4, William Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 24 Apr 2025.

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

The most recent sale of 4, William Square completed on 23rd March 2005 at £250,000 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 the property has sold 3 times.

• Sold Mar 2005£250,000
• Sold May 2002£230,000
• Sold Oct 1995£125,995

Since 2013 170 properties similar to 4, William Square have sold within a radius of 390 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 13th February 2026, was 21, William Square, London, SE16 5XJ, a leasehold flat which sold for £425,000.

Read more about house prices in SE16.

• Sold Feb 2026£425,000 | 2 Bed Flat21, William Square, London, SE16 5XJ21, William Square, London, SE16 5XJ
• Sold Oct 2025£465,000 | 2 Bed Flat22, Admiral Place, London, SE16 5NY22, Admiral Place, London, SE16 5NY
• Sold Jul 2025£440,000 | 2 Bed FlatFlat 35, Lamb Court 69, Narrow Street, London, E14 8EJFlat 35, Lamb Court 69, Narrow Street, London, E14 8EJ
• Sold Aug 2024£465,000 | 2 Bed Flat9, Sophia Square, London, SE16 5XL9, Sophia Square, London, SE16 5XL
• Sold Nov 2023£450,000 | 2 Bed Flat24, Frederick Square, London, SE16 5XR24, Frederick Square, London, SE16 5XR
• Sold Aug 2022£465,000 | 2 Bed Flat83, Bywater Place, London, SE16 5NE83, Bywater Place, London, SE16 5NE
• Sold Jul 2022£445,000 | 2 Bed Flat2, Edward Square, London, SE16 5EE2, Edward Square, London, SE16 5EE
• Sold Jun 2022£480,000 | 2 Bed Flat33, Edward Square, London, SE16 5EE33, Edward Square, London, SE16 5EE
• Sold Jan 2022£475,000 | 2 Bed Flat24, Admiral Place, London, SE16 5NY24, Admiral Place, London, SE16 5NY
• Sold Apr 2021£500,000 | 2 Bed Flat10, Admiral Place, London, SE16 5NY10, Admiral Place, London, SE16 5NY
• Sold Dec 2020£465,000 | 2 Bed Flat2, Admiral Place, London, SE16 5NY2, Admiral Place, London, SE16 5NY
• Sold Sep 2020£435,000 | 2 Bed Flat39, William Square, London, SE16 5XJ39, William Square, London, SE16 5XJ
• Sold Mar 2020£475,000 | 2 Bed Flat23, Sophia Square, London, SE16 5XL23, Sophia Square, London, SE16 5XL
• Sold Jul 2019£490,000 | 2 Bed Flat29, Edward Square, London, SE16 5EE29, Edward Square, London, SE16 5EE
• Sold Jun 2019£475,000 | 2 Bed Flat24, Edward Square, London, SE16 5EE24, Edward Square, London, SE16 5EE
• Sold Oct 2018£525,000 | 2 Bed Flat11, Edward Square, London, SE16 5EE11, Edward Square, London, SE16 5EE
• Sold Feb 2016£590,000 | 2 Bed Flat23, William Square, London, SE16 5XJ23, William Square, London, SE16 5XJ
• Sold Dec 2015£440,600 | 2 Bed Flat21, Admiral Place, London, SE16 5NY21, Admiral Place, London, SE16 5NY
• Sold Feb 2015£515,000 | 2 Bed Flat12, Edward Square, London, SE16 5EE12, Edward Square, London, SE16 5EE
• Sold Feb 2013£365,000 | 2 Bed Flat8, William Square, London, SE16 5XJ8, William Square, London, SE16 5XJ

Of the 39 addresses on William Square, London, SE16, 4, William Square comes out as the 14th largest and the 14th most expensive in our analysis of the public data.

It is also £39k less expensive than the average property across the SE16 district.

• Peter Hills with St Mary's and St Paul's CofE Primary School

  300 m away
• Redriff Primary, City of London Academy

  600 m away
• Cyril Jackson Primary School

  700 m away

• Bacon's College

  600 m away
• Stepney All Saints Church of England Secondary School

  1.1 km away
• Bishop Challoner Catholic School

  1.2 km away

• Limehouse

  |

  600 m away
• Westferry

  |

  800 m away
• West India Quay

  |

  1.2 km away

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