18 Ashfield Lane, Chislehurst, BR7 6LQ
About 18 Ashfield Lane
18 Ashfield Lane is a five-bedroom detached house in Chislehurst (BR7 6LQ). It has a recorded floor area of 440 m² (around 4736 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (February 2017) shows a D (score 62), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since May 2014. Between certificates, window efficiency went from Average to Good, hot-water efficiency went from Average to Good and lighting went from Very Poor to Very Good; while wall efficiency dropped from Good to Poor and roof efficiency dropped from Good to Very Poor. The recommended improvements would push it to C (score 70). Our model identifies extension potential, subject to local planning policy.
At 440 m² the property is well over the postcode median (211 m² across 16 EPCs), placing it in the larger end of the local stock. 9 planning records sit against the property, 3 approved, 2 refused. Past consents include an extension, a loft conversion and a porch, meaningful when judging how the property has evolved. Across 2015–2018, sale prices on this property compounded at 23.9% per year. Today's modelled estimate of £2,426,000 is 10.3% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£465/sq ft) was about 27.2% above the typical sold price in the postcode. On the market in April 2018 and unlisted since — roughly 8 years.
Know exactly what you're buying at 18 Ashfield Lane
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
- Bedrooms5
- Dining roomYes
Outside
- Private gardenYes
- GarageDouble, Integral
Building
- Extension potentialPossible
Energy performance
18 Ashfield Lane's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Windows upgraded, improving insulation
More low energy lighting installed
Planning history
- Nov 2015OutbuildingOutlineIn report
Single storey detached outbuilding
- Agent
- Crofton Design Services Ltd.
- Documents
- 6 docs on file
- Reference
- 15/04278/PLUD
- Sept 2015Loft ConversionConditionsIn report
Extension: Part single, part two storey
Roof alterations to incorporate front and rear dormer extensions and accommodation in roofspace, part one/two storey rear and single storey side extensions, front porch canopy and elevational alterations (amendment to permitted ref 13/04120/FULL6)
- Agent
- Crofton Design Services Ltd.
ExtensionPorch- Documents
- 5 docs on file
- Reference
- 15/01032/CONDT1
We flagged 1 thing worth checking at 18 Ashfield Lane
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
30-day money-back guarantee
Sales history & valuation
18 Ashfield Lane has more than doubled in price since the earliest registered sale in 2015.
£2,426,000
Modelled from EPC, postcode comparables and a sale-price growth of 23.9% per year over 3 years.
£2,200,000
Growth on file: 23.9% per year over 3 years.
Sales timeline
19 April 2018Most recent
£2,200,000
+100.0%over 3 years23 January 2015
£1,100,000
Median price across the last 5 sales in BR7 6LQ: £1,395,000 (2024–2021).
Nearby sales in BR7 6LQ
12 Ashfield Lane, Chislehurst, BR7 6LQ
Sold Jan 2024
£830,00016 Ashfield Lane, Chislehurst, BR7 6LQ
Sold Sept 2023
£1,395,00028 Ashfield Lane, Chislehurst, BR7 6LQ
Sold Oct 2022
£1,770,00016c, Ashfield Lane, Chislehurst, BR7 6LQ
Sold May 2022
£1,450,00016a, Ashfield Lane, Chislehurst, BR7 6LQ
Sold Sept 2021
£1,140,000
Everything we know about 18 Ashfield Lane, 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

Versus other Ashfield Lane homes
CO₂ Emissions for 18 Ashfield Lane lags the street by a wide margin.
Price per m²
£5,000
Street avg £4,824
Floor Area
440 m²
Street avg 250 m²
Habitable Rooms
9 rooms
Street avg 8 rooms
CO₂ Emissions
16.0 t/year
Street avg 9.2 t/year
Similar properties nearby
1 Cardinal Close
BR7 6SA
1 Bridgewater Close
BR7 6QU
1 Buckingham Drive
BR7 6TB
1 Albany Road
BR7 6BG
1 Broadheath Drive
BR7 6EU
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BR7 6TF
1 Brickfield Cottages, White Horse Hill
BR7 6DP
1 Benson Mews
BR7 6FD
The neighbourhood at a glance
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Bromley Lane / Chislehurst War Memorial — bus stop.
Closest school
0.5 km
St Nicholas Church of England Primary. 25 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
52.9dB

Night-time· 23:00 – 07:00
44.8dB