20 King George Avenue, Walton On Thames, KT12 3LP
About 20 King George Avenue
20 King George Avenue is a three-bedroom semi-detached house in Walton On Thames (KT12 3LP). It has a recorded floor area of 120 m² (around 1292 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (July 2017) shows an F (score 38), near the bottom of the EPC scale. The recommended improvements would lift it to C (score 78), a 3-band jump. Other recorded features include a conservatory. The home occupies a cul-de-sac position.
At 120 m² it's 26.3% larger than the typical home in the postcode (95 m² median across 21 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension, a garage conversion and partial demolition, meaningful when judging how the property has evolved. Today's modelled estimate of £676,000 is 25.2% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£418/sq ft) was about 56.9% above the typical sold price in the postcode. 8 years since the last transfer (March 2018).
Know exactly what you're buying at 20 King George Avenue
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
What this property has
Inside
- Bedrooms3
- Open-plan layoutYes
- Dining roomYes
- ConservatoryYes
Outside
- Private gardenRear
- GarageYes
- Cul-de-sacYes
Energy performance
20 King George Avenue sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Planning history
A a garage conversion application was refused at 20 King George Avenue in 2022.
- Jan 2023Garage ConversionFullIn report
Extension: Single storey
Single-storey rear/side extension, conversion of garage into living space and alterations to fenestration following partial demolition of existing house.
ExtensionDemolition- Documents
- 10 docs on file
- Reference
- 2022/3490
- Jun 2022Garage ConversionFullIn report
Extension: Single storey
Single-storey rear/side extension, alteration to side fenestration and conversion of garage to living space following demolition of existing conservatory.
Extension- Documents
- 9 docs on file
- Reference
- 2022/0811
We flagged 2 things worth checking at 20 King George Avenue
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
- Environmental risk flagged
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Sales history & valuation
20 King George Avenue valuation sits well clear of the typical sold price in this postcode.
£676,000
Modelled from EPC, postcode comparables.
£540,000
Recorded with HM Land Registry.
Sales timeline
9 March 2018Most recent
£540,000
Median price across the last 5 sales in KT12 3LP: £635,000 (2025–2017).
Nearby sales in KT12 3LP
6 King George Avenue, Walton On Thames, KT12 3LP
Sold Feb 2025
£600,0008 King George Avenue, Walton On Thames, KT12 3LP
Sold May 2022
£675,0003 King George Avenue, Walton On Thames, KT12 3LP
Sold Dec 2020
£635,00023 King George Avenue, Walton On Thames, KT12 3LP
Sold Mar 2020
£665,0005 King George Avenue, Walton On Thames, KT12 3LP
Sold Dec 2017
£570,000
Everything we know about 20 King George Avenue, 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
- Environmental risk flagged

Versus other King George Avenue homes
CO₂ Emissions for 20 King George Avenue lags the street by a wide margin.
Price per m²
£4,500
Street avg £5,260
Floor Area
120 m²
Street avg 112 m²
Habitable Rooms
6 rooms
Street avg 5 rooms
CO₂ Emissions
8.7 t/year
Street avg 4.9 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Ambleside Avenue — bus stop.
Closest school
0.3 km
Walton Oak Primary School. 13 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
47.8dB

Night-time· 23:00 – 07:00
37.3dB