21 Copthorne Avenue, Bromley, BR2 8NW
About 21 Copthorne Avenue
21 Copthorne Avenue is a three-bedroom semi-detached house in Bromley (BR2 8NW). It has a recorded floor area of 89 m² (around 958 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (August 2025) shows a D (score 63), on the cusp of jumping into the C band. When first surveyed in December 2014 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Good to Very Good, hot-water efficiency went from Average to Good and lighting went from Poor to Good; while window efficiency dropped from Good to Poor. The recommended improvements would push it to C (score 80).
Untraded for 24 years, with the last transfer in May 2002. Across 1999–2002, sale prices on this property compounded at 15.1% per year. Today's modelled estimate of £602,000 sits 201.1% above the 2002 sale of £199,950. On a £-per-square-foot basis, the last sale (£209/sq ft) was about 45.1% below the postcode norm.
Know exactly what you're buying at 21 Copthorne Avenue
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms3
- Bathrooms1
- Open-plan layoutYes
- Dining roomYes
Outside
- Private gardenRear
- GarageYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
21 Copthorne Avenue has no planning applications on record.
Notable planning nearby
10applications of note in the surrounding area
We flagged 2 things worth checking at 21 Copthorne Avenue
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
- Larger development activity nearby
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Sales history & valuation
21 Copthorne Avenue's modelled value sits at over four times its earliest registered sale price (1999).
£602,000
Modelled from EPC, postcode comparables and a sale-price growth of 15.1% per year over 3 years.
£199,950
Growth on file: 15.1% per year over 3 years.
Sales timeline
9 May 2002Most recent
£199,950
+48.1%over 2 years22 July 1999
£135,000
Median price across the last 5 sales in BR2 8NW: £480,000 (2022–2018).
Nearby sales in BR2 8NW
Everything we know about 21 Copthorne Avenue, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby
Versus other Copthorne Avenue homes
On price per m², 21 Copthorne Avenue runs well behind the street norm.
Price per m²
£2,247
Street avg £4,667
Floor Area
89 m²
Street avg 97 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
3.7 t/year
Street avg 4.4 t/year
Similar properties nearby
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Lakeside Drive Keston Mark — bus stop.
Closest school
0.8 km
Trinity Church of England Primary School. 20 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
49.5dB
Night-time· 23:00 – 07:00
41.8dB