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21 Castle Street, Aylesbury, HP20 2RE
This 133 square metre property in Aylesbury carries an energy performance rating of D, in line with typical UK homes. It is heated by a gas central heating system and is currently listed as owner-occupied. The property last sold for £309,950 in 2020.
Property Type
Mid-Terrace House
Bedrooms
3
Bathrooms
1
Floor Area
133 m²
Council Tax
Band D
Property Features
Built 1930–1949
Private Garden
Rear
Allocated Parking
Gas Heating
Fireplace
Working or decorative fireplace
Balcony
Private outdoor balcony space
Recently Refurbished
Renovated and updated
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Energy Performance
EPC rating and efficiency details
Current Certificate(1 of 2)
Dec 2019
EPC Rating
A
B
C
D
D60
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
5.3 t/year
Tenure
Owner Occupied
Property Improvements
Changes detected from historical EPC data
Dec 2019from Oct 2009
EPC improved fromE49toD60
Heating Controls
Prog + TRVsFull
Heating controls upgraded for better temperature management
Hot Water
Very GoodGood
Hot water efficiency decreased
Windows
SecondaryFull Double
Windows upgraded, improving insulation
Roof
Very PoorAverage
Roof insulation improved
Low Energy Lighting
0%73%
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Price & History
Transactions and market trends
Estimated value
£406,000
How our AI predicts property prices · Accurate to within 10%
Automated estimate only. For an accurate valuation, consult a surveyor or estate agent.
Transaction history
+18.8%(10y)
£309,950Latest
May 2020£261,000
Jan 2010£230,000
Oct 2005Source: HM Land Registry
Nearby in HP20 2RE
5a Castle Street Aylesbury HP20 2RE
Mar 2024
£220,000
5 Castle Street Aylesbury HP20 2RE
Aug 2021
£342,000
3 Castle Street Aylesbury HP20 2RE
Mar 2019
£280,000
1 Castle Street Aylesbury HP20 2RE
Oct 2017
£285,000
1 Archways Castle Street Aylesbury HP20 2RE
Jan 2017
£315,000
23 Castle Street Aylesbury HP20 2RE
May 2003
£415,000
1 / 2
House Price Index
England+1.5%
101.6
Jan 26
UK HPI from HM Land Registry. Baseline: Jan 2015 = 100.
How This Property Compares on Castle Street
See how this property stacks up against others nearby
Comparing to 8 other houses on this street
Price per m²
Property value per square metre of floor space
£2,330/£3,674 avg
LowerHigher
Higher than only 20% of similar properties
Years Held
Time since last sale — indicates ownership stability
6 years/10 years avg
ShorterLonger
Around average
EPC Rating
Government energy efficiency score (1–100)
60 (D)/50 (E) avg
Less efficientMore efficient
More efficient than 75% of similar properties
Floor Area
Total internal floor space
133 m²/86 m² avg
SmallerLarger
Larger than 88% of similar properties
CO₂ Emissions
Annual carbon output from heating, hot water & lighting
5.3 t/year/5.1 t/year avg
Higher emissionsLower emissions
Lower emissions than only 25% of similar properties
Habitable Rooms
Living spaces like bedrooms & living rooms
5 rooms/4 rooms avg
FewerMore
More rooms than 75% of similar properties
Comparisons are based on the most recent EPC data for each property in this postcode. Only similar property types (houses) are compared.
Get alerts for HP20 2RE
New sales, price changes, and market updates in this area
Places to visit
Road Noise
Average road noise levels for this postcode
Daytime
07:00 – 23:00
55.4dB
Moderate
Night-time
23:00 – 07:00
46.0dB
Low55 dB
60 dB
65 dB
70 dB
75 dB
80 dB
Defra Road Noise Strategic Mapping, Round 4Crime Analysis
12 months of data for Aylesbury
Total Crimes
80
Monthly Avg
7
Recent Trend
Rising
Most Common
Violence & Sexual
Crime by Category
Violence & Sexual34(43%)
Shoplifting9(11%)
Public Order7(9%)
Drugs7(9%)
Other Theft6(8%)
Criminal Damage & Arson4(5%)
Robbery3(4%)
Burglary3(4%)
Theft from Person2(3%)
Other Crime2(3%)
Bicycle Theft2(3%)
Weapons1(1%)
Recent Incidents
Violence & Sexual
Dec 2025On or near Barnsbury Avenue
Public Order
Nov 2025On or near Buckingham Street
Violence & Sexual
Nov 2025On or near Buckingham Street
Violence & Sexual
Nov 2025On or near Buckingham Street
Theft from Person
Nov 2025On or near Buckingham Street
Other Theft
Nov 2025On or near Barnsbury Avenue
Data from Police UK • Updated monthly
Local Amenities
Schools and transport links nearby
Nearby Schools
27 within 3kmP
Bearbrook Combined School
777m
9 mins
P
Oak Green School
793m
10 mins
P
Elmhurst School
872m
11 mins
S
Buckinghamshire College Group
586m
7 mins
S
Sir Henry Floyd Grammar School
695m
8 mins
S
Aylesbury UTC
835m
10 mins
Transport Links
30 within 3kmMorrisons
Bus Stop163m
2 mins
Friarage Road
Bus Stop199m
2 mins
Great Western Street
Bus Stop205m
2 mins
Bus Station
Bus Stop220m
3 mins
Aylesbury Bus Stn
Bus Station260m
3 mins
Aylesbury Rail Station
Rail302m
4 mins
School data from Dept. for Education • Transport data from NaPTAN
Nearby Property Businesses
Local professionals serving this area
Surveyor
COR Building Surveys
Buckinghamshire
RICS
Surveyor
Mark Izzard Cost Consultancy Ltd.
Aylesbury
RICSResidential
Surveyor
J Nettleton Surveyors
Aylesbury
RICS
Surveyor
Christopher Pallet Professional Services LLP
Aylesbury
RICSResidential
Surveyor
Houzecheck Surveying Ltd
Aylesbury
RICSResidential
Surveyor
Elson Project Management Limited
Aylesbury
RICSResidential
Surveyor
Lexington Surveyors Ltd
Aylesbury
RICSResidential
Surveyor
Hillbreak
Aylesbury
RICS
Map
57 points of interest nearby
Map data from OpenStreetMap • Transport data from NaPTAN • School data from Dept. for Education • Scenic data from Beautifulplaces.ai
Frequently Asked Questions
Common questions about this property