12, Union Street, Swindon occupies a 102 m² plot as recorded by HM Land Registry.

Of the 46 other houses in this postcode, 43 have recorded plot sizes, and this one ranks as the 3rd largest.

12, Union Street, Swindon has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 03 Mar 2021.

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

12, Union Street, Swindon last changed hands on 22nd January 2016, selling for £165,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has risen by 43.4% since January 2016.

• Sold Jan 2016£165,000
• Sold Dec 2009£74,000

Land Registry records and our Estate Agent network show 219 sales of comparable properties within 370 metres of 12, Union Street, Swindon since 2018.

Most recently, 27, Dover Street, Swindon, SN1 3JP, a freehold house, sold at £198,000 on the 19th January 2026.

Read more about house prices in SN1.

• Sold Jan 2026£198,000 | 3 Bed House27, Dover Street, Swindon, SN1 3JP27, Dover Street, Swindon, SN1 3JP
• Sold Nov 2025£225,000 | 3 Bed House10, North Street, Swindon, SN1 3JX10, North Street, Swindon, SN1 3JX
• Sold Nov 2025£165,000 | 3 Bed House15, Stanley Street, Swindon, SN1 3LE15, Stanley Street, Swindon, SN1 3LE
• Sold Sep 2025£217,000 | 3 Bed House1, King William Street, Swindon, SN1 3LB1, King William Street, Swindon, SN1 3LB
• Sold Sep 2025£120,000 | 3 Bed House55, Belle Vue Road, Swindon, SN1 3HN55, Belle Vue Road, Swindon, SN1 3HN
• Sold Sep 2025£230,000 | 3 Bed House38, Union Street, Swindon, SN1 3LD38, Union Street, Swindon, SN1 3LD
• Sold Aug 2025£200,000 | 3 Bed House7, Stanley Street, Swindon, SN1 3LE7, Stanley Street, Swindon, SN1 3LE
• Sold Jul 2025£205,000 | 3 Bed House8, Western Street, Swindon, SN1 3JR8, Western Street, Swindon, SN1 3JR
• Sold Jun 2025£197,270 | 3 Bed House27, Union Street, Swindon, SN1 3LD27, Union Street, Swindon, SN1 3LD
• Sold May 2025£200,000 | 3 Bed House21, Prospect Hill, Swindon, SN1 3JU21, Prospect Hill, Swindon, SN1 3JU
• Sold May 2025£216,000 | 2 Bed House6, Union Street, Swindon, SN1 3LD6, Union Street, Swindon, SN1 3LD
• Sold Nov 2024£216,000 | 3 Bed House1, Stanley Street, Swindon, SN1 3LE1, Stanley Street, Swindon, SN1 3LE
• Sold Nov 2024£180,000 | 3 Bed House15, Prospect Hill, Swindon, SN1 3JU15, Prospect Hill, Swindon, SN1 3JU
• Sold Jun 2024£210,000 | 3 Bed House8, King John Street, Swindon, SN1 3DB8, King John Street, Swindon, SN1 3DB
• Sold Feb 2024£253,000 | 3 Bed House19, Belle Vue Road, Swindon, SN1 3HQ19, Belle Vue Road, Swindon, SN1 3HQ
• Sold Sep 2023£190,000 | 3 Bed House6, Stanley Street, Swindon, SN1 3LE6, Stanley Street, Swindon, SN1 3LE
• Sold Aug 2023£210,000 | 3 Bed House14, Union Street, Swindon, SN1 3LD14, Union Street, Swindon, SN1 3LD
• Sold Jul 2023£239,000 | 3 Bed House22, Prospect Hill, Swindon, SN1 3JU22, Prospect Hill, Swindon, SN1 3JU
• Sold Jul 2023£212,000 | 3 Bed House2, Union Street, Swindon, SN1 3LD2, Union Street, Swindon, SN1 3LD
• Sold Jun 2018£172,500 | 3 Bed House19, Union Street, Swindon, SN1 3LD19, Union Street, Swindon, SN1 3LD

Our analysis of the public data ranks 12, Union Street, Swindon as the 21st largest and the 21st most expensive of the 56 addresses on Union Street, Swindon, SN1.

Against the SN1 postcode district average, it is £24k less expensive than the typical property.

• King William Street Church of England Primary School

  100 m away
• Holy Rood Catholic Primary School

  400 m away
• Lethbridge Primary School

  500 m away

• The Commonweal School

  900 m away
• Lawn Manor Academy

  1.1 km away
• UTC Swindon

  1.3 km away

• Swindon (Wilts)

  |

  1.3 km away
• Kemble

  |

  21.6 km away
• Bedwyn

  |

  23.1 km away

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