18 20, Flat 3, High Street, Carshalton, SM5 3AG
About 18 20
18 20 is a detached house in Carshalton (SM5 3AG). It has a recorded floor area of 39 m² (around 415 sq ft) and construction records dating it to before 1900. At 39 m² this is the 3rd 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 across 6 units on file. The latest certificate (September 2009) shows a D (score 66), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 72). The latest certificate is from September 2009, so improvements made since then won't be reflected.
14 planning records sit against the property, 12 approved, 2 refused. Past consents include new windows, 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. At 39 m² it's 15.4% smaller than the typical home in the postcode (46 m² median across 42 EPCs).
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
18 20's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 03 Sept 2019
EPC Rating
Planning history
Council records show a subdivision application — the property's legal arrangement has been altered.
- Jul 2018RenovationFullIn report
Replacement of three bay windows at first floor level (like for like using hardwood timber).
New Windows- Documents
- 11 docs on file
- Reference
- DM2018/01043
- Jul 2018RenovationHeritageIn report
Replacement of three bay windows at first floor level (like for like using hardwood timber).
New Windows- Documents
- 10 docs on file
- Reference
- DM2018/01044
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.
£268,000
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
EPC Rating
66 (D)
Street avg 66 (D)
Floor Area
39 m²
Street avg 50 m²
CO₂ Emissions
2.4 t/year
Street avg 2.6 t/year
Habitable Rooms
2 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