Energy Performance Certificate
Flat 14, 12 Hertford Street, W1J 7RW
Energy rating
Current: 76 C | Potential: 81 B
Environmental impact (CO₂)
Current: 74
| Potential: 80
| Field | Value |
|---|---|
| LMK KEY | 6300-6005-0622-3193-3553 |
| ADDRESS1 | Flat 14 |
| ADDRESS2 | 12 Hertford Street |
| ADDRESS3 | — |
| POSTCODE | W1J 7RW |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | C |
| POTENTIAL ENERGY RATING | B |
| CURRENT ENERGY EFFICIENCY | 76 |
| POTENTIAL ENERGY EFFICIENCY | 81 |
| PROPERTY TYPE | Flat |
| BUILT FORM | Mid-Terrace |
| INSPECTION DATE | 2025-05-10 |
| LOCAL AUTHORITY | E09000033 |
| CONSTITUENCY | E14001172 |
| COUNTY | — |
| LODGEMENT DATE | 2025-05-17 |
| TRANSACTION TYPE | Rental |
| ENVIRONMENT IMPACT CURRENT | 74 |
| ENVIRONMENT IMPACT POTENTIAL | 80 |
| ENERGY CONSUMPTION CURRENT | 142 |
| ENERGY CONSUMPTION POTENTIAL | 108 |
| CO2 EMISSIONS CURRENT | 2.3 |
| CO2 EMISS CURR PER FLOOR AREA | 25 |
| CO2 EMISSIONS POTENTIAL | 1.7 |
| LIGHTING COST CURRENT | 98 |
| LIGHTING COST POTENTIAL | 99 |
| HEATING COST CURRENT | 460 |
| HEATING COST POTENTIAL | 321 |
| HOT WATER COST CURRENT | 173 |
| HOT WATER COST POTENTIAL | 173 |
| TOTAL FLOOR AREA | 90 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | N |
| FLOOR LEVEL | 3 |
| FLAT TOP STOREY | Y |
| FLAT STOREY COUNT | 1 |
| MAIN HEATING CONTROLS | Charging system linked to use of community heating, TRVs |
| MULTI GLAZE PROPORTION | 60 |
| GLAZED TYPE | triple glazing |
| GLAZED AREA | Normal |
| EXTENSION COUNT | 0 |
| NUMBER HABITABLE ROOMS | 3 |
| NUMBER HEATED ROOMS | 3 |
| LOW ENERGY LIGHTING | 100 |
| NUMBER OPEN FIREPLACES | 0 |
| HOTWATER DESCRIPTION | Community scheme |
| HOT WATER ENERGY EFF | Good |
| HOT WATER ENV EFF | Good |
| FLOOR DESCRIPTION | (another dwelling below) |
| FLOOR ENERGY EFF | N/A |
| FLOOR ENV EFF | N/A |
| WINDOWS DESCRIPTION | Partial triple glazing |
| WINDOWS ENERGY EFF | Average |
| WINDOWS ENV EFF | Average |
| WALLS DESCRIPTION | Timber frame, as built, insulated (assumed) |
| WALLS ENERGY EFF | Good |
| WALLS ENV EFF | Good |
| SECONDHEAT DESCRIPTION | None |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Pitched, 75 mm loft insulation |
| ROOF ENERGY EFF | Average |
| ROOF ENV EFF | Average |
| MAINHEAT DESCRIPTION | Community scheme |
| MAINHEAT ENERGY EFF | Good |
| MAINHEAT ENV EFF | Good |
| MAINHEATCONT DESCRIPTION | Charging system linked to use of community heating, TRVs |
| MAINHEATC ENERGY EFF | Good |
| MAINHEATC ENV EFF | Good |
| LIGHTING DESCRIPTION | Low energy lighting in all fixed outlets |
| LIGHTING ENERGY EFF | Very Good |
| LIGHTING ENV EFF | Very Good |
| MAIN FUEL | mains gas (community) |
| WIND TURBINE COUNT | 0 |
| HEAT LOSS CORRIDOR | unheated corridor |
| UNHEATED CORRIDOR LENGTH | 10.85 |
| FLOOR HEIGHT | 2.39 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | Flat 14, 12 Hertford Street |
| LOCAL AUTHORITY LABEL | Westminster |
| CONSTITUENCY LABEL | Cities of London and Westminster |
| POSTTOWN | LONDON |
| CONSTRUCTION AGE BAND | England and Wales: 1976-1982 |
| LODGEMENT DATETIME | 2025-05-17 06:08:58 |
| TENURE | rented (private) |
| FIXED LIGHTING OUTLETS COUNT | 8 |
| LOW ENERGY FIXED LIGHT COUNT | 8 |
| UPRN | 100022765750 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2025.csv |
| COUNTRY | England |
| REGION | E12000007 |
| Address display | — |
| Nation | ew |