8 Clock House, Tatchbury Mount, Calmore, Southampton, SO40 2RN
About 8 Clock House
8 Clock House is a detached house in Calmore, Southampton, Southampton (SO40 2RN). It has a recorded floor area of 62 m² (around 667 sq ft), construction records dating it to 1983-1990 and council tax band B. The latest certificate (September 2025) shows a C (score 75), near the top of the C band. The rating has held steady at C across 2 certificates since September 2014. Between certificates, roof efficiency went from Average to Good; while window efficiency dropped from Average to Poor.
One planning record on file: an extension approved in 2002. Past consents include an extension, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations. At 62 m² it's 16.9% larger than the typical home in the postcode (53 m² median across 7 EPCs).
Energy performance
EPC Rating
Certificate validity
Valid until 7 September 2035
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Loft insulation upgraded to recommended levels
More low energy lighting installed
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Planning history
8 Clock House has a listed-building consent on record — alterations to a listed property are tightly controlled.
1 application on record at 8 Clock House, Tatchbury Mount, Calmore, Southampton, SO40 2RN
- Jun 2002ExtensionHeritageOutcome in report
Extension: Two storey
2 storey addition and alterations in relation to a conversion of existing building to form residential units. (Revision to Listed Building Consent 67752) (Listed Building Application)
Listed- Reference
- 02/74257
Unlock 8 Clock House, Tatchbury Mount, Calmore, Southampton, SO40 2RN's full planning history
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- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 2 notable nearby
- What the pattern means for extending or converting here
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Sales history & valuation
8 Clock House has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£209,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 4 sales in SO40 2RN: £360,000 (2015–1999).
Versus other Tatchbury Mount homes
Floor Area for 8 Clock House runs comfortably ahead of the street norm.
EPC Rating
75 (C)
Street avg 70 (C)
Floor Area
62 m²
Street avg 51 m²
CO₂ Emissions
1.6 t/year
Street avg 2.0 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Crime
229/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
Woodhaven & Ashford — bus stop.
Closest school
1.0 km
Calmore Infant School. 10 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
52.2dB

Night-time· 23:00 – 07:00
43.9dB







