18 20, Flat 1, High Street, Carshalton, SM5 3AG
About 18 20
18 20 is a semi-detached house in Carshalton (SM5 3AG). It has a recorded floor area of 60 m² (around 646 sq ft) and construction records dating it to 2003-2006. At 60 m² this is the 5th smallest of 6 units on EPC record in 18 20, where floor areas span 38–73 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (August 2015) shows a C (score 73). The latest certificate is from August 2015, so improvements made since then won't be reflected.
At 60 m² the property is well over the postcode median (45 m² across 42 EPCs), placing it in the larger end of the local stock. 12 planning records sit against the property, 10 approved, 2 refused. Past consents include change of use to residential and subdivision, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations.
Everything you need to know about 18 20
The true value, the hidden risks and the full sale history, in one report.
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The data behind every report
Energy performance
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 16 Aug 2025
EPC Rating
Planning history
Council records show a subdivision application — the property's legal arrangement has been altered.
- Mar 2018RenovationHeritageIn report
Replacement of first floor existing timber windows with uPVC double glazed windows.
New Windows- Documents
- 12 docs on file
- Reference
- C2017/77042
- Mar 2018RenovationFullIn report
Replacement of first floor front elevation timber windows with double glazed uPVC windows.
New Windows- Documents
- 10 docs on file
- Reference
- C2017/77041
We flagged 1 thing worth checking at 18 20
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.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
18 20 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£293,000
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 SM5 3AG: £287,000 (2024–2017).
Nearby sales in SM5 3AG
Versus other High Street homes
18 20 outperforms the street on floor area by a wide margin.
EPC Rating
73 (C)
Street avg 65 (D)
Floor Area
60 m²
Street avg 49 m²
CO₂ Emissions
1.9 t/year
Street avg 2.6 t/year
Habitable Rooms
3 rooms
Street avg 2 rooms
Everything you need to know about 18 20
The true value, the hidden risks and the full sale history, in one report.
30-day money-back guarantee
The data behind every report
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
14/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Carshalton High Street — bus stop.
Closest school
0.2 km
All Saints Carshalton Church of England Primary School. 41 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
54.3dB
Night-time· 23:00 – 07:00
45.3dB