1Flood planning zone: In Flood Zone 3 — check defences and insurance
Flood Zone 3 can affect insurance costs even where flood defences protect the area.
Get an insurance quote and ask the conveyancer for a flood search.
23 William Square, London, SE16 5XJ
Last sale£590,000Feb 2016 · HM Land Registry
If it moved with Southwark flat prices£561,000Aug 2026 · UK HPI
Flood planning zoneIn Flood Zone 3 — check defences and insurance
EnergyEPC CMay 2021
MapN ↑238 m ↔
Before you offer
2 things to check
2Leasehold: Lease documents needed
The lease term and charges affect future costs and mortgage options.
Ask the agent for the lease, remaining term, charges and planned works.
＋ Flood risk very low · Outside coal high-risk area · Not in a higher-radon area · EPC C
Not covered here yet: conservation area, listed buildings nearby, article 4 direction, tree protection, road noise, rail noise, airport noise. Your conveyancer’s local search covers the planning checks.
Prepare for a viewing ↓Saved privately on this devicePrice
If it moved with Southwark flat prices
£561,000
How does the asking price compare?
This home’s sale history
| Sold | Price | Type | Tenure | Record |
|---|---|---|---|---|
| Feb 2016 | £590,000 | Flat / maisonette | Leasehold | A |
| Mar 2014 | £460,000 | Flat / maisonette | Leasehold | A |
| Sep 1999 | £143,000 | Flat / maisonette | Leasehold | A |
| Aug 1995 | £107,995 | Flat / maisonette | Leasehold | A · New build |
Street sales
Same type and tenure, other homes in the last 36 months: £425,000 · 3 sales
| Address | Sold | Price | Type | Tenure |
|---|---|---|---|---|
| 21 William Square, London, SE16 5XJ | Feb 2026 | £425,000 | Flat / maisonette | Leasehold |
| 31 William Square, London, SE16 5XJ | Jan 2025 | £328,000 | Flat / maisonette | Leasehold |
| 37 William Square, London, SE16 5XJ | Nov 2023 | £480,000 | Flat / maisonette | Leasehold |
| 13 William Square, London, SE16 5XJ | Apr 2023 | £315,000 | Flat / maisonette | Leasehold |
| 33 William Square, London, SE16 5XJ | Sep 2022 | £506,000 | Flat / maisonette | Leasehold |
| 19 William Square, London, SE16 5XJ | Aug 2021 | £335,000 | Flat / maisonette | Leasehold |
| 3 William Square, London, SE16 5XJ | Apr 2021 | £420,000 | Flat / maisonette | Leasehold |
| 10 William Square, London, SE16 5XJ | Jan 2021 | £575,000 | Flat / maisonette | Leasehold |
Show all 68
| Address | Sold | Price | Type | Tenure |
|---|---|---|---|---|
| 39 William Square, London, SE16 5XJ | Sep 2020 | £435,000 | Flat / maisonette | Leasehold |
| 35 William Square, London, SE16 5XJ | Jul 2019 | £355,000 | Flat / maisonette | Leasehold |
| 33 William Square, London, SE16 5XJ | Oct 2018 | £485,000 | Flat / maisonette | Leasehold |
| 14 William Square, London, SE16 5XJ | Nov 2017 | £340,000 | Flat / maisonette | Leasehold |
| 3 William Square, London, SE16 5XJ | Sep 2017 | £390,000 | Flat / maisonette | Leasehold |
| 10 William Square, London, SE16 5XJ | Apr 2016 | £600,000 | Flat / maisonette | Leasehold |
| 35 William Square, London, SE16 5XJ | Mar 2016 | £335,000 | Flat / maisonette | Leasehold |
| 23 William Square, London, SE16 5XJ | Feb 2016 | £590,000 | Flat / maisonette | Leasehold |
| 1 William Square, London, SE16 5XJ | Jan 2015 | £470,000 | Flat / maisonette | Leasehold |
| 34 William Square, London, SE16 5XJ | Oct 2014 | £450,000 | Flat / maisonette | Leasehold |
| 33 William Square, London, SE16 5XJ | May 2014 | £410,000 | Flat / maisonette | Leasehold |
| 23 William Square, London, SE16 5XJ | Mar 2014 | £460,000 | Flat / maisonette | Leasehold |
| 8 William Square, London, SE16 5XJ | Feb 2013 | £365,000 | Flat / maisonette | Leasehold |
| 7 William Square, London, SE16 5XJ | Aug 2012 | £280,000 | Flat / maisonette | Leasehold |
| 16 William Square, London, SE16 5XJ | Mar 2012 | £247,500 | Flat / maisonette | Leasehold |
| 12 William Square, London, SE16 5XJ | Sep 2010 | £362,675 | Flat / maisonette | Leasehold |
| 37 William Square, London, SE16 5XJ | Jul 2010 | £350,000 | Flat / maisonette | Leasehold |
| 34 William Square, London, SE16 5XJ | May 2007 | £325,000 | Flat / maisonette | Leasehold |
| 10 William Square, London, SE16 5XJ | May 2007 | £339,950 | Flat / maisonette | Leasehold |
| 12 William Square, London, SE16 5XJ | Oct 2006 | £320,000 | Flat / maisonette | Leasehold |
| 33 William Square, London, SE16 5XJ | Aug 2005 | £225,000 | Flat / maisonette | Leasehold |
| 4 William Square, London, SE16 5XJ | Mar 2005 | £250,000 | Flat / maisonette | Leasehold |
| 43 William Square, London, SE16 5XJ | Dec 2004 | £228,000 | Flat / maisonette | Leasehold |
| 1 William Square, London, SE16 5XJ | Apr 2004 | £280,000 | Flat / maisonette | Leasehold |
| 35 William Square, London, SE16 5XJ | Mar 2003 | £155,000 | Flat / maisonette | Leasehold |
| 4 William Square, London, SE16 5XJ | May 2002 | £230,000 | Flat / maisonette | Leasehold |
| 45 William Square, London, SE16 5XJ | Apr 2002 | £230,000 | Flat / maisonette | Leasehold |
| 13 William Square, London, SE16 5XJ | Apr 2002 | £158,500 | Flat / maisonette | Leasehold |
| 39 William Square, London, SE16 5XJ | Oct 2001 | £180,000 | Flat / maisonette | Leasehold |
| 3 William Square, London, SE16 5XJ | May 2001 | £170,000 | Flat / maisonette | Leasehold |
| 37 William Square, London, SE16 5XJ | Oct 2000 | £177,000 | Flat / maisonette | Leasehold |
| 43 William Square, London, SE16 5XJ | Dec 1999 | £158,000 | Flat / maisonette | Leasehold |
| 23 William Square, London, SE16 5XJ | Sep 1999 | £143,000 | Flat / maisonette | Leasehold |
| 16 William Square, London, SE16 5XJ | Aug 1999 | £103,000 | Flat / maisonette | Leasehold |
| 45 William Square, London, SE16 5XJ | Jul 1999 | £139,500 | Flat / maisonette | Leasehold |
| 6 William Square, London, SE16 5XJ | Jul 1999 | £165,000 | Flat / maisonette | Leasehold |
| 3 William Square, London, SE16 5XJ | Jun 1999 | £125,000 | Flat / maisonette | Leasehold |
| 44 William Square, London, SE16 5XJ | Apr 1999 | £143,000 | Flat / maisonette | Leasehold |
| 7 William Square, London, SE16 5XJ | Apr 1999 | £95,000 | Flat / maisonette | Leasehold |
| 13 William Square, London, SE16 5XJ | Oct 1998 | £86,000 | Flat / maisonette | Leasehold |
| 8 William Square, London, SE16 5XJ | Jun 1998 | £138,500 | Flat / maisonette | Leasehold |
| 33 William Square, London, SE16 5XJ | Jun 1998 | £106,500 | Flat / maisonette | Leasehold |
| 14 William Square, London, SE16 5XJ | Feb 1998 | £89,950 | Flat / maisonette | Leasehold |
| 21 William Square, London, SE16 5XJ | Sep 1997 | £130,000 | Flat / maisonette | Leasehold |
| 35 William Square, London, SE16 5XJ | May 1997 | £60,000 | Flat / maisonette | Leasehold |
| 33 William Square, London, SE16 5XJ | Mar 1997 | £87,000 | Flat / maisonette | Leasehold |
| 31 William Square, London, SE16 5XJ | Jul 1996 | £73,995 | Flat / maisonette | Leasehold |
| 1 William Square, London, SE16 5XJ | Dec 1995 | £148,995 | Flat / maisonette | Leasehold |
| 4 William Square, London, SE16 5XJ | Oct 1995 | £125,995 | Flat / maisonette | Leasehold |
| 10 William Square, London, SE16 5XJ | Sep 1995 | £148,995 | Flat / maisonette | Leasehold |
| 7 William Square, London, SE16 5XJ | Aug 1995 | £102,995 | Flat / maisonette | Leasehold |
| 8 William Square, London, SE16 5XJ | Aug 1995 | £127,500 | Flat / maisonette | Leasehold |
| 12 William Square, London, SE16 5XJ | Aug 1995 | £126,995 | Flat / maisonette | Leasehold |
| 3 William Square, London, SE16 5XJ | Aug 1995 | £94,995 | Flat / maisonette | Leasehold |
| 6 William Square, London, SE16 5XJ | Aug 1995 | £154,000 | Flat / maisonette | Leasehold |
| 13 William Square, London, SE16 5XJ | Aug 1995 | £156,995 | Flat / maisonette | Leasehold |
| 23 William Square, London, SE16 5XJ | Aug 1995 | £107,995 | Flat / maisonette | Leasehold |
| 21 William Square, London, SE16 5XJ | Aug 1995 | £119,995 | Flat / maisonette | Leasehold |
| 16 William Square, London, SE16 5XJ | Jul 1995 | £83,995 | Flat / maisonette | Leasehold |
| 14 William Square, London, SE16 5XJ | Jul 1995 | £70,000 | Flat / maisonette | Leasehold |
The land
Flood planning zone: In Flood Zone 3 — check defences and insurance
Flood Zone 3 can affect insurance costs even where flood defences protect the area.
Get an insurance quote and ask the conveyancer for a flood search.
＋ Flood risk very low · Outside coal high-risk area · Not in a higher-radon area
Not covered here yet: conservation area, listed buildings nearby, article 4 direction, tree protection. Your conveyancer’s local search covers the planning checks.
View building and land map ↑The building
EPC C
Poor insulation or an EPC E–G rating can mean higher heating bills.
Read the full certificate and ask about insulation and heating costs.
- Floor area
- 62 m²
- Potential EPC band
- C
- Age band
- England and Wales: 1996-2002
- Walls (certificate wording)
- Cavity wall, as built, insulated (assumed)
- Roof (certificate wording)
- Pitched, 200 mm loft insulation
- Windows (certificate wording)
- Fully double glazed
- Heating (certificate wording)
- Boiler, mains gas
- Building height
- Unavailable
Living
Broadband in the area
Postcode residential gigabit coverage: 100%
Full fibre in the local authority: 82.5%
Schools nearby
- Peter Hills with St Mary's and St Paul's CofE Primary SchoolPrimary · 339 m · Good
- Redriff Primary, City of London AcademyPrimary · 570 m · Outstanding
- Bacon's CollegeSecondary · 600 m · Good
- Cyril Jackson Primary SchoolPrimary · 668 m · Not judged
- The Hamlet School692 m · Standards maintained
- St John's Roman Catholic Primary SchoolPrimary · 786 m · Not judged
- Sir William Burrough Primary SchoolPrimary · 799 m · Not judged
- Stepney Greencoat Church of England Primary SchoolPrimary · 885 m · Good
- Alfred Salter Primary SchoolPrimary · 912 m · School remains Good
- Marion Richardson Primary SchoolPrimary · 952 m · Outstanding
- Cayley Primary SchoolPrimary · 1009 m · School remains Good
- Stepney All Saints Church of England Secondary SchoolSecondary · 1125 m · School remains Outstanding
- Bishop Challoner Catholic SchoolSecondary · 1166 m · Good
- Blue Gate Fields Junior SchoolPrimary · 1210 m · Good
- Blue Gate Fields Infants' SchoolPrimary · 1210 m · Standards maintained
- St Peter's London Docks CofE Primary SchoolPrimary · 1216 m · Standards maintained
- Halley Primary SchoolPrimary · 1231 m · Good
- Albion Primary SchoolPrimary · 1237 m · Good
- St Mary and St Michael Primary SchoolPrimary · 1286 m · School remains Good
- Our Lady and St Joseph Catholic Primary SchoolPrimary · 1288 m · School remains Good
- Mulberry Stepney Green Mathematics and Computing CollegeSecondary · 1310 m · School remains Good
- Mayflower Primary SchoolPrimary · 1333 m · School remains Outstanding
- Seven Mills Primary SchoolPrimary · 1371 m · Good
- Stebon Primary SchoolPrimary · 1373 m · Outstanding
- St Paul With St Luke CofE Primary FederationPrimary · 1388 m · Standards maintained
- Bygrove Primary SchoolPrimary · 1463 m · Outstanding
- New City College16 plus · 1475 m
Area context
Deprivation decile (1 is most deprived within its nation): 9 · England 2025
Recorded police incidents: 167
SE16 5XJ →Before you offer
Viewing checklist
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Lease documents
Needs document · Saved privately on this device
Next steps
Ask a surveyor to confirm Level 2 or Level 3 after reviewing the age, condition and alterations.
Ask the conveyancer about local authority, drainage, environmental, flood and mining searches appropriate to this address.
Compare survey levels →Questions for the agent
Questions for your surveyor and conveyancer
Ask the surveyor
Which survey level covers this home’s condition, damp, cracks and any alterations?
Ask the conveyancer
Which title, drainage and local searches are needed for this address?
- Flood planning zone: Get an insurance quote and ask the conveyancer for a flood search.
- Leasehold: Ask the agent for the lease, remaining term, charges and planned works.
Sources and licences
Contains British Geological Survey materials © UKRI 2026
Radon Potential classification UK Health Security Agency © Crown copyright 2022
© Environment Agency copyright and/or database right 2026. All rights reserved.
INSPIRE conditions · Sources and licences