143a, London Road, High Wycombe, HP11 1BT
About 143a
143a is a semi-detached house in High Wycombe (HP11 1BT). It has a recorded floor area of 41 m² (around 441 sq ft), construction records dating it to 1900-1929 and council tax band B. At 41 m² this is the 13th smallest of 54 units on EPC record in the building, where floor areas span 18–226 m². The building's EPC ratings span G to C, with this unit at the top. The latest certificate (May 2019) shows a C (score 70). When first surveyed in October 2008 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Very Poor to Good and lighting went from Poor to Very Good; while window efficiency dropped from Good to Average.
At 41 m² it's 25.5% smaller than the typical home in the postcode (55 m² median across 53 EPCs). Its energy rating outperforms most of the postcode (better than 81% of similar EPCs).
Know exactly what you're buying at 143a
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
EPC Rating
Property Improvements
Changes detected from historical EPC data
Roof insulation improved
Low energy lighting percentage decreased
Wall insulation improved
More low energy lighting installed
Planning history
143a has no planning applications on record.
Notable planning nearby
9applications of note in the surrounding area
We flagged 2 things worth checking at 143a
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
143a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£210,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in HP11 1BT: £286,500 (2025–2021).
Nearby sales in HP11 1BT
195 London Road, High Wycombe, HP11 1BT
Sold Nov 2025
£525,000Flat 6, 123 London Road, High Wycombe, HP11 1BT
Sold Aug 2023
£205,000Flat 2, 129 London Road, High Wycombe, HP11 1BT
Sold Apr 2022
£286,500147 London Road, High Wycombe, HP11 1BT
Sold Apr 2022
£560,000Flat 9, 123 London Road, High Wycombe, HP11 1BT
Sold Nov 2021
£225,000
Everything we know about 143a, 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 London Road homes
On habitable rooms, 143a stands well clear of the street.
EPC Rating
70 (C)
Street avg 60 (D)
Floor Area
41 m²
Street avg 47 m²
CO₂ Emissions
1.8 t/year
Street avg 3.2 t/year
Habitable Rooms
3 rooms
Street avg 2 rooms
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
7/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Chestnut Avenue — bus stop.
Closest school
0.6 km
Beechview Academy. 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
49.7dB
Night-time· 23:00 – 07:00
40.0dB