11 Highlea Avenue, Flackwell Heath, High Wycombe, HP10 9AD
About 11 Highlea Avenue
11 Highlea Avenue is a three-bedroom detached house in Flackwell Heath, High Wycombe, High Wycombe (HP10 9AD). It has a recorded floor area of 77 m² (around 829 sq ft), construction records dating it to 1950-1966 and council tax band E. The latest certificate (September 2022) shows an E (score 47), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 84), a 3-band jump. Our model identifies extension potential, subject to local planning policy.
At 77 m² it sits well below the postcode median (116 m² across 11 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 82% of similar EPCs). On a £-per-square-foot basis, the last sale (£652/sq ft) was about 44.6% above the typical sold price in the postcode. Most recent transfer: November 2024 at £540,000. One historical planning record sits against the property in 2025.
Know exactly what you're buying at 11 Highlea Avenue
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
What this property has
Inside
- Bedrooms3
- Dining roomYes
Outside
- Private gardenRear
- GarageYes
Building
- Extension potentialPossible
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Planning history
- Apr 2025ExtensionOutlineIn report
Extension: Single storey · Rear of property
Notification of proposed single storey rear extension; Depth extending from the original rear wall of 4.50 metres, a maximum height of 2.85 metres and an eaves height of 2.85 metres
- Documents
- 6 docs on file
- Reference
- 25/05645/HPDN
What's in 11 Highlea Avenue, Flackwell Heath, High Wycombe, HP10 9AD's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
11 Highlea Avenue valuation sits well clear of the typical sold price in this postcode.
£567,000
Modelled from EPC, postcode comparables.
£540,000
Recorded with HM Land Registry.
Sales timeline
21 November 2024Most recent
£540,000
Median price across the last 5 sales in HP10 9AD: £750,000 (2025–2022).
Nearby sales in HP10 9AD
3 Highlea Avenue, Flackwell Heath, High Wycombe, HP10 9AD
Sold Aug 2025
£815,0002 Highlea Avenue, Flackwell Heath, High Wycombe, HP10 9AD
Sold Nov 2024
£750,00015 Highlea Avenue, Flackwell Heath, High Wycombe, HP10 9AD
Sold May 2023
£650,00018 Highlea Avenue, Flackwell Heath, High Wycombe, HP10 9AD
Sold Feb 2023
£695,00014 Highlea Avenue, Flackwell Heath, High Wycombe, HP10 9AD
Sold May 2022
£825,000
Everything we know about 11 Highlea Avenue, 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 Highlea Avenue homes
11 Highlea Avenue is notably below the street on epc rating.
Price per m²
£7,013
Street avg £5,797
Floor Area
77 m²
Street avg 117 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
5.6 t/year
Street avg 4.8 t/year
Similar properties nearby
1 Aspen Road
HP10 9FA
1 Birfield Road, Loudwater
HP10 9TW
1 Conway Close, Loudwater
HP10 9TR
1 Cherrywood Gardens, Flackwell Heath
HP10 9AX
1 Clay Close, Flackwell Heath
HP10 9BG
1 Carrington Avenue, Flackwell Heath
HP10 9AL
1 Chiltern Green, Flackwell Heath
HP10 9AJ
1 Chilterns Close, Flackwell Heath
HP10 9BB
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
0.5 km
The Common — bus stop.
Closest school
0.5 km
Carrington Junior School. 11 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
46.7dB

Night-time· 23:00 – 07:00
38.3dB