Energy Performance Certificate
42 Derlwyn, Dunvant, SA2 7QE
Energy rating
Current: 49 E | Potential: 70 C
Environmental impact (CO₂)
Current: 55
| Potential: 73
| Field | Value |
|---|---|
| LMK KEY | 0310-2725-9530-2795-7265 |
| ADDRESS1 | 42 Derlwyn |
| ADDRESS2 | Dunvant |
| ADDRESS3 | — |
| POSTCODE | SA2 7QE |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | E |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 49 |
| POTENTIAL ENERGY EFFICIENCY | 70 |
| PROPERTY TYPE | House |
| BUILT FORM | End-Terrace |
| INSPECTION DATE | 2025-07-15 |
| LOCAL AUTHORITY | W06000011 |
| CONSTITUENCY | W07000097 |
| COUNTY | — |
| LODGEMENT DATE | 2025-07-20 |
| TRANSACTION TYPE | Rental |
| ENVIRONMENT IMPACT CURRENT | 55 |
| ENVIRONMENT IMPACT POTENTIAL | 73 |
| ENERGY CONSUMPTION CURRENT | 269 |
| ENERGY CONSUMPTION POTENTIAL | 158 |
| CO2 EMISSIONS CURRENT | 4.0 |
| CO2 EMISS CURR PER FLOOR AREA | 46 |
| CO2 EMISSIONS POTENTIAL | 2.4 |
| LIGHTING COST CURRENT | 56 |
| LIGHTING COST POTENTIAL | 56 |
| HEATING COST CURRENT | 1556 |
| HEATING COST POTENTIAL | 958 |
| HOT WATER COST CURRENT | 348 |
| HOT WATER COST POTENTIAL | 348 |
| TOTAL FLOOR AREA | 87 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | Y |
| FLOOR LEVEL | — |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 3 |
| MAIN HEATING CONTROLS | Programmer and room thermostat |
| MULTI GLAZE PROPORTION | 100 |
| GLAZED TYPE | — |
| GLAZED AREA | — |
| EXTENSION COUNT | 3 |
| NUMBER HABITABLE ROOMS | 4 |
| NUMBER HEATED ROOMS | 4 |
| 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, 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 | Room heaters, electric |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Flat, no insulation |
| ROOF ENERGY EFF | Very Poor |
| ROOF ENV EFF | Very Poor |
| MAINHEAT DESCRIPTION | Boiler and radiators, mains gas |
| MAINHEAT ENERGY EFF | Good |
| MAINHEAT ENV EFF | Good |
| MAINHEATCONT DESCRIPTION | Programmer and room thermostat |
| MAINHEATC ENERGY EFF | Average |
| MAINHEATC ENV EFF | Average |
| LIGHTING DESCRIPTION | Good lighting efficiency |
| LIGHTING ENERGY EFF | Good |
| LIGHTING ENV EFF | Good |
| MAIN FUEL | mains gas (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 | 42 Derlwyn, Dunvant |
| LOCAL AUTHORITY LABEL | Swansea |
| CONSTITUENCY LABEL | Gower |
| POSTTOWN | SWANSEA |
| CONSTRUCTION AGE BAND | England and Wales: 1950-1966 |
| LODGEMENT DATETIME | 2025-07-20 18:12:09 |
| TENURE | rented (private) |
| FIXED LIGHTING OUTLETS COUNT | 11 |
| LOW ENERGY FIXED LIGHT COUNT | 11 |
| UPRN | 100100329409 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2025.csv |
| COUNTRY | Wales |
| REGION | W99999999 |
| Address display | — |
| Nation | ew |