SL1 house prices and areas
SL1 covers Slough and Burnham in London (Berkshire, Buckinghamshire). 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.
133 sales
238 sales
220 sales
283 sales
Sales by year
| Year | Sales | Median |
|---|---|---|
| 2025 | 594 | £397,181 |
| 2026 (so far) | 280 | £400,000 |
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
4.8% of SL1 sales were new builds and 33.6% were leasehold. Most sales here were freehold, which usually means houses.
Areas in SL1
Nearby postcodes
Questions about SL1
What is the average house price in SL1?
The median sale price in SL1 was £399,975 across 874 recorded sales from January 2025 to September 2026 (HM Land Registry). Half of sales were between £277,400 and £492,500.
Which areas are in the SL1 postcode?
Boroughly's area guides in SL1 cover Slough and Burnham. Postcode districts don't follow neighbourhood names exactly, so a street can sit in SL1 but feel part of a neighbouring area.
What type of property sells most in SL1?
Flats were the most common sale (283 of 874). Flats had the lowest median, at £230,000. 33.6% of sales were leasehold and 4.8% were new builds.