12a, The Market, Wrythe Lane, Carshalton, SM5 1AG
About 12a
12a is a semi-detached house in Carshalton (SM5 1AG). It has a recorded floor area of 32 m² (around 344 sq ft), construction records dating it to 2019 and council tax band B. The latest certificate (April 2022) shows a C (score 78), near the top of the C band. When first surveyed in May 2019 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Very Good, roof efficiency went from Very Poor to Very Good and window efficiency went from Average to Very Good; while hot-water efficiency dropped from Very Good to Very Poor and main heating dropped from Good to Very Poor. The recommended improvements would push it to B (score 85). Main heating runs on electricity: electricity, unspecified tariff.
Untraded for 24 years, with the last transfer in December 2001. Today's modelled estimate of £358,000 sits 93.5% above the 2001 sale of £185,000. On a £-per-square-foot basis, the last sale (£537/sq ft) was about 124.5% above the typical sold price in the postcode. At 32 m² it sits well below the postcode median (59 m² across 49 EPCs), making it one of the more compact homes locally.
Energy performance
12a's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system changed
High performance glazing installed
Cavity wall insulation installed
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
12a has no planning applications on record.
Notable planning nearby
5applications of note in the surrounding area
We flagged 2 things worth checking at 12a
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
- Larger development activity nearby
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Sales history & valuation
12a valuation sits well clear of the typical sold price in this postcode.
£358,000
Modelled from EPC, postcode comparables.
£185,000
Recorded with HM Land Registry.
Sales timeline
5 December 2001Most recent
£185,000
Median price across the last 5 sales in SM5 1AG: £330,000 (2022–2019).
Nearby sales in SM5 1AG
24a, The Market, Wrythe Lane, Carshalton, SM5 1AG
Sold Mar 2022
£215,00018a, The Market, Wrythe Lane, Carshalton, SM5 1AG
Sold Nov 2021
£330,00021a, The Market, Wrythe Lane, Carshalton, SM5 1AG
Sold Jun 2020
£450,00040a, The Market, Wrythe Lane, Carshalton, SM5 1AG
Sold Jul 2019
£180,00029 The Market, Wrythe Lane, Carshalton, SM5 1AG
Sold May 2019
£500,000
Similar properties nearby
The neighbourhood at a glance
Crime
14/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Wrythe Lane / Rose Hill Roundabout — bus stop.
Closest school
0.5 km
Malmesbury Primary School. 43 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
54.4dB

Night-time· 23:00 – 07:00
46.6dB







