21a, First Floor Flat, Crendon Street, High Wycombe, HP13 6LJ
About 21a
21a is a mid-terrace house in High Wycombe (HP13 6LJ). It has a recorded floor area of 59 m² (around 635 sq ft) and construction records dating it to 1930-1949. The latest certificate (September 2021) shows a D (score 62), on the cusp of jumping into the C band. When first surveyed in January 2011 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Very Poor to Average and hot-water efficiency went from Average to Good. The recommended improvements would push it to C (score 69).
At 59 m² it's 15.7% larger than the typical home in the postcode (51 m² median across 15 EPCs). Across 2011–2022, sale prices on this property compounded at 5.9% per year. On a £-per-square-foot basis, the last sale (£310/sq ft) was about 86.6% above the typical sold price in the postcode. Sold October 2022 for £197,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Everything you need to know about 21a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Window efficiency improved
Wall insulation improved
Low energy lighting percentage decreased
More low energy lighting installed
Get a survey for this property
Level 2 HomeBuyer Report
We've checked 10 risk factors against the available data for this property and believe a Level 2 HomeBuyer Report could be a suitable option for you.
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Planning history
21a has no planning applications on record.
But the area is active
13 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£207,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.9% per year over 12 years.
£197,000
Growth on file: 5.9% per year over 12 years.
Sales timeline
4 October 2022Most recent
£197,000
+93.1%over 11 years16 March 2011
£102,000
Median price across the last 3 sales in HP13 6LJ: £102,000 (2022–2011).
Versus other Crendon Street homes
On floor area, 21a stands well clear of the street.
EPC Rating
62 (D)
Street avg 56 (D)
Floor Area
59 m²
Street avg 49 m²
CO₂ Emissions
2.8 t/year
Street avg 3.6 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
Everything you need to know about 21a
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
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
Crendon Street — bus stop.
Closest school
0.4 km
Hamilton Academy. 22 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
55.6dB

Night-time· 23:00 – 07:00
46.1dB






