9 Althorp Close, Barnet, EN5 2AY
About 9 Althorp Close
9 Althorp Close is a five-bedroom detached house in Barnet (EN5 2AY). It has a recorded floor area of 172 m² (around 1851 sq ft), construction records dating it to 1996-2002 and council tax band H. The latest certificate (August 2016) shows a C (score 71).
2 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension and a garage conversion, meaningful when judging how the property has evolved. Its energy rating outperforms most of the postcode (better than 71% of similar EPCs). 5 bedrooms is on the larger side for this postcode, where 3 is the typical count. Across 1998–2017, sale prices on this property compounded at 6.3% per year. On a £-per-square-foot basis, the last sale (£683/sq ft) was about 213.7% above the typical sold price in the postcode. Last sold in December 2017, so it's been off the market for around 8 years.
Know exactly what you're buying at 9 Althorp 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
- Bedrooms5
- Bathrooms3
Energy performance
EPC Rating
Planning history
- Mar 2018Garage ConversionFullIn report
Extension: Single storey
Single storey side extension including conversion of existing garage to habitable room. Extension to roof including 1no dormer and 1no rooflight to rear elevation and 3no rooflights to front elevation
- Agent
- Mr J Behaim
Extension- Documents
- 6 docs on file
- Reference
- 18/0330/HSE
- Dec 2017Garage ConversionOutlineIn report
Extension: Single storey · Side of property
Single storey side extension including conversion of existing garage to habitable room. Extension to roof including 1no dormer and 1no rooflight to rear elevation and 3no rooflights to front elevationConversion of garage to habitable room - single storey part side extension and installation of rear dormer.
- Agent
- Mr J Benaim
Extension- Documents
- 6 docs on file
- Reference
- 17/7159/192
We flagged 1 thing worth checking at 9 Althorp 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.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
9 Althorp Close has more than tripled in price since its earliest registered sale in 1998.
£1,325,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.3% per year over 19 years.
£1,265,000
Growth on file: 6.3% per year over 19 years.
Sales timeline
20 December 2017Most recent
£1,265,000
+224.4%over 19 years8 September 1998
£390,000
Median price across the last 5 sales in EN5 2AY: £1,200,000 (2021–2011).
Everything we know about 9 Althorp 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
- Larger development activity nearby

Versus other Althorp Close homes
On price per m², 9 Althorp Close stands well clear of the street.
Price per m²
£7,355
Street avg £5,037
Floor Area
172 m²
Street avg 199 m²
Habitable Rooms
9 rooms
Street avg 8 rooms
CO₂ Emissions
5.2 t/year
Street avg 6.8 t/year
Similar properties nearby
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.7 km
Brickfield Lane — bus stop.
Closest school
1.2 km
Mill Hill County High School. 23 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
47.8dB

Night-time· 23:00 – 07:00
39.1dB