Energy Performance Certificate
Knights Barn, Widmere Lane, SL7 3DF
Energy rating
Current: 65 D | Potential: 70 C
Environmental impact (CO₂)
Current: 62
| Potential: 66
| Field | Value |
|---|---|
| LMK KEY | 0390-2748-6640-2906-8015 |
| ADDRESS1 | Knights Barn |
| ADDRESS2 | Widmere Lane |
| ADDRESS3 | — |
| POSTCODE | SL7 3DF |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | D |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 65 |
| POTENTIAL ENERGY EFFICIENCY | 70 |
| PROPERTY TYPE | House |
| BUILT FORM | Semi-Detached |
| INSPECTION DATE | 2026-04-08 |
| LOCAL AUTHORITY | E06000060 |
| CONSTITUENCY | E14001600 |
| COUNTY | — |
| LODGEMENT DATE | 2026-04-14 |
| TRANSACTION TYPE | Marketed sale |
| ENVIRONMENT IMPACT CURRENT | 62 |
| ENVIRONMENT IMPACT POTENTIAL | 66 |
| ENERGY CONSUMPTION CURRENT | 131 |
| ENERGY CONSUMPTION POTENTIAL | 115 |
| CO2 EMISSIONS CURRENT | 9.6 |
| CO2 EMISS CURR PER FLOOR AREA | 29 |
| CO2 EMISSIONS POTENTIAL | 8.5 |
| LIGHTING COST CURRENT | 114 |
| LIGHTING COST POTENTIAL | 114 |
| HEATING COST CURRENT | 2252 |
| HEATING COST POTENTIAL | 2034 |
| HOT WATER COST CURRENT | 272 |
| HOT WATER COST POTENTIAL | 265 |
| TOTAL FLOOR AREA | 326 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | N |
| FLOOR LEVEL | — |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 3 |
| MAIN HEATING CONTROLS | Time and temperature zone control |
| MULTI GLAZE PROPORTION | 100 |
| GLAZED TYPE | — |
| GLAZED AREA | — |
| EXTENSION COUNT | 4 |
| NUMBER HABITABLE ROOMS | 10 |
| NUMBER HEATED ROOMS | 10 |
| LOW ENERGY LIGHTING | 96 |
| NUMBER OPEN FIREPLACES | — |
| HOTWATER DESCRIPTION | From main system |
| HOT WATER ENERGY EFF | Average |
| HOT WATER ENV EFF | Average |
| FLOOR DESCRIPTION | Solid |
| FLOOR ENERGY EFF | N/A |
| FLOOR ENV EFF | N/A |
| WINDOWS DESCRIPTION | Fully double glazed |
| WINDOWS ENERGY EFF | Poor |
| WINDOWS ENV EFF | Poor |
| WALLS DESCRIPTION | Timber frame, as built, insulated (assumed) |
| WALLS ENERGY EFF | Good |
| WALLS ENV EFF | Good |
| SECONDHEAT DESCRIPTION | Room heaters, wood logs |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Pitched, insulated |
| ROOF ENERGY EFF | Average |
| ROOF ENV EFF | Average |
| MAINHEAT DESCRIPTION | Boiler and underfloor heating, oil, Boiler and radiators, oil |
| MAINHEAT ENERGY EFF | Average |
| MAINHEAT ENV EFF | Average |
| MAINHEATCONT DESCRIPTION | Time and temperature zone control |
| MAINHEATC ENERGY EFF | Very Good |
| MAINHEATC ENV EFF | Very Good |
| LIGHTING DESCRIPTION | Good lighting efficiency |
| LIGHTING ENERGY EFF | Good |
| LIGHTING ENV EFF | Good |
| MAIN FUEL | oil (not community) |
| WIND TURBINE COUNT | 0 |
| HEAT LOSS CORRIDOR | — |
| UNHEATED CORRIDOR LENGTH | — |
| FLOOR HEIGHT | 2.1 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | Knights Barn, Widmere Lane |
| LOCAL AUTHORITY LABEL | Buckinghamshire |
| CONSTITUENCY LABEL | Wycombe |
| POSTTOWN | MARLOW |
| CONSTRUCTION AGE BAND | England and Wales: 1991-1995 |
| LODGEMENT DATETIME | 2026-04-14 08:39:43 |
| TENURE | owner-occupied |
| FIXED LIGHTING OUTLETS COUNT | 83 |
| LOW ENERGY FIXED LIGHT COUNT | 80 |
| UPRN | 100081098686 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2026.csv |
| COUNTRY | England |
| REGION | E12000008 |
| Address display | — |
| Nation | ew |