21 Bonar Place, Chislehurst, BR7 5RJ
About 21 Bonar Place
21 Bonar Place is a detached house in Chislehurst (BR7 5RJ). It has a recorded floor area of 207 m² (around 2228 sq ft), construction records dating it to 1967-1975 and council tax band F. The latest certificate (December 2014) shows a C (score 71). When first surveyed in February 2013 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Poor to Very Good; while lighting dropped from Average to Very Poor. The recommended improvements would push it to B (score 82). The latest certificate is from December 2014, so improvements made since then won't be reflected.
At 207 m² the property is well over the postcode median (148 m² across 15 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 87% of similar EPCs). Today's modelled estimate of £1,052,000 sits 110.4% above the 2013 sale of £500,000. On a £-per-square-foot basis, the last sale (£224/sq ft) was about 47.2% below the postcode norm. 5 planning records sit against the property, 2 approved, 3 refused. Past consents include an extension and a garage conversion, meaningful when judging how the property has evolved. 13 years since the last transfer (June 2013).
Know exactly what you're buying at 21 Bonar Place
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
Energy performance
21 Bonar Place's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 15 Dec 2024
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Loft insulation upgraded to recommended levels
Low energy lighting percentage decreased
Planning history
A a loft conversion application was refused at 21 Bonar Place in 2023.
- Oct 2023Loft ConversionFullIn report
Loft conversion to include increase ridge height by 600mm, side roof dormers and rooflights, Juliet balcony to rear and elevational alterations.
- Agent
- Design and Plan Consultants Ltd
- Documents
- 16 docs on file
- Reference
- 23/02757/FULL6
- Feb 2023Loft ConversionOutlineIn report
Loft conversion with roof alterations including increase ridge height and side roof dormers and elevations alteration (Outline application in respect of access, appearance, layout and scale)
- Agent
- Hoc Studio Architects
- Documents
- 17 docs on file
- Reference
- 22/04457/OUT
We flagged 2 things worth checking at 21 Bonar Place
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.
- Larger development activity nearby
- A planning decision worth checking
30-day money-back guarantee
Sales history & valuation
21 Bonar Place valuation sits well clear of the typical sold price in this postcode.
£1,052,000
Modelled from EPC, postcode comparables.
£500,000
Recorded with HM Land Registry.
Sales timeline
11 June 2013Most recent
£500,000
Median price across the last 5 sales in BR7 5RJ: £1,075,000 (2023–2021).
Nearby sales in BR7 5RJ
Everything we know about 21 Bonar Place, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby
- A planning decision worth checking

Versus other Bonar Place homes
On price per m², 21 Bonar Place runs well behind the street norm.
Price per m²
£2,415
Street avg £6,260
Floor Area
207 m²
Street avg 148 m²
Habitable Rooms
7 rooms
Street avg 7 rooms
CO₂ Emissions
5.8 t/year
Street avg 6.7 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Logs Hill — bus stop.
Closest school
0.6 km
Bullers Wood School. 30 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
48.5dB

Night-time· 23:00 – 07:00
38.0dB