13 St Margarets Avenue, Barnet, London, N20 9LL
About 13 St Margarets Avenue
13 St Margarets Avenue is a three-bedroom semi-detached house in Barnet, London, London (N20 9LL). It has a recorded floor area of 90 m² (around 969 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (February 2022) shows an F (score 30), near the bottom of the EPC scale. The recommended improvements would lift it to B (score 83), a 4-band jump. Main heating runs on electricity.
At 90 m² it's 15.9% smaller than the typical home in the postcode (107 m² median across 22 EPCs). On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include a garage conversion and an extension, meaningful when judging how the property has evolved. On a £-per-square-foot basis, the last sale (£796/sq ft) was about 135% above the typical sold price in the postcode. Last sale on file: £771,000 in March 2023.
What this property has
Inside
- Bedrooms3
- Bathrooms1
Outside
- GarageYes
Building
- RefurbishedYes
Energy performance
13 St Margarets Avenue sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,360 · Includes VAT
Planning history
13 St Margarets Avenue has an approved single-storey rear extension on the planning record.
- Feb 2024Garage ConversionFullIn report
Conversion of the existing garage into habitable room, insertion of window to replace garage door
- Documents
- 4 docs on file
- Reference
- 23/5538/HSE
- Jun 2023ExtensionOutlineIn report
Extension: Single storey · Rear of property
Single storey rear extension with a proposed depth of 5.50 metres from original rear wall, maximum height of 3.00 metres and eaves height of 2.95 metres.
- Documents
- 8 docs on file
- Reference
- 23/2056/PNH
We flagged 1 thing worth checking at 13 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
13 St Margarets Avenue valuation sits well clear of the typical sold price in this postcode.
£816,000
Modelled from EPC, postcode comparables.
£771,000
Recorded with HM Land Registry.
Sales timeline
14 March 2023Most recent
£771,000
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
£450,00037 St Margarets Avenue, Barnet, London, N20 9LL
Sold Jun 2021
£960,00031 St Margarets Avenue, Barnet, London, N20 9LL
Sold Apr 2021
£772,0005 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
13 St Margarets Avenue outperforms the street on price per m² by a wide margin.
Price per m²
£8,567
Street avg £5,119
Floor Area
90 m²
Street avg 121 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
10.0 t/year
Street avg 5.2 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







