Energy Performance Certificate
12 Willow Lane, WD18 0JA
Energy rating
Current: 102 A | Potential: 104 A
Environmental impact (CO₂)
Current: 99
| Potential: 100
| Field | Value |
|---|---|
| LMK KEY | 9036-2729-0100-0577-3222 |
| ADDRESS1 | 12 Willow Lane |
| ADDRESS2 | — |
| ADDRESS3 | — |
| POSTCODE | WD18 0JA |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | A |
| POTENTIAL ENERGY RATING | A |
| CURRENT ENERGY EFFICIENCY | 102 |
| POTENTIAL ENERGY EFFICIENCY | 104 |
| PROPERTY TYPE | House |
| BUILT FORM | Mid-Terrace |
| INSPECTION DATE | 2026-01-23 |
| LOCAL AUTHORITY | E07000103 |
| CONSTITUENCY | E14001568 |
| COUNTY | — |
| LODGEMENT DATE | 2026-01-23 |
| TRANSACTION TYPE | Grant scheme |
| ENVIRONMENT IMPACT CURRENT | 99 |
| ENVIRONMENT IMPACT POTENTIAL | 100 |
| ENERGY CONSUMPTION CURRENT | 33 |
| ENERGY CONSUMPTION POTENTIAL | 26 |
| CO2 EMISSIONS CURRENT | 0.0 |
| CO2 EMISS CURR PER FLOOR AREA | -0.4 |
| CO2 EMISSIONS POTENTIAL | -0.1 |
| LIGHTING COST CURRENT | 46 |
| LIGHTING COST POTENTIAL | 46 |
| HEATING COST CURRENT | 555 |
| HEATING COST POTENTIAL | 514 |
| HOT WATER COST CURRENT | 436 |
| HOT WATER COST POTENTIAL | 382 |
| TOTAL FLOOR AREA | 61 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | N |
| FLOOR LEVEL | — |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 2 |
| MAIN HEATING CONTROLS | Programmer, room thermostat and TRVs |
| MULTI GLAZE PROPORTION | 100 |
| GLAZED TYPE | — |
| GLAZED AREA | — |
| EXTENSION COUNT | 1 |
| NUMBER HABITABLE ROOMS | 4 |
| NUMBER HEATED ROOMS | 4 |
| LOW ENERGY LIGHTING | 100 |
| NUMBER OPEN FIREPLACES | — |
| HOTWATER DESCRIPTION | From main system |
| 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 | Fully double glazed |
| WINDOWS ENERGY EFF | Poor |
| WINDOWS ENV EFF | Poor |
| WALLS DESCRIPTION | Solid brick, with external insulation |
| WALLS ENERGY EFF | Good |
| WALLS ENV EFF | Good |
| SECONDHEAT DESCRIPTION | None |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Pitched, 270 mm loft insulation |
| ROOF ENERGY EFF | Very Good |
| ROOF ENV EFF | Very Good |
| MAINHEAT DESCRIPTION | Air source heat pump, radiators, electric |
| MAINHEAT ENERGY EFF | Good |
| MAINHEAT ENV EFF | Very Good |
| MAINHEATCONT DESCRIPTION | Programmer, room thermostat and TRVs |
| 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 | 2.6 |
| PHOTO SUPPLY | — |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | mechanical extract, decentralised (MEV dc) |
| ADDRESS | 12 Willow Lane |
| LOCAL AUTHORITY LABEL | Watford |
| CONSTITUENCY LABEL | Watford |
| POSTTOWN | WATFORD |
| CONSTRUCTION AGE BAND | England and Wales: 1900-1929 |
| LODGEMENT DATETIME | 2026-01-23 15:40:03 |
| TENURE | owner-occupied |
| FIXED LIGHTING OUTLETS COUNT | 12 |
| LOW ENERGY FIXED LIGHT COUNT | 12 |
| UPRN | 100080954550 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2026.csv |
| COUNTRY | England |
| REGION | E12000006 |
| Address display | — |
| Nation | ew |