Our Data Sources
21, Glentrammon Avenue, Orpington has 3 entries in the Land Registry , most recently in November 2024 and a single entry in the EPC database dated July 2024.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For 21, Glentrammon Avenue, Orpington, we estimate a market value of £734,869 and a rental value of £2,862 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £650,884 and £2,535 per month respectively.
Plot Size
HM Land Registry records the plot of land for 21, Glentrammon Avenue, Orpington as measuring 462 m2.
That makes it the 6th largest plot in the postcode, where all 29 other houses have recorded plot data.
Energy Efficiency
21, Glentrammon Avenue, Orpington has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 02 Jul 2024.
The property is connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Sold Prices
The most recent sale of 21, Glentrammon Avenue, Orpington completed on 1st November 2024 at £680,000 and was recorded by HM Land Registry as a freehold house.
Since 1995 the property has sold 3 times.
Values of comparable properties have risen by 5.4% over the period since November 2024.
- Sold Nov 2024£680,000
- Sold Feb 2021£630,000
- Sold Jul 2014£425,000
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to 21, Glentrammon Avenue, Orpington have sold within a radius of 650 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 11th August 2025, was 7, Green Farm Close, Orpington, BR6 6DJ, a freehold house which sold for £675,000.
Read more about house prices in BR6.
- Sold Aug 2025£675,000 | 4 Bed House7, Green Farm Close, Orpington, BR6 6DJ7, Green Farm Close, Orpington, BR6 6DJ
- Sold Nov 2024£672,500 | 4 Bed House32, Glentrammon Road, Orpington, BR6 6DF32, Glentrammon Road, Orpington, BR6 6DF
- Sold Oct 2024£700,000 | 4 Bed House156, Windsor Drive, Orpington, BR6 6HQ156, Windsor Drive, Orpington, BR6 6HQ
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 39 addresses on Glentrammon Avenue, Orpington, BR6, 21, Glentrammon Avenue, Orpington comes out as the 5th largest and the 5th most expensive in our analysis of the public data.
It is also £56k more expensive than the average property across the BR6 district.
More reading links
Schools Nearby
- 200mGreen Street Green Primary School
- 700mWarren Road Primary School
- 1.4kmHoly Innocents Catholic Primary School
- 1.6kmSt Olave's and St Saviour's Grammar School
- 1.9kmNewstead Wood School
- 2.3kmDarrick Wood School
More reading links
Public Transport Nearby
- 1.2kmChelsfield
- 2.2kmOrpington
- 2.8kmKnockholt
Available Internet Speeds
Broadband here reaches ultrafast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Ultrafast broadband is available in the area.
Risk of Flooding
The flood risk here is rated very low, based on Environment Agency data.












