Mountbatten Square - SL4 1SY
Key Postcode Insights
SL4 1SY is a residential postcode situated on Mountbatten Square, Windsor, SL4 with 32 addresses.
It ranks as the 1071st largest and 82nd most expensive of the 1,256 postcodes in the SL4 area. The most common property type is a mid-century flat built between 1936 and 1979.
The postcode contains a total of 32 properties: 32 flats.
- Ave. Sale Price
- £274,710
- 10 Year change
- down 5.8%
- Ave. Rental Price
- £1,368pcm
- 10 Year change
- up 19.6%
- Ave. £ per ft²
- £435/ft²
- Ave. Gross Yield
- 6.0%/year/yr
Key Postcode Insights
SL4 1SY is a residential postcode situated on Mountbatten Square, Windsor, SL4 with 32 addresses.
It ranks as the 1071st largest and 82nd most expensive of the 1,256 postcodes in the SL4 area. The most common property type is a mid-century flat built between 1936 and 1979.
The postcode contains a total of 32 properties: 32 flats.
- Ave. Sale Price
- £274,710
- 10 Year change
- down 5.8%
- Ave. Rental Price
- £1,368pcm
- 10 Year change
- up 19.6%
- Ave. £ per ft²
- £435/ft²
- Ave. Gross Yield
- 6.0%/year/yr
Explore Propertiesin SL4 1SY
- 29 Mountbatten Square
2 Bed Mid-century Flat
- 30 Mountbatten Square
2 Bed Mid-century Flat
- 33 Mountbatten Square
2 Bed Modern Flat
Sales Market Trends
The last sale in SL4 1SY sold for £360,000 on 12th May 2026. Since then prices are up an average of 0.4%.
The current average value in the postcode is £274,710.
The SL4 1SY Sales Market has decreased by 5.8% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | -1.1% | £274,710 |
| June 2025 | 0.3% | £277,681 |
| June 2024 | -2.8% | £276,807 |
| June 2023 | -0.8% | £284,658 |
| June 2022 | 2.8% | £286,974 |
| June 2021 | 1.2% | £279,119 |
| June 2020 | 1% | £275,776 |
| June 2019 | -1.8% | £273,124 |
| June 2018 | -3.2% | £278,145 |
| June 2017 | -1.5% | £287,436 |
| June 2016 | 8.9% | £291,754 |
| June 2015 | 7.9% | £267,922 |
| June 2014 | 10.8% | £248,377 |
| June 2013 | 5.2% | £224,133 |
| June 2012 | -2.5% | £213,112 |
| June 2011 | 2.7% | £218,658 |
| June 2010 | 13% | £212,874 |
| June 2009 | -15.3% | £188,443 |
| June 2008 | -0.7% | £222,366 |
| June 2007 | 0% | £223,937 |
Rental Market Trends
The current average rental value in the postcode is £1,368.
The SL4 1SY Rental Market has increased by 19.6% over the last 10 years.
| Period | Year on Year | Average Price |
|---|---|---|
| June 2026 | 2.1% | £1,368pcm |
| June 2025 | 0.2% | £1,340pcm |
| June 2024 | 7% | £1,337pcm |
| June 2023 | 8.5% | £1,249pcm |
| June 2022 | 4.4% | £1,151pcm |
| June 2021 | 0.8% | £1,103pcm |
| June 2020 | -0.4% | £1,093pcm |
| June 2019 | -0.1% | £1,097pcm |
| June 2018 | -0.6% | £1,099pcm |
| June 2017 | -3.3% | £1,106pcm |
| June 2016 | 0.1% | £1,143pcm |
| June 2015 | 3% | £1,143pcm |
| June 2014 | 4% | £1,109pcm |
| June 2013 | 0.8% | £1,066pcm |
| June 2012 | -0.1% | £1,058pcm |
| June 2011 | 8.5% | £1,059pcm |
| June 2010 | 3.1% | £976pcm |
| June 2009 | -10.2% | £947pcm |
| June 2008 | -0.2% | £1,054pcm |
| June 2007 | 0% | £1,056pcm |
Sales History
The last sale was on 12th May 2026 for £360,000 and since then the market in the area has increased by 0.4%. The postcode has had a total of 37 sales since 1995.
SL4 1SY has seen 5 sales in the last three years and 2 sales in the last twelve months.
- Sold May 2026£360,000 | 2 Bed Flat30, Mountbatten Square, Windsor, SL4 1SY30, Mountbatten Square, Windsor, SL4 1SY
- Sold Mar 2026£220,000 | 2 Bed Flat53, Mountbatten Square, Windsor, SL4 1SY53, Mountbatten Square, Windsor, SL4 1SY
- Sold Apr 2024£200,000 | 2 Bed Flat52, Mountbatten Square, Windsor, SL4 1SY52, Mountbatten Square, Windsor, SL4 1SY
- Sold Jan 2024£205,000 | 2 Bed Flat53, Mountbatten Square, Windsor, SL4 1SY53, Mountbatten Square, Windsor, SL4 1SY
- Sold Jan 2024£255,000 | 2 Bed Flat41, Mountbatten Square, Windsor, SL4 1SY41, Mountbatten Square, Windsor, SL4 1SY
Nearby Postcodes
SL4 1SY is the 1071st largest and the 82nd most expensive postcode out of the 1,256 postcodes in the SL4 area.
- SL4 1SX, Mountbatten Square, Windsor, SL4SL4 1SX28 Addresses|44 m away
- SL4 1SR, Ward Royal, Windsor, SL4SL4 1SR24 Addresses|44 m away
- SL4 1TA, Bowes Lyon Close, Windsor, SL4SL4 1TA45 Addresses|57 m away
- SL4 1SZ, Mountbatten Square, Windsor, SL4SL4 1SZ24 Addresses|73 m away
- SL4 1ST, Athlone Square, Windsor, SL4SL4 1ST28 Addresses|80 m away
Property Types
- 1 modern flat built after 1980
- 21 mid-century flats built between 1936 and 1979
- 1 flat of an unknown age
- 9 other addresses of unknown type
- modern flat (1)
- mid-century flat (21)
- flat (1)
- Unknown (9)
Energy Efficiency
- Energy Performance Certificate (EPC) surveys conducted for 22 properties.
- The most common rating is C.
- A (0)
- E (2)
- B (0)
- F (0)
- C (10)
- G (0)
- D (10)
- No EPC (10)
Top 3 Most Expensive Sales
- Sold May 2026£360,000 | 2 Bed Flat30, Mountbatten Square, Windsor, SL4 1SY30, Mountbatten Square, Windsor, SL4 1SY
- Sold Aug 2016£345,000 | 2 Bed Flat46, Mountbatten Square, Windsor, SL4 1SY46, Mountbatten Square, Windsor, SL4 1SY
- Sold Sep 2017£345,000 | 2 Bed Flat14, Mountbatten Square, Windsor, SL4 1SX14, Mountbatten Square, Windsor, SL4 1SX
Schools Nearby
- Trinity St Stephen CofE Aided First School400 m away
- Eton Porny CofE First School900 m away
- The Queen Anne Royal Free CofE Controlled First School900 m away
- The Windsor Boys' School600 m away
- Windsor Girls' School1.6 km away
- Churchmead Church of England (VA) School2.3 km away
More reading links
Public Transport Nearby
The closest station to SL4 1SY is Windsor & Eton Central station, which is 300 metres away.
- Windsor & Eton Central|300 m away
- Windsor & Eton Riverside|600 m away
- Datchet|2.3 km away
- Slough|3.7 km away
