SL4 house prices and areas
SL4 covers Windsor in London (Berkshire). Here is what homes actually sold for: every standard sale HM Land Registry recorded from January 2025 to September 2026.
Prices by property type
Medians are shown where there were at least 10 sales of that type.
142 sales
211 sales
259 sales
224 sales
Sales by year
| Year | Sales | Median |
|---|---|---|
| 2025 | 588 | £517,250 |
| 2026 (so far) | 248 | £510,000 |
A part-year and a small mix shift (say, more flats sold this year) can move a median without any change in what homes are worth, so treat year-to-year differences with care.
New builds and leasehold
3.7% of SL4 sales were new builds and 27.5% were leasehold. Most sales here were freehold, which usually means houses.
Areas in SL4
Nearby postcodes
Questions about SL4
What is the average house price in SL4?
The median sale price in SL4 was £515,000 across 836 recorded sales from January 2025 to September 2026 (HM Land Registry). Half of sales were between £400,000 and £695,000.
Which areas are in the SL4 postcode?
Boroughly's area guides in SL4 cover Windsor. Postcode districts don't follow neighbourhood names exactly, so a street can sit in SL4 but feel part of a neighbouring area.
What type of property sells most in SL4?
Terraced homes were the most common sale (259 of 836). Flats had the lowest median, at £315,000. 27.5% of sales were leasehold and 3.7% were new builds.