11 Sylvester Avenue, Chislehurst, BR7 5ED
About 11 Sylvester Avenue
11 Sylvester Avenue is a detached house in Chislehurst (BR7 5ED). It has a recorded floor area of 174 m² (around 1873 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (May 2022) shows a D (score 59), a step below the typical UK home. When first surveyed in April 2010 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Average, window efficiency went from Very Poor to Poor and lighting went from Very Poor to Average; while hot-water efficiency dropped from Very Good to Good and main heating dropped from Very Good to Good. The recommended improvements would push it to C (score 73).
At 174 m² it's 27% larger than the typical home in the postcode (137 m² median across 9 EPCs). Across 2010–2024, sale prices on this property compounded at 4.8% per year. On a £-per-square-foot basis, the last sale (£838/sq ft) was about 97.2% above the typical sold price in the postcode. 3 planning records sit against the property, 0 approved, 1 refused. Most recent transfer: May 2024 at £1,570,000.
Know exactly what you're buying at 11 Sylvester 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
Energy performance
11 Sylvester Avenue'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 decreased
Window efficiency improved
Cavity wall insulation installed
More low energy lighting installed
Planning history
- Aug 2008OutbuildingOutlineIn report
Single storey detached building in rear garden CERTIFICATE OF LAWFULNESS FOR A PROPOSED DEVELOPMENT
- Documents
- 6 docs on file
- Reference
- 08/02330/PLUD
- Mar 2006Tree WorksTreesIn report
Crown reduce 2 oak trees by 30%
- Documents
- 1 doc on file
- Reference
- 06/00160/TPSPLD
We flagged 1 thing worth checking at 11 Sylvester 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.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
Latest sale on 11 Sylvester Avenue was the highest on Land Registry record across the postcode.
£1,460,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.8% per year over 14 years.
£1,570,000
Growth on file: 4.8% per year over 14 years.
Sales timeline
27 May 2024Most recent
£1,570,000
+91.5%over 13 years13 June 2010
£820,000
Median price across the last 5 sales in BR7 5ED: £925,000 (2025–2016).
Nearby sales in BR7 5ED
10 Sylvester Avenue, Chislehurst, BR7 5ED
Sold Aug 2025
£920,0005 Sylvester Avenue, Chislehurst, BR7 5ED
Sold May 2025
£975,0003 Sylvester Avenue, Chislehurst, BR7 5ED
Sold Apr 2024
£925,0004 Sylvester Avenue, Chislehurst, BR7 5ED
Sold Mar 2021
£820,00013 Sylvester Avenue, Chislehurst, BR7 5ED
Sold Feb 2016
£1,210,000
Everything we know about 11 Sylvester 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
- Larger development activity nearby

Versus other Sylvester Avenue homes
11 Sylvester Avenue outperforms the street on price per m² by a wide margin.
Price per m²
£9,023
Street avg £5,515
Floor Area
174 m²
Street avg 171 m²
Habitable Rooms
7 rooms
Street avg 7 rooms
CO₂ Emissions
7.4 t/year
Street avg 8.3 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
0.3 km
Elmstead Woods — bus stop.
Closest school
0.8 km
Bullers Wood School. 28 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
48.9dB

Night-time· 23:00 – 07:00
38.1dB