Our Data Sources
21, St. Marks Place, Windsor has a single entry in the Land Registry from July 2015 and a single entry in the EPC database dated September 2011.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate 21, St. Marks Place, Windsor would be worth £758,202, with a potential rental value of £2,440 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £671,550, with a rental value of £2,162 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
21, St. Marks Place, Windsor occupies a 171 m2 plot as recorded by HM Land Registry.
All 37 other houses in this postcode have recorded plot sizes, and this one ranks as the 3rd largest.
Energy Efficiency
21, St. Marks Place, Windsor has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 20 Sep 2011.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
21, St. Marks Place, Windsor last changed hands on 29th July 2015, selling for £600,000. The transaction was logged as a freehold house by HM Land Registry.
That is its only recorded sale since 1995.
The market for similar properties has dropped by 4.4% since July 2015.
- Sold Jul 2015£600,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 125 sales of comparable properties within 410 metres of 21, St. Marks Place, Windsor across the last 2 years.
Most recently, 3, Queens Road, Windsor, SL4 3BQ, a freehold house, sold at £875,000 on the 31st July 2025.
Read more about house prices in SL4.
- Sold Jul 2025£875,000 | 4 Bed House3, Queens Road, Windsor, SL4 3BQ3, Queens Road, Windsor, SL4 3BQ
- Sold Mar 2025£682,000 | 3 Bed House84, Grove Road, Windsor, SL4 1HS84, Grove Road, Windsor, SL4 1HS
- Sold Nov 2024£635,000 | 3 Bed House2, St. Marks Place, Windsor, SL4 3BG2, St. Marks Place, Windsor, SL4 3BG
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Our analysis of the public data ranks 21, St. Marks Place, Windsor as the 11th largest and the 11th most expensive of the 37 addresses on St. Marks Place, Windsor, SL4.
Against the SL4 postcode district average, it is £140k more expensive than the typical property.
More reading links
Schools Nearby
- The Queen Anne Royal Free CofE Controlled First School600 m away
- Trinity St Stephen CofE Aided First School700 m away
- Oakfield First School700 m away
- The Windsor Boys' School800 m away
- Windsor Girls' School1.2 km away
- Churchmead Church of England (VA) School2.6 km away
More reading links
Public Transport Nearby
- Windsor & Eton Central|800 m away
- Windsor & Eton Riverside|1.1 km away
- Datchet|2.5 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.












