Energy Performance Certificate
5 William Street, SN1 5LB
Energy rating
Current: 66 D | Potential: 79 C
Environmental impact (CO₂)
Current: 63
| Potential: 76
| Field | Value |
|---|---|
| LMK KEY | 0553-3057-9209-3176-7204 |
| ADDRESS1 | 5 William Street |
| ADDRESS2 | — |
| ADDRESS3 | — |
| POSTCODE | SN1 5LB |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | D |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 66 |
| POTENTIAL ENERGY EFFICIENCY | 79 |
| PROPERTY TYPE | House |
| BUILT FORM | Mid-Terrace |
| INSPECTION DATE | 2026-01-05 |
| LOCAL AUTHORITY | E06000030 |
| CONSTITUENCY | E14001537 |
| COUNTY | — |
| LODGEMENT DATE | 2026-01-05 |
| TRANSACTION TYPE | Rental |
| ENVIRONMENT IMPACT CURRENT | 63 |
| ENVIRONMENT IMPACT POTENTIAL | 76 |
| ENERGY CONSUMPTION CURRENT | 216 |
| ENERGY CONSUMPTION POTENTIAL | 137 |
| CO2 EMISSIONS CURRENT | 3.5 |
| CO2 EMISS CURR PER FLOOR AREA | 39 |
| CO2 EMISSIONS POTENTIAL | 2.3 |
| LIGHTING COST CURRENT | 82 |
| LIGHTING COST POTENTIAL | 82 |
| HEATING COST CURRENT | 1063 |
| HEATING COST POTENTIAL | 713 |
| HOT WATER COST CURRENT | 179 |
| HOT WATER COST POTENTIAL | 180 |
| TOTAL FLOOR AREA | 90 |
| ENERGY TARIFF | Single |
| MAINS GAS FLAG | Y |
| FLOOR LEVEL | — |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 2 |
| MAIN HEATING CONTROLS | Programmer, no room thermostat |
| 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 | — |
| HOTWATER DESCRIPTION | From main system |
| HOT WATER ENERGY EFF | Good |
| HOT WATER ENV EFF | Good |
| FLOOR DESCRIPTION | Suspended, 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 | Solid brick, as built, no insulation (assumed) |
| WALLS ENERGY EFF | Poor |
| WALLS ENV EFF | Poor |
| SECONDHEAT DESCRIPTION | None |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Pitched, Unknown 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, no room thermostat |
| MAINHEATC ENERGY EFF | Very Poor |
| MAINHEATC ENV EFF | Very Poor |
| 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 | 2.4 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | 5 William Street |
| LOCAL AUTHORITY LABEL | Swindon |
| CONSTITUENCY LABEL | Swindon South |
| POSTTOWN | SWINDON |
| CONSTRUCTION AGE BAND | England and Wales: before 1900 |
| LODGEMENT DATETIME | 2026-01-05 14:43:22 |
| TENURE | rented (private) |
| FIXED LIGHTING OUTLETS COUNT | 6 |
| LOW ENERGY FIXED LIGHT COUNT | 6 |
| UPRN | 100121164833 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2026.csv |
| COUNTRY | England |
| REGION | E12000009 |
| Address display | — |
| Nation | ew |