SL9 postcode area house prices
SL9 has an average sold price of £646,393 across 11,579 HM Land Registry transactions covering 784 postcodes. The largest town grouping is Gerrards Cross.
SL9 at a glance
SL9 postcode area averages £646,393 across 11,579 completed sales covering 784 postcodes. Check the median, sample depth and nearby postcodes before using the average as a market signal.
Average £646,393 · Median £570,000 · 11,579 transactions · +20.9% growth · 784 postcodes
- Data source
- HM Land Registry
- Updated October 2026
- Sample quality
- High transaction depth
- 11,579 sales across 784 postcodes
- Median check
- £570,000
- Mean and median differ — inspect local mix
- Trend signal
- +20.9%
- The five-year price movement is +20.9%.
- Coverage
- 784 postcodes
- Largest town: Gerrards Cross
SL9 Postcode Area Overview
Postcodes in SL9
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Use the location comparison tool to put SL9 postcodes beside other postcode areas, towns or districts before narrowing your shortlist.
Property valuation guide
Estimate a property value in the SL9 area
Professional valuers use recent sold prices as comparable evidence. In the SL9 area, the median sold price is £570,000 and the average is £646,393, based on 11,579 HM Land Registry transactions. Over five years, prices have moved +20.9%, which affects how comparables from earlier years should be weighted.
These are historical completed-sale prices — not a formal valuation, asking price or investment advice. Use them to sense-check an asking price or set expectations before instructing a surveyor.
Frequently asked questions
What is the average sold price in the SL9 postcode area?
The average sold price in SL9 is £646,393, based on 11,579 HM Land Registry transactions across 784 postcodes.
How does SL9 compare to the national average?
SL9 is +61.6% above the England and Wales national average of £400,016.
Are these figures valuations or asking prices?
No. These are historical completed sale prices from HM Land Registry Price Paid Data. They are not current valuations, asking prices or investment advice.
How many postcodes does the SL9 area cover?
The SL9 postcode area covers 784 individual postcodes with 11,579 registered sales. The largest town grouping is Gerrards Cross.
More about SL9
About this data
All sold price figures on this page come from HM Land Registry Price Paid Data for England and Wales, published under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right. These are historical completed sale prices — they are not current valuations, not forecasts and not investment advice. Past sale prices do not guarantee future values. Always seek independent professional advice before making property or financial decisions. Read the full methodology for details on data cleaning, grouping and limitations.