11 Portland House, Arnison Avenue, High Wycombe, HP13 6DQ
About 11 Portland House
11 Portland House is an end-of-terrace house in High Wycombe (HP13 6DQ). It has a recorded floor area of 58 m² (around 624 sq ft), construction records dating it to 1950-1966 and council tax band B. At 58 m² this is the 3rd smallest of 5 units on EPC record in the building, where floor areas span 50–58 m². The building's EPC ratings span E to D, with this unit at the bottom. On EPC score it ranks last in the building (40 versus a best of 67). The latest certificate (May 2023) shows an E (score 40), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 70), a 2-band jump. Main heating runs on electricity.
Today's modelled estimate of £165,000 sits 65% above the 2016 sale of £100,000. On a £-per-square-foot basis, the last sale (£160/sq ft) was about 28.6% below the postcode norm. It lags the bulk of the postcode on energy efficiency (less efficient than 75% of similar EPCs). Last changed hands 10 years ago, in April 2016. 2 planning records sit against the property, 2 approved, 0 refused.
Everything you need to know about 11 Portland House
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
11 Portland House's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
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Planning history
2 applications on record at 11 Portland House, Arnison Avenue, High Wycombe, HP13 6DQ
- Mar 2012Change Of UseFullOutcome in report
Use of part of premises for private hire booking office (retrospective)
Retrospective- Documents
- 7 docs on file
- Reference
- 11/06982/FUL
- More recent applications — locked
- Change Of UseSept 2014Decision
Unlock 11 Portland House, Arnison Avenue, High Wycombe, HP13 6DQ's full planning history
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- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full, plus 13 notable nearby
- The 12 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
11 Portland House valuation sits well clear of the typical sold price in this postcode.
£165,000
Modelled from EPC, postcode comparables.
£100,000
Recorded with HM Land Registry.
Sales timeline
14 April 2016Most recent
£100,000
Median price across the last 5 sales in HP13 6DQ: £120,000 (2022–2004).
Versus other Arnison Avenue homes
11 Portland House is notably below the street on epc rating.
EPC Rating
40 (E)
Street avg 59 (D)
Floor Area
58 m²
Street avg 55 m²
CO₂ Emissions
6.6 t/year
Street avg 3.2 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
Everything you need to know about 11 Portland House
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee

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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
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
The Happy Wanderer PH — bus stop.
Closest school
0.6 km
The Royal Grammar School, High Wycombe. 24 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
49.1dB

Night-time· 23:00 – 07:00
38.6dB






