Energy Performance Certificate
9a Onslow Road, SO14 0JD
Energy rating
Current: 69 C | Potential: 69 C
Environmental impact (CO₂)
Current: 91
| Potential: 91
| Field | Value |
|---|---|
| LMK KEY | 1636-4635-9100-0571-1226 |
| ADDRESS1 | 9a Onslow Road |
| ADDRESS2 | — |
| ADDRESS3 | — |
| POSTCODE | SO14 0JD |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | C |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 69 |
| POTENTIAL ENERGY EFFICIENCY | 69 |
| PROPERTY TYPE | Flat |
| BUILT FORM | Mid-Terrace |
| INSPECTION DATE | 2026-05-29 |
| LOCAL AUTHORITY | E06000045 |
| CONSTITUENCY | E14001500 |
| COUNTY | — |
| LODGEMENT DATE | 2026-05-29 |
| TRANSACTION TYPE | New dwelling |
| ENVIRONMENT IMPACT CURRENT | 91 |
| ENVIRONMENT IMPACT POTENTIAL | 91 |
| ENERGY CONSUMPTION CURRENT | 137 |
| ENERGY CONSUMPTION POTENTIAL | 137 |
| CO2 EMISSIONS CURRENT | 0.5 |
| CO2 EMISS CURR PER FLOOR AREA | 12.3 |
| CO2 EMISSIONS POTENTIAL | 0.5 |
| LIGHTING COST CURRENT | 44 |
| LIGHTING COST POTENTIAL | 44 |
| HEATING COST CURRENT | 259 |
| HEATING COST POTENTIAL | 259 |
| HOT WATER COST CURRENT | 311 |
| HOT WATER COST POTENTIAL | 311 |
| TOTAL FLOOR AREA | 38 |
| ENERGY TARIFF | off-peak 7 hour |
| MAINS GAS FLAG | — |
| FLOOR LEVEL | 3 |
| FLAT TOP STOREY | Y |
| FLAT STOREY COUNT | 1 |
| MAIN HEATING CONTROLS | Controls for high heat retention storage heaters |
| MULTI GLAZE PROPORTION | 100 |
| GLAZED TYPE | — |
| GLAZED AREA | — |
| EXTENSION COUNT | — |
| NUMBER HABITABLE ROOMS | — |
| NUMBER HEATED ROOMS | — |
| LOW ENERGY LIGHTING | 100 |
| NUMBER OPEN FIREPLACES | 0 |
| HOTWATER DESCRIPTION | Electric immersion, off-peak |
| HOT WATER ENERGY EFF | Poor |
| HOT WATER ENV EFF | Very Good |
| FLOOR DESCRIPTION | Average thermal transmittance 0.15 W/m²K |
| FLOOR ENERGY EFF | Very Good |
| FLOOR ENV EFF | Very Good |
| WINDOWS DESCRIPTION | High performance glazing |
| WINDOWS ENERGY EFF | Good |
| WINDOWS ENV EFF | Good |
| WALLS DESCRIPTION | Average thermal transmittance 0.25 W/m²K |
| WALLS ENERGY EFF | Very Good |
| WALLS ENV EFF | Very Good |
| SECONDHEAT DESCRIPTION | Room heaters, electric |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Average thermal transmittance 0.11 W/m²K |
| ROOF ENERGY EFF | Very Good |
| ROOF ENV EFF | Very Good |
| MAINHEAT DESCRIPTION | Electric storage heaters |
| MAINHEAT ENERGY EFF | Average |
| MAINHEAT ENV EFF | Very Good |
| MAINHEATCONT DESCRIPTION | Controls for high heat retention storage heaters |
| MAINHEATC ENERGY EFF | Good |
| MAINHEATC ENV EFF | Good |
| LIGHTING DESCRIPTION | Excellent lighting efficiency |
| LIGHTING ENERGY EFF | Very Good |
| LIGHTING ENV EFF | Very Good |
| MAIN FUEL | Electricity: electricity, unspecified tariff |
| WIND TURBINE COUNT | — |
| HEAT LOSS CORRIDOR | — |
| UNHEATED CORRIDOR LENGTH | — |
| FLOOR HEIGHT | 2.4 |
| PHOTO SUPPLY | — |
| SOLAR WATER HEATING FLAG | — |
| MECHANICAL VENTILATION | — |
| ADDRESS | 9a Onslow Road |
| LOCAL AUTHORITY LABEL | Southampton |
| CONSTITUENCY LABEL | Southampton Test |
| POSTTOWN | Southampton |
| CONSTRUCTION AGE BAND | 2025 |
| LODGEMENT DATETIME | 2026-05-29 15:47:46 |
| TENURE | owner-occupied |
| FIXED LIGHTING OUTLETS COUNT | 5 |
| LOW ENERGY FIXED LIGHT COUNT | 5 |
| UPRN | — |
| UPRN SOURCE | — |
| REPORT TYPE | 3 |
| Source file | certificates-2026.csv |
| COUNTRY | England |
| REGION | E12000008 |
| Address display | — |
| Nation | ew |