HM Land Registry records the plot of land for 27, Grassmount as measuring 200 m².

That makes it the 6th largest plot in the postcode, where all 29 other houses have recorded plot data.

The most recent sale of 27, Grassmount completed on 14th December 2007 at £415,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold twice.

Values of comparable properties have risen by 122.2% over the period since December 2007.

Since 2010 90 properties similar to 27, Grassmount have sold within a radius of 400 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 24th September 2025, was 13, Little Brownings, London, SE23 3XJ, a freehold house which sold for £799,950.

Read more about house prices in SE23.

• Sold Sep 2025£799,950 | 4 Bed House13, Little Brownings, London, SE23 3XJ13, Little Brownings, London, SE23 3XJ
• Sold Oct 2024£770,000 | 4 Bed House1, Little Brownings, London, SE23 3XJ1, Little Brownings, London, SE23 3XJ
• Sold Jun 2024£896,000 | 4 Bed House7, Grassmount, London, SE23 3UW7, Grassmount, London, SE23 3UW
• Sold Feb 2023£825,000 | 4 Bed House16, Grassmount, London, SE23 3UW16, Grassmount, London, SE23 3UW
• Sold Oct 2022£875,000 | 4 Bed House9, Grassmount, London, SE23 3UW9, Grassmount, London, SE23 3UW
• Sold Jul 2022£825,000 | 4 Bed House24, Grassmount, London, SE23 3UW24, Grassmount, London, SE23 3UW
• Sold Apr 2022£765,000 | 4 Bed House2 St. Paul's Conversion, Taymount Rise, London, SE23 3US2 St. Paul's Conversion, Taymount Rise, London, SE23 3US
• Sold Jan 2022£730,000 | 4 Bed House21, Forestholme Close, London, SE23 3UQ21, Forestholme Close, London, SE23 3UQ
• Sold Dec 2021£735,000 | 4 Bed House5 St. Paul's Conversion, Taymount Rise, London, SE23 3US5 St. Paul's Conversion, Taymount Rise, London, SE23 3US
• Sold Sep 2021£740,000 | 4 Bed House31, Grassmount, London, SE23 3UW31, Grassmount, London, SE23 3UW
• Sold Aug 2021£773,200 | 4 Bed House16, Little Brownings, London, SE23 3XJ16, Little Brownings, London, SE23 3XJ
• Sold Apr 2021£675,000 | 4 Bed House7, Forestholme Close, London, SE23 3UQ7, Forestholme Close, London, SE23 3UQ
• Sold Jan 2021£735,000 | 4 Bed House3 St. Paul's Conversion, Taymount Rise, London, SE23 3US3 St. Paul's Conversion, Taymount Rise, London, SE23 3US
• Sold Nov 2020£738,000 | 4 Bed House14, Little Brownings, London, SE23 3XJ14, Little Brownings, London, SE23 3XJ
• Sold Sep 2019£650,000 | 4 Bed House18, Forestholme Close, London, SE23 3UQ18, Forestholme Close, London, SE23 3UQ
• Sold Apr 2019£760,000 | 4 Bed House10, Grassmount, London, SE23 3UW10, Grassmount, London, SE23 3UW
• Sold Aug 2017£685,000 | 4 Bed House3, Forestholme Close, London, SE23 3UQ3, Forestholme Close, London, SE23 3UQ
• Sold Aug 2017£810,000 | 4 Bed House18, Grassmount, London, SE23 3UW18, Grassmount, London, SE23 3UW
• Sold Jun 2014£650,000 | 4 Bed House26, Grassmount, London, SE23 3UW26, Grassmount, London, SE23 3UW
• Sold Oct 2010£396,850 | 4 Bed House1, Grassmount, London, SE23 3UW1, Grassmount, London, SE23 3UW

Of the 31 addresses on Grassmount, London, SE23, 27, Grassmount comes out as the 5th largest and the 5th most expensive in our analysis of the public data.

It is also £298k more expensive than the average property across the SE23 district.

• Eliot Bank Primary School

  200 m away
• Holy Trinity Church of England Primary School

  400 m away
• Horniman Primary School

  500 m away

• Sydenham School

  500 m away
• Forest Hill School

  1.1 km away
• Kingsdale Foundation School

  1.9 km away

• Forest Hill

  |

  500 m away
• Sydenham

  |

  1.3 km away
• Sydenham (London)

  |

  1.4 km away

The flood risk here is rated Very Low, based on Environment Agency data.