House prices in KT12 (Hersham)
Price per square metre data and charts to help you understand the housing market in KT12 - stats were last calculated on 11 April 2026.
Defining 'KT12'
This analysis is limited to properties whose postcode starts with "KT12", this is also called the postcode district. There are no official postcode district names so I've just labelled it KT12, Hersham. It is shown in red on the map below.
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You can click on the map above to change to a neighbouring district, or you can use the search form below.
Price per square metre
Knowing the average house price in KT12 is not much use. However, knowing average price per square metre can be quite useful. Price per sqm allows some comparison between properties of different size. We define price per square metre as the sold price divided by the internal area of a property:
£ per sqm = price ÷ internal area
For example in February 2026, 27, Thrupps Avenue, Hersham, KT12 4NA sold for £490,000. Given the internal area of 60 square metres recorded on the EPC, the price per sqm is £490,000 ÷ 60 sqm = £8,166.
England & Wales have been officially metric since 1965. However house price per square foot is prefered by some estate agents and those of sufficiently advanced age ;-). You can change your prefered units from square meters to square feet for all the graphs and charts on KT12 and elsewhere. Just visit the My Account page and look for the m2 to ft2 toggle switch. Alternatively just multiply everything by 10, move a decimal place to go from sqm to sqft and you'll be close enough as 1 sqm = 10.76391 sqft.
Distribution of £ per sqm for houses vs flats in KT12
The chart above is called a histogram, it helps you see the distribution of house price per sqm in KT12 To make this chart we put all the sales data into a series of £ per sqm 'buckets' (e.g. £5,857 to £6,102, £6,102 to £6,346, £6,346 to £6,591 etc...) we then count the number of sales with within in each bucket and plot the results. The histogram is based on 1,046 sales that took place in KT12, in the last 24 months.
Generate a custom histogram like the one above but based on your own criteria.
You can see the spread of prices above. This is because although internal area is a key factor in determining valuation, it is not the only factor. Many factors other than size affect desirability; these factors could be condition, aspect, garden size, negotiating power of the vendor etc.
The spread of prices will give you a feel of the typical range to expect in KT12, Hersham. Notably, only 25% of properties that sold recently were valued at more than £6,710 sqm. For anything to be valued more than this means it has to be more desireable than the clear majority of KT12 homes.
Box plot of £ per sqm for KT12
Tip: click on the chart to see the values.
The chart above is called a boxplot (or a box-and-whisker plot). Box plots, like histograms, are used to graphically represent the distribution of data, showing the central tendency, spread of the distribution. In the context of £ per square metre property price distributions, box plots represent the variation in property prices within a geographic area e.g. Hersham. The chart above shows a boxplot for 'KT12' as well as the 'KT' postcode area.
Property price map for Hersham
Have a look at the interactive price map I created for myself. Use it to explore house prices in 'Hersham' all the way down to individual property plots.
Will KT12 house prices drop in 2025?
House prices in KT12 grew 0.0% in the last year, -3.1% after inflation. Whether or not this trend will continue depends on many factors, such as wage growth, net migration, interest rates and the level of house building. No one can predict these things with certainty however we can plot the historic trends in house prices in KT12 (Hersham) compared with the wider postcode area 'KT'.You can extrapolate from this based on your own views.
House price index for KT12
Tip: click on the legend items to show/hide different lines
Download house price index as CSV (premium users only).
The chart above shows changes in 'KT12' property prices over the last 20 years. The index is calculated from the average price paid per sqm for property in KT12 and is set to 100 in 2004. The chart compares trends for KT12, Hersham against those of the broader postcode area 'KT'. What is more interesting is to look at the difference between flats and houses, even those in the same area follow a very different trend, to get a robust enough sample size to see this we need to zoom out and look at house price trends for the entire Elmbridge local authority.
The dashed lines show nominal house price changes, the solid lines show the same data adjusted for inflation. Economists call this the 'real' price change. You have to take inflation into account when comparing prices over time. It's calculated using the formula:
Real Rate of Return = (1 + Nominal Rate) ÷ (1 + Inflation Rate) – 1In this formula, the nominal rate is the rate of change before any adjustments, and the inflation rate is taken from the Consumer Price Index. The real rate of return is a more accurate measure of change in value, because £1 today does not have the same buying power as £1 in the past. For example, if a savings account pays an interest rate of 3% per year and the inflation rate is 5% per year, the real rate of return is -2%. This means that the investment's value is shrinking by 2% each year.
Historic returns for KT12
| KT area | KT12 district | |||
|---|---|---|---|---|
| Nominal | Real | Nominal | Real | |
| 20 yr per annum | 3.3% | 0.5% | 3.4% | 0.6% |
| 20 yr total | 91.5% | 9.9% | 96.7% | 12.9% |
| 10 yr per annum | 1.1% | -2.2% | 1.3% | -2.0% |
| 10 yr total | 11.4% | -20.1% | 13.6% | -18.6% |
| 5 yr per annum | 0.9% | -3.9% | 1.1% | -3.7% |
| 5 yr total | 4.5% | -18.1% | 5.7% | -17.2% |
| 1 yr per annum | -0.4% | -3.5% | 0.0% | -3.1% |
| 1 yr total | -0.4% | -3.5% | 0.0% | -3.1% |
This table complements the house price index chart above, presenting the data in a more detailed format. It breaks down the information into 20-year, 10-year, 5-year, and 1-year periods, further categorized by property type. For each period, we display both a per annum rate of change and a total rate of change.
The total rate of change represents the overall change over the entire period. The formula for total return is:
Total return = (Index at end of period ÷ Index at start of period) - 1
The per annum rate of change is the annualized rate of change over the period. This is equivalent to the annual bank savings rate you would need to achieve the same total return over the given period. This annualized return is also known as the Compound Annual Growth Rate (CAGR). The formula for CAGR is:
CAGR = (1 + Total return) ^ (1 ÷ Number of years) - 1
Some specific examples:
- Over the past 20 years, KT area have seen a 0.5% annual change when adjusted for inflation. This translates to a total change of 9.9% in real terms.
- Over the past 5 years, KT area have seen a -3.9% annual change when adjusted for inflation. This translates to a total change of -18.1% in real terms.
Most recent KT12 sales
For the most recent sales activity, rather than a summarized average, it is better to see the underlying data. This is shown in the chart below, where blue dots represent individual sales, click on them to see details. If there is an obvious trend you should be able to spot it here amid the noise from outliers.
Tip: hover over dots to see details
Street level data
| Street | Avg size | Avg £sqm | Recent sales |
|---|---|---|---|
| Bridge Street, , KT12 1A | 66 sqm | £4,500 | 36 |
| Shaw Drive, , KT12 2L | 55 sqm | £6,316 | 29 |
| Churchfield Road, , KT12 2E | 56 sqm | £5,404 | 26 |
| Queens Road, , KT12 5L | 109 sqm | £5,501 | 23 |
| Albany Road, , KT12 5Q | 89 sqm | £6,702 | 22 |
| Cottimore Lane, , KT12 2B | 86 sqm | £6,133 | 20 |
| Molesey Road, , KT12 4R | 76 sqm | £5,832 | 20 |
| Rydens Road, , KT12 3A | 112 sqm | £5,933 | 20 |
Search for your street here.
Nearby geographies
The table below shows how 'KT12' compares to the other postcode districts nearby 'KT12'.
| District | Lower quartile | Median | Upper quartile | Sales in last 2yr |
|---|---|---|---|---|
| TW17 Shepperton | £4,900 sqm | £5,580 sqm | £6,290 sqm | 372 |
| TW16 Sunbury-On-Thames | £4,730 sqm | £5,460 sqm | £6,160 sqm | 534 |
| KT9 Chessington | £5,060 sqm | £5,740 sqm | £6,410 sqm | 535 |
| KT8 West Molesey | £5,400 sqm | £6,360 sqm | £7,420 sqm | 542 |
| KT7 Thames Ditton | £6,150 sqm | £7,000 sqm | £8,130 sqm | 338 |
| KT6 Surbiton | £5,870 sqm | £6,670 sqm | £7,500 sqm | 962 |
| KT5 Surbiton | £5,920 sqm | £6,650 sqm | £7,480 sqm | 484 |
| KT4 Worcester Park | £5,430 sqm | £6,200 sqm | £6,940 sqm | 704 |
| KT3 New Malden | £5,870 sqm | £6,670 sqm | £7,440 sqm | 830 |
| KT24 East Horsley | £5,800 sqm | £6,500 sqm | £7,620 sqm | 230 |
Raw data
Our analysis of KT12 is derived from what is essentially a big table of sold prices from Land Registry with added property size information. Below are three rows from this table to give you an idea.
| Address | Paid | sqm | £/sqm |
|---|---|---|---|
| 27, Thrupps Avenue, | £490,000
Feb-2026
|
60 | 8,166 |
| 2 Courtlands, Manor Rd, | £305,000
Feb-2026
|
84 | 3,630 |
| 65, Pleasant Pl, | £300,000
Feb-2026
|
66 | 4,545 |
About
I created HouseMetric because I wanted to see this data and analysis myself, I also wanted to teach myself to build a website. Please give me feedback or spread the word about it. I'm constantly tinkering and adding more stuff to it.