Feb 07, 2023 by HM

House prices in Sidcup (DA15 9)

This article reveals price per square metre data and various charts to help you understand current housing market in Sidcup (DA15 9).

Price per square metre

Knowing the average house price in Sidcup 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. 89, Sherwood Park Avenue, Sidcup, sold for £402,000 on Sep-2023. Given the internal area of 53 square metres, the price per sqm is £7,584.

England & Wales have been officially metric for many decades. However house price per square foot is sometimes prefered by those of sufficiently advanced age. They may want to convert metres 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. £5,700-£6,000, £6,000-£6,300, £6,300-£6,600 etc...) we then count the number of sales with within in each bucket and plot the results. The chart is based on 178 sales in Sidcup (DA15 9) that took place in the last two years.

Distribution of £ per sqm for Sidcup (DA15 9)
Distribution of £ per sqm house prices in Sidcup

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.

That said, the spread of prices will give you a feel of the typical range to expect in Sidcup (DA15 9). Of the 178 transactions, half were sold for between £4,960 and £6,440 per square metre. Notably, only 25% of properties that sold recently were valued at more than £6,440m2. For anything to be valued more than this means it has to be more desireable than the clear majority of homes.

For the average, we calculate the 'median' or middle price. The median price per square metre in 'DA15 9' is £5,630. The table below shows how 'DA15 9' compares to neighbouring postcode sectors.

Postcode sector Lower quartile Middle quartile Upper quartile
DA15 8 Sidcup £5,160m2 £5,740m2 £6,430m2
DA15 9 Sidcup £4,960m2 £5,630m2 £6,440m2
DA15 7 Sidcup £4,370m2 £5,170m2 £5,780m2

Will Sidcup 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 scatter plot below for DA15 9 (Sidcup). From this one could infer a range of reasonable possible future price falls or rises. In the chart below, the red dashed line is the house price trend for DA15 9 and the blue dots are the individual property sales that inform this trend.

Price per square metre in Sidcup (DA15 9) over time
House price trends for Sidcup

Hover on any blue dot to see details of specific sales

Disclaimer: The data provided throughout this website about Sidcup 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. Furthermore, I cannot guarantee the accuracy of any data shown. This information is based on sold prices and internal area data provided by Land Registry and other third parties - I do not verify the accuracy of the Sidcup data or any other data I am given.

Price map for Sidcup

I've just finished coding the map I link to below. I find it useful and I am sure it will help you in exploring Sidcup. 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. I will explain more about the methodology and create a key next week.

Property price heatmap for Sidcup
House price heatmap for Sidcup

Street level data

Street Avg size Avg £/m2 Recent sales
Harcourt Avenue, Sidcup, DA15 9L 69m2 £5,661 39
Ramillies Road, Sidcup, DA15 9J 68m2 £5,425 39
Sherwood Park Avenue, Sidcup, DA15 9J 66m2 £6,114 35
Rowley Avenue, Sidcup, DA15 9L 77m2 £5,307 28
Hurst Road, Sidcup, DA15 9A 119m2 £5,150 27
Burns Avenue, Sidcup, DA15 9H 71m2 £5,606 24
Park Mead, Sidcup, DA15 9P 74m2 £4,304 24
Penshurst Avenue, Sidcup, DA15 9E 71m2 £5,713 21

Search for your street here.

Raw data

Our analysis of Sidcup 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 m2 £/m2
89, Sherwood Park Avenue, Sidcup £402,000
53 7,584
25, Wellan Close, Sidcup £371,000
72 5,152
113, Penshurst Avenue, Sidcup £358,000
66 5,424

See the entire list of all sales in Sidcup (DA15 9) here.


HouseMetric is a hobby, created out of a desire to see data and analysis not present on any free to use website. It is still a work in progress and I'll add more stuff in the near future.