Energy Performance Certificate
14 William Street, Treherbert, CF42 5LW
Energy rating
Current: 67 D | Potential: 73 C
Environmental impact (CO₂)
Current: 75
| Potential: 83
| Field | Value |
|---|---|
| LMK KEY | 9300-2323-9590-2995-1611 |
| ADDRESS1 | 14 William Street |
| ADDRESS2 | Treherbert |
| ADDRESS3 | — |
| POSTCODE | CF42 5LW |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | D |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 67 |
| POTENTIAL ENERGY EFFICIENCY | 73 |
| PROPERTY TYPE | Flat |
| BUILT FORM | Not Recorded |
| INSPECTION DATE | 2025-11-17 |
| LOCAL AUTHORITY | W06000016 |
| CONSTITUENCY | W07000107 |
| COUNTY | — |
| LODGEMENT DATE | 2025-11-25 |
| TRANSACTION TYPE | Rental |
| ENVIRONMENT IMPACT CURRENT | 75 |
| ENVIRONMENT IMPACT POTENTIAL | 83 |
| ENERGY CONSUMPTION CURRENT | 280 |
| ENERGY CONSUMPTION POTENTIAL | 196 |
| CO2 EMISSIONS CURRENT | 1.9 |
| CO2 EMISS CURR PER FLOOR AREA | 49 |
| CO2 EMISSIONS POTENTIAL | 1.3 |
| LIGHTING COST CURRENT | 40 |
| LIGHTING COST POTENTIAL | 40 |
| HEATING COST CURRENT | 599 |
| HEATING COST POTENTIAL | 415 |
| HOT WATER COST CURRENT | 246 |
| HOT WATER COST POTENTIAL | 247 |
| TOTAL FLOOR AREA | 38 |
| ENERGY TARIFF | dual |
| 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 | 83 |
| 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 | Fully double glazed |
| WINDOWS ENERGY EFF | Poor |
| WINDOWS ENV EFF | Poor |
| WALLS DESCRIPTION | Cavity wall, 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 | (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 | Below average lighting efficiency |
| LIGHTING ENERGY EFF | Average |
| LIGHTING ENV EFF | Average |
| MAIN FUEL | mains gas (not community) |
| WIND TURBINE COUNT | 0 |
| HEAT LOSS CORRIDOR | unheated corridor |
| UNHEATED CORRIDOR LENGTH | 8.8 |
| FLOOR HEIGHT | 2.4 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | 14 William Street, Treherbert |
| LOCAL AUTHORITY LABEL | Rhondda Cynon Taf |
| CONSTITUENCY LABEL | Rhondda and Ogmore |
| POSTTOWN | TREORCHY |
| CONSTRUCTION AGE BAND | England and Wales: 1950-1966 |
| LODGEMENT DATETIME | 2025-11-25 15:04:09 |
| TENURE | rented (social) |
| FIXED LIGHTING OUTLETS COUNT | 6 |
| LOW ENERGY FIXED LIGHT COUNT | 5 |
| UPRN | 200003758596 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2025.csv |
| COUNTRY | Wales |
| REGION | W99999999 |
| Address display | — |
| Nation | ew |