21 Rosslyn Avenue, East Barnet, Barnet, EN4 8DH
About 21 Rosslyn Avenue
21 Rosslyn Avenue is an end-of-terrace house in East Barnet, Barnet, Barnet (EN4 8DH). It has a recorded floor area of 126 m² (around 1361 sq ft) and council tax band F. The latest certificate (October 2009) shows an E (score 53), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 57). The latest certificate is from October 2009, so improvements made since then won't be reflected.
Held since November 1998 — that's 28 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £679,000 sits 352.7% above the 1998 sale of £150,000. On a £-per-square-foot basis, the last sale (£110/sq ft) was about 78.5% below the postcode norm. 2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension, meaningful when judging how the property has evolved.
Energy performance
21 Rosslyn Avenue's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 29 Oct 2019
EPC Rating
Planning history
21 Rosslyn Avenue has 2 separate extension applications on the council record.
- Apr 2015ExtensionFullIn report
Extension: Rear of property
Two storey rear extension at basement and ground level
- Agent
- TEC architecture Ltd
- Documents
- 8 docs on file
- Reference
- 15/00205/HSE
- Dec 2014ExtensionFullIn report
Extension: Rear of property
Two storey rear extension at basement and ground level
- Agent
- Tec Architecture Ltd
- Documents
- 6 docs on file
- Reference
- B/05529/14
We flagged 1 thing worth checking at 21 Rosslyn Avenue
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
21 Rosslyn Avenue's modelled value sits at over four times its earliest registered sale price (1998).
£679,000
Modelled from EPC, postcode comparables.
£150,000
Recorded with HM Land Registry.
Sales timeline
20 November 1998Most recent
£150,000
Median price across the last 5 sales in EN4 8DH: £950,000 (2025–2022).
Nearby sales in EN4 8DH
Northbury House, Rosslyn Avenue, East Barnet, Barnet, EN4 8DH
Sold Jan 2025
£950,000Ripple House, Rosslyn Avenue, East Barnet, Barnet, EN4 8DH
Sold Jan 2024
£1,100,00025 Rosslyn Avenue, East Barnet, Barnet, EN4 8DH
Sold Oct 2022
£950,0009a, Rosslyn Avenue, East Barnet, Barnet, EN4 8DH
Sold Feb 2022
£750,00023 Rosslyn Avenue, East Barnet, Barnet, EN4 8DH
Sold Feb 2022
£1,050,000
Versus other Rosslyn Avenue homes
Price per m² for 21 Rosslyn Avenue lags the street by a wide margin.
Price per m²
£1,187
Street avg £5,541
Floor Area
126 m²
Street avg 134 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
6.9 t/year
Street avg 6.9 t/year
Similar properties nearby
The neighbourhood at a glance
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.
Closest school
0.2 km
St Mary's CofE Primary School, East Barnet. 40 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
52.2dB

Night-time· 23:00 – 07:00
40.5dB







