All Office Parcel Area
Parcel area with office employment use.
All Public Parcel Area
Parcel area with public employment use.
All Industrial Parcel Area
Parcel area with industrial employment use.
All Agriculture Parcel Area
Parcel area with agricultural employment use.
All Military Parcel Area
Parcel area with military employment use.
Residential Parcel Area
Total parcel area with residential use.
Employment Parcel Area
Total parcel area with commercial use.
Mixed Use Parcel Area
Total parcel area with mixed use.
No Use Parcel Area
Total parcel area with no use.
Parcel area of canvas geometry.
Area - Development
Parcel area available for development. This is the area that will be "painted" in a scenario.
Right-of-way area within the canvas geometry, including roads and sidewalks.
Residential Irrigated Area
Irrigated outdoor area associated with residential buildings.
Commercial Irrigated Area
Irrigated outdoor area associated with commercial buildings, not including agricultural irrigation.
Population in Group Quarters
People that reside in group quarters, such as dormitories and correctional facilities.
Modified from Original
Indicates with a "yes" or "no" value whether a feature has been painted or gridded in any way.
Indicates with a "yes" or "no" value whether a feature has been created using a gridding operation.
Modified: Type Paint
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
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
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.