21 Cornwood Close, Barnet, London, N2 0HP
About 21 Cornwood Close
21 Cornwood Close is a three-bedroom semi-detached house in Barnet, London, London (N2 0HP). It has a recorded floor area of 110 m² (around 1184 sq ft), construction records dating it to 1900-1929 and council tax band G. The latest certificate (February 2023) shows a D (score 64), on the cusp of jumping into the C band. When first surveyed in February 2015 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Poor to Good, hot-water efficiency went from Poor to Good and lighting went from Very Poor to Very Good. The recommended improvements would lift it to B (score 86), a 2-band jump.
3 planning records sit against the property, 1 approved, 0 refused, 1 pending. Past consents include an extension and a loft conversion, meaningful when judging how the property has evolved. An active application for tree works is awaiting a decision. Across 2015–2023, sale prices on this property compounded at 3.2% per year. On a £-per-square-foot basis, the last sale (£1,045/sq ft) was about 90.8% above the typical sold price in the postcode. Last sale on file: £1,237,500 in July 2023.
Know exactly what you're buying at 21 Cornwood Close
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
- Bathrooms2
- Dining roomYes
- CloakroomYes
- EnsuiteYes
Outside
- Private gardenRear
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Roof insulation improved
More low energy lighting installed
Planning history
- Jan 2025Loft ConversionFullIn report
Roof extension involving side dormer and rear rooflight
- Agent
- Hark Architecture
Extension- Documents
- 8 docs on file
- Reference
- 24/4964/HSE
- Aug 2024Tree WorksTreesIn report
2 x Leylandii - Cut the entire trees to ground level Please see attached Hampstead Garden Suburb Trust report
- Agent
- Custom Cutters Tree Specialists Ltd
- Documents
- 4 docs on file
- Reference
- TCP/0434/24
We flagged 2 things worth checking at 21 Cornwood Close
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.
- Signs of HMO activity in the area
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
21 Cornwood Close saw 3 transfers in just over a decade — high turnover for the postcode.
£1,215,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.2% per year over 8 years.
£1,237,500
Growth on file: 3.2% per year over 8 years.
Sales timeline
2 July 2023Most recent
£1,237,500
+12.5%over 2 years20 August 2020
£1,100,000
+13.4%over 4 years31 August 2015
£970,000
Median price across the last 5 sales in N2 0HP: £1,200,000 (2024–2021).
Nearby sales in N2 0HP
20 Cornwood Close, Barnet, London, N2 0HP
Sold Oct 2024
£1,650,000Cornwood House, Flat B, Cornwood Close, Barnet, London, N2 0HP
Sold Oct 2022
£700,0004 Cornwood Close, Barnet, London, N2 0HP
Sold Jul 2022
£1,550,0007 Cornwood Close, Barnet, London, N2 0HP
Sold Jan 2022
£1,200,00013 Cornwood Close, Barnet, London, N2 0HP
Sold Oct 2021
£1,180,000
Everything we know about 21 Cornwood Close, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby

Versus other Cornwood Close homes
On co₂ emissions, 21 Cornwood Close stands well clear of the street.
Price per m²
£11,250
Street avg £8,718
Floor Area
110 m²
Street avg 130 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
4.6 t/year
Street avg 6.8 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Monarch Court — bus stop.
Closest school
0.7 km
The Archer Academy. 47 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
52.7dB

Night-time· 23:00 – 07:00
42.3dB