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Get started9 Rosslyn Avenue is a three-bedroom detached house in East Barnet, Barnet, Barnet (EN4 8DH). It has a recorded floor area of 124 m² (around 1335 sq ft), construction records dating it to 1900-1929 and council tax band E. The latest certificate (September 2018) shows an E (score 52), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 79), a 2-band jump.
One planning record on file: an extension approved in 2019. Past consents include an extension, a garage conversion and partial demolition, meaningful when judging how the property has evolved. Today's modelled estimate of £930,000 is 31.9% above the 2018 sale price. Most recent transfer: December 2018 at £705,000.
9 Rosslyn Avenue's carbon output runs well above what efficient homes in the postcode produce.
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
Extension: Part single, part two storey · Rear of property
Part single, part two storey rear extension following demolition of existing conservatory. Conversion of existing garage to habitable room
9 Rosslyn Avenue valuation sits well clear of the typical sold price in this postcode.
£930,000
Modelled from EPC, postcode comparables.
£705,000
Recorded with HM Land Registry.
9 Rosslyn Avenue outperforms the street on habitable rooms by a wide margin.
Price per m²
£5,685
Street avg £5,540
Floor Area
124 m²
Street avg 129 m²
Habitable Rooms
7 rooms
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Littlegrove — bus stop.

Daytime· 07:00 – 23:00
52.2dB

20 December 2018Most recent
£705,000
Median price across the last 5 sales in EN4 8DH: £950,000 (2025–2022).
Northbury House Rosslyn Avenue East Barnet Barnet
Sold Jan 2025
Ripple House Rosslyn Avenue East Barnet Barnet
Sold Jan 2024
25 Rosslyn Avenue East Barnet Barnet
Sold Oct 2022
9a Rosslyn Avenue East Barnet Barnet
Sold Feb 2022
23 Rosslyn Avenue East Barnet Barnet
Sold Feb 2022
Street avg 6 rooms
CO₂ Emissions
7.0 t/year
Street avg 6.7 t/year
EN4 8UN
Closest school
0.2 km
St Mary's CofE Primary School, East Barnet. 40 schools nearby.
Night-time· 23:00 – 07:00
40.5dB
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