Energy Performance Certificate
FLAT 12A, MARLBOROUGH, 61 WALTON STREET, SW3 2JU
Energy rating
Current: 40 E | Potential: 78 C
Environmental impact (CO₂)
Current: 80
| Potential: 84
| Field | Value |
|---|---|
| LMK KEY | 0360-2804-6040-2526-6345 |
| ADDRESS1 | FLAT 12A |
| ADDRESS2 | MARLBOROUGH |
| ADDRESS3 | 61 WALTON STREET |
| POSTCODE | SW3 2JU |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | E |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 40 |
| POTENTIAL ENERGY EFFICIENCY | 78 |
| PROPERTY TYPE | Flat |
| BUILT FORM | Not Recorded |
| INSPECTION DATE | 2026-04-24 |
| LOCAL AUTHORITY | E09000020 |
| CONSTITUENCY | E14001310 |
| COUNTY | — |
| LODGEMENT DATE | 2026-04-27 |
| TRANSACTION TYPE | Rental |
| ENVIRONMENT IMPACT CURRENT | 80 |
| ENVIRONMENT IMPACT POTENTIAL | 84 |
| ENERGY CONSUMPTION CURRENT | 235 |
| ENERGY CONSUMPTION POTENTIAL | 127 |
| CO2 EMISSIONS CURRENT | 1.1 |
| CO2 EMISS CURR PER FLOOR AREA | 29 |
| CO2 EMISSIONS POTENTIAL | 0.8 |
| LIGHTING COST CURRENT | 53 |
| LIGHTING COST POTENTIAL | 53 |
| HEATING COST CURRENT | 1169 |
| HEATING COST POTENTIAL | 281 |
| HOT WATER COST CURRENT | 152 |
| HOT WATER COST POTENTIAL | 127 |
| TOTAL FLOOR AREA | 37 |
| ENERGY TARIFF | Unknown |
| MAINS GAS FLAG | Y |
| FLOOR LEVEL | 3 |
| FLAT TOP STOREY | Y |
| FLAT STOREY COUNT | 1 |
| MAIN HEATING CONTROLS | Programmer and appliance thermostats |
| MULTI GLAZE PROPORTION | 81 |
| GLAZED TYPE | — |
| GLAZED AREA | — |
| EXTENSION COUNT | 1 |
| NUMBER HABITABLE ROOMS | 2 |
| NUMBER HEATED ROOMS | 2 |
| LOW ENERGY LIGHTING | 58 |
| NUMBER OPEN FIREPLACES | — |
| HOTWATER DESCRIPTION | From main system |
| 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 | Mostly double glazing |
| WINDOWS ENERGY EFF | Poor |
| WINDOWS ENV EFF | Poor |
| WALLS DESCRIPTION | Solid brick, as built, no insulation (assumed) |
| WALLS ENERGY EFF | Poor |
| WALLS ENV EFF | Poor |
| SECONDHEAT DESCRIPTION | None |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Flat, no insulation |
| ROOF ENERGY EFF | Very Poor |
| ROOF ENV EFF | Very Poor |
| MAINHEAT DESCRIPTION | Room heaters, electric |
| MAINHEAT ENERGY EFF | Very Poor |
| MAINHEAT ENV EFF | Very Good |
| MAINHEATCONT DESCRIPTION | Programmer and appliance thermostats |
| MAINHEATC ENERGY EFF | Good |
| MAINHEATC ENV EFF | 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 | 4.66 |
| FLOOR HEIGHT | 2.31 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | FLAT 12A, MARLBOROUGH, 61 WALTON STREET |
| LOCAL AUTHORITY LABEL | Kensington and Chelsea |
| CONSTITUENCY LABEL | Kensington and Bayswater |
| POSTTOWN | LONDON |
| CONSTRUCTION AGE BAND | England and Wales: 1900-1929 |
| LODGEMENT DATETIME | 2026-04-27 14:31:30 |
| TENURE | rented (private) |
| FIXED LIGHTING OUTLETS COUNT | 19 |
| LOW ENERGY FIXED LIGHT COUNT | 11 |
| UPRN | 217100636 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2026.csv |
| COUNTRY | England |
| REGION | E12000007 |
| Address display | — |
| Nation | ew |