17 Castle Street, Southampton, SO14 6GZ
About 17 Castle Street
17 Castle Street is a two-bedroom mid-terrace house in Southampton (SO14 6GZ). It has a recorded floor area of 73 m² (around 786 sq ft), construction records dating it to 1900-1929 and council tax band C. Tenure is freehold. The latest certificate (June 2020) shows a C (score 69), just inside the C band. When first surveyed in May 2011 the rating was E, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Very Poor to Good and main heating went from Average to Good. The recommended improvements would push it to B (score 85). Period features are noted in the property record.
Most recent transfer was May 2025 at £273,000 — fresh data. Across the public record there are 4 sales, relatively high churn for a single property. Across 2005–2025, sale prices on this property compounded at 2.6% per year. On a £-per-square-foot basis, the last sale (£347/sq ft) was about 60.3% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms2
- Bathrooms2
- Open-plan layoutYes
Outside
- Private gardenWest-facing
Building
- TenureFreehold
- Heating systemGas
- Period featuresYes
- RefurbishedYes
Everything you need to know about 17 Castle Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Certificate validity
Valid until 26 June 2030
Property Improvements
Changes detected from historical EPC data
Replaced storage heaters with gas boiler
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has been extended more than once, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
17 Castle Street has no planning applications on record.
But the area is active
38 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Latest sale on 17 Castle Street was the highest on Land Registry record across the postcode.
£283,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.6% per year over 20 years.
£273,000
Growth on file: 2.6% per year over 20 years.
Sales timeline
1 May 2025Most recent
£273,000
+17.4%over 4 years26 October 2020
£232,500
+35.2%over 8 years22 April 2012
£172,000
+4.2%over 6 years14 August 2005
£165,000
Median price across the last 5 sales in SO14 6GZ: £232,000 (2023–2018).
Nearby sales in SO14 6GZ
Versus other Castle Street homes
17 Castle Street outperforms the street on price per m² by a wide margin.
Price per m²
£3,740
Street avg £2,984
Floor Area
73 m²
Street avg 76 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
2.4 t/year
Street avg 2.9 t/year
Everything you need to know about 17 Castle Street
The true value, the hidden risks and the full sale history, in one report.
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The data behind every report
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The neighbourhood at a glance
Crime
413/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Denzil Avenue — bus stop.
Closest school
0.3 km
Bevois Town Primary School. 38 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
54.7dB
Night-time· 23:00 – 07:00
44.5dB