Buildings & Structures

Part of the Regrid Parcel Schemas reference. Label definitions, source/standardization value meanings, and live coverage access are on that parent page. ⭐ marks the recommended field for its job; fields marked API Queryable can filter the /parcels/query endpoint (max 4 fields per query).

ll_bldg_count — Regrid Calculated Building Count ⭐

Description: Total number of buildings on the parcel as calculated by Regrid. Can be used to indicate if a parcel is vacant land or not. Derived from NAIP imagery and refreshed on a 3 year cycle.

Use it for: Number of buildings on a parcel.

Do not use it for: This includes ALL buildings on a parcel, meaning both primary structures and also outbuildings. Do not use to calculate, for example, "number of houses in a neighborhood", because you'll be including things like garages in the count

Related fields: struct, structno, ll_bldg_footprint_sqft
How it's made: Calculated from Matched Buildings product using logic that minimizes false positives
Units: Numeric · Valid range: 0+ · Example: 1
Coverage: See ll_bldg_count_pct in the live Coverage Report CSV.
Matched product: Matched Buildings (separate matched dataset available from Regrid)

Also known as: number of buildings, how many buildings, building count (field aliases: building_count, structure_count)

struct — Structure on Parcel

Description: Number of structures on the parcel per county source.

Use it for: Number of structures the county believes are on the parcel.

Do not use it for: Use ll_bldg_count for a more consistent value nationwide

Related fields: ll_bldg_count ⭐, structno, lbcs_site
Units: Boolean · Valid range: Y/N
Coverage: See struct_pct in the live Coverage Report CSV.

Also known as: is there a building, does the parcel have a structure, vacant land, developed, built on (field aliases: structure_on_parcel, building_on_parcel, improved)

ll_bldg_footprint_sqft — Regrid Calculated Building Footprint Square Feet

Description: Total building footprint in square feet as calculated by Regrid. Derived from NAIP imagery and refreshed on a 3 year cycle.

Use it for: The square footage of the building footprints on a parcel.

Do not use it for: This is NOT the total square footage of the building, it is the square footage of the footprint. For total sqft, see recordareano

Related fields: recrdareano, ll_bldg_count ⭐
How it's made: Calculated from Matched Buildings product using logic that minimizes false positives
Units: Square Feet · Valid range: 0+ · Example: 2649
Coverage: See ll_bldg_footprint_sqft_pct in the live Coverage Report CSV.
Matched product: Matched Buildings (separate matched dataset available from Regrid)

Also known as: building footprint, building size, footprint square footage (field aliases: building_footprint_sqft, footprint_sqft)

area_building — Building Area

Description: Total area square feet of all structures on the property, which can include: Hallways, Common Areas (Gym, Laundry, Mail, Pool, etc) and any other area determined by the specific county assessor.

Use it for: Assessor-provided total building area in square feet across all structures and floors. What is included (common areas, basements, etc.) varies by county - check area_building_definition.

Do not use it for: The ground footprint of buildings - that is ll_bldg_footprint_sqft, calculated by Regrid from imagery. Do not compare across counties without checking area_building_definition.

Related fields: area_building_definition, ll_bldg_footprint_sqft, recrdareano
How it's made: Provided by county assessors where maintained.
Units: Square feet · Example: 2450
Coverage: Provided by many but not all counties; included area types vary. See area_building_pct in the live Coverage Report CSV.

Also known as: building square footage, total building area, building size, how big is the building, finished square feet

area_building_definition — Area Building Definition

Description: Details the area described by the area_building value.

Use it for: Describes what the county's area_building figure includes (e.g. living area vs gross area), enabling correct interpretation and cross-county comparison.

Related fields: area_building
How it's made: Provided alongside area_building.
Coverage: Populated where area_building is provided. See area_building_definition_pct in the live Coverage Report CSV.

Also known as: building area definition, what does building area include

yearbuilt — Structure Year Built

Description: Year structure on parcel was built per county source

Use it for: The county's understanding of when the primary structure on the parcel was built.

Do not use it for: Some counties have been known to list the most recent year a structure was built, not the oldest.

Units: Year · Valid range: Year between 1400 and the present.
Coverage: See yearbuilt_pct in the live Coverage Report CSV.

Also known as: year built, age of building, when was it built, construction year (field aliases: year_built, yr_blt, construction_year, built_year)

year_built_effective_date — Year Built Effective Date

Description: Year built adjusted by the assessor to account for building condition and major structural changes. May be the year of the most recent major addition or renovation.

Use it for: The assessor's adjusted ('effective') year built, reflecting building condition after major renovations or additions. Useful for valuation-oriented building age estimates.

Do not use it for: The original construction year - that is yearbuilt. The effective year is an assessor valuation concept and is often later than actual construction.

Related fields: yearbuilt
How it's made: Provided by county assessors where maintained.
Units: Year · Example: 1995
Coverage: Provided by a minority of counties. See year_built_effective_date_pct in the live Coverage Report CSV.

Also known as: effective year built, renovation year, remodel year, effective age

numstories — Number of Stories

Description: Number of Stories - Can be fractional like 1.5 stories. Per county source.

Do not use it for: Some counties use fractional stories

Units: Double Precision · Valid range: 0+
Coverage: See numstories_pct in the live Coverage Report CSV.

Also known as: number of stories, how many floors, building height in stories (field aliases: stories, floors, story_count)

ll_address_count — Regrid Calculated Total Address Count ⭐

Description: A count of all the addresses we know of existing on a parcel. This includes the primary situs address and all the secondary or unit based addresses in our matched secondary address dataset. It is similar to the county provided 'numunits' in our schema, but calculated by us based on our nationwide address dataset from our address partner.

Use it for: Tells you how many units (apartments, offices, etc) are on this property

Do not use it for: Does not differentiate or reflect land use associate with addresses (e.g. parcels with mixed use structures' ll_address_count includes both residential and commercial addresses associated with the parcel)

Related fields: numunits
How it's made: Computed from Matched Addresses product
Units: Numeric · Valid range: 0+ · Example: 8
Coverage: See ll_address_count_pct in the live Coverage Report CSV.
Matched product: Matched Addresses (separate matched dataset available from Regrid)

Also known as: number of units, how many apartments or offices, multifamily units, addressed units, unit count (field aliases: address_count, unit_address_count, total_address_count)

numunits — Number of Living Units

Description: The number of individual living units, apartments or condominiums on a parcel.

Use it for: The county's count of living units (apartments, condos) on the parcel, where provided. County coverage and definitions vary.

Do not use it for: Use ll_address_count for a more consistent addressed unit count nationwide

Related fields: ll_address_count ⭐
Units: Numeric · Valid range: 0+
Coverage: See numunits_pct in the live Coverage Report CSV.

Also known as: number of units, how many apartments, multifamily, unit count, units on the parcel (field aliases: units, dwelling_units, residential_units, housing_units, apartment_count, condo_units)

num_bedrooms — Number of Bedrooms

Description: The total number of rooms that can be qualified as bedrooms.

Use it for: County-provided bedroom count for the parcel's structures. Qualification standards vary by county.

Related fields: num_bath, numrooms
How it's made: Provided by county assessors where maintained.
Units: Count · Example: 3
Coverage: Provided by many but not all counties. See num_bedrooms_pct in the live Coverage Report CSV.

Also known as: bedrooms, how many bedrooms, bedroom count

num_bath — Number of Baths

Description: The total number of rooms that are utilized as bathrooms. Includes partial bathrooms.

Use it for: County-provided bathroom count for the parcel's structures. Partial baths are typically included, often as fractions (e.g. 2.5).

Do not use it for: A full-bath-only count - partial bathrooms are folded in, and counting conventions vary by county. See num_bath_partial to separate partials.

Related fields: num_bath_partial, num_bedrooms, numrooms
How it's made: Provided by county assessors where maintained.
Units: Count · Example: 2.5
Coverage: Provided by many but not all counties; counting conventions vary. See num_bath_pct in the live Coverage Report CSV.

Also known as: bathrooms, number of baths, how many bathrooms, bath count

num_bath_partial — Number of Partial Baths

Description: The total number of rooms that are utilized as bathrooms and are partial bathrooms by common real estate definition.

Use it for: County-provided count of partial (half) bathrooms.

Related fields: num_bath
How it's made: Provided by county assessors where maintained.
Units: Count · Example: 1
Coverage: Provided by a minority of counties. See num_bath_partial_pct in the live Coverage Report CSV.

Also known as: half baths, partial bathrooms, powder rooms

numrooms — Number of Rooms

Description: The number of rooms in the parcel's primary structure as recorded in county records.

Units: Double Precision · Valid range: 0+ · Example: 2.5
Coverage: See numrooms_pct in the live Coverage Report CSV.

Also known as: number of rooms, room count (field aliases: rooms, room_count, total_rooms)

structstyle — Structure Style

Description: The structure type as maintained by the local source.

Coverage: See structstyle_pct in the live Coverage Report CSV.

Also known as: building style, architectural style, structure style (field aliases: building_style, architectural_style, structure_style)

recrdareano — Total Square Footage of Structure Footprints

Description: This is the Assessor's recorded structure square footage

Use it for: An assessor-provided figure for the total habitable/taxable building area in square feet.

Do not use it for: The building footprint - this is total building area across floors, not ground footprint. For footprint, use ll_bldg_footprint_sqft.

Related fields: ll_bldg_footprint_sqft
Units: Square Feet · Valid range: 0+ · Example: 2432
Coverage: See recrdareano_pct in the live Coverage Report CSV.

Also known as: building square footage, total building area, finished square feet, how big is the building (field aliases: recorded_area, building_sqft, bldg_sqft, improvement_sqft)

structno — Number of Structures on Parcel

Description: Local source's count of number of structures on the parcel.

Use it for: Number of buildings the county believes are on the parcel.

Do not use it for: Use ll_bldg_count for more consistent values nationwide

Related fields: ll_bldg_count ⭐, struct
Units: Numeric · Valid range: 0+
Coverage: See structno_pct in the live Coverage Report CSV.

Also known as: number of structures, how many buildings (field aliases: building_count, structure_count, num_buildings)

recrdareatx — Recorded Area (text)

Description: The assessor's recorded building area preserved as text, exactly as provided.

Use it for: The assessor's recorded building area figure preserved as free text, because counties sometimes include units or annotations. Currently sparsely populated - prefer the numeric fields recrdareano and area_building.

Do not use it for: Numeric analysis - values may contain units or notes. Use recrdareano (numeric) or area_building instead.

Related fields: recrdareano, area_building
How it's made: Provided by county assessors where maintained.
Coverage: Currently sparsely populated nationwide; most counties provide numeric building-area fields instead (recrdareano, area_building). See recrdareatx_pct in the live Coverage Report CSV.

Also known as: recorded area, building area text