Energy Performance Certificate
21 Heol Gwermont, Llansaint, SA17 5JA
Energy rating
Current: 57 D | Potential: 79 C
Environmental impact (CO₂)
Current: 53
| Potential: 67
| Field | Value |
|---|---|
| LMK KEY | 7302-9496-4002-1897-0406 |
| ADDRESS1 | 21 Heol Gwermont |
| ADDRESS2 | Llansaint |
| ADDRESS3 | — |
| POSTCODE | SA17 5JA |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | D |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 57 |
| POTENTIAL ENERGY EFFICIENCY | 79 |
| PROPERTY TYPE | House |
| BUILT FORM | Mid-Terrace |
| INSPECTION DATE | 2026-03-17 |
| LOCAL AUTHORITY | W06000010 |
| CONSTITUENCY | W07000098 |
| COUNTY | — |
| LODGEMENT DATE | 2026-03-18 |
| TRANSACTION TYPE | Marketed sale |
| ENVIRONMENT IMPACT CURRENT | 53 |
| ENVIRONMENT IMPACT POTENTIAL | 67 |
| ENERGY CONSUMPTION CURRENT | 237 |
| ENERGY CONSUMPTION POTENTIAL | 154 |
| CO2 EMISSIONS CURRENT | 4.4 |
| CO2 EMISS CURR PER FLOOR AREA | 54 |
| CO2 EMISSIONS POTENTIAL | 3.0 |
| LIGHTING COST CURRENT | 53 |
| LIGHTING COST POTENTIAL | 53 |
| HEATING COST CURRENT | 929 |
| HEATING COST POTENTIAL | 619 |
| HOT WATER COST CURRENT | 374 |
| HOT WATER COST POTENTIAL | 346 |
| TOTAL FLOOR AREA | 81 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | Y |
| FLOOR LEVEL | — |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 2 |
| MAIN HEATING CONTROLS | Room thermostat only |
| 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 | 0 |
| HOTWATER DESCRIPTION | From main system |
| HOT WATER ENERGY EFF | Average |
| HOT WATER ENV EFF | Average |
| 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 | Sandstone, as built, no insulation (assumed) |
| WALLS ENERGY EFF | Poor |
| WALLS ENV EFF | Poor |
| SECONDHEAT DESCRIPTION | Room heaters, wood logs |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Pitched, 225 mm loft insulation |
| ROOF ENERGY EFF | Good |
| ROOF ENV EFF | Good |
| MAINHEAT DESCRIPTION | Boiler and radiators, oil |
| MAINHEAT ENERGY EFF | Average |
| MAINHEAT ENV EFF | Average |
| MAINHEATCONT DESCRIPTION | Room thermostat only |
| MAINHEATC ENERGY EFF | Poor |
| MAINHEATC ENV EFF | Poor |
| LIGHTING DESCRIPTION | Excellent lighting efficiency |
| LIGHTING ENERGY EFF | Very Good |
| LIGHTING ENV EFF | Very Good |
| MAIN FUEL | oil (not community) |
| WIND TURBINE COUNT | 0 |
| HEAT LOSS CORRIDOR | — |
| UNHEATED CORRIDOR LENGTH | — |
| FLOOR HEIGHT | 2.4 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | 21 Heol Gwermont, Llansaint |
| LOCAL AUTHORITY LABEL | Carmarthenshire |
| CONSTITUENCY LABEL | Llanelli |
| POSTTOWN | KIDWELLY |
| CONSTRUCTION AGE BAND | England and Wales: before 1900 |
| LODGEMENT DATETIME | 2026-03-18 14:53:39 |
| TENURE | owner-occupied |
| FIXED LIGHTING OUTLETS COUNT | 13 |
| LOW ENERGY FIXED LIGHT COUNT | 13 |
| UPRN | 10004849742 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2026.csv |
| COUNTRY | Wales |
| REGION | W99999999 |
| Address display | — |
| Nation | ew |