21, Foster Avenue
21, Foster Avenue
Description & Estimates







Public records show 21, Foster Avenue, Windsor to be a mid-century freehold house with 948 ft2 of internal area, sitting on a 330 m2 plot.
In this area, houses of this size normally have 3 bedrooms with a garden.
21, Foster Avenue, Windsor has an estimated sale value of £432,362 and an estimated rental value of £1,962 per month, assuming reasonable condition and based on the information available.
Foster Avenue, Windsor, SL4 lies within the SL4 postal district.
Our Data Sources
21, Foster Avenue, Windsor has 2 entries in the Land Registry , most recently in September 2018 and a single entry in the EPC database dated December 2008.
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, Foster Avenue, Windsor would be worth £453,980, with a potential rental value of £2,060 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £402,097, with a rental value of £1,824 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Recent Market Change
The estimated sale value of 21, Foster Avenue, Windsor has dropped by £1,367 (0.3%) over the last year. During the same period, its estimated monthly rental value has risen by £57 (2.9%). The property's estimated gross yield is currently 5.4%.
Plot Size
21, Foster Avenue, Windsor occupies a 330 m2 plot as recorded by HM Land Registry.
Of the 13 other houses in this postcode, 10 have recorded plot sizes, and this one ranks as the largest.
Energy Efficiency
21, Foster Avenue, Windsor has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 15 Dec 2008.
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, Foster Avenue, Windsor last changed hands on 7th September 2018, selling for £250,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold twice since 1995.
The market for similar properties has risen by 34.3% since September 2018.
- Sold Sep 2018£250,000
- Sold Mar 2009£249,950
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 510 metres of 21, Foster Avenue, Windsor across the last 2 years.
Most recently, 13, Burton Way, Windsor, SL4 4NJ, a freehold house, sold at £400,000 on the 4th November 2025.
Read more about house prices in SL4.
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks 21, Foster Avenue, Windsor as the 12th largest and the 13th most expensive of the 46 addresses on Foster Avenue, Windsor, SL4.
Against the SL4 postcode district average, it is £153k less expensive than the typical property.
More reading links
Schools Nearby
- 200mHilltop First School
- 500mDedworth Green First School
- 700mClewer Green CofE First School
- 1.1kmWindsor Girls' School
- 1.8kmThe Windsor Boys' School
- 4.3kmSlough and Eton Church of England Business and Enterprise College
More reading links
Public Transport Nearby
Windsor & Eton Central station is the nearest stop to 21, Foster Avenue, Windsor at 2.5 kilometres away.
- 2.5kmWindsor & Eton Central
- 2.9kmWindsor & Eton Riverside
- 4.6kmDatchet
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a very low risk of flooding.

