5 Clock House, Tatchbury Mount, Calmore, Southampton, SO40 2RN
About 5 Clock House
5 Clock House is a semi-detached house in Calmore, Southampton, Southampton (SO40 2RN). It has a recorded floor area of 47 m² (around 506 sq ft), construction records dating it to 1996-2002 and council tax band B. At 47 m² this is the 3rd smallest of 7 units on EPC record in the building, where floor areas span 42–62 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (February 2025) shows a C (score 74). The rating has held steady at C across 2 certificates since September 2010. Between certificates, lighting went from Average to Very Good.
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.
Energy performance
5 Clock House's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
More low energy lighting installed
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Planning history
5 Clock House has a listed-building consent on record — alterations to a listed property are tightly controlled.
1 application on record at 5 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 5 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- Every decision — granted, refused or withdrawn (1 on record)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
5 Clock House has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£163,000
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
5 Clock House outperforms the street on co₂ emissions by a wide margin.
EPC Rating
74 (C)
Street avg 70 (C)
Floor Area
47 m²
Street avg 53 m²
CO₂ Emissions
1.5 t/year
Street avg 2.1 t/year
Habitable Rooms
3 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Crime
4/mo
Steady 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







