Energy Performance Certificate
40 Nant Y Dderwen, Drefach, SA14 7DD
Energy rating
Current: 64 D | Potential: 75 C
Environmental impact (CO₂)
Current: 63
| Potential: 71
| Field | Value |
|---|---|
| LMK KEY | 3400-4789-0622-0595-3153 |
| ADDRESS1 | 40 Nant Y Dderwen |
| ADDRESS2 | Drefach |
| ADDRESS3 | — |
| POSTCODE | SA14 7DD |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | D |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 64 |
| POTENTIAL ENERGY EFFICIENCY | 75 |
| PROPERTY TYPE | Bungalow |
| BUILT FORM | Mid-Terrace |
| INSPECTION DATE | 2025-09-18 |
| LOCAL AUTHORITY | W06000010 |
| CONSTITUENCY | W07000098 |
| COUNTY | — |
| LODGEMENT DATE | 2025-09-22 |
| TRANSACTION TYPE | Rental |
| ENVIRONMENT IMPACT CURRENT | 63 |
| ENVIRONMENT IMPACT POTENTIAL | 71 |
| ENERGY CONSUMPTION CURRENT | 212 |
| ENERGY CONSUMPTION POTENTIAL | 157 |
| CO2 EMISSIONS CURRENT | 2.6 |
| CO2 EMISS CURR PER FLOOR AREA | 49 |
| CO2 EMISSIONS POTENTIAL | 2.0 |
| LIGHTING COST CURRENT | 48 |
| LIGHTING COST POTENTIAL | 48 |
| HEATING COST CURRENT | 497 |
| HEATING COST POTENTIAL | 384 |
| HOT WATER COST CURRENT | 378 |
| HOT WATER COST POTENTIAL | 379 |
| TOTAL FLOOR AREA | 52 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | N |
| FLOOR LEVEL | — |
| 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 | 88 |
| NUMBER OPEN FIREPLACES | — |
| 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 | Average |
| WINDOWS ENV EFF | Average |
| WALLS DESCRIPTION | Cavity wall, filled cavity |
| WALLS ENERGY EFF | Good |
| WALLS ENV EFF | Good |
| SECONDHEAT DESCRIPTION | None |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Pitched, 300 mm loft insulation |
| ROOF ENERGY EFF | Very Good |
| ROOF ENV EFF | Very Good |
| MAINHEAT DESCRIPTION | Boiler and radiators, oil |
| MAINHEAT ENERGY EFF | Average |
| MAINHEAT ENV EFF | Average |
| 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 | oil (not community) |
| WIND TURBINE COUNT | 0 |
| HEAT LOSS CORRIDOR | — |
| UNHEATED CORRIDOR LENGTH | — |
| FLOOR HEIGHT | 2.28 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | 40 Nant Y Dderwen, Drefach |
| LOCAL AUTHORITY LABEL | Carmarthenshire |
| CONSTITUENCY LABEL | Llanelli |
| POSTTOWN | LLANELLI |
| CONSTRUCTION AGE BAND | England and Wales: 1976-1982 |
| LODGEMENT DATETIME | 2025-09-22 07:36:21 |
| TENURE | rented (social) |
| FIXED LIGHTING OUTLETS COUNT | 8 |
| LOW ENERGY FIXED LIGHT COUNT | 7 |
| UPRN | 10009171713 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2025.csv |
| COUNTRY | Wales |
| REGION | W99999999 |
| Address display | — |
| Nation | ew |