Energy Performance Certificate
11 Harts Close, WD23 2BL
Energy rating
Current: 62 D | Potential: 77 C
Environmental impact (CO₂)
Current: 55
| Potential: 71
| Field | Value |
|---|---|
| LMK KEY | 2605-3956-8209-8385-7204 |
| ADDRESS1 | 11 Harts Close |
| ADDRESS2 | — |
| ADDRESS3 | — |
| POSTCODE | WD23 2BL |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | D |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 62 |
| POTENTIAL ENERGY EFFICIENCY | 77 |
| PROPERTY TYPE | House |
| BUILT FORM | Detached |
| INSPECTION DATE | 2025-11-20 |
| LOCAL AUTHORITY | E07000098 |
| CONSTITUENCY | E14001568 |
| COUNTY | — |
| LODGEMENT DATE | 2025-11-25 |
| TRANSACTION TYPE | Marketed sale |
| ENVIRONMENT IMPACT CURRENT | 55 |
| ENVIRONMENT IMPACT POTENTIAL | 71 |
| ENERGY CONSUMPTION CURRENT | 232 |
| ENERGY CONSUMPTION POTENTIAL | 141 |
| CO2 EMISSIONS CURRENT | 5.2 |
| CO2 EMISS CURR PER FLOOR AREA | 43 |
| CO2 EMISSIONS POTENTIAL | 3.3 |
| LIGHTING COST CURRENT | 68 |
| LIGHTING COST POTENTIAL | 68 |
| HEATING COST CURRENT | 1558 |
| HEATING COST POTENTIAL | 985 |
| HOT WATER COST CURRENT | 203 |
| HOT WATER COST POTENTIAL | 204 |
| TOTAL FLOOR AREA | 122 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | Y |
| FLOOR LEVEL | — |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 2 |
| MAIN HEATING CONTROLS | Programmer, room thermostat and TRVs |
| MULTI GLAZE PROPORTION | 92 |
| 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 | Good |
| HOT WATER ENV EFF | Good |
| FLOOR DESCRIPTION | Solid, no insulation (assumed) |
| 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 | Pitched, insulated (assumed) |
| ROOF ENERGY EFF | Average |
| ROOF ENV EFF | Average |
| MAINHEAT DESCRIPTION | Boiler and radiators, mains gas |
| MAINHEAT ENERGY EFF | Good |
| MAINHEAT ENV EFF | Good |
| MAINHEATCONT DESCRIPTION | Programmer, room thermostat and TRVs |
| MAINHEATC ENERGY EFF | Good |
| MAINHEATC ENV EFF | Good |
| LIGHTING DESCRIPTION | Excellent lighting efficiency |
| LIGHTING ENERGY EFF | Very Good |
| LIGHTING ENV EFF | Very Good |
| MAIN FUEL | mains gas (not community) |
| WIND TURBINE COUNT | 0 |
| HEAT LOSS CORRIDOR | — |
| UNHEATED CORRIDOR LENGTH | — |
| FLOOR HEIGHT | 2.41 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | 11 Harts Close |
| LOCAL AUTHORITY LABEL | Hertsmere |
| CONSTITUENCY LABEL | Watford |
| POSTTOWN | BUSHEY |
| CONSTRUCTION AGE BAND | England and Wales: 1930-1949 |
| LODGEMENT DATETIME | 2025-11-25 10:07:00 |
| TENURE | owner-occupied |
| FIXED LIGHTING OUTLETS COUNT | 13 |
| LOW ENERGY FIXED LIGHT COUNT | 13 |
| UPRN | 10013019896 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2025.csv |
| COUNTRY | England |
| REGION | E12000006 |
| Address display | — |
| Nation | ew |