11 Janson Road, Southampton, SO15 5FU
About 11 Janson Road
11 Janson Road is a three-bedroom semi-detached house in Southampton (SO15 5FU). It has a recorded floor area of 136 m² (around 1459 sq ft), construction records dating it to 1900-1929 and council tax band D. The latest certificate (July 2010) shows an E (score 50), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 71), a 2-band jump. The latest certificate is from July 2010, so improvements made since then won't be reflected.
Held since October 2010 — that's 16 years off the open market, well above the local norm. Across 1996–2010, sale prices on this property compounded at 11.5% per year. Today's modelled estimate of £380,000 sits 53.2% above the 2010 sale of £248,000. One planning record on file: an extension approved in 2011. Past consents include an extension and a conservatory, meaningful when judging how the property has evolved. It lags the bulk of the postcode on energy efficiency (less efficient than 80% of similar EPCs).
What this property has
Inside
- Bedrooms3
Everything you need to know about 11 Janson Road
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Energy performance
11 Janson Road's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 28 Jul 2020
EPC Rating
Certificate validity
Expired on 28 July 2020
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
11 Janson Road has an approved extension on the planning record.
1 application on record at 11 Janson Road, Southampton, SO15 5FU
- Nov 2011ConservatoryFullOutcome in report
Erection of a rear conservatory (Retrospective).
RetrospectiveExtension- Documents
- 6 docs on file
- Reference
- 11/01500/FUL
Unlock 11 Janson Road, Southampton, SO15 5FU'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- Every decision — granted, refused or withdrawn (1 on record)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 29 notable nearby
- The 6 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
11 Janson Road has more than quadrupled in price since its earliest registered sale in 1996.
£380,000
Modelled from EPC, postcode comparables and a sale-price growth of 11.5% per year over 14 years.
£248,000
Growth on file: 11.5% per year over 14 years.
Sales timeline
7 October 2010Most recent
£248,000
+159.7%over 12 years28 May 1998
£95,500
+76.9%over 1 year26 September 1996
£54,000
Median price across the last 5 sales in SO15 5FU: £372,000 (2025–2021).
Nearby sales in SO15 5FU
Versus other Janson Road homes
On epc rating, 11 Janson Road runs well behind the street norm.
Price per m²
£1,830
Street avg £2,238
Floor Area
136 m²
Street avg 141 m²
Habitable Rooms
6 rooms
Street avg 6 rooms
CO₂ Emissions
7.3 t/year
Street avg 4.6 t/year
Everything you need to know about 11 Janson Road
The true value, the hidden risks and the full sale history, in one report.
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Similar properties nearby
The neighbourhood at a glance
Crime
460/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Grove Road — bus stop.
Closest school
0.4 km
St Mark's Church of England School. 31 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
51.6dB
Night-time· 23:00 – 07:00
41.5dB