9, Mainstone, Romsey occupies a 186 m² plot as recorded by HM Land Registry.

All 7 other houses in this postcode have recorded plot sizes, and this one ranks as the 7th largest.

9, Mainstone, Romsey has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 13 May 2021.

The property is connected to mains gas and has partial double glazing. It is heated using a boiler and radiators (mains gas).

9, Mainstone, Romsey last changed hands on 25th July 2014, 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 49.7% since July 2014.

• Sold Jul 2014£165,000
• Sold Feb 2004£195,000

Land Registry records and our Estate Agent network show 158 sales of comparable properties within 1.1 kilometres of 9, Mainstone, Romsey since 2014.

Most recently, 60, Riverside Gardens, Romsey, SO51 8HN, a leasehold house, sold at £360,000 on the 21st November 2025.

Read more about house prices in SO51.

• Sold Nov 2025£360,000 | 3 Bed House60, Riverside Gardens, Romsey, SO51 8HN60, Riverside Gardens, Romsey, SO51 8HN
• Sold Aug 2025£425,000 | 3 Bed House77, Middlebridge Street, Romsey, SO51 8HJ77, Middlebridge Street, Romsey, SO51 8HJ
• Sold Jul 2025£395,000 | 3 Bed House35, Middlebridge Street, Romsey, SO51 8HJ35, Middlebridge Street, Romsey, SO51 8HJ
• Sold Jul 2025£500,000 | 3 Bed House17, Mainstone, Romsey, SO51 8HG17, Mainstone, Romsey, SO51 8HG
• Sold Jun 2025£447,000 | 3 Bed House49, Middlebridge Street, Romsey, SO51 8HJ49, Middlebridge Street, Romsey, SO51 8HJ
• Sold Mar 2025£365,000 | 3 Bed House24, Riverside Gardens, Romsey, SO51 8HN24, Riverside Gardens, Romsey, SO51 8HN
• Sold Dec 2023£331,000 | 3 Bed House173, Middlebridge Street, Romsey, SO51 8HH173, Middlebridge Street, Romsey, SO51 8HH
• Sold Nov 2023£480,000 | 3 Bed House33, Rivermead Close, Romsey, SO51 8HQ33, Rivermead Close, Romsey, SO51 8HQ
• Sold Sep 2023£380,000 | 3 Bed House32, Riverside Gardens, Romsey, SO51 8HN32, Riverside Gardens, Romsey, SO51 8HN
• Sold Aug 2023£435,000 | 3 Bed House25, Middlebridge Street, Romsey, SO51 8HJ25, Middlebridge Street, Romsey, SO51 8HJ
• Sold Feb 2023£393,500 | 3 Bed House62, Middlebridge Street, Romsey, SO51 8HL62, Middlebridge Street, Romsey, SO51 8HL
• Sold Dec 2022£402,000 | 3 Bed House6, Riverside Gardens, Romsey, SO51 8HN6, Riverside Gardens, Romsey, SO51 8HN
• Sold Dec 2020£350,000 | 3 Bed House101, Middlebridge Street, Romsey, SO51 8HJ101, Middlebridge Street, Romsey, SO51 8HJ
• Sold Jul 2020£395,000 | 3 Bed House51, Riverside Gardens, Romsey, SO51 8HN51, Riverside Gardens, Romsey, SO51 8HN
• Sold Jul 2020£370,000 | 3 Bed House67, Middlebridge Street, Romsey, SO51 8HJ67, Middlebridge Street, Romsey, SO51 8HJ
• Sold May 2020£400,000 | 3 Bed House127, Middlebridge Street, Romsey, SO51 8HH127, Middlebridge Street, Romsey, SO51 8HH
• Sold Jan 2020£315,000 | 3 Bed House56, Riverside Gardens, Romsey, SO51 8HN56, Riverside Gardens, Romsey, SO51 8HN
• Sold May 2019£325,000 | 3 Bed House151, Middlebridge Street, Romsey, SO51 8HH151, Middlebridge Street, Romsey, SO51 8HH
• Sold Mar 2016£310,000 | 3 Bed House103, Middlebridge Street, Romsey, SO51 8HJ103, Middlebridge Street, Romsey, SO51 8HJ
• Sold Nov 2014£250,000 | 3 Bed House165, Middlebridge Street, Romsey, SO51 8HH165, Middlebridge Street, Romsey, SO51 8HH

Our analysis of the public data ranks 9, Mainstone, Romsey as the 13th largest and the 14th most expensive of the 16 addresses on Mainstone, Romsey, SO51.

Against the SO51 postcode district average, it is £55k less expensive than the typical property.

• Romsey Abbey Church of England Primary School

  700 m away
• Romsey Primary School & Nursery

  1.7 km away
• Cupernham Junior School

  2.4 km away

• The Romsey School

  1.1 km away
• The Mountbatten School

  2.5 km away
• Oasis Academy Lord's Hill

  6.6 km away

• Romsey

  |

  1.2 km away
• Mottisfont & Dunbridge

  |

  6.2 km away
• Totton

  |

  7.5 km away

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