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About 21 St Mary Street
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
21 St Mary Street is a three-bedroom semi-detached house in Winchester (SO22 4AQ). It has a recorded floor area of 87 m² (around 936 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (July 2021) shows a C (score 69), just inside the C band. When first surveyed in April 2009 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Average to Good and lighting went from Poor to Good; while wall efficiency dropped from Good to Average. The recommended improvements would push it to B (score 84).
Sale prices here have outpaced Winchester HPI: 3.9% per year against 0% for the wider region. Today's modelled estimate of £436,000 is 13.2% above the 2023 sale price. On a £-per-square-foot basis, the last sale (£411/sq ft) was about 84.7% above the typical sold price in the postcode. Sold June 2023 for £385,000.
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
- Bedrooms3
- Bathrooms1
- Dining roomYes
- Utility roomYes
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)
Jul 2021
EPC Rating
A
B
C
C69
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
3.1 t/year
Occupancy
Rented
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
21 St Mary Street valuation sits well clear of the typical sold price in this postcode.
Current estimate
See how we calculated this£436,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.9% per year over 14 years.
Last sold (2023)
£385,000
Growth on file: 3.9% per year over 14 years.
Sales timeline
Versus other St Mary Street homes
Four headline reads against 27 similar houses on this street, drawn from the latest EPC and Land Registry data.
Price per m² for 21 St Mary Street runs comfortably ahead of the street norm.
Price per m²
£4,425
Street avg £3,028
Floor Area
87 m²
Street avg 86 m²
Habitable Rooms
5 rooms
Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the Winchester district page.
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Road noise across the postcode
Modelled day and night-time noise levels around SO22 4AQ from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
47.5dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 45 points of interest in total.
Beautiful places to visit nearby
Curated scenic spots within reach of this postcode, served by Beautifulplaces.ai. Photography and tagging come from their open dataset.
Common questions
The questions buyers, sellers and homeowners most often ask about 21 St Mary Street, Winchester, SO22 4AQ. Each answer is also embedded as structured data for search engines.