12 St Cosmas Close, Challock, Ashford, TN25 4BX
About 12 St Cosmas Close
12 St Cosmas Close is a mid-terrace house in Challock, Ashford, Ashford (TN25 4BX). It has a recorded floor area of 37 m² (around 398 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (October 2024) shows a C (score 75), near the top of the C band. When first surveyed in December 2022 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Good to Very Good and main heating went from Average to Good. The recommended improvements would lift it to A (score 97), a 2-band jump. Main heating runs on electricity.
Its energy rating outperforms most of the postcode (better than 73% of similar EPCs).
Energy performance
12 St Cosmas Close's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Heat pump installed, significantly improving energy efficiency
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
Loft insulation upgraded to recommended levels
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
12 St Cosmas Close has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
12 St Cosmas Close has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£200,000
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 5 sales in TN25 4BX: £287,500 (2024–2012).
Nearby sales in TN25 4BX
6 St Cosmas Close, Challock, Ashford, TN25 4BX
Sold Feb 2024
£360,00010 St Cosmas Close, Challock, Ashford, TN25 4BX
Sold Feb 2022
£325,0004 St Cosmas Close, Challock, Ashford, TN25 4BX
Sold Apr 2014
£136,0005 St Cosmas Close, Challock, Ashford, TN25 4BX
Sold May 2012
£195,0007 St Cosmas Close, Challock, Ashford, TN25 4BX
Sold Dec 2008
£200,000
Versus other St Cosmas Close homes
CO₂ Emissions for 12 St Cosmas Close runs comfortably ahead of the street norm.
EPC Rating
75 (C)
Street avg 64 (D)
Floor Area
37 m²
Street avg 58 m²
CO₂ Emissions
1.3 t/year
Street avg 3.3 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.5 km
The Stag — bus stop.
Closest school
0.1 km
Challock Primary School. 1 school 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
45.7dB

Night-time· 23:00 – 07:00
38.9dB







