12, Sion Road, Twickenham occupies a 136 m² plot as recorded by HM Land Registry.

All 13 other houses in this postcode have recorded plot sizes, and this one ranks as the 4th largest.

12, Sion Road, Twickenham has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 12 Jun 2025.

The property is connected to mains gas and has single glazed windows. It is heated using a boiler and radiators (mains gas).

12, Sion Road, Twickenham last changed hands on 21st October 2025, selling for £2,275,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold 3 times since 1995.

The market for similar properties has risen by 1.5% since October 2025.

• Sold Oct 2025£2,275,000
• Sold May 2013£1,472,500
• Sold Apr 2006£1,040,000

Land Registry records and our Estate Agent network show 30 sales of comparable properties within 570 metres of 12, Sion Road, Twickenham since 2011.

Most recently, 85, Crown Road, Twickenham, TW1 3EX, a freehold house, sold at £1,700,000 on the 28th November 2025.

Read more about house prices in TW1.

• Sold Nov 2025£1,700,000 | 5 Bed House85, Crown Road, Twickenham, TW1 3EX85, Crown Road, Twickenham, TW1 3EX
• Sold Sep 2024£1,875,000 | 5 Bed HouseConiston, Riverside, Twickenham, TW1 3DJConiston, Riverside, Twickenham, TW1 3DJ
• Sold Dec 2023£1,525,000 | 5 Bed House14, Marble Hill Close, Twickenham, TW1 3AY14, Marble Hill Close, Twickenham, TW1 3AY
• Sold Sep 2023£2,250,000 | 5 Bed House7, Sion Road, Twickenham, TW1 3DR7, Sion Road, Twickenham, TW1 3DR
• Sold Sep 2023£1,950,000 | 5 Bed House5, Sion Road, Twickenham, TW1 3DR5, Sion Road, Twickenham, TW1 3DR
• Sold Feb 2023£1,475,000 | 5 Bed House77, Crown Road, Twickenham, TW1 3EX77, Crown Road, Twickenham, TW1 3EX
• Sold Jan 2023£1,950,000 | 5 Bed House197, Richmond Road, Twickenham, TW1 2NJ197, Richmond Road, Twickenham, TW1 2NJ
• Sold Aug 2022£1,755,000 | 5 Bed House1, Marble Hill Close, Twickenham, TW1 3AY1, Marble Hill Close, Twickenham, TW1 3AY
• Sold Oct 2021£2,087,500 | 5 Bed House13, Lebanon Park, Twickenham, TW1 3DF13, Lebanon Park, Twickenham, TW1 3DF
• Sold Jun 2021£1,840,000 | 5 Bed HouseIvy Castle, Eel Pie Island, Twickenham, TW1 3DYIvy Castle, Eel Pie Island, Twickenham, TW1 3DY
• Sold Jun 2021£1,390,000 | 5 Bed House39, Haggard Road, Twickenham, TW1 3AL39, Haggard Road, Twickenham, TW1 3AL
• Sold Jun 2021£1,950,000 | 5 Bed House11, Lebanon Park, Twickenham, TW1 3DF11, Lebanon Park, Twickenham, TW1 3DF
• Sold Jun 2021£1,775,000 | 5 Bed House60, Lebanon Park, Twickenham, TW1 3DQ60, Lebanon Park, Twickenham, TW1 3DQ
• Sold Nov 2018£1,690,000 | 5 Bed House11A, Lebanon Park, Twickenham, TW1 3DF11A, Lebanon Park, Twickenham, TW1 3DF
• Sold Dec 2017£1,500,000 | 5 Bed House2, Victoria Road, Twickenham, TW1 3HW2, Victoria Road, Twickenham, TW1 3HW
• Sold Oct 2017£1,710,000 | 5 Bed HouseWillowbank, Riverside, Twickenham, TW1 3DSWillowbank, Riverside, Twickenham, TW1 3DS
• Sold Mar 2016£1,750,000 | 5 Bed House21, Lebanon Park, Twickenham, TW1 3DF21, Lebanon Park, Twickenham, TW1 3DF
• Sold Sep 2014£1,764,500 | 5 Bed House25, Lebanon Park, Twickenham, TW1 3DF25, Lebanon Park, Twickenham, TW1 3DF
• Sold Apr 2012£1,250,000 | 5 Bed HouseFerry Bank, Riverside, Twickenham, TW1 3DJFerry Bank, Riverside, Twickenham, TW1 3DJ
• Sold May 2011£1,500,000 | 5 Bed House147, Richmond Road, Twickenham, TW1 3AT147, Richmond Road, Twickenham, TW1 3AT

Our analysis of the public data ranks 12, Sion Road, Twickenham as the 3rd largest and the 3rd most expensive of the 51 addresses on Sion Road, Twickenham, TW1.

Against the TW1 postcode district average, it is £955k more expensive than the typical property.

• St Mary's Church of England Primary School

  400 m away
• Orleans Primary School

  600 m away
• St Richard Reynolds Catholic Primary School

  900 m away

• Orleans Park School

  300 m away
• St Richard Reynolds Catholic High School

  800 m away
• Grey Court School

  1.2 km away

• Twickenham

  |

  600 m away
• St Margarets (London)

  |

  900 m away
• Strawberry Hill

  |

  1.5 km away

Environment Agency data suggests this area has a Low risk of flooding.