1a, Red House Lane, Walton On Thames, KT12 1EF
About 1a
1a is a five-bedroom detached house in Walton On Thames (KT12 1EF). It has a recorded floor area of 204 m² (around 2196 sq ft) and construction records dating it to 1976-1982. The latest certificate (May 2025) shows a D (score 65), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since October 2013. Between certificates, lighting went from Very Poor to Average; while wall efficiency dropped from Good to Average. The recommended improvements would push it to C (score 78).
It hasn't traded since December 2002, a hold of 23 years that's notably long for the area. Today's modelled estimate of £1,488,000 sits 140% above the 2002 sale of £620,000. On a £-per-square-foot basis, the last sale (£282/sq ft) was about 24.3% below the postcode norm. One planning record on file: an extension approved in 2005. Past consents include an extension, meaningful when judging how the property has evolved.
Know exactly what you're buying at 1a
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
- Bedrooms5
- Bathrooms2
- Open-plan layoutYes
- Dining roomYes
- CloakroomYes
Outside
- Private gardenSouth-facing
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Planning history
1a has an approved side extension on the planning record.
- Feb 2005ExtensionFullIn report
Extension: Side of property
Single storey side extension
- Documents
- 3 docs on file
- Reference
- 2005/0004
We flagged 1 thing worth checking at 1a
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
1a valuation sits well clear of the typical sold price in this postcode.
£1,488,000
Modelled from EPC, postcode comparables.
£620,000
Recorded with HM Land Registry.
Sales timeline
6 December 2002Most recent
£620,000
Median price across the last 5 sales in KT12 1EF: £895,000 (2019–2011).
Nearby sales in KT12 1EF
13 Red House Lane, Walton On Thames, KT12 1EF
Sold Nov 2019
£1,225,00012 Red House Lane, Walton On Thames, KT12 1EF
Sold Jun 2019
£1,050,00011 Red House Lane, Walton On Thames, KT12 1EF
Sold Jan 2014
£895,0007 Red House Lane, Walton On Thames, KT12 1EF
Sold Dec 2011
£650,0003 Red House Lane, Walton On Thames, KT12 1EF
Sold Oct 2006
£760,000
Everything we know about 1a, 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

Versus other Red House Lane homes
Price per m² for 1a lags the street by a wide margin.
Price per m²
£3,039
Street avg £4,799
Floor Area
204 m²
Street avg 189 m²
Habitable Rooms
7 rooms
Street avg 7 rooms
CO₂ Emissions
5.6 t/year
Street avg 6.4 t/year
Similar properties nearby
1 Grange Court
KT12 1JD
1 Grange Place
KT12 1HA
1 Ashley Drive
KT12 1JL
1 Oakfields
KT12 1EG
1 Hawthorne Lodge, Ashley Road
KT12 1JA
1 Alexandra Close
KT12 1LR
1 Gainsborough Court
KT12 1NH
1 Ashley Park Crescent
KT12 1EX
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
0.2 km
Stompond Lane — bus stop.
Closest school
0.3 km
Ashley Church of England Primary School. 15 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
50.1dB

Night-time· 23:00 – 07:00
42.0dB