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Get started21 Cowbridge Lane is a mid-terrace house in Barking (IG11 8LQ). It has a recorded floor area of 110 m² (around 1184 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (June 2020) shows an E (score 54), well below the UK norm with real room to improve. Earlier certificates rated it C (February 2011); the latest reading is 2 bands lower. Between certificates, roof efficiency went from Average to Very Good; while wall efficiency dropped from Good to Poor and hot-water efficiency dropped from Good to Very Poor. The recommended improvements would lift it to B (score 86), a 3-band jump.
It hasn't traded since July 1999, a hold of 27 years that's notably long for the area. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. At 110 m² the property is well over the postcode median (81 m² across 41 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Today's modelled estimate of £314,000 sits 432.2% above the 1999 sale of £59,000. On a £-per-square-foot basis, the last sale (£50/sq ft) was about 71.4% below the postcode norm. One planning record on file: an extension refused in 2012.
21 Cowbridge Lane sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
Council records show a subdivision application — the property's legal arrangement has been altered.
Extension: Single storey · Rear of property
21 Cowbridge Lane's modelled value sits at over four times its earliest registered sale price (1999).
£314,000
Modelled from EPC, postcode comparables.
£59,000
Recorded with HM Land Registry.
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Price per m² for 21 Cowbridge Lane lags the street by a wide margin.
Price per m²
£536
Street avg £2,087
Floor Area
110 m²
Street avg 97 m²
Habitable Rooms
5 rooms
Rail-style transport is unusually close for this postcode.
Crime
7/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Harts Lane Estate — bus stop.

Daytime· 07:00 – 23:00
61.1dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system changed
More low energy lighting installed
Loft insulation upgraded to recommended levels
Are we missing something? Tell us about home improvements to help adjust your valuation.
Erection of single storey rear extension in connection with conversion of house into one-bedroom flat and two-bedroom flat.
9 July 1999Most recent
£59,000
Median price across the last 5 sales in IG11 8LQ: £260,000 (2025–2017).
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Detailed EPC data
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Related properties
Comparable homes and street-level pricing
Full planning history
Every application and decision on record
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Street avg 5 rooms
CO₂ Emissions
6.0 t/year
Street avg 3.0 t/year
Closest school
0.4 km
Northbury Primary School. 65 schools nearby.
Night-time· 23:00 – 07:00
53.6dB