21, Lock Chase occupies a 642 m² plot as recorded by HM Land Registry.

Of the 10 other houses in this postcode, 9 have recorded plot sizes, and this one ranks as the 2nd largest.

21, Lock Chase has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 11 Nov 2025.

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

21, Lock Chase last changed hands on 14th April 2026, selling for £1,695,000. 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 dropped by 1.5% since April 2026.

• Sold Apr 2026£1,695,000

Land Registry records and our Estate Agent network show 24 sales of comparable properties within 420 metres of 21, Lock Chase since 2010.

Most recently, 3, Eton Grove, London, SE13 5BY, a freehold house, sold at £1,575,000 on the 10th April 2026.

Read more about house prices in SE3.

• Sold Apr 2026£1,575,000 | 5 Bed House3, Eton Grove, London, SE13 5BY3, Eton Grove, London, SE13 5BY
• Sold May 2025£1,775,000 | 5 Bed House85, Lee Road, London, SE3 9EN85, Lee Road, London, SE3 9EN
• Sold Aug 2024£1,680,000 | 4 Bed House21, Blackheath Park, London, SE3 9RW21, Blackheath Park, London, SE3 9RW
• Sold Jun 2024£1,750,000 | 4 Bed House4, Blackheath Park, London, SE3 9RR4, Blackheath Park, London, SE3 9RR
• Sold Nov 2023£1,512,500 | 5 Bed House8, Eton Grove, London, SE13 5BY8, Eton Grove, London, SE13 5BY
• Sold Dec 2022£1,500,000 | 3 Bed House24, Lock Chase, London, SE3 9HA24, Lock Chase, London, SE3 9HA
• Sold Jun 2022£1,521,000 | 5 Bed House8, Kingswood Place, London, SE13 5BU8, Kingswood Place, London, SE13 5BU
• Sold Mar 2021£1,300,000 | 4 Bed HouseSancho, Bennett Park, London, SE3 9RBSancho, Bennett Park, London, SE3 9RB
• Sold Mar 2021£1,500,000 | 5 Bed House14, Eton Grove, London, SE13 5BY14, Eton Grove, London, SE13 5BY
• Sold Feb 2021£1,773,000 | 5 Bed House93, Dacre Park, London, SE13 5BX93, Dacre Park, London, SE13 5BX
• Sold Aug 2020£1,465,000 | 5 Bed House12, Eton Grove, London, SE13 5BY12, Eton Grove, London, SE13 5BY
• Sold Dec 2018£1,296,000 | 5 Bed House10, Eton Grove, London, SE13 5BY10, Eton Grove, London, SE13 5BY
• Sold Mar 2016£1,630,000 | 5 Bed House77, Dacre Park, London, SE13 5BX77, Dacre Park, London, SE13 5BX
• Sold Oct 2015£1,511,000 | 5 Bed House80, Lock Chase, London, SE3 9HA80, Lock Chase, London, SE3 9HA
• Sold Mar 2015£1,435,000 | 5 Bed House28, Lee Road, London, SE3 9RT28, Lee Road, London, SE3 9RT
• Sold Jan 2015£1,390,000 | 4 Bed House20, Lock Chase, London, SE3 9HA20, Lock Chase, London, SE3 9HA
• Sold Oct 2014£1,330,030 | 4 Bed House84, Lock Chase, London, SE3 9HA84, Lock Chase, London, SE3 9HA
• Sold Aug 2014£1,270,000 | 5 Bed House9, Eton Grove, London, SE13 5BY9, Eton Grove, London, SE13 5BY
• Sold Jan 2012£750,000 | 5 Bed House1, Quentin Road, London, SE13 5DQ1, Quentin Road, London, SE13 5DQ
• Sold Apr 2010£900,000 | 5 Bed House18, Lock Chase, London, SE3 9HA18, Lock Chase, London, SE3 9HA

Our analysis of the public data ranks 21, Lock Chase as the 6th largest and the 5th most expensive of the 69 addresses on Lock Chase, London, SE3.

Against the SE3 postcode district average, it is £1.083m more expensive than the typical property.

• St Margaret's Lee CofE Primary School

  300 m away
• John Ball Primary School

  500 m away
• All Saints' Church of England Primary School Blackheath

  800 m away

• Thomas Tallis School

  1.4 km away
• St Ursula's Convent School

  1.7 km away

• Blackheath

  |

  400 m away
• Hither Green

  |

  1.2 km away
• Lewisham

  |

  1.4 km away

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