Energy Performance Certificate
Flat 54, Sir John Lyon House, 8 High Timber Street, EC4V 3PA
Energy rating
Current: 78 C | Potential: 78 C
Environmental impact (CO₂)
Current: 95
| Potential: 95
| Field | Value |
|---|---|
| LMK KEY | 8635-2121-5500-0251-5226 |
| ADDRESS1 | Flat 54 |
| ADDRESS2 | Sir John Lyon House |
| ADDRESS3 | 8 High Timber Street |
| POSTCODE | EC4V 3PA |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | C |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 78 |
| POTENTIAL ENERGY EFFICIENCY | 78 |
| PROPERTY TYPE | Flat |
| BUILT FORM | Not Recorded |
| INSPECTION DATE | 2025-09-29 |
| LOCAL AUTHORITY | E09000001 |
| CONSTITUENCY | E14001172 |
| COUNTY | — |
| LODGEMENT DATE | 2025-09-29 |
| TRANSACTION TYPE | Rental |
| ENVIRONMENT IMPACT CURRENT | 95 |
| ENVIRONMENT IMPACT POTENTIAL | 95 |
| ENERGY CONSUMPTION CURRENT | 75 |
| ENERGY CONSUMPTION POTENTIAL | 75 |
| CO2 EMISSIONS CURRENT | 0.3 |
| CO2 EMISS CURR PER FLOOR AREA | 7 |
| CO2 EMISSIONS POTENTIAL | 0.3 |
| LIGHTING COST CURRENT | 55 |
| LIGHTING COST POTENTIAL | 55 |
| HEATING COST CURRENT | 71 |
| HEATING COST POTENTIAL | 71 |
| HOT WATER COST CURRENT | 555 |
| HOT WATER COST POTENTIAL | 555 |
| TOTAL FLOOR AREA | 49 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | N |
| FLOOR LEVEL | 2 |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 1 |
| MAIN HEATING CONTROLS | Time and temperature zone control |
| MULTI GLAZE PROPORTION | 100 |
| GLAZED TYPE | — |
| GLAZED AREA | — |
| EXTENSION COUNT | 0 |
| NUMBER HABITABLE ROOMS | 2 |
| NUMBER HEATED ROOMS | 2 |
| LOW ENERGY LIGHTING | 75 |
| NUMBER OPEN FIREPLACES | — |
| HOTWATER DESCRIPTION | Electric immersion, standard tariff |
| HOT WATER ENERGY EFF | Very Poor |
| HOT WATER ENV EFF | Very Good |
| FLOOR DESCRIPTION | (another dwelling below) |
| FLOOR ENERGY EFF | N/A |
| FLOOR ENV EFF | N/A |
| WINDOWS DESCRIPTION | Fully double glazed |
| WINDOWS ENERGY EFF | Average |
| WINDOWS ENV EFF | Average |
| WALLS DESCRIPTION | System built, as built, insulated (assumed) |
| WALLS ENERGY EFF | Good |
| WALLS ENV EFF | Good |
| SECONDHEAT DESCRIPTION | Room heaters, electric |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | (another dwelling above) |
| ROOF ENERGY EFF | N/A |
| ROOF ENV EFF | N/A |
| MAINHEAT DESCRIPTION | Electric underfloor heating |
| MAINHEAT ENERGY EFF | Very Poor |
| MAINHEAT ENV EFF | Very Good |
| MAINHEATCONT DESCRIPTION | Time and temperature zone control |
| MAINHEATC ENERGY EFF | Very Good |
| MAINHEATC ENV EFF | Very Good |
| LIGHTING DESCRIPTION | Below average lighting efficiency |
| LIGHTING ENERGY EFF | Poor |
| LIGHTING ENV EFF | Poor |
| MAIN FUEL | electricity (not community) |
| WIND TURBINE COUNT | 0 |
| HEAT LOSS CORRIDOR | unheated corridor |
| UNHEATED CORRIDOR LENGTH | 1.67 |
| FLOOR HEIGHT | 2.29 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | Flat 54, Sir John Lyon House, 8 High Timber Street |
| LOCAL AUTHORITY LABEL | City of London |
| CONSTITUENCY LABEL | Cities of London and Westminster |
| POSTTOWN | LONDON |
| CONSTRUCTION AGE BAND | England and Wales: 2007-2011 |
| LODGEMENT DATETIME | 2025-09-29 15:59:12 |
| TENURE | rented (private) |
| FIXED LIGHTING OUTLETS COUNT | 12 |
| LOW ENERGY FIXED LIGHT COUNT | 9 |
| UPRN | 95506819 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2025.csv |
| COUNTRY | England |
| REGION | E12000007 |
| Address display | — |
| Nation | ew |