House prices in AL7 3 (Welwyn Garden City)

This article reveals price per square metre data and various charts to help you understand current housing market in Welwyn Garden City (AL7 3).

Defining 'AL7 3'

This analysis is limited to properties whose postcode starts with "AL7 3", 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 Welwyn Garden City.

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 Welwyn Garden City 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. 149, Peartree Lane, Welwyn Garden City, sold for £415,000 on Apr-2024. Given the internal area of 78 square metres, the price per sqm is £5,320.

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. £5,800-£6,000, £6,000-£6,200, £6,200-£6,400 etc...) we then count the number of sales with within in each bucket and plot the results. The chart is based on 177 sales in Welwyn Garden City (AL7 3) that took place in the last two years.

Distribution of £ per sqm for Welwyn Garden City
Distribution of £ per sqm house prices in Welwyn Garden City

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 Welwyn Garden City (AL7 3). Of the 177 transactions, half were sold for between £4,460 and £5,670 per square metre. The median, or 'middle', price per square metre in 'AL7 3' is £4,930. Notably, only 25% of properties that sold recently were valued at more than £5,670 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 Welwyn Garden City

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 Welwyn Garden City. 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 Welwyn Garden City
House price heatmap for Welwyn Garden City

Comparison with neighbouring postcode sectors

The table below shows how 'AL7 3' compares to neighbouring postcode sectors.

Postcode sector Lower quartile Middle quartile Upper quartile
AL7 3 Welwyn Garden City £4,460 sqm £4,930 sqm £5,670 sqm
AL7 4 Welwyn Garden City £4,420 sqm £4,910 sqm £5,460 sqm
AL7 2 Welwyn Garden City £4,350 sqm £5,000 sqm £5,810 sqm
AL7 1 Welwyn Garden City £3,960 sqm £4,520 sqm £5,000 sqm

Will Welwyn Garden City 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 AL7 3 (Welwyn Garden City) compared with both the wider area AL7 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 Welwyn Garden City,Welwyn Garden City
House price trends for Welwyn Garden City

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 AL7 3 sales
Recent trends for Welwyn Garden City

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 Welwyn Garden City 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 Welwyn Garden City 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
Otto Road, Welwyn Garden City, AL7 3E 58 sqm £4,694 24
Knella Road, Welwyn Garden City, AL7 3N 76 sqm £5,217 18
Cole Green Lane, Welwyn Garden City, AL7 3P 58 sqm £4,090 18
Mill Green Road, Welwyn Garden City, AL7 3U 57 sqm £5,900 14
Penn Way, Welwyn Garden City, AL7 3E 91 sqm £3,996 14
Duncan Close, Welwyn Garden City, AL7 3X 54 sqm £5,655 14
Bushey Ley, Welwyn Garden City, AL7 3H 88 sqm £4,669 13
Wheatley Road, Welwyn Garden City, AL7 3L 89 sqm £4,791 12

Search for your street here.

New build activity

Street Avg size Avg £sqm New build sales
Broadwater Road, Welwyn Garden City, AL7 3F 57 sqm £4,835 21

Broadwater Road, Welwyn Garden City, AL7 3F has seen 21 new build sales in the last 4 years (average price £278,621). These new build homes typically have an internal area of 57 sqm, with an average price of £4,835 sqm. This £sqm average is £-95 below the average for AL7 3. New builds typically command a £ per sqm premium. In the case of Broadwater Road the premium seems not to exist. Without more info we can only speculate why this may be. Perhaps it may be greater density and smaller gardens, but this is just a guess.

Raw data

Our analysis of Welwyn Garden City 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
149, Peartree Lane, Welwyn Garden City £415,000
78 5,320
14, Shortlands Green, Welwyn Garden City £370,000
72 5,138
79 Salvisberg Court, Otto Rd, Welwyn Garden City £225,000
45 5,000

See the entire list of all sales in Welwyn Garden City (AL7 3) 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.