12, William Square has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 22 Jul 2024.

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 12, William Square completed on 14th September 2010 at £362,675 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 the property has sold 3 times.

Values of comparable properties have risen by 20.3% over the period since September 2010.

• Sold Sep 2010£362,675
• Sold Oct 2006£320,000
• Sold Aug 1995£126,995

Since 2015 177 properties similar to 12, 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 Mar 2025£525,000 | 3 Bed FlatApartment 17, 392, Rotherhithe Street, London, SE16 5DSApartment 17, 392, Rotherhithe Street, London, SE16 5DS
• 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 Aug 2022£500,000 | 3 Bed Flat77, Bywater Place, London, SE16 5NE77, 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 Jan 2021£575,000 | 3 Bed Flat10, William Square, London, SE16 5XJ10, William Square, London, SE16 5XJ
• Sold Dec 2020£465,000 | 2 Bed Flat2, Admiral Place, London, SE16 5NY2, Admiral Place, London, SE16 5NY
• 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£540,000 | 2 Bed Flat1, Edward Square, London, SE16 5EE1, Edward Square, London, SE16 5EE
• Sold Oct 2018£525,000 | 2 Bed Flat11, Edward Square, London, SE16 5EE11, Edward Square, London, SE16 5EE
• Sold Jun 2016£500,000 | 2 Bed Flat30, Edward Square, London, SE16 5EE30, Edward Square, London, SE16 5EE
• Sold Feb 2015£515,000 | 2 Bed Flat12, Edward Square, London, SE16 5EE12, Edward Square, London, SE16 5EE
• Sold Jan 2015£470,000 | 2 Bed Flat1, William Square, London, SE16 5XJ1, William Square, London, SE16 5XJ

Of the 39 addresses on William Square, London, SE16, 12, William Square comes out as the 12th largest and the 12th most expensive in our analysis of the public data.

It is also £23k 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.