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Get started21 Byron Avenue is a three-bedroom detached house in Coulsdon (CR5 2JS). It has a recorded floor area of 112 m² (around 1201 sq ft), construction records dating it to 1930-1949 and council tax band F. The latest certificate (July 2009) shows an F (score 38), near the bottom of the EPC scale. The recommended improvements would lift it to D (score 59), a 2-band jump. The latest certificate is from July 2009, so improvements made since then won't be reflected.
It hasn't traded since November 2009, a hold of 17 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 112 m² it's 18.5% smaller than the typical home in the postcode (137 m² median across 13 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £594,000 sits 69.2% above the 2009 sale of £351,000.
21 Byron Avenue sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
This certificate is over 10 years old and is no longer valid.Expired 17 Jul 2019
The latest sale fell during the post-2008 dip, often a low-water mark in price comparisons.
£594,000
Modelled from EPC, postcode comparables.
£351,000
Recorded with HM Land Registry.
Years Held for 21 Byron Avenue runs comfortably ahead of the street norm.
Price per m²
£3,145
Street avg £4,457
Floor Area
112 m²
Street avg 131 m²
Habitable Rooms
5 rooms
Rail-style transport is unusually close for this postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Cearn Way — bus stop.

Daytime· 07:00 – 23:00
50.9dB

12 November 2009Most recent
£351,000
Median price across the last 5 sales in CR5 2JS: £682,100 (2024–2020).
Street avg 5 rooms
CO₂ Emissions
9.1 t/year
Street avg 6.8 t/year
CR5 2AY
Closest school
0.6 km
Oasis Academy Byron. 19 schools nearby.
Night-time· 23:00 – 07:00
41.8dB
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