12a, Heath Lawn, Flackwell Heath, High Wycombe, HP10 9EX
About 12a
12a is a semi-detached house in Flackwell Heath, High Wycombe, High Wycombe (HP10 9EX). It has a recorded floor area of 78 m² (around 840 sq ft), construction records dating it to 1950-1966 and council tax band D. The latest certificate (September 2022) shows a C (score 71). The rating has held steady at C across 2 certificates since February 2014. Between certificates, roof efficiency went from Average to Good; while wall efficiency dropped from Good to Average and lighting dropped from Good to Average. The recommended improvements would push it to B (score 86).
Know exactly what you're buying at 12a
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
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
Heating controls upgraded for better temperature management
Loft insulation upgraded to recommended levels
Low energy lighting percentage decreased
Planning history
12a has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
Sales history & valuation
12a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£405,000
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 HP10 9EX: £450,000 (2025–2019).
Nearby sales in HP10 9EX
11 Heath Lawn, Flackwell Heath, High Wycombe, HP10 9EX
Sold Aug 2025
£450,0003 Heath Lawn, Flackwell Heath, High Wycombe, HP10 9EX
Sold Aug 2024
£450,00010 Heath Lawn, Flackwell Heath, High Wycombe, HP10 9EX
Sold Sept 2022
£440,0004 Heath Lawn, Flackwell Heath, High Wycombe, HP10 9EX
Sold Feb 2022
£650,0009 Heath Lawn, Flackwell Heath, High Wycombe, HP10 9EX
Sold Apr 2019
£330,000
Everything we know about 12a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?

Versus other Heath Lawn homes
On floor area, 12a runs well behind the street norm.
EPC Rating
71 (C)
Street avg 68 (D)
Floor Area
78 m²
Street avg 97 m²
CO₂ Emissions
2.7 t/year
Street avg 3.5 t/year
Habitable Rooms
5 rooms
Street avg 5 rooms
Similar properties nearby
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HP10 9UW
1 Altona Road, Loudwater
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1 Buckingham Way, Flackwell Heath
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1 Ashwood Road
HP10 9FZ
1 Buckthorn Close
HP10 9GA
1 Carrington Avenue, Flackwell Heath
HP10 9AL
1 Conway Close, Loudwater
HP10 9TR
1 Damson Court
HP10 9FG
The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
3/mo
Rising year-on-year across the wider district.
Nearest stop
0.0 km
Rugwood Road — bus stop.
Closest school
0.6 km
Carrington Junior School. 15 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
54.0dB

Night-time· 23:00 – 07:00
46.5dB