---
updatedAt: 2026-06-12T13:55:34.000Z
agentTools:
  projectIndex: https://support.regrid.com/llms.txt
---

# Buildings & Structures

*Structure presence, counts, size, and characteristics.*

Part of the [Regrid Parcel Schemas](https://support.regrid.com/docs/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 ⭐

| Schemas          | Type    | Source | Standardized | API Queryable |
| ---------------- | ------- | ------ | ------------ | ------------- |
| **Premium only** | integer | Regrid | Yes          | **Yes**       |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).
**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

| Schemas            | Type    | Source                 | Standardized | API Queryable |
| ------------------ | ------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | boolean | Authoritative (County) | No           | **Yes**       |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

*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

| Schemas          | Type    | Source | Standardized | API Queryable |
| ---------------- | ------- | ------ | ------------ | ------------- |
| **Premium only** | integer | Regrid | Yes          | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).
**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

| Schemas            | Type    | Source                 | Standardized | API Queryable |
| ------------------ | ------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | integer | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

*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

| Schemas            | Type | Source                 | Standardized | API Queryable |
| ------------------ | ---- | ---------------------- | ------------ | ------------- |
| Premium & Standard | text | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

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

### `yearbuilt` — Structure Year Built

| Schemas            | Type    | Source                 | Standardized | API Queryable |
| ------------------ | ------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | integer | Authoritative (County) | Yes          | **Yes**       |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

*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

| Schemas            | Type    | Source                 | Standardized | API Queryable |
| ------------------ | ------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | integer | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

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

### `numstories` — Number of Stories

| Schemas            | Type             | Source                 | Standardized | API Queryable |
| ------------------ | ---------------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | double precision | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

*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 ⭐

| Schemas          | Type    | Source | Standardized | API Queryable |
| ---------------- | ------- | ------ | ------------ | ------------- |
| **Premium only** | integer | Regrid | Yes          | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).
**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

| Schemas            | Type    | Source                 | Standardized | API Queryable |
| ------------------ | ------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | integer | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

*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

| Schemas            | Type    | Source                 | Standardized | API Queryable |
| ------------------ | ------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | integer | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

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

### `num_bath` — Number of Baths

| Schemas            | Type             | Source                 | Standardized | API Queryable |
| ------------------ | ---------------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | double precision | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

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

### `num_bath_partial` — Number of Partial Baths

| Schemas            | Type             | Source                 | Standardized | API Queryable |
| ------------------ | ---------------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | double precision | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

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

### `numrooms` — Number of Rooms

| Schemas            | Type             | Source                 | Standardized | API Queryable |
| ------------------ | ---------------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | double precision | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

*Also known as: number of rooms, room count (field aliases: rooms, room\_count, total\_rooms)*

### `structstyle` — Structure Style

| Schemas            | Type | Source                 | Standardized | API Queryable |
| ------------------ | ---- | ---------------------- | ------------ | ------------- |
| Premium & Standard | text | Authoritative (County) | No           | —             |

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

**Coverage:** See `structstyle_pct` in the live [Coverage Report CSV](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

*Also known as: building style, architectural style, structure style (field aliases: building\_style, architectural\_style, structure\_style)*

### `recrdareano` — Total Square Footage of Structure Footprints

| Schemas            | Type    | Source                 | Standardized | API Queryable |
| ------------------ | ------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | integer | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

*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

| Schemas            | Type    | Source                 | Standardized | API Queryable |
| ------------------ | ------- | ---------------------- | ------------ | ------------- |
| Premium & Standard | integer | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

*Also known as: number of structures, how many buildings (field aliases: building\_count, structure\_count, num\_buildings)*

### `recrdareatx` — Recorded Area (text)

| Schemas            | Type | Source                 | Standardized | API Queryable |
| ------------------ | ---- | ---------------------- | ------------ | ------------- |
| Premium & Standard | text | Authoritative (County) | No           | —             |

**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](https://docs.google.com/spreadsheets/d/1rvRYv6_ppZlwbmyi2kbzemot6FOEm2EEPdHPyENTQPE/export?format=csv\&gid=1284673582).

*Also known as: recorded area, building area text*