20, Knapmill Road occupies a 159 m² plot as recorded by HM Land Registry.

Of the 34 other houses in this postcode, 16 have recorded plot sizes, and this one ranks as the 12th largest.

20, Knapmill Road last changed hands on 10th September 2007, selling for £211,000. The transaction was logged as a freehold house by HM Land Registry.

That is its only recorded sale since 1995.

The market for similar properties has risen by 157.1% since September 2007.

• Sold Sep 2007£211,000

Land Registry records and our Estate Agent network show 83 sales of comparable properties within 530 metres of 20, Knapmill Road since 2012.

Most recently, 128, Grangemill Road, London, SE6 3LA, a freehold house, sold at £430,000 on the 17th October 2025.

Read more about house prices in SE6.

• Sold Oct 2025£430,000 | 3 Bed House128, Grangemill Road, London, SE6 3LA128, Grangemill Road, London, SE6 3LA
• Sold Sep 2025£430,000 | 3 Bed House12, Firhill Road, London, SE6 3JS12, Firhill Road, London, SE6 3JS
• Sold Aug 2025£425,000 | 3 Bed House48, Grangemill Road, London, SE6 3JY48, Grangemill Road, London, SE6 3JY
• Sold Jul 2025£410,000 | 3 Bed House105, Grangemill Road, London, SE6 3LA105, Grangemill Road, London, SE6 3LA
• Sold Feb 2025£425,000 | 3 Bed House5, Grangemill Road, London, SE6 3JX5, Grangemill Road, London, SE6 3JX
• Sold Dec 2024£430,000 | 3 Bed House5, Athelney Street, London, SE6 3LE5, Athelney Street, London, SE6 3LE
• Sold Sep 2024£430,000 | 3 Bed House24, Brookehowse Road, London, SE6 3TL24, Brookehowse Road, London, SE6 3TL
• Sold Aug 2024£430,000 | 3 Bed House5, Knapmill Way, London, SE6 3TD5, Knapmill Way, London, SE6 3TD
• Sold Mar 2024£445,000 | 3 Bed House80, Grangemill Road, London, SE6 3JZ80, Grangemill Road, London, SE6 3JZ
• Sold Feb 2024£415,000 | 3 Bed House76, Grangemill Road, London, SE6 3JZ76, Grangemill Road, London, SE6 3JZ
• Sold Jan 2024£370,000 | 3 Bed House4, Bedford Mews, London, SE6 3DX4, Bedford Mews, London, SE6 3DX
• Sold Jan 2024£372,500 | 3 Bed House24, Knapmill Road, London, SE6 3SZ24, Knapmill Road, London, SE6 3SZ
• Sold Feb 2023£373,000 | 3 Bed House2, Bedford Mews, London, SE6 3DX2, Bedford Mews, London, SE6 3DX
• Sold Nov 2022£415,000 | 3 Bed House38, Brookehowse Road, London, SE6 3TL38, Brookehowse Road, London, SE6 3TL
• Sold Feb 2022£380,000 | 3 Bed House12, Knapmill Way, London, SE6 3TD12, Knapmill Way, London, SE6 3TD
• Sold Oct 2021£410,000 | 3 Bed House5, Ghent Street, London, SE6 3JW5, Ghent Street, London, SE6 3JW
• Sold Jun 2020£372,000 | 3 Bed House61, Brookehowse Road, London, SE6 3TJ61, Brookehowse Road, London, SE6 3TJ
• Sold Dec 2017£360,000 | 3 Bed House84, Knapmill Road, London, SE6 3TE84, Knapmill Road, London, SE6 3TE
• Sold Oct 2017£350,000 | 3 Bed House11, Firhill Road, London, SE6 3JS11, Firhill Road, London, SE6 3JS
• Sold Jul 2012£187,000 | 3 Bed House8, Brookehowse Road, London, SE6 3TL8, Brookehowse Road, London, SE6 3TL

Our analysis of the public data ranks 20, Knapmill Road as the 14th largest and the 75th most expensive of the 169 addresses on Knapmill Road, London, SE6.

Against the SE6 postcode district average, it is £40k less expensive than the typical property.

• Athelney Primary School

  400 m away
• Rushey Green Primary School

  700 m away
• Rathfern Primary School

  800 m away

• Conisborough College

  900 m away
• Sedgehill Academy

  1.6 km away
• Forest Hill School

  1.8 km away

• Bellingham

  |

  400 m away
• Catford

  |

  800 m away
• Catford Bridge

  |

  800 m away

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