Flat 4, 1, William Street, Windsor has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 22 Jul 2022.

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

Flat 4, 1, William Street, Windsor last changed hands on 22nd November 2013, selling for £297,000. The transaction was logged as a leasehold flat by HM Land Registry.

That is its only recorded sale since 1995.

The market for similar properties has risen by 12.6% since November 2013.

• Sold Nov 2013£297,000

Land Registry records and our Estate Agent network show 96 sales of comparable properties within 440 metres of Flat 4, 1, William Street, Windsor since 2012.

Most recently, 30, Mountbatten Square, Windsor, SL4 1SY, a leasehold flat, sold at £360,000 on the 12th May 2026.

Read more about house prices in SL4.

• Sold May 2026£360,000 | 2 Bed Flat30, Mountbatten Square, Windsor, SL4 1SY30, Mountbatten Square, Windsor, SL4 1SY
• Sold Aug 2025£263,000 | 2 Bed Flat19, Christian Square, Windsor, SL4 1TB19, Christian Square, Windsor, SL4 1TB
• Sold Mar 2025£345,000 | 2 Bed FlatFlat 3, Trinity Court 1, Hawtrey Road, Windsor, SL4 3FHFlat 3, Trinity Court 1, Hawtrey Road, Windsor, SL4 3FH
• Sold Mar 2025£320,000 | 2 Bed Flat36, Athlone Square, Windsor, SL4 1ST36, Athlone Square, Windsor, SL4 1ST
• Sold Jan 2025£360,000 | 2 Bed FlatFlat 11, Trinity Court 1, Hawtrey Road, Windsor, SL4 3FHFlat 11, Trinity Court 1, Hawtrey Road, Windsor, SL4 3FH
• Sold Jun 2024£1,042,000 | 2 Bed Flat6A, Peascod Street, Windsor, SL4 1DT6A, Peascod Street, Windsor, SL4 1DT
• Sold Dec 2023£600,000 | 2 Bed Flat140, Peascod Street, Windsor, SL4 1DS140, Peascod Street, Windsor, SL4 1DS
• Sold Dec 2023£390,000 | 2 Bed Flat8E Queen Annes Court, Peascod Street, Windsor, SL4 1DG8E Queen Annes Court, Peascod Street, Windsor, SL4 1DG
• Sold Nov 2023£380,000 | 2 Bed Flat6E Queen Annes Court, Peascod Street, Windsor, SL4 1DG6E Queen Annes Court, Peascod Street, Windsor, SL4 1DG
• Sold Nov 2023£385,000 | 2 Bed Flat8A Queen Annes Court, Peascod Street, Windsor, SL4 1DG8A Queen Annes Court, Peascod Street, Windsor, SL4 1DG
• Sold Sep 2023£345,000 | 2 Bed Flat6D Queen Annes Court, Peascod Street, Windsor, SL4 1DG6D Queen Annes Court, Peascod Street, Windsor, SL4 1DG
• Sold Aug 2023£795,000 | 2 Bed Flat77, Peascod Street, Windsor, SL4 1DH77, Peascod Street, Windsor, SL4 1DH
• Sold Dec 2022£365,000 | 2 Bed Flat43, Athlone Square, Windsor, SL4 1ST43, Athlone Square, Windsor, SL4 1ST
• Sold Oct 2022£377,000 | 2 Bed FlatFlat 10, Trinity Court 1, Hawtrey Road, Windsor, SL4 3FHFlat 10, Trinity Court 1, Hawtrey Road, Windsor, SL4 3FH
• Sold Mar 2022£400,000 | 2 Bed FlatFlat 8, Peascod House 1, Peascod Place, Windsor, SL4 1AFFlat 8, Peascod House 1, Peascod Place, Windsor, SL4 1AF
• Sold Dec 2021£365,000 | 2 Bed FlatFlat 7, Trinity Court 1, Hawtrey Road, Windsor, SL4 3FHFlat 7, Trinity Court 1, Hawtrey Road, Windsor, SL4 3FH
• Sold Jul 2020£395,000 | 2 Bed Flat2, Ralston Court, Windsor, SL4 1GF2, Ralston Court, Windsor, SL4 1GF
• Sold May 2020£2,000 | 2 Bed Flat7, Peascod Street, Windsor, SL4 1DT7, Peascod Street, Windsor, SL4 1DT
• Sold Jun 2014£293,000 | 2 Bed FlatFlat 2, Mulberry House 3, William Street, Windsor, SL4 1BBFlat 2, Mulberry House 3, William Street, Windsor, SL4 1BB
• Sold Aug 2012£210,000 | 2 Bed FlatFlat 2, 1, William Street, Windsor, SL4 1BBFlat 2, 1, William Street, Windsor, SL4 1BB

Our analysis of the public data ranks Flat 4, 1, William Street, Windsor as the 5th largest and the 7th most expensive of the 24 addresses on William Street, Windsor, SL4.

Against the SL4 postcode district average, it is £238k less expensive than the typical property.

• Trinity St Stephen CofE Aided First School

  600 m away
• The Queen Anne Royal Free CofE Controlled First School

  800 m away
• Eton Porny CofE First School

  1.0 km away

• The Windsor Boys' School

  700 m away
• Windsor Girls' School

  1.6 km away
• Churchmead Church of England (VA) School

  2.2 km away

• Windsor & Eton Central

  |

  300 m away
• Windsor & Eton Riverside

  |

  600 m away
• Datchet

  |

  2.2 km away

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