BiB property level built environment and indoor building quality
Table ID: BiB_Geographic.bib_geog_built_env_indoor_qual
| Entity type | Variables | Entities | Updated | Related tables |
|---|---|---|---|---|
| Property | 39 | 32008 | 2023-05-17 | NA |
Describes the immediate built environment of a participant’s address and indoor qualities of a participant’s home. Built environment (be) variables measure the geometry of the building and block containing the participants address. Indoor qualities (iq) variables use Energy Performance Certificate (EPC) data to measure the property’s energy use/efficiency and to describe the internal layout and features of the property.
Usage instructions: To link to BiB participants, use the id column to link to the property_id variable in bib_geog_person.
Further information: Created by Kimon Krenz, on behalf of Born in Bradford. Please reference Krenz et al. (2023) when using this data, where more detailed methodological information can be found regarding the construction of these variables.
| variable | label | value_type | summary |
|---|---|---|---|
| iq_2021_inspection_date | The date that inspection was actually carried out by energy assessor The date that the inspection was actually carried out by the energy assessor. |
date | from 2008-07-28 to 2021-12-31 Complete: 21469 (67.07%) |
| iq_2021_construction_age_band | Age band when building part constructed Age band when building part constructed. England & Wales only. One of: before 1900; 1900-1929; 1930-1949; 1950-1966; 1967-1975; 1976-1982; 1983-1990; 1991-1995; 1996-2002; 2003-2006; 2007-2011; 2012 onwards. |
text | 13 unique values 21469 non-missing values 4 to 31 characters |
| iq_2021_built_form | The building type of address The building type of the property, e.g., Detached, Semi-Detached, Terrace, etc..Together with the Property Type, the Build Form produces a structured description of the property. |
text | 7 unique values 21469 non-missing values 8 to 20 characters |
| iq_2021_property_type | The property type of address Describes the type of property such as House, Flat, Maisonette etc. This is the type differentiator for dwellings. |
text | 4 unique values 21469 non-missing values 4 to 10 characters |
| iq_2021_floor_level | Floor level relative to lowest level of property (0 for ground floor) Floor level relative to the lowest level of the property (0 for ground floor). If there is a basement, the basement is level 0 and the other floors are from 1 upwards. Measure only availabe for flats and maisonettes. |
text | 31 unique values 21469 non-missing values 2 to 16 characters |
| iq_2021_flat_storey_count | The number of storeys in apartment block. The number of storeys in the apartment block. |
decimal | mean (sd) 3.43 (2.46) min < median < max 1.00 < 3.00 < 15.00 Complete: 453 (1.42%) |
| iq_2021_flat_top_storey | Whether flat is on top storey. Measure availabe for flats only Whether the flat is on the top storey. Measure availabe for flats only. |
text | 3 unique values 21469 non-missing values 1 to 16 characters |
| iq_2021_total_floor_area | Total m2 of all enclosed spaces measured to internal face of external walls The total useful floor area in square meter is the total of all enclosed spaces measured to the internal face of the external walls, i.e., the gross floor area as measured in accordance with the guidance issued from time to time by the Royal Institute of Chartered Surveyors or by a body replacing that institution. |
decimal | mean (sd) 98.70 (53.32) min < median < max 0.00 < 85.00 < 2846.00 Complete: 21469 (67.07%) |
| iq_2021_floor_height | Mean height of storey in metres. Average height of the storey in metres. |
decimal | mean (sd) 2.48 (0.30) min < median < max 0.00 < 2.44 < 17.56 Complete: 7725 (24.13%) |
| iq_2021_number_heated_rooms | Number of heated rooms in property if > half of habitable rooms are not heated The number of heated rooms in the property if more than half of the habitable rooms are not heated. |
decimal | mean (sd) 4.86 (1.76) min < median < max 0.00 < 5.00 < 24.00 Complete: 20765 (64.87%) |
| iq_2021_number_habitable_rooms | Number of rooms used/intended to be used for sleeping/living Habitable rooms include any living room, sitting room, dining room, bedroom, study and similar; and also a non-separated conservatory. A kitchen/diner having a discrete seating area (with space for a table and four chairs) also counts as a habitable room. A non-separated conservatory adds to the habitable room count if it has an internal quality door between it and the dwelling. Excluded from the room count are any room used solely as a kitchen, utility room, bathroom, cloakroom, en-suite accommodation and similar and any hallway, stairs or landing; and also any room not having a window. |
decimal | mean (sd) 5.00 (1.73) min < median < max 1.00 < 5.00 < 24.00 Complete: 20765 (64.87%) |
| iq_2021_extension_count | The number of extensions added to property The number of extensions added to the property. |
decimal | mean (sd) 0.28 (0.55) min < median < max 0.00 < 0.00 < 4.00 Complete: 20765 (64.87%) |
| iq_2021_glazed_area | Ranged estimate of total glazed area of habitable area Ranged estimate of the total glazed area of the habitable area. |
text | 6 unique values 21469 non-missing values 6 to 22 characters |
| iq_2021_glazed_type | The type of glazing, using Fenestration Rating Council/manufacturer declaration The type of glazing, using British Fenestration Rating Council or manufacturer declaration. |
text | 7 unique values 21469 non-missing values 14 to 45 characters |
| iq_2021_energy_use_current | Current estimated total energy consumption for property inkWh/m² Current estimated total energy consumption for the property in a 12-month period in kilowatt hours per square metre (kWh/m²). |
decimal | mean (sd) 295.83 (108.30) min < median < max -1.00 < 289.00 < 2687.00 Complete: 21469 (67.07%) |
| iq_2021_energy_use_potential | Estimated potential total energy consumption for property inkWh/m² Estimated potential total energy consumption for the property in a 12-month period in kilowatt hours per square metre (kWh/m²). |
decimal | mean (sd) 154.54 (74.98) min < median < max -121.00 < 143.00 < 1877.00 Complete: 21469 (67.07%) |
| iq_2021_hot_water_cost_current | Current estimated annual energy costs for hot water in GBP Current estimated annual energy costs for hot water in GBP. |
decimal | mean (sd) 121.00 (62.93) min < median < max -1.00 < 106.00 < 992.00 Complete: 21469 (67.07%) |
| iq_2021_heating_cost_current | Current estimated annual energy costs for heating property in GBP Current estimated annual energy costs for heating the property in GBP. |
decimal | mean (sd) 951.01 (677.78) min < median < max -1.00 < 770.00 < 25554.00 Complete: 21469 (67.07%) |
| iq_2021_lighting_cost_current | Current estimated annual energy costs for lighting property in GBP Current estimated annual energy costs for lighting the property in GBP. |
decimal | mean (sd) 85.14 (34.60) min < median < max -1.00 < 79.00 < 991.00 Complete: 21469 (67.07%) |
| iq_2021_potential_energy_effcncy | The potential energy efficiency rating of property. The potential energy efficiency rating of the property. |
decimal | mean (sd) 79.03 (8.34) min < median < max 1.00 < 80.00 < 118.00 Complete: 21469 (67.07%) |
| iq_2021_current_energy_effcncy | Energy used for heating, water and lighting multiplied by fuel costs (£m2year) Energy efficiency based on cost of energy, i.e. energy required for space heating, water heating and lighting (in kWh/year) multiplied by fuel costs. (£/m²/year where cost is derived from kWh). |
decimal | mean (sd) 59.82 (12.14) min < median < max 1.00 < 60.00 < 99.00 Complete: 21469 (67.07%) |
| iq_2021_potential_energy_rating | Estimated potential energy rating converted into a linear ‘A to G’ rating Estimated potential energy rating converted into a linear ‘A to G’ rating (where A is the most energy efficient and G is the least energy efficient). |
text | 7 unique values 21469 non-missing values 1 characters |
| iq_2021_current_energy_rating | Current energy rating converted into a linear ‘A to G’ rating Current energy rating converted into a linear ‘A to G’ rating (where A is the most energy efficient and G is the least energy efficient). |
text | 7 unique values 21469 non-missing values 1 characters |
| iq_2021_transaction_type | Type of transaction that triggered assessment Type of transaction that triggered assessment. |
text | 15 unique values 21469 non-missing values 6 to 25 characters |
| iq_2021_tenure_type | Describes tenure type of property Describes the tenure type of the property. |
text | 5 unique values 21469 non-missing values 7 to 16 characters |
| be_2021_footprint_a | Size of building footprint of building containing home address in m2 Size of the building footprint of the building containing the home address in square meters. |
decimal | mean (sd) 69.35 (107.61) min < median < max 4.10 < 48.45 < 2472.34 Complete: 25999 (81.23%) |
| be_2021_height_a | Height of building containing home address in meters Height of the building containing the home address in meters. |
decimal | mean (sd) 6.18 (2.33) min < median < max 0.10 < 5.80 < 39.60 Complete: 25999 (81.23%) |
| be_2021_volume_a | Volume of building containing home address in cubic m2 Volume of the building containing the home address in cubic square meters. |
decimal | mean (sd) 540.66 (2018.56) min < median < max 7.93 < 279.94 < 54363.86 Complete: 25999 (81.23%) |
| be_2021_floorarea_a | Floor area of building containing home address in m2 Floor area of the building containing the home address in square meters. |
decimal | mean (sd) 180.22 (672.85) min < median < max 2.64 < 93.31 < 18121.29 Complete: 25999 (81.23%) |
| be_2021_fsi_c | Floor-space index (FSI) of block containing home address Floor-space index (FSI) of the block containing the home address. |
decimal | mean (sd) 0.39 (0.27) min < median < max 0.00 < 0.31 < 4.15 Complete: 25999 (81.23%) |
| be_2021_gsi_c | Ground-space index (GSI) of block containing home address Ground-space index (GSI) of the block containing the home address. |
decimal | mean (sd) 0.20 (0.09) min < median < max 0.00 < 0.19 < 0.65 Complete: 25999 (81.23%) |
| be_2021_osr_c | Open-space ratio (OSR) of block containing home address Open-space ratio (OSR) of the block containing the home address. |
decimal | mean (sd) 259275.91 (666587.86) min < median < max 259.31 < 42968.77 < 49940355.27 Complete: 25999 (81.23%) |
| be_2021_l_c | Mean building layers of floors (L) of block containing home address Average building layers of floors (L) of the block containing the home address. |
decimal | mean (sd) 1.85 (0.49) min < median < max 0.58 < 1.72 < 7.48 Complete: 25999 (81.23%) |
| be_2021_blockarea_c | Size of block containing home address in m2 Size of the block containing the home address in square meters. |
decimal | mean (sd) 259276.48 (666587.88) min < median < max 259.93 < 42969.41 < 49940356.01 Complete: 25999 (81.23%) |
| be_2021_footprint_c_sum | Sum of all building footprints within block containing home address in m2 Sum of all building footprints within the block containing the home address in square meters. |
decimal | mean (sd) 23645.22 (35879.41) min < median < max 38.44 < 8124.72 < 188852.36 Complete: 25999 (81.23%) |
| be_2021_height_c_mean | Mean height of all buildings within block containing home address in meters Average height of all buildings within the block containing the home address in meters. |
decimal | mean (sd) 5.10 (1.33) min < median < max 1.56 < 4.73 < 23.25 Complete: 25999 (81.23%) |
| be_2021_floorarea_c_sum | Sum of floor area within block containing home address in m2 Sum of floor area within the block containing the home address in square meters. |
decimal | mean (sd) 40026.55 (59895.09) min < median < max 62.79 < 14275.48 < 367760.52 Complete: 25999 (81.23%) |
| be_2021_volume_c_sum | Sum of volume of all buildings within block containing home address in m2 Sum of volume of all buildings within the block containing the home address in square meters. |
decimal | mean (sd) 120079.65 (179685.27) min < median < max 188.36 < 42826.44 < 1103281.56 Complete: 25999 (81.23%) |
| be_2021_volume_density_c | Volume density of block containing home address in m2 Volume density of the block containing the home address in square meters. |
decimal | mean (sd) 1.17 (0.80) min < median < max 0.00 < 0.93 < 12.46 Complete: 25999 (81.23%) |