SG18 postcode area house prices

SG18 has an average sold price of £242,758 across 19,006 HM Land Registry transactions covering 660 postcodes. The largest town grouping is Biggleswade.

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

SG18 at a glance

SG18 postcode area averages £242,758 across 19,006 completed sales covering 660 postcodes. Check the median, sample depth and nearby postcodes before using the average as a market signal.

Check asking price

Average £242,758 · Median £220,000 · 19,006 transactions · +27.7% growth · 660 postcodes

Data source: HM Land Registry; Updated October 2026
Sample quality: High transaction depth; 19,006 sales across 660 postcodes
Median check: £220,000; Mean and median differ — inspect local mix
Trend signal: +27.7%; The five-year price movement is +27.7%.
Coverage: 660 postcodes; Largest town: Biggleswade

SG18 Postcode Area Overview

The SG18 postcode area averages £242,758 across 19,006 registered sales — below the national average of £400,016 by -39.3%. The median price across constituent postcodes is £220,000, suggesting higher-value sales pull the mean upward. 660 postcodes cover this area, with data sourced from HM Land Registry Price Paid Records. The principal town is Biggleswade, which accounts for the largest share of transactions in this postcode area. The five-year price movement is +27.7%, in line with national growth.

Postcodes in SG18

SG18 8QQ£119,573 average246 sales SG18 8ST£105,992 average195 sales SG18 8HW£117,042 average188 sales SG18 8BP£159,913 average184 sales SG18 8GA£282,465 average149 sales SG18 0LS£158,524 average147 sales SG18 8WD£238,194 average139 sales SG18 8HR£95,754 average135 sales SG18 8DZ£160,875 average133 sales SG18 0JT£121,078 average129 sales SG18 8QD£113,984 average120 sales SG18 8BH£205,958 average118 sales SG18 8FJ£252,911 average115 sales SG18 0BT£136,091 average112 sales SG18 0PX£200,708 average106 sales SG18 8BJ£235,089 average105 sales SG18 8BL£144,639 average103 sales SG18 8WL£181,552 average103 sales SG18 8SY£174,911 average102 sales SG18 8DJ£198,622 average100 sales SG18 8FB£260,152 average100 sales SG18 0JS£136,311 average99 sales SG18 8HD£238,867 average99 sales SG18 0FE£170,871 average97 sales SG18 0PZ£356,745 average95 sales SG18 0AL£119,254 average94 sales SG18 0NF£101,859 average93 sales SG18 8TU£216,613 average91 sales SG18 9BU£300,876 average90 sales SG18 9NG£296,300 average88 sales SG18 0JZ£144,991 average86 sales SG18 0RE£276,504 average86 sales SG18 9RU£240,010 average86 sales SG18 8TR£137,720 average85 sales SG18 0GY£216,916 average84 sales SG18 8BG£134,007 average82 sales SG18 8DR£88,702 average80 sales SG18 8GW£290,258 average78 sales SG18 8QE£117,406 average78 sales SG18 8SR£230,768 average77 sales SG18 8AG£140,727 average76 sales SG18 8QJ£99,092 average75 sales SG18 8LT£153,760 average74 sales SG18 0FU£351,747 average73 sales SG18 0RF£402,321 average72 sales SG18 9PT£246,014 average72 sales SG18 8BE£155,550 average71 sales SG18 9RY£253,998 average70 sales SG18 0BZ£143,365 average69 sales SG18 0NE£132,442 average69 sales SG18 8TT£240,229 average69 sales SG18 0BQ£138,373 average68 sales SG18 8PF£217,689 average68 sales SG18 9QA£242,129 average68 sales SG18 0AG£204,154 average67 sales SG18 0AW£355,424 average67 sales SG18 8SP£223,871 average67 sales SG18 8TP£218,748 average67 sales SG18 8WB£170,037 average67 sales SG18 9RW£194,631 average67 sales SG18 0DB£164,573 average66 sales SG18 8FD£234,354 average66 sales SG18 8YQ£546,051 average66 sales SG18 9QT£271,436 average66 sales SG18 8GZ£340,080 average65 sales SG18 8LG£99,057 average65 sales SG18 8SL£253,787 average65 sales SG18 8AT£253,265 average64 sales SG18 8BT£222,587 average64 sales SG18 8HE£151,092 average63 sales SG18 8HG£104,504 average62 sales SG18 8HQ£115,568 average62 sales SG18 8JA£109,746 average62 sales SG18 8JE£116,696 average62 sales SG18 0DY£149,831 average61 sales SG18 9DL£241,404 average61 sales SG18 0EG£215,848 average60 sales SG18 8JQ£333,650 average60 sales SG18 8WH£216,084 average60 sales SG18 9ND£136,524 average60 sales

Compare postcodes in SG18

Use the location comparison tool to put SG18 postcodes beside other postcode areas, towns or districts before narrowing your shortlist.

Compare locations Check asking price How we calculate prices

Property valuation guide

Estimate a property value in the SG18 area

Professional valuers use recent sold prices as comparable evidence. In the SG18 area, the median sold price is £220,000 and the average is £242,758, based on 19,006 HM Land Registry transactions. Over five years, prices have moved +27.7%, which affects how comparables from earlier years should be weighted.

Typical comparable range: £187,000–£253,000(±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.

Check an asking price against local evidence

Frequently asked questions

What is the average sold price in the SG18 postcode area?

The average sold price in SG18 is £242,758, based on 19,006 HM Land Registry transactions across 660 postcodes.

How does SG18 compare to the national average?

SG18 is -39.3% 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 SG18 area cover?

The SG18 postcode area covers 660 individual postcodes with 19,006 registered sales. The largest town grouping is Biggleswade.

More about SG18

Biggleswade town Browse districts Market reports Methodology Compare locations Area guide: SG18

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.