20c, High Street, Walton On Thames, KT12 1DA
About 20c
20c is a mid-terrace house in Walton On Thames (KT12 1DA). It has a recorded floor area of 75 m² (around 807 sq ft), construction records dating it to 1930-1949 and council tax band B. The latest certificate (August 2025) shows an E (score 46), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since October 2014. Between certificates, hot-water efficiency went from Very Poor to Average and main heating went from Very Poor to Poor; while wall efficiency dropped from Good to Very Poor and roof efficiency dropped from Good to Poor. Main heating runs on electricity.
Today's modelled estimate of £254,000 sits 69.4% above the 2014 sale of £149,950. On a £-per-square-foot basis, the last sale (£186/sq ft) was about 57.1% below the postcode norm. 11 years since the last transfer (December 2014).
Know exactly what you're buying at 20c
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
20c's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Hot water system changed
Roof insulation improved
Low energy lighting percentage decreased
Planning history
20c has no planning applications on record.
Notable planning nearby
7applications of note in the surrounding area
We flagged 1 thing worth checking at 20c
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
£254,000
Modelled from EPC, postcode comparables.
£149,950
Recorded with HM Land Registry.
Sales timeline
19 December 2014Most recent
£149,950
Median price across the last 4 sales in KT12 1DA: £301,750 (2022–1999).
Everything we know about 20c, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

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The neighbourhood at a glance
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.0 km
High Street — bus stop.
Closest school
0.2 km
Ashley Church of England Primary School. 17 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
50.8dB

Night-time· 23:00 – 07:00
42.3dB