21 St Johns Street, Aylesbury, HP20 1BS
About 21 St Johns Street
21 St Johns Street is an end-of-terrace house in Aylesbury (HP20 1BS). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (June 2015) shows an F (score 38), near the bottom of the EPC scale. Earlier certificates rated it E (September 2008); the latest reading is one band lower. Between certificates, lighting went from Poor to Good and main heating went from Average to Good. The recommended improvements would lift it to B (score 84), a 4-band jump. The latest certificate is from June 2015, so improvements made since then won't be reflected.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement.
Everything you need to know about 21 St Johns Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
21 St Johns Street sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 08 Jun 2025
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has been extended more than once, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
21 St Johns Street has no planning applications on record.
But the area is active
7 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
21 St Johns Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£259,000
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 HP20 1BS: £290,000 (2024–2021).
Nearby sales in HP20 1BS
Versus other St Johns Street homes
On epc rating, 21 St Johns Street runs well behind the street norm.
EPC Rating
38 (F)
Street avg 64 (D)
Floor Area
72 m²
Street avg 74 m²
CO₂ Emissions
6.5 t/year
Street avg 3.3 t/year
Habitable Rooms
4 rooms
Street avg 4 rooms
Everything you need to know about 21 St Johns Street
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
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
7/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Cambridge Street — bus stop.
Closest school
0.6 km
Elmhurst School. 29 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
55.0dB
Night-time· 23:00 – 07:00
45.9dB