House prices in AL9 5 (Hatfield)

This article reveals price per square metre data and various charts to help you understand current housing market in Hatfield, Brookmans Park (AL9 5).

Defining 'AL9 5'

This analysis is limited to properties whose postcode starts with "AL9 5", this is also called the postcode sector. It is shown in red on the map above. There are no official names for postcode sectors so I've just labelled it Hatfield.

You can click on the map labels to change to a neighbouring sector, or you can enter a different postcode sector (e.g. CM23 4) below.

FYI, a postcode sector is the full postcode without the last two letters.

Price per square metre

Knowing the average house price in Hatfield 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
E.g. 4 Waterside Cottages, Mill Green, Hatfield, Brookmans Park, sold for £500,000 on Mar-2024. Given the internal area of 80 square metres, the price per sqm is £6,250.

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 ;-) They may want to convert square meters on this page to square feet.

The chart below is called a histogram, it helps you see the distribution of this house price per sqm data. To make this chart we put the sales data into a series of £ per sqm 'buckets' (e.g. £4,800-£5,000, £5,000-£5,200, £5,200-£5,400 etc...) we then count the number of sales with within in each bucket and plot the results. The chart is based on 67 sales in Hatfield (AL9 5) that took place in the last two years.

Distribution of £ per sqm for Hatfield, Brookmans Park
Distribution of £ per sqm house prices in Hatfield

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 Hatfield (AL9 5). Of the 67 transactions, half were sold for between £4,170 and £5,240 per square metre. The median, or 'middle', price per square metre in 'AL9 5' is £4,600. Notably, only 25% of properties that sold recently were valued at more than £5,240 sqm. For anything to be valued more than this means it has to be more desireable than the clear majority of homes.

Price map for Hatfield, Brookmans Park

Do have a look at the interactive price map I created. I find it useful and I am sure it will help you in exploring Brookmans Park. You can zoom in all the way to individual properties and then all the way back out to see the whole country. The colours show the current estimated property values.

Property price heatmap for Hatfield
House price heatmap for Hatfield, Brookmans Park

Comparison with neighbouring postcode sectors

The table below shows how 'AL9 5' compares to neighbouring postcode sectors.

Postcode sector Lower quartile Middle quartile Upper quartile
AL9 6 Essendon £5,170 sqm £6,280 sqm £6,900 sqm
AL9 5 Hatfield £4,170 sqm £4,600 sqm £5,240 sqm
AL9 7 Welham Green £5,050 sqm £6,110 sqm £7,290 sqm

Will Brookmans Park house prices drop in 2024?

I cannot tell the future and don't believe anyone who says they can. I can however plot price trends - I have done this in the chart below for AL9 5 (Hatfield) compared with both the wider area AL9 and inflation (CPIH from the Office of National Statistics). The dashed trend lines in the chart show the average over time.

Historic price per square metre in Hatfield,Brookmans Park
House price trends for Hatfield

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.

Most recent AL9 5 sales
Recent trends for Hatfield

Data from Land Registry comes in gradually over time. I update it every month but it takes about 5 months for the majority of sales for Brookmans Park to be recorded. Disclaimer: I do not verify and cannot guarantee the accuracy of any data shown. Outliers exist in the data, typically these are where the EPC registry records the internal area incorrectly, sometimes although very rarely the Land Registry price paid data can be wrong. The data provided throughout this website about Brookmans Park and any other area, is not financial advice. Any information provided does not and cannot ever take in to account the particular financial situation, objectives or property needs of either you or anyone reading this information.

Street level data

Street Avg size Avg £sqm Recent sales
Park Meadow, Hatfield, AL9 5H 110 sqm £4,035 20
Sovereign Place, Hatfield, AL9 5E 89 sqm £4,218 18
Great North Road, Hatfield, AL9 5F 65 sqm £4,588 16
The Ryde, Hatfield, AL9 5D 140 sqm £5,320 11
Great North Road, Hatfield, AL9 5E 74 sqm £4,308 10
Park Close, Hatfield, AL9 5A 86 sqm £4,431 9
Bull Stag Green, Hatfield, AL9 5D 69 sqm £4,428 7
Great North Road, Hatfield, AL9 5B 64 sqm £4,858 7

Search for your street here.

Raw data

Our analysis of Hatfield 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
4 Waterside Cottages, Mill Green, Hatfield, Brookmans Park £500,000
80 6,250
4, Park Close, Hatfield, Brookmans Park £550,000
116 4,741
90, Park Meadow, Hatfield, Brookmans Park £450,000
122 3,688

See the entire list of all sales in Hatfield (AL9 5) here.


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.