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Get started21 Avarn Road is a mid-terrace house in Wandsworth, London, London (SW17 9HB). It has a recorded floor area of 46 m² (around 495 sq ft), construction records dating it to 1900-1929 and council tax band C. At 46 m² this is the smallest unit on EPC record across the building (46–127 m²). The building's EPC ratings span F to C across 36 units on file. The latest certificate (May 2020) shows a D (score 68), on the cusp of jumping into the C band. When first surveyed in July 2011 the rating was F, the property has climbed 2 bands since. Between certificates, window efficiency went from Very Poor to Average, hot-water efficiency went from Average to Good and lighting went from Poor to Very Good. The recommended improvements would push it to C (score 75).
Sale prices here have outpaced London HPI: 11.7% per year against 0% for the wider region. Today's modelled estimate of £374,000 is 16% below the 2020 sale of £445,000, running counter to the wider postcode trend, which makes the EPC and condition history especially worth a look. On a £-per-square-foot basis, the last sale (£899/sq ft) was about 133.5% above the typical sold price in the postcode. At 46 m² it sits well below the postcode median (68 m² across 35 EPCs), making it one of the more compact homes locally. Most recent transfer: February 2020 at £445,000.
Price for 21 Avarn Road has grown more than fourfold since the 1997 starting point.
£374,000
Modelled from EPC, postcode comparables and a sale-price growth of 11.7% per year over 22 years.
£445,000
Growth on file: 11.7% per year over 22 years.
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Detailed AI analysis
21 Avarn Road is notably below the street on floor area.
Price per m²
£9,674
Street avg £6,857
Floor Area
46 m²
Street avg 74 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
Rail-style transport is unusually close for this postcode.
Crime
8/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Amen Corner — bus stop.

Daytime· 07:00 – 23:00
54.2dB

Changes detected from historical EPC data
Upgraded to gas central heating
Connected to mains gas supply
Heating controls upgraded for better temperature management
Hot water system upgraded
Windows upgraded, improving insulation
Floor insulation added or improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
17 February 2020Most recent
£445,000
+1071.1%over 22 years23 December 1997
£38,000
Median price across the last 5 sales in SW17 9HB: £570,000 (2025–2024).
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Detailed EPC data
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Every application and decision on record
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CO₂ Emissions
1.9 t/year
Street avg 3.1 t/year
SW17 9DH
Closest school
0.4 km
Sellincourt Primary School. 56 schools nearby.
Night-time· 23:00 – 07:00
43.4dB