12 Allenby Road, Biggin Hill, Westerham, TN16 3LH
About 12 Allenby Road
12 Allenby Road is a two-bedroom semi-detached house in Biggin Hill, Westerham, Westerham (TN16 3LH). It has a recorded floor area of 57 m² (around 614 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (July 2017) shows an E (score 43), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 89), a 3-band jump. Main heating runs on electricity. Other recorded features include notable views.
At 57 m² it sits well below the postcode median (115 m² across 21 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 76% of similar EPCs). 3 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £424,000 is 15.2% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£600/sq ft) was about 102.7% above the typical sold price in the postcode. Last sold in December 2017, so it's been off the market for around 8 years.
Know exactly what you're buying at 12 Allenby Road
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
- Bedrooms2
- Bathrooms1
Outside
- Private gardenFront and rear
- GarageDetached
- Notable viewsYes
Energy performance
12 Allenby Road's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Planning history
Planning history includes both a loft conversion and an extension — the classic family-home expansion.
- Nov 2024ExtensionFullIn report
Extension: Single storey · Rear of property
Single storey rear extension.
- Agent
- Plan and Survey
- Documents
- 7 docs on file
- Reference
- 24/03568/FULL6
- Nov 2018Loft ConversionAmendmentIn report
Hip to gable loft conversion and rear dormer extension LAWFUL DEVELOPMENT CERTIFICATE (EXISTING)
- Agent
- Stefan Black Architect
Retrospective- Documents
- 18 docs on file
- Reference
- 18/03804/ELUD
We flagged 1 thing worth checking at 12 Allenby Road
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
12 Allenby Road valuation sits well clear of the typical sold price in this postcode.
£424,000
Modelled from EPC, postcode comparables.
£368,000
Recorded with HM Land Registry.
Sales timeline
7 December 2017Most recent
£368,000
Median price across the last 5 sales in TN16 3LH: £550,000 (2025–2023).
Nearby sales in TN16 3LH
27 Allenby Road, Biggin Hill, Westerham, TN16 3LH
Sold Oct 2025
£650,00023 Allenby Road, Biggin Hill, Westerham, TN16 3LH
Sold Oct 2025
£450,00018 Allenby Road, Biggin Hill, Westerham, TN16 3LH
Sold Dec 2024
£550,00019 Allenby Road, Biggin Hill, Westerham, TN16 3LH
Sold Jul 2024
£430,0002a, Allenby Road, Biggin Hill, Westerham, TN16 3LH
Sold Jun 2023
£700,000
Everything we know about 12 Allenby Road, 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 Allenby Road homes
12 Allenby Road is notably below the street on floor area.
Price per m²
£6,456
Street avg £4,563
Floor Area
57 m²
Street avg 111 m²
Habitable Rooms
3 rooms
Street avg 5 rooms
CO₂ Emissions
6.4 t/year
Street avg 5.0 t/year
Similar properties nearby
1 Alexandra Road, Biggin Hill
TN16 3NY
1 Bridlington Close, Biggin Hill
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1 Filey Close, Biggin Hill
TN16 3PE
1 Foley Road, Biggin Hill
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1 Bottom Barn Cottage, Berrys Hill, Berrys Green
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1 Allenby Road, Biggin Hill
TN16 3LH
1 Aperfield Road, Biggin Hill
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1 Charlton Drive, Biggin Hill
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Village Green Way — bus stop.
Closest school
0.6 km
Biggin Hill Primary School. 5 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
47.1dB

Night-time· 23:00 – 07:00
39.0dB