Energy Performance Certificate
20 Mary Street, CF46 5LH
Energy rating
Current: 19 G | Potential: 80 C
Environmental impact (CO₂)
Current: 8
| Potential: 75
| Field | Value |
|---|---|
| LMK KEY | 9000-2219-0322-2502-3553 |
| ADDRESS1 | 20 Mary Street |
| ADDRESS2 | — |
| ADDRESS3 | — |
| POSTCODE | CF46 5LH |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | G |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 19 |
| POTENTIAL ENERGY EFFICIENCY | 80 |
| PROPERTY TYPE | House |
| BUILT FORM | Mid-Terrace |
| INSPECTION DATE | 2025-05-09 |
| LOCAL AUTHORITY | W06000024 |
| CONSTITUENCY | W07000099 |
| COUNTY | — |
| LODGEMENT DATE | 2025-05-12 |
| TRANSACTION TYPE | Marketed sale |
| ENVIRONMENT IMPACT CURRENT | 8 |
| ENVIRONMENT IMPACT POTENTIAL | 75 |
| ENERGY CONSUMPTION CURRENT | 657 |
| ENERGY CONSUMPTION POTENTIAL | 172 |
| CO2 EMISSIONS CURRENT | 14 |
| CO2 EMISS CURR PER FLOOR AREA | 170 |
| CO2 EMISSIONS POTENTIAL | 2.5 |
| LIGHTING COST CURRENT | 167 |
| LIGHTING COST POTENTIAL | 84 |
| HEATING COST CURRENT | 2219 |
| HEATING COST POTENTIAL | 882 |
| HOT WATER COST CURRENT | 1321 |
| HOT WATER COST POTENTIAL | 102 |
| TOTAL FLOOR AREA | 80 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | Y |
| FLOOR LEVEL | — |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 3 |
| MAIN HEATING CONTROLS | No thermostatic control of room temperature |
| MULTI GLAZE PROPORTION | 0 |
| GLAZED TYPE | not defined |
| GLAZED AREA | Normal |
| EXTENSION COUNT | 1 |
| NUMBER HABITABLE ROOMS | 5 |
| NUMBER HEATED ROOMS | 4 |
| LOW ENERGY LIGHTING | 0 |
| NUMBER OPEN FIREPLACES | 2 |
| HOTWATER DESCRIPTION | From main system, no cylinder thermostat |
| HOT WATER ENERGY EFF | Very Poor |
| HOT WATER ENV EFF | Very Poor |
| FLOOR DESCRIPTION | Solid, no insulation (assumed) |
| FLOOR ENERGY EFF | N/A |
| FLOOR ENV EFF | N/A |
| WINDOWS DESCRIPTION | Single glazed |
| WINDOWS ENERGY EFF | Very Poor |
| WINDOWS ENV EFF | Very Poor |
| WALLS DESCRIPTION | Granite or whinstone, as built, no insulation (assumed) |
| WALLS ENERGY EFF | Very Poor |
| WALLS ENV EFF | Very Poor |
| SECONDHEAT DESCRIPTION | Portable electric heaters (assumed) |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Pitched, 150 mm loft insulation |
| ROOF ENERGY EFF | Good |
| ROOF ENV EFF | Good |
| MAINHEAT DESCRIPTION | Room heaters, coal, Room heaters, mains gas |
| MAINHEAT ENERGY EFF | Average |
| MAINHEAT ENV EFF | Very Poor |
| MAINHEATCONT DESCRIPTION | No thermostatic control of room temperature |
| MAINHEATC ENERGY EFF | Poor |
| MAINHEATC ENV EFF | Poor |
| LIGHTING DESCRIPTION | No low energy lighting |
| LIGHTING ENERGY EFF | Very Poor |
| LIGHTING ENV EFF | Very Poor |
| MAIN FUEL | house coal (not community) |
| WIND TURBINE COUNT | 0 |
| HEAT LOSS CORRIDOR | — |
| UNHEATED CORRIDOR LENGTH | — |
| FLOOR HEIGHT | 2.45 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | 20 Mary Street |
| LOCAL AUTHORITY LABEL | Merthyr Tydfil |
| CONSTITUENCY LABEL | Merthyr Tydfil and Aberdare |
| POSTTOWN | TREHARRIS |
| CONSTRUCTION AGE BAND | England and Wales: 1900-1929 |
| LODGEMENT DATETIME | 2025-05-12 13:51:22 |
| TENURE | owner-occupied |
| FIXED LIGHTING OUTLETS COUNT | 9 |
| LOW ENERGY FIXED LIGHT COUNT | 0 |
| UPRN | 100100592870 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2025.csv |
| COUNTRY | Wales |
| REGION | W99999999 |
| Address display | — |
| Nation | ew |