42 Lyonsdown Avenue, New Barnet, Barnet, EN5 1DX
About 42 Lyonsdown Avenue
42 Lyonsdown Avenue is a three-bedroom detached house in New Barnet, Barnet, Barnet (EN5 1DX). It has a recorded floor area of 133 m² (around 1432 sq ft), construction records dating it to 1967-1975 and council tax band G. The latest certificate (September 2023) shows a D (score 59), a step below the typical UK home. When first surveyed in August 2023 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Average. The recommended improvements would lift it to B (score 82), a 2-band jump.
2 planning records sit against the property, 0 approved, 0 refused, 1 pending. An active application for an extension is awaiting a decision. At 133 m² it sits well below the postcode median (252 m² across 12 EPCs), making it one of the more compact homes locally. Today's modelled estimate of £1,283,000 is 11.6% above the 2024 sale price. On a £-per-square-foot basis, the last sale (£803/sq ft) was about 77.9% above the typical sold price in the postcode. Most recent transfer: April 2024 at £1,150,000.
Know exactly what you're buying at 42 Lyonsdown Avenue
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
What this property has
Inside
- Bedrooms3
Energy performance
42 Lyonsdown Avenue's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Cavity wall insulation installed
Planning history
An application for a part-single-part-two-storey side and rear extension is currently awaiting a decision.
- Jan 2026DemolitionFullIn report
Extension: Part single, part two storey · Side and rear of property
Part single, part two storey side and rear extension with new patio area with pergola following demolition of the existing single storey structures
- Agent
- Studio Sharif Ltd
Extension- Documents
- 18 docs on file
- Reference
- 26/0305/HSE
- Sept 2024Garage ConversionOutlineIn report
Conversion of the existing garage into habitable room, insertion of windows to replace the garage door and removal of the side garage door
- Agent
- YOOP Architects
- Documents
- 9 docs on file
- Reference
- 24/3457/192
We flagged 1 thing worth checking at 42 Lyonsdown 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
42 Lyonsdown Avenue valuation sits well clear of the typical sold price in this postcode.
£1,283,000
Modelled from EPC, postcode comparables.
£1,150,000
Recorded with HM Land Registry.
Sales timeline
11 April 2024Most recent
£1,150,000
Median price across the last 5 sales in EN5 1DX: £1,310,000 (2025–2018).
Nearby sales in EN5 1DX
59 Lyonsdown Avenue, New Barnet, Barnet, EN5 1DX
Sold Sept 2025
£1,750,00049 Lyonsdown Avenue, New Barnet, Barnet, EN5 1DX
Sold Feb 2024
£950,00043 Lyonsdown Avenue, New Barnet, Barnet, EN5 1DX
Sold Sept 2022
£1,500,00055 Lyonsdown Avenue, New Barnet, Barnet, EN5 1DX
Sold Mar 2021
£1,310,00037 Lyonsdown Avenue, New Barnet, Barnet, EN5 1DX
Sold Sept 2018
£1,237,500
Everything we know about 42 Lyonsdown Avenue, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Lyonsdown Avenue homes
On price per m², 42 Lyonsdown Avenue stands well clear of the street.
Price per m²
£8,647
Street avg £5,345
Floor Area
133 m²
Street avg 242 m²
Habitable Rooms
6 rooms
Street avg 8 rooms
CO₂ Emissions
6.3 t/year
Street avg 10.9 t/year
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1 County Gate, New Barnet
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Pricklers Hill — bus stop.
Closest school
1.1 km
St Mary's CofE Primary School, East Barnet. 36 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
51.3dB

Night-time· 23:00 – 07:00
41.8dB