5 Thornbury Square, Islington, London, N6 5YN
About 5 Thornbury Square
5 Thornbury Square is a four-bedroom end-of-terrace house in Islington, London, London (N6 5YN). It has a recorded floor area of 163 m² (around 1755 sq ft), construction records dating it to 1991-1995 and council tax band G. There is a swimming pool on the plot, uncommon for the area. The latest certificate (September 2024) shows a C (score 75), near the top of the C band. When first surveyed in April 2012 the rating was D, the property has climbed 1 band since. Between certificates, lighting went from Very Poor to Very Good. The recommended improvements would push it to B (score 82).
Across 1996–2013, sale prices on this property compounded at 7.5% per year. Today's modelled estimate of £1,741,000 sits 71.9% above the 2013 sale of £1,013,000. On a £-per-square-foot basis, the last sale (£577/sq ft) was about 65.3% above the typical sold price in the postcode. At 163 m² it's 15.2% larger than the typical home in the postcode (142 m² median across 4 EPCs). On the market in July 2013 and unlisted since — roughly 13 years. One historical planning record sits against the property in 2026.
What this property has
Inside
- Bedrooms4
- Dining roomYes
- EnsuiteYes
Outside
- ParkingAllocated
- Swimming poolYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
More low energy lighting installed
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Jan 2026DemolitionFullIn report
Demolition of existing conservatory and replacement extension.
Extension- Documents
- 11 docs on file
- Reference
- P2026/0069/FUL
We flagged 1 thing worth checking at 5 Thornbury Square
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
5 Thornbury Square has more than tripled in price since its earliest registered sale in 1996.
£1,741,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.5% per year over 17 years.
£1,013,000
Growth on file: 7.5% per year over 17 years.
Sales timeline
23 July 2013Most recent
£1,013,000
+245.7%over 17 years16 May 1996
£293,000
Median price across the last 5 sales in N6 5YN: £1,075,000 (2022–2009).
Nearby sales in N6 5YN
11 Thornbury Square, Islington, London, N6 5YN
Sold Sept 2022
£1,350,0007 Thornbury Square, Islington, London, N6 5YN
Sold Oct 2017
£1,075,0001 Thornbury Square, Islington, London, N6 5YN
Sold Feb 2012
£1,000,0004 Thornbury Square, Islington, London, N6 5YN
Sold Aug 2011
£1,175,0009 Thornbury Square, Islington, London, N6 5YN
Sold Aug 2009
£835,000
Versus other Thornbury Square homes
Price per m² for 5 Thornbury Square lags the street by a wide margin.
Price per m²
£6,215
Street avg £8,105
Floor Area
163 m²
Street avg 141 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
4.2 t/year
Street avg 5.1 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
7/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Cromwell Avenue (N6) — bus stop.
Closest school
0.1 km
St Aloysius' College. 65 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
53.8dB

Night-time· 23:00 – 07:00
44.1dB







