31 St Margarets Avenue, Barnet, London, N20 9LL
About 31 St Margarets Avenue
31 St Margarets Avenue is a three-bedroom semi-detached house in Barnet, London, London (N20 9LL). It has a recorded floor area of 93 m² (around 1001 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (January 2021) shows a D (score 65), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since August 2011. The recommended improvements would lift it to B (score 86), a 2-band jump.
Sold April 2021 for £772,000. Across the public record there are 6 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 2003–2021, sale prices on this property compounded at 5.5% per year. On a £-per-square-foot basis, the last sale (£771/sq ft) was about 140.2% above the typical sold price in the postcode. One historical planning record sits against the property in 2019.
What this property has
Inside
- Bedrooms3
- Bathrooms1
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Loft insulation upgraded to recommended levels
Get a survey for this property
Level 3 Building Survey
Because the property has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,360 · Includes VAT
Planning history
- Mar 2019Loft ConversionOutlineIn report
Roof extension involving hip to gable, rear dormer window, 2no front facing rooflights and new side gable window
- Agent
- E.S.P. Building Design Ltd
- Documents
- 8 docs on file
- Reference
- 19/1103/192
We flagged 1 thing worth checking at 31 St Margarets 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
Sale price has at least doubled since 2003.
£825,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.5% per year over 18 years.
£772,000
Growth on file: 5.5% per year over 18 years.
Sales timeline
18 April 2021Most recent
£772,000
+34.3%over 7 years14 March 2014
£575,000
+25.8%over 1 year12 July 2012
£457,000
+1.6%over 1 year25 November 2010
£450,000
-5.3%over 2 years15 July 2008
£475,000
+63.8%over 5 years11 January 2003
£289,950
Median price across the last 5 sales in N20 9LL: £775,000 (2023–2018).
Nearby sales in N20 9LL
Flat 2, 55 St Margarets Avenue, London, N20 9LL
Sold Aug 2023
£450,00013 St Margarets Avenue, Barnet, London, N20 9LL
Sold Mar 2023
£771,00037 St Margarets Avenue, Barnet, London, N20 9LL
Sold Jun 2021
£960,0005 St Margarets Avenue, Barnet, London, N20 9LL
Sold Dec 2020
£895,00041 St Margarets Avenue, Barnet, London, N20 9LL
Sold May 2018
£775,000
Versus other St Margarets Avenue homes
CO₂ Emissions for 31 St Margarets Avenue runs comfortably ahead of the street norm.
Price per m²
£8,301
Street avg £5,140
Floor Area
93 m²
Street avg 121 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.8 t/year
Street avg 5.6 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
4/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Athenaeum Road — bus stop.
Closest school
0.5 km
Alma Primary. 45 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
50.6dB

Night-time· 23:00 – 07:00
42.1dB







