21a, Castleton Road, Ilford, IG3 9QW
About 21a
21a is a mid-terrace house in Ilford (IG3 9QW). It has a recorded floor area of 55 m² (around 592 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (March 2025) shows a D (score 59), a step below the typical UK home. When first surveyed in September 2009 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency dropped from Poor to Very Poor and window efficiency dropped from Good to Average. At 55 m² this is the 6th smallest of 24 units on EPC record in the building, where floor areas span 44–186 m². The building's EPC ratings span F to C across 24 units on file.
It hasn't traded since October 2009, a hold of 17 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 55 m² it sits well below the postcode median (116 m² across 23 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £312,000 is 47.9% above the 2009 sale price.
Know exactly what you're buying at 21a
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
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Windows upgraded, improving insulation
Low energy lighting percentage decreased
Heating controls changed
Window efficiency improved
Cavity wall insulation installed
Loft insulation installed or upgraded to 250mm+
More low energy lighting installed
Heating controls upgraded for better temperature management
More low energy lighting installed
Planning history
21a has no planning applications on record.
Notable planning nearby
50applications of note in the surrounding area
We flagged 1 thing worth checking at 21a
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.
- Signs of HMO activity in the area
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Sales history & valuation
The latest sale fell during the post-2008 dip, often a low-water mark in price comparisons.
£312,000
Modelled from EPC, postcode comparables.
£211,000
Recorded with HM Land Registry.
Sales timeline
13 October 2009Most recent
£211,000
Median price across the last 5 sales in IG3 9QW: £655,000 (2025–2017).
Everything we know about 21a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
Versus other Castleton Road homes
On epc rating, 21a runs well behind the street norm.
Price per m²
£3,836
Street avg £4,721
Floor Area
55 m²
Street avg 60 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
3.1 t/year
Street avg 2.0 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
7/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Goodmayes Lane — bus stop.
Closest school
0.2 km
Goodmayes Primary School. 60 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
53.3dB
Night-time· 23:00 – 07:00
43.3dB