SO18 postcode area house prices

SO18 has an average sold price of £175,605 across 21,116 HM Land Registry transactions covering 820 postcodes. The largest town grouping is Southampton.

Updated October 2026Records through August 2026HM Land Registry31+ million records

SO18 at a glance

SO18 postcode area averages £175,605 across 21,116 completed sales covering 820 postcodes. Check the median, sample depth and nearby postcodes before using the average as a market signal.

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Average £175,605 · Median £160,000 · 21,116 transactions · +21.4% growth · 820 postcodes

Data source: HM Land Registry; Updated October 2026
Sample quality: High transaction depth; 21,116 sales across 820 postcodes
Median check: £160,000; Mean and median differ — inspect local mix
Trend signal: +21.4%; The five-year price movement is +21.4%.
Coverage: 820 postcodes; Largest town: Southampton

SO18 Postcode Area Overview

The SO18 postcode area averages £175,605 across 21,116 registered sales — below the national average of £400,016 by -56.1%. The median price across constituent postcodes is £160,000, suggesting higher-value sales pull the mean upward. 820 postcodes cover this area, with data sourced from HM Land Registry Price Paid Records. The principal town is Southampton, which accounts for the largest share of transactions in this postcode area. The five-year price movement is +21.4%, in line with national growth.

Postcodes in SO18

SO18 3NF£129,992 average233 sales SO18 1UD£74,304 average154 sales SO18 3LZ£119,228 average151 sales SO18 1HJ£168,391 average148 sales SO18 6TX£75,452 average147 sales SO18 3QB£108,960 average146 sales SO18 1GS£128,870 average143 sales SO18 3LY£130,255 average141 sales SO18 1UG£114,563 average140 sales SO18 3NG£121,939 average139 sales SO18 2PA£142,147 average126 sales SO18 3QL£118,351 average125 sales SO18 3QX£208,419 average125 sales SO18 3LS£130,323 average117 sales SO18 3JY£111,589 average109 sales SO18 1AP£116,581 average108 sales SO18 3LW£92,269 average100 sales SO18 1ER£434,950 average98 sales SO18 3LX£103,539 average93 sales SO18 5TW£71,932 average92 sales SO18 4SW£94,505 average91 sales SO18 3NQ£129,721 average88 sales SO18 1GT£132,471 average86 sales SO18 3PS£371,776 average86 sales SO18 5RD£147,666 average86 sales SO18 1JY£194,487 average84 sales SO18 6BP£168,922 average80 sales SO18 1JB£139,104 average79 sales SO18 3QD£171,819 average79 sales SO18 1NJ£193,883 average78 sales SO18 1UH£148,154 average78 sales SO18 4FG£153,116 average78 sales SO18 4ST£111,860 average78 sales SO18 6AP£155,060 average78 sales SO18 4TQ£114,925 average77 sales SO18 1GJ£179,407 average74 sales SO18 1QA£197,249 average74 sales SO18 3NA£192,857 average74 sales SO18 1HP£93,257 average73 sales SO18 1NY£203,141 average72 sales SO18 3QA£122,950 average72 sales SO18 4GP£131,769 average72 sales SO18 3NH£207,961 average71 sales SO18 4QH£88,153 average71 sales SO18 1QP£193,987 average70 sales SO18 2HQ£165,632 average70 sales SO18 1DZ£98,456 average69 sales SO18 5SU£137,814 average69 sales SO18 2PE£149,773 average68 sales SO18 3LE£83,071 average67 sales SO18 6AQ£169,604 average66 sales SO18 3LQ£118,641 average64 sales SO18 5QH£168,657 average64 sales SO18 2RD£176,515 average63 sales SO18 3LD£129,017 average63 sales SO18 3QW£205,935 average63 sales SO18 4RX£169,344 average63 sales SO18 6BL£155,332 average63 sales SO18 5EQ£127,816 average62 sales SO18 6RW£81,308 average62 sales SO18 6TF£209,251 average62 sales SO18 1BE£167,043 average61 sales SO18 1NL£188,823 average61 sales SO18 1QU£179,726 average61 sales SO18 3AG£309,762 average61 sales SO18 3DA£259,493 average61 sales SO18 5QX£185,830 average61 sales SO18 1EP£156,504 average60 sales SO18 1FU£295,875 average60 sales SO18 3AD£326,421 average60 sales SO18 5AE£165,684 average60 sales SO18 6TG£211,402 average60 sales SO18 1BF£77,030 average59 sales SO18 2PB£177,808 average59 sales SO18 3NB£93,861 average59 sales SO18 3RR£150,487 average59 sales SO18 4SZ£157,836 average59 sales SO18 6PA£154,057 average59 sales SO18 1DU£122,904 average58 sales SO18 1EH£166,715 average57 sales

Compare postcodes in SO18

Use the location comparison tool to put SO18 postcodes beside other postcode areas, towns or districts before narrowing your shortlist.

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Property valuation guide

Estimate a property value in the SO18 area

Professional valuers use recent sold prices as comparable evidence. In the SO18 area, the median sold price is £160,000 and the average is £175,605, based on 21,116 HM Land Registry transactions. Over five years, prices have moved +21.4%, which affects how comparables from earlier years should be weighted.

Typical comparable range: £136,000–£184,000(±15% from median)

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.

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Frequently asked questions

What is the average sold price in the SO18 postcode area?

The average sold price in SO18 is £175,605, based on 21,116 HM Land Registry transactions across 820 postcodes.

How does SO18 compare to the national average?

SO18 is -56.1% below 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 SO18 area cover?

The SO18 postcode area covers 820 individual postcodes with 21,116 registered sales. The largest town grouping is Southampton.

More about SO18

Southampton town Browse districts Market reports Methodology Compare locations Area guide: SO18

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.