11 & A Half, Upper Maisonette, Highbury Place, Islington, London, N5 1QZ
About 11 & A Half
11 & A Half is a mid-terrace house in Islington, London, London (N5 1QZ). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to before 1900 and council tax band E. The latest certificate (November 2023) shows a C (score 71). The rating has held steady at C across 6 certificates since March 2009. Between certificates, lighting went from Good to Very Good.
One planning record on file: new windows approved in 2024. Past consents include new windows, meaningful when judging how the property has evolved. On a £-per-square-foot basis, the last sale (£1,693/sq ft) was about 256.6% above the typical sold price in the postcode. At 45 m² it's 28.6% smaller than the typical home in the postcode (63 m² median across 37 EPCs). Most recent transfer: January 2019 at £820,000.
Know exactly what you're buying at 11 & A Half
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
More low energy lighting installed
Fuel source changed
Heating controls changed
Hot water efficiency decreased
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
Hot water efficiency improved
Low energy lighting percentage decreased
More low energy lighting installed
Planning history
- Feb 2024RenovationFullIn report
Replacement of 2 no. single glazed timber framed front elevation windows with double glazed timber framed windows
New Windows- Documents
- 15 docs on file
- Reference
- P2023/3330/FUL
What's in 11 & A Half, Upper Maisonette, Highbury Place, Islington, London, N5 1QZ's planning history?
Refusals, disputes and full decisions on this property and nearby, in the report.
Sales history & valuation
11 & A Half valuation sits well clear of the typical sold price in this postcode.
£861,000
Modelled from EPC, postcode comparables.
£820,000
Recorded with HM Land Registry.
Sales timeline
4 January 2019Most recent
£820,000
Median price across the last 5 sales in N5 1QZ: £875,000 (2025–2016).
Nearby sales in N5 1QZ
Flat 4, 1 Highbury Place, Islington, London, N5 1QZ
Sold Jul 2025
£570,000Flat 3, 4 Highbury Place, London, N5 1QZ
Sold Oct 2020
£925,000Flat 2, 8 Highbury Place, Islington, London, N5 1QZ
Sold Feb 2018
£950,000Flat 1, 8 Highbury Place, Islington, London, N5 1QZ
Sold May 2017
£875,000Flat 4, 4 Highbury Place, London, N5 1QZ
Sold Feb 2016
£760,000
Everything we know about 11 & A Half, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
- Am I paying too much?
- Is something wrong with it?
- Is the agent's story true?
- Will it hold its value?
Versus other Highbury Place homes
Price per m² for 11 & A Half runs comfortably ahead of the street norm.
Price per m²
£18,222
Street avg £6,871
Floor Area
45 m²
Street avg 73 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
1.7 t/year
Street avg 2.8 t/year
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
8/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Highbury & Islington Underground Station — subway entrance.
Closest school
0.3 km
Canonbury Primary School. 104 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
56.2dB
Night-time· 23:00 – 07:00
46.6dB