House prices in 'BS30 9', Longwell Green
This article reveals price per square metre data and various charts to help you understand current housing market in 'BS30 9' (Longwell Green)  statistics were last calculated on 01 November 2024.
Defining 'BS30 9'
This analysis is limited to properties whose postcode starts with "BS30 9", this is also called the postcode sector. There are no official postcode sector names so I've just labelled it BS30 9, Longwell Green. It is shown in red on the map below.
Want to change geography?
You can click on the map above to change to a neighbouring sector, or you can use the search form below.
Price per square metre
Knowing the average house price in BS30 9 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 September 2024, 42, Hoopers Walk, Longwell Green, BS30 9DZ sold for £231,000. Given the internal area of 59 square metres recorded on the EPC, the price per sqm is £231,000 ÷ 59 sqm = £3,915.
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 ;). It is a huge pain to code the automatic conversion for square meters to square feet for all the graphs and charts on BS30 9 and elsewhere. All the conditionals turn my tidy code for into spaghetti. I will get around to it at some point, but for now you can just divide everything by 10 in your head, move a decimal place and you'll be close enough. If you want to be more precise 1 sqm = 10.76391 sqft.
Distribution of £ per sqm for 'BS30 9' vs 'BS30'
The chart above is called a histogram, it helps you see the distribution of house price per sqm in BS30 9 To make this chart we put all the sales data into a series of £ per sqm 'buckets' (e.g. £3,800 to £4,000, £4,000 to £4,200, £4,200 to £4,400 etc...) we then count the number of sales with within in each bucket and plot the results. The histogram is based on 175 sales that took place in BS30 9, Longwell Green 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 BS30 9, Longwell Green. Notably, only 25% of properties that sold recently were valued at more than £4,510 sqm. For anything to be valued more than this means it has to be more desireable than the clear majority of BS30 9 homes.
Box plot of £ per sqm for BS30 9
Tip: click on the chart to see the values.
The chart above is called a boxplot (or a boxandwhisker 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. Longwell Green. The chart above shows a boxplot for 'BS30 9' as well as the 'BS30' postcode district.
Property price map for Longwell Green
Have a look at the interactive price map I created for myself. Use it to explore 'BS30 9' house prices all the way down to individual property plots.
Longwell Green house price forecasting
I cannot tell what house prices will do in the future and don't believe anyone who says they can. However we can plot price trends, I have done this in the chart below for BS30 9 (Longwell Green) compared with the wider postcode district of BS30. You can extrapolate from this based on your own views on future interest rates, inflation and other factors.
House price index for BS30 9
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 'BS30 9' property prices over the last 20 years. The index is calculated from the average price paid per sqm for property in BS30 9 and is set to 100 in 2004. I'm comparing the trends for BS30 9,Longwell Green with the wider postcode district of BS30 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 South Gloucestershire 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 BS30 9
BS30 9 sector  BS30 district  

Nominal  Real  Nominal  Real  
20 yr per annum  3.5%  0.8%  3.6%  1.0% 
20 yr total  98.1%  17.3%  104.6%  21.2% 
10 yr per annum  4.2%  1.4%  4.6%  1.8% 
10 yr total  50.8%  14.5%  56.8%  19.0% 
5 yr per annum  3.9%  0.2%  4.3%  0.2% 
5 yr total  21.1%  0.9%  23.3%  0.9% 
1 yr per annum  4.4%  0.2%  5.2%  1.0% 
1 yr total  4.4%  0.2%  5.2%  1.0% 
This table complements the house price index chart above, presenting the data in a more detailed format. It breaks down the information into 20year, 10year, 5year, and 1year 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, BS30 district have seen a 1.0% annual change when adjusted for inflation. This translates to a total change of 21.2% in real terms.
 Over the past 5 years, BS30 9 sector have seen a 0.2% annual change when adjusted for inflation. This translates to a total change of 0.9% in real terms.
Most recent BS30 9 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 

Hoopers Walk, Longwell Green, BS30 9D  87 sqm  £3,437  21 
Bath Road, Longwell Green, BS30 9D  116 sqm  £3,649  20 
Cloverdale Drive, Longwell Green, BS30 9U  46 sqm  £2,665  17 
High Street, Longwell Green, BS30 9T  114 sqm  £3,342  16 
Pearsall Road, Longwell Green, BS30 9B  90 sqm  £4,410  14 
West Street, Longwell Green, BS30 9Q  101 sqm  £3,688  14 
Shellards Road, Longwell Green, BS30 9D  96 sqm  £3,685  12 
Bath Road, Longwell Green, BS30 9B  69 sqm  £4,197  11 
Search for your street here.
Nearby geographies
The table below shows how 'BS30 9' compares to the other postcode sectors in BS30.
Sector  Lower quartile  Median  Upper quartile  Sales in last 2yr 

BS31 2 Keynsham  £3,520 sqm  £3,950 sqm  £4,670 sqm  270 
BS30 9 Longwell Green  £3,580 sqm  £4,080 sqm  £4,510 sqm  175 
BS30 8 Warmley  £3,310 sqm  £3,960 sqm  £4,490 sqm  196 
BS30 7 Barrs Court  £4,400 sqm  £4,650 sqm  £4,980 sqm  60 
BS30 6 Bitton  £3,490 sqm  £4,030 sqm  £4,700 sqm  79 
BS30 5 Wick  £3,530 sqm  £3,970 sqm  £4,520 sqm  87 
BS15 3 Hanham  £3,420 sqm  £3,770 sqm  £4,310 sqm  188 
Raw data
Our analysis of BS30 9 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 

42, Hoopers Walk, Longwell Green  £231,000
Sep2024

59  3,915 
14, Fontana Close, Longwell Green  £275,000
Sep2024

56  4,910 
70, Court Farm Rd, Longwell Green  £770,000
Sep2024

213  3,615 
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.