Energy Performance Certificate
108 Byewaters, WD18 8WJ
Energy rating
Current: 76 C | Potential: 76 C
Environmental impact (CO₂)
Current: 78
| Potential: 78
| Field | Value |
|---|---|
| LMK KEY | 3300-7255-0122-8607-3663 |
| ADDRESS1 | 108 Byewaters |
| ADDRESS2 | — |
| ADDRESS3 | — |
| POSTCODE | WD18 8WJ |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | C |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 76 |
| POTENTIAL ENERGY EFFICIENCY | 76 |
| PROPERTY TYPE | Flat |
| BUILT FORM | Not Recorded |
| INSPECTION DATE | 2026-06-05 |
| LOCAL AUTHORITY | E07000102 |
| CONSTITUENCY | E14001496 |
| COUNTY | — |
| LODGEMENT DATE | 2026-06-05 |
| TRANSACTION TYPE | Marketed sale |
| ENVIRONMENT IMPACT CURRENT | 78 |
| ENVIRONMENT IMPACT POTENTIAL | 78 |
| ENERGY CONSUMPTION CURRENT | 147 |
| ENERGY CONSUMPTION POTENTIAL | 147 |
| CO2 EMISSIONS CURRENT | 1.6 |
| CO2 EMISS CURR PER FLOOR AREA | 27 |
| CO2 EMISSIONS POTENTIAL | 1.6 |
| LIGHTING COST CURRENT | 43 |
| LIGHTING COST POTENTIAL | 43 |
| HEATING COST CURRENT | 488 |
| HEATING COST POTENTIAL | 488 |
| HOT WATER COST CURRENT | 203 |
| HOT WATER COST POTENTIAL | 203 |
| TOTAL FLOOR AREA | 60 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | Y |
| FLOOR LEVEL | 1 |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 1 |
| MAIN HEATING CONTROLS | Programmer, room thermostat and TRVs |
| MULTI GLAZE PROPORTION | 100 |
| GLAZED TYPE | — |
| GLAZED AREA | — |
| EXTENSION COUNT | 0 |
| NUMBER HABITABLE ROOMS | 3 |
| NUMBER HEATED ROOMS | 3 |
| 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, limited 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 | Cavity wall, as built, insulated (assumed) |
| WALLS ENERGY EFF | Good |
| WALLS ENV EFF | Good |
| SECONDHEAT DESCRIPTION | None |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | (another dwelling above) |
| ROOF ENERGY EFF | N/A |
| ROOF ENV EFF | N/A |
| 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 |
| UNHEATED CORRIDOR LENGTH | 5.57 |
| FLOOR HEIGHT | 2.35 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | 108 Byewaters |
| LOCAL AUTHORITY LABEL | Three Rivers |
| CONSTITUENCY LABEL | South West Hertfordshire |
| POSTTOWN | WATFORD |
| CONSTRUCTION AGE BAND | England and Wales: 1996-2002 |
| LODGEMENT DATETIME | 2026-06-05 15:22:56 |
| TENURE | owner-occupied |
| FIXED LIGHTING OUTLETS COUNT | 11 |
| LOW ENERGY FIXED LIGHT COUNT | 11 |
| UPRN | 200000943181 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2026.csv |
| COUNTRY | England |
| REGION | E12000006 |
| Address display | — |
| Nation | ew |