Model valuation£417,0008 Busby Close
Local market context
21 Allonby Way, Aylesbury, HP21 7JA
1 planning record
Estimated value
£642,000
- Since the 2021 sale (£530,000)+21%
- Against HP21 7JA's recent median (£625,500)+3%
Newest record on this page: March 2026. Land Registry and EPC registers update monthly, so this page can trail them by 2–3 months.
Property type
Detached
Bedrooms
4
Floor area
135 m²
1453 sq ft
Energy rating
D
Score 65
Council tax
Band F
Tenure
Owner Occupied
About this valuation
How the figure is worked out and what it's based on. If you know this home, you can tell other visitors what you think it's worth.
Our estimate
£642,000
- Against its 2021 sale (£530,000)+21%
- Against HP21 7JA's recent median (£625,500)+3%
Your note and figure are shown publicly on this page.
How the estimate is made
The estimate for 21 Allonby Way is modelled from its 135 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in HP21 7JA. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
What it's based on
Floor area
135 m² from the EPC lodged in September 2020
Sales of this home
1 sale recorded, the latest in 2021
Recent sales in HP21 7JA
5 sales, median £625,500 (2026–2020)
This page or the full report?
| Data | This page | Full report |
|---|---|---|
| Sales | Latest sale shown: March 2026 | Latest available records, read when you order |
| Valuation | Estimate from the last refresh | Analysed against comparable sales |
| Planning | 1 application | Full history, plus nearby schemes |
| Flood risk | Not shown | Included |
Sales history & valuation
Every recorded sale of this home, how its price has moved, and what neighbouring properties have sold for.
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
Sales timeline
8 March 2021Most recent
£530,000
Median price across the last 5 sales in HP21 7JA: £625,500 (2026–2020).
Nearby sales in HP21 7JA
What this page doesn't show
Nothing is flagged from the data on this page, but these checks are only run in the report. The detail, evidence and what to ask about it are in the Risks Report.
- Flood risk from rivers, sea and surface waterIn report
- Subsidence and ground-stability signalsIn report
- Refusals, enforcement and big schemes nearbyIn report
One time fee only - money back guarantee
About 21 Allonby Way
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
21 Allonby Way is a four-bedroom detached house in Aylesbury (HP21 7JA). It has a recorded floor area of 135 m² (around 1453 sq ft), construction records dating it to 1976-1982 and council tax band F. The latest certificate (September 2020) shows a D (score 65), on the cusp of jumping into the C band. The rating has held steady at D across 3 certificates since August 2011. Between certificates, roof efficiency went from Poor to Average and hot-water efficiency went from Poor to Good. The recommended improvements would push it to C (score 80).
Today's modelled estimate of £642,000 is 21.1% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£365/sq ft) was about 22.8% above the typical sold price in the postcode. One planning record on file: an extension refused in 2012. Most recent transfer: March 2021 at £530,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
What this property has
Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.
Inside
- Bedrooms4
- Dining roomYes
- Utility roomYes
- EnsuiteYes
- StudyYes
Outside
- GarageDouble
Before you decide
Everything you need to know about 21 Allonby Way
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
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
Current Certificate(1 of 3)
Sept 2020
EPC Rating
A
B
C
D
D65
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
4.9 t/year
Occupancy
Owner Occupied
Certificate validity
Valid until 18 September 2030
Property Improvements
Changes detected from historical EPC data
Sept 2020from Aug 2011
Hot Water
Main (No Stat)Main System
Hot water system upgraded
Roof Insulation
PartialInsulated
Roof insulation improved
Low Energy Lighting
79%100%
More low energy lighting installed
Planning history
Applications and permits filed against 21 Allonby Way, Aylesbury, HP21 7JA, sourced from the PlanIt planning register.
1 application on record at 21 Allonby Way, Aylesbury, HP21 7JA
1decisions1extensions2documents3nearby
- Sept 2012ConservatoryAmendmentOutcome in report
Non-material amendment to planning approval 00/02126/APP - Change of one wall of conservatory from framed glass to brick
Extension- Documents
- 2 docs on file
- Reference
- 00/A2126/NON
Unlock 21 Allonby Way, Aylesbury, HP21 7JA's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 3 notable nearby
- The 2 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Versus other Allonby Way homes
Four headline reads against 15 similar houses on this street, drawn from the latest EPC and Land Registry data.
Habitable Rooms for 21 Allonby Way lags the street by a wide margin.
Price per m²
£3,926
Street avg £4,000
Floor Area
135 m²
Street avg 129 m²
Habitable Rooms
5 rooms
Street avg 7 rooms
CO₂ Emissions
4.9 t/year
Street avg 5.0 t/year
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the Aylesbury district page.
Crime
175/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
RC Schools — bus stop.
Closest school
0.2 km
St Joseph's Catholic Infant School. 28 schools nearby.
Nearest schools
- St Joseph's Catholic Infant SchoolPrimary177m
- St Edward's Catholic Junior SchoolPrimary241m
- Broughton Junior SchoolPrimary430m
- Turnfurlong Junior SchoolPrimary484m
Nearest stops
- RC SchoolsBus stop176m
- The Plough PHBus stop234m
- Hazell AvenueBus stop289m
- Limes AvenueBus stop319m
Most reported crime locally
- Violence & Sexual Offences1,227 reports47%
- Anti-social Behaviour278 reports11%
- Other Theft203 reports8%
- Public Order191 reports7%
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
Modelled day and night-time noise levels around HP21 7JA from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
50.7dB
Night-time· 23:00 – 07:00
41.6dB
55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4
Get a survey for this property
Level 3 Building Survey
Late 20th centuryDetached HouseEPC DExtended multiple times (2+ extensions)
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £1,155 · Includes VAT
Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
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Start your researchHow to read this page
Where every figure above comes from, how current it is and what it can't tell you.
- How the estimate is made
- The estimate for 21 Allonby Way is modelled from its 135 m² EPC floor area, its 1 recorded sale and recent sales of comparable homes in HP21 7JA. It is an automated estimate, not a survey or mortgage valuation: condition, layout and improvements that aren't on record can move the real figure either way.
- Where sold prices come from
- Sold prices are HM Land Registry Price Paid Data, which covers residential sales in England and Wales since 1995. 1 sale is recorded for 21 Allonby Way. Sales normally appear two to three months after completion, so the most recent ones take time to show up anywhere.
- Reading the EPC
- Energy Performance Certificates rate homes from A (most efficient) to G and last 10 years. The latest one for 21 Allonby Way was lodged in September 2020 at band D and is valid until September 2030. 3 certificates are on record, which shows how the home has changed.
- Planning records
- Planning applications are collected from local authority registers through PlanIt. 1 application is matched to 21 Allonby Way. Councils sometimes file applications under a different address format, and applications on neighbouring land aren't listed here; the report covers both.
- Area figures
- Crime is police-recorded street-level data over the last 15 months, which places each incident at an approximate point. The 28 schools and 30 stops listed are measured in a straight line from HP21 7JA, not by walking route. Road noise is Defra's strategic noise modelling, averaged across the postcode.
- Council tax band
- 21 Allonby Way is in council tax band F. Bands are set by the Valuation Office Agency from historic values (1 April 1991 in England, 1 April 2003 in Wales), not today's price; the amount you pay depends on the council's rate for the band.
Common questions
The questions buyers, sellers and homeowners most often ask about 21 Allonby Way, Aylesbury, HP21 7JA. Each answer is also embedded as structured data for search engines.
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Keep exploring
- Every home in HP21 7JASold prices, values and energy ratings for the postcode
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- 21 Allonby Way, Aylesbury valuationHow the estimate is built and what moves it
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