Energy Performance Certificate
12 The Styles, Harwell, OX11 0HX
Energy rating
Current: 50 E | Potential: 74 C
Environmental impact (CO₂)
Current: 84
| Potential: 93
| Field | Value |
|---|---|
| LMK KEY | 5900-5598-0822-2400-3563 |
| ADDRESS1 | 12 The Styles |
| ADDRESS2 | Harwell |
| ADDRESS3 | — |
| POSTCODE | OX11 0HX |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | E |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 50 |
| POTENTIAL ENERGY EFFICIENCY | 74 |
| PROPERTY TYPE | House |
| BUILT FORM | Semi-Detached |
| INSPECTION DATE | 2026-05-01 |
| LOCAL AUTHORITY | E07000180 |
| CONSTITUENCY | E14001197 |
| COUNTY | — |
| LODGEMENT DATE | 2026-05-02 |
| TRANSACTION TYPE | Marketed sale |
| ENVIRONMENT IMPACT CURRENT | 84 |
| ENVIRONMENT IMPACT POTENTIAL | 93 |
| ENERGY CONSUMPTION CURRENT | 151 |
| ENERGY CONSUMPTION POTENTIAL | 64 |
| CO2 EMISSIONS CURRENT | 2.0 |
| CO2 EMISS CURR PER FLOOR AREA | 15 |
| CO2 EMISSIONS POTENTIAL | 0.9 |
| LIGHTING COST CURRENT | 80 |
| LIGHTING COST POTENTIAL | 80 |
| HEATING COST CURRENT | 2729 |
| HEATING COST POTENTIAL | 1480 |
| HOT WATER COST CURRENT | 496 |
| HOT WATER COST POTENTIAL | 448 |
| TOTAL FLOOR AREA | 136 |
| ENERGY TARIFF | dual |
| MAINS GAS FLAG | N |
| FLOOR LEVEL | — |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 2 |
| MAIN HEATING CONTROLS | Appliance thermostats |
| MULTI GLAZE PROPORTION | 100 |
| GLAZED TYPE | — |
| GLAZED AREA | — |
| EXTENSION COUNT | 3 |
| NUMBER HABITABLE ROOMS | 7 |
| NUMBER HEATED ROOMS | 7 |
| LOW ENERGY LIGHTING | 100 |
| NUMBER OPEN FIREPLACES | — |
| HOTWATER DESCRIPTION | Electric immersion, off-peak |
| HOT WATER ENERGY EFF | Average |
| HOT WATER ENV EFF | Very Good |
| FLOOR DESCRIPTION | Solid, no insulation (assumed) |
| FLOOR ENERGY EFF | N/A |
| FLOOR ENV EFF | N/A |
| WINDOWS DESCRIPTION | Multiple glazing throughout |
| WINDOWS ENERGY EFF | Average |
| WINDOWS ENV EFF | Average |
| WALLS DESCRIPTION | System built, as built, no insulation (assumed) |
| WALLS ENERGY EFF | Very Poor |
| WALLS ENV EFF | Very Poor |
| SECONDHEAT DESCRIPTION | None |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Pitched, 150 mm loft insulation |
| ROOF ENERGY EFF | Good |
| ROOF ENV EFF | Good |
| MAINHEAT DESCRIPTION | Room heaters, electric |
| MAINHEAT ENERGY EFF | Poor |
| MAINHEAT ENV EFF | Very Good |
| MAINHEATCONT DESCRIPTION | Appliance thermostats |
| MAINHEATC ENERGY EFF | Good |
| MAINHEATC ENV EFF | Good |
| LIGHTING DESCRIPTION | Good lighting efficiency |
| LIGHTING ENERGY EFF | Good |
| LIGHTING ENV EFF | Good |
| MAIN FUEL | electricity (not community) |
| WIND TURBINE COUNT | 0 |
| HEAT LOSS CORRIDOR | — |
| UNHEATED CORRIDOR LENGTH | — |
| FLOOR HEIGHT | 2.4 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | 12 The Styles, Harwell |
| LOCAL AUTHORITY LABEL | Vale of White Horse |
| CONSTITUENCY LABEL | Didcot and Wantage |
| POSTTOWN | DIDCOT |
| CONSTRUCTION AGE BAND | England and Wales: 1967-1975 |
| LODGEMENT DATETIME | 2026-05-02 13:29:02 |
| TENURE | owner-occupied |
| FIXED LIGHTING OUTLETS COUNT | 15 |
| LOW ENERGY FIXED LIGHT COUNT | 15 |
| UPRN | 100120915385 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2026.csv |
| COUNTRY | England |
| REGION | E12000008 |
| Address display | — |
| Nation | ew |