1 Grass Hays, Aylesbury, HP21 7AJ
About 1 Grass Hays
1 Grass Hays is a four-bedroom semi-detached house in Aylesbury (HP21 7AJ). It has a recorded floor area of 113 m² (around 1216 sq ft), construction records dating it to 1967-1975 and council tax band E. The latest certificate (June 2020) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2010. Between certificates, roof efficiency dropped from Very Good to Good and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to C (score 80).
At 113 m² it's 15.3% larger than the typical home in the postcode (98 m² median across 6 EPCs). Today's modelled estimate of £492,000 is 23% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£329/sq ft) was about 23.8% above the typical sold price in the postcode. Sold February 2021 for £400,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
What this property has
Inside
- Bedrooms4
- Bathrooms2
- Dining roomYes
- EnsuiteYes
- FireplaceYes
Outside
- Private gardenRear
- DrivewayYes
Everything you need to know about 1 Grass Hays
The true value, the hidden risks and the full sale history, in one report.
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The data behind every report
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency decreased
Windows upgraded, improving insulation
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
Planning history
1 Grass Hays has no planning applications on record.
But the area is active
3 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.
£492,000
Modelled from EPC, postcode comparables.
£400,000
Recorded with HM Land Registry.
Sales timeline
26 February 2021Most recent
£400,000
Median price across the last 5 sales in HP21 7AJ: £348,000 (2025–2020).
Versus other Grass Hays homes
Price per m²
£3,540
Street avg £3,511
Floor Area
113 m²
Street avg 101 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
4.4 t/year
Street avg 4.0 t/year
Everything you need to know about 1 Grass Hays
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
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Welbeck Avenue — bus stop.
Closest school
0.5 km
Bedgrove Junior School. 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
51.0dB
Night-time· 23:00 – 07:00
41.0dB