What is the average house price in the SL9 postcode district?

The median sold price in SL9 is £835,000, based on 237 transactions recorded by HM Land Registry in the 12 months ending April 2026.

Is SL9 cheap or expensive compared with the UK average?

The Gera District Price Index (GDPI) for SL9 is 289 (UK outcode median = 100). SL9 is above-average: its median of £835,000 is 189% above the UK outcode median of £288,675 (HM Land Registry PPD, April 2026).

How much does a detached house cost in SL9?

The median price for a detached house in SL9 is £1,050,000, according to HM Land Registry Price Paid Data for the 12 months ending April 2026.

How much does a flat cost in SL9?

The median price for a flat or maisonette in SL9 is £415,000, based on HM Land Registry transaction data for the 12 months ending April 2026.

What is the typical price for a terraced house in SL9?

The median price for a terraced house in SL9 is £705,000 (HM Land Registry PPD, 12 months to April 2026).

How much does a semi-detached house cost in SL9?

The median price for a semi-detached house in SL9 is £735,000 (HM Land Registry PPD, 12 months to April 2026).

What is the Gera District Price Index for SL9?

The Gera District Price Index (GDPI) for SL9 is 289, where 100 equals the UK outcode median (£288,675). The GDPI allows direct comparison between postcode districts regardless of geography. Methodology: https://gerarent.com/methodology/gera-district-price-index.

House prices in the SL9 postcode district

Based on 237 Land Registry transactions · 12 months ending April 2026

What is the median house price in SL9?

As of April 2026, the median sold price in the SL9 postcode district is £835,000, based on 237 Land Registry transactions in the 12 months ending April 2026. The Gera District Price Index (GDPI) for SL9 is 289 — 189% above the UK outcode median of £288,675. Detached homes sold for a median of £1,050,000.

Source:HM Land Registry — Price Paid Data·As of April 2026 · updated monthly (last: 2026-06-19)

289GDPI

Gera District Price Index — SL9

289 / 100 where 100 = UK outcode median (£288,675). SL9 is 189% above the national outcode median.

How is the GDPI computed?

Median sold prices in SL9

Overall median: £835,000
vs UK outcode median: +189%
Transactions (12m): 237

By property type

Median sold price by property type in SL9 (HM Land Registry PPD, April 2026)
Property type	Median price	vs overall
Detached	£1,050,000	+26%
Semi-detached	£735,000	-12%
Terraced	£705,000	-16%
Flat / maisonette	£415,000	-50%

Property type medians are shown only where ≥3 transactions were recorded. All figures: HM Land Registry Price Paid Data, 12 months ending April 2026.

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Top 12 postcode districts with median ≤ £835,000, ordered by Gera District Price Index (highest = best value relative to national median):

Outcode	Median price	GDPI	Transactions
SL9	£835,000	289	237
SO42	£830,000	288	61
HP8	£818,500	284	75
KT11	£815,000	282	221
SW5	£805,000	279	114
W4	£800,000	277	471
GU5	£797,500	276	100
TW10	£780,000	270	191
W13	£775,000	268	315
AL5	£765,137	265	355
W2	£762,500	264	396
EC1V	£760,000	263	99

Medians are from HM Land Registry Price Paid Data — rolling 12 months to June 2026. GDPI = Gera District Price Index (UK outcode median = 100). Your inputs are used only in your browser.

SL9 house prices — questions and answers

What is the average house price in the SL9 postcode district?: The median sold price in SL9 is £835,000, based on 237 transactions recorded by HM Land Registry in the 12 months ending April 2026.
Is SL9 cheap or expensive compared with the UK average?: The Gera District Price Index (GDPI) for SL9 is 289 (UK outcode median = 100). SL9 is above-average: its median of £835,000 is 189% above the UK outcode median of £288,675 (HM Land Registry PPD, April 2026).
How much does a detached house cost in SL9?: The median price for a detached house in SL9 is £1,050,000, according to HM Land Registry Price Paid Data for the 12 months ending April 2026.
How much does a flat cost in SL9?: The median price for a flat or maisonette in SL9 is £415,000, based on HM Land Registry transaction data for the 12 months ending April 2026.
What is the typical price for a terraced house in SL9?: The median price for a terraced house in SL9 is £705,000 (HM Land Registry PPD, 12 months to April 2026).
How much does a semi-detached house cost in SL9?: The median price for a semi-detached house in SL9 is £735,000 (HM Land Registry PPD, 12 months to April 2026).
What is the Gera District Price Index for SL9?: The Gera District Price Index (GDPI) for SL9 is 289, where 100 equals the UK outcode median (£288,675). The GDPI allows direct comparison between postcode districts regardless of geography. Methodology: https://gerarent.com/methodology/gera-district-price-index.

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All median prices are computed by GeraRent from the HM Land Registry — Price Paid Data — rolling 12 months ending April 2026. Minimum 5 transactions per outcode; type medians require ≥3. The Gera District Price Index (GDPI) is a Gera proprietary computation — methodology at https://gerarent.com/methodology/gera-district-price-index. Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.