Our Data Sources
40, Northfield Avenue, Orpington has 21 entries in the Land Registry , most recently in October 2022 and a single entry in the EPC database dated May 2022.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 5 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate 40, Northfield Avenue, Orpington would be worth £421,260, with a potential rental value of £1,902 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £373,116, with a rental value of £1,685 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
40, Northfield Avenue, Orpington occupies a 217 m2 plot as recorded by HM Land Registry.
Of the 30 other houses in this postcode, 28 have recorded plot sizes, and this one ranks as the 25th largest.
Energy Efficiency
40, Northfield Avenue, Orpington has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 16 May 2022.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
40, Northfield Avenue, Orpington last changed hands on 21st October 2022, selling for £415,000. The transaction was logged as a freehold house by HM Land Registry.
In total it has sold twice since 1995.
The market for similar properties has risen by 1.3% since October 2022.
- Sold Oct 2022£415,000
- Sold Mar 1996£77,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 560 metres of 40, Northfield Avenue, Orpington across the last 2 years.
Most recently, 19, Northfield Avenue, Orpington, BR5 4JQ, a freehold house, sold at £371,420 on the 11th August 2025.
Read more about house prices in BR5.
- Sold Aug 2025£371,420 | 2 Bed House19, Northfield Avenue, Orpington, BR5 4JQ19, Northfield Avenue, Orpington, BR5 4JQ
- Sold Feb 2024£392,000 | 3 Bed House21, Northfield Avenue, Orpington, BR5 4JQ21, Northfield Avenue, Orpington, BR5 4JQ
- Sold Oct 2022£409,000 | 3 Bed House36, Sussex Road, Orpington, BR5 4JF36, Sussex Road, Orpington, BR5 4JF
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks 40, Northfield Avenue, Orpington as the 24th largest and the 28th most expensive of the 47 addresses on Northfield Avenue, Orpington, BR5.
Against the BR5 postcode district average, it is £81k less expensive than the typical property.
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Schools Nearby
- 200mSt Philomena's Primary School
- 400mSt. Mary Cray Primary Academy
- 500mHarris Primary Academy Orpington
- 1.0kmHarris Academy Orpington
- 2.1kmSt Olave's and St Saviour's Grammar School
- 3.1kmKemnal Technology College
More reading links
Public Transport Nearby
- 1.3kmSt Mary Cray
- 2.1kmOrpington
- 2.8kmPetts Wood
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a very low risk of flooding.












