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Solar panels
About 21 Castle Street
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
21 Castle Street is a four-bedroom mid-terrace house in Southampton (SO14 6GZ). It has a recorded floor area of 90 m² (around 969 sq ft), construction records dating it to 1900-1929 and council tax band C. The property has solar panels on record, all of which lower running costs and tend to lift resale appeal. The latest certificate (June 2024) shows a C (score 71). The rating has held steady at C across 2 certificates since November 2013. Between certificates, lighting went from Average to Very Good; while roof efficiency dropped from Average to Poor. The recommended improvements would push it to B (score 84).
Sale prices here have outpaced Southampton HPI: 6.1% per year against 0% for the wider region. Today's modelled estimate of £296,000 is 41% above the 2017 sale price. At 90 m² it's 20.8% larger than the typical home in the postcode (75 m² median across 8 EPCs). Last changed hands 9 years ago, in January 2017.
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
- Bathrooms2
Building
- Solar panelsYes
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 2)
Jun 2024
EPC Rating
A
B
C
C71
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Average
CO2 Emissions
2.7 t/year
Occupancy
Owner Occupied
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
Sale price has at least doubled since 2001.
Current estimate
See how we calculated this£296,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.1% per year over 15 years.
Last sold (2017)
£210,000
Growth on file: 6.1% per year over 15 years.
Sales timeline
Versus other Castle Street homes
Four headline reads against 8 similar houses on this street, drawn from the latest EPC and Land Registry data.
On price per m², 21 Castle Street runs well behind the street norm.
Price per m²
£2,333
Street avg £3,185
Floor Area
90 m²
Street avg 74 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 Southampton district page.
Reported crime in the wider district is trending notably upward year-on-year.
Crime
9/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Road noise across the postcode
Modelled day and night-time noise levels around SO14 6GZ from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
54.7dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 68 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 Castle Street, Southampton, SO14 6GZ. Each answer is also embedded as structured data for search engines.