Energy Performance Certificate
41 Llwyn Beuno, Bontnewydd, LL55 2UH
Energy rating
Current: 74 C | Potential: 87 B
Environmental impact (CO₂)
Current: 79
| Potential: 84
| Field | Value |
|---|---|
| LMK KEY | 0259-1210-6006-1007-0700 |
| ADDRESS1 | 41 Llwyn Beuno |
| ADDRESS2 | Bontnewydd |
| ADDRESS3 | — |
| POSTCODE | LL55 2UH |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | C |
| POTENTIAL ENERGY RATING | B |
| CURRENT ENERGY EFFICIENCY | 74 |
| POTENTIAL ENERGY EFFICIENCY | 87 |
| PROPERTY TYPE | House |
| BUILT FORM | Mid-Terrace |
| INSPECTION DATE | 2026-05-20 |
| LOCAL AUTHORITY | W06000002 |
| CONSTITUENCY | W07000096 |
| COUNTY | — |
| LODGEMENT DATE | 2026-05-20 |
| TRANSACTION TYPE | Stock condition survey |
| ENVIRONMENT IMPACT CURRENT | 79 |
| ENVIRONMENT IMPACT POTENTIAL | 84 |
| ENERGY CONSUMPTION CURRENT | 151 |
| ENERGY CONSUMPTION POTENTIAL | 115 |
| CO2 EMISSIONS CURRENT | 2.1 |
| CO2 EMISS CURR PER FLOOR AREA | 26 |
| CO2 EMISSIONS POTENTIAL | 1.7 |
| LIGHTING COST CURRENT | 63 |
| LIGHTING COST POTENTIAL | 63 |
| HEATING COST CURRENT | 830 |
| HEATING COST POTENTIAL | 732 |
| HOT WATER COST CURRENT | 192 |
| HOT WATER COST POTENTIAL | 192 |
| TOTAL FLOOR AREA | 81 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | Y |
| FLOOR LEVEL | — |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 2 |
| MAIN HEATING CONTROLS | Programmer, room thermostat and TRVs |
| MULTI GLAZE PROPORTION | 100 |
| GLAZED TYPE | — |
| GLAZED AREA | — |
| EXTENSION COUNT | 0 |
| NUMBER HABITABLE ROOMS | 4 |
| NUMBER HEATED ROOMS | 4 |
| LOW ENERGY LIGHTING | 89 |
| NUMBER OPEN FIREPLACES | 0 |
| 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 | High performance glazing |
| WINDOWS ENERGY EFF | Good |
| WINDOWS ENV EFF | Good |
| WALLS DESCRIPTION | Cavity wall, with external insulation |
| WALLS ENERGY EFF | Good |
| WALLS ENV EFF | Good |
| SECONDHEAT DESCRIPTION | Room heaters, electric |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Pitched, 100 mm loft insulation |
| ROOF ENERGY EFF | Average |
| ROOF ENV EFF | Average |
| 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 LENGTH | — |
| FLOOR HEIGHT | 2.36 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | positive input from loft |
| ADDRESS | 41 Llwyn Beuno, Bontnewydd |
| LOCAL AUTHORITY LABEL | Gwynedd |
| CONSTITUENCY LABEL | Dwyfor Meirionnydd |
| POSTTOWN | CAERNARFON |
| CONSTRUCTION AGE BAND | England and Wales: 1950-1966 |
| LODGEMENT DATETIME | 2026-05-20 10:24:15 |
| TENURE | rented (social) |
| FIXED LIGHTING OUTLETS COUNT | 9 |
| LOW ENERGY FIXED LIGHT COUNT | 8 |
| UPRN | 100100016977 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2026.csv |
| COUNTRY | Wales |
| REGION | W99999999 |
| Address display | — |
| Nation | ew |