Flat 3, 1, William Street, Windsor has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 01 Apr 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).

The most recent sale of Flat 3, 1, William Street, Windsor completed on 13th January 2012 at £274,950 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 this is the property's only sale.

Values of comparable properties have risen by 19.2% over the period since January 2012.

• Sold Jan 2012£274,950

Since 2008 26 properties similar to Flat 3, 1, William Street, Windsor have sold within a radius of 440 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 5th February 2026, was Flat 1, Templars Hall 20, St. Leonards Road, Windsor, SL4 3BU, a leasehold flat which sold for £515,000.

Read more about house prices in SL4.

• Sold Feb 2026£515,000 | 2 Bed FlatFlat 1, Templars Hall 20, St. Leonards Road, Windsor, SL4 3BUFlat 1, Templars Hall 20, St. Leonards Road, Windsor, SL4 3BU
• Sold Jul 2025£275,000 | 2 Bed FlatFlat 1, 87, Grove Road, Windsor, SL4 1HTFlat 1, 87, Grove Road, Windsor, SL4 1HT
• Sold Jun 2024£1,042,000 | 2 Bed Flat6A, Peascod Street, Windsor, SL4 1DT6A, Peascod Street, Windsor, SL4 1DT
• Sold May 2024£300,000 | 3 Bed Flat6 Queen Annes Court, Peascod Street, Windsor, SL4 1DG6 Queen Annes Court, Peascod Street, Windsor, SL4 1DG
• Sold May 2024£442,500 | 2 Bed FlatFlat 2, Templars Hall 20, St. Leonards Road, Windsor, SL4 3BUFlat 2, Templars Hall 20, St. Leonards Road, Windsor, SL4 3BU
• Sold Jan 2024£365,000 | 3 Bed Flat6A, St. Marks Road, Windsor, SL4 3BE6A, St. Marks Road, Windsor, SL4 3BE
• 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£385,000 | 2 Bed Flat8A Queen Annes Court, Peascod Street, Windsor, SL4 1DG8A Queen Annes Court, Peascod Street, Windsor, SL4 1DG
• Sold Sep 2023£382,000 | 2 Bed Flat4 Guards View 16, High Street, Windsor, SL4 1LY4 Guards View 16, High Street, Windsor, SL4 1LY
• 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 Oct 2022£1,035,000 | 2 Bed Flat13, Clarence Road, Windsor, SL4 5AH13, Clarence Road, Windsor, SL4 5AH
• Sold Jul 2022£490,000 | 2 Bed Flat13A, Clarence Road, Windsor, SL4 5AH13A, Clarence Road, Windsor, SL4 5AH
• Sold Jun 2021£360,000 | 2 Bed FlatFlat 4, 1A, Bexley Street, Windsor, SL4 5BPFlat 4, 1A, Bexley Street, Windsor, SL4 5BP
• Sold Mar 2021£375,000 | 2 Bed FlatFlat 1, 10, Sheet Street, Windsor, SL4 1BHFlat 1, 10, Sheet Street, Windsor, SL4 1BH
• Sold Apr 2017£590,000 | 2 Bed FlatFlat 10, Alexandra Court 25A, St. Leonards Road, Windsor, SL4 3BPFlat 10, Alexandra Court 25A, St. Leonards Road, Windsor, SL4 3BP
• Sold Jan 2016£425,000 | 3 Bed FlatFlat 15, Trinity Court 1, Hawtrey Road, Windsor, SL4 3FHFlat 15, Trinity Court 1, Hawtrey Road, Windsor, SL4 3FH
• Sold Nov 2014£420,000 | 2 Bed Flat2 Temple Gate, Temple Road, Windsor, SL4 1HA2 Temple Gate, Temple Road, Windsor, SL4 1HA
• Sold Aug 2012£250,000 | 2 Bed FlatFlat 1, 1, William Street, Windsor, SL4 1BBFlat 1, 1, William Street, Windsor, SL4 1BB
• Sold Jul 2012£270,000 | 2 Bed FlatFlat 1, 97, Oxford Road, Windsor, SL4 5DXFlat 1, 97, Oxford Road, Windsor, SL4 5DX
• Sold Mar 2008£125,000 | 3 Bed Flat11 Queen Annes Court, Peascod Street, Windsor, SL4 1DG11 Queen Annes Court, Peascod Street, Windsor, SL4 1DG

Of the 24 addresses on William Street, Windsor, SL4, Flat 3, 1, William Street, Windsor comes out as the 3rd largest and the 3rd most expensive in our analysis of the public data.

It is also £194k less expensive than the average property across the SL4 district.

• 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

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