17 Cornwallis Square
N19 4LY
- Flat
- 2 bedrooms (estimate)
- 635 sq ft
- EPC C
What comparable sales show
Few close matches: a rough guide£466,000
Range £354,000 to £577,000 · £733 per sq ft
Rank in N19 4LY
12th of 22
Postcode average £628,636
From completed sales of similar homes nearby, adjusted for floor area. It cannot see condition, layout or recent work, so it is not a valuation.
In short
17 Cornwallis Square is a 2 bedroom flat in N19 of about 635 sq ft.
Comparable completed sales nearby put it at £354,000 to £577,000, about £466,000 in the middle.
That makes it the 12th highest of the 22 homes we can compare in N19 4LY, where the middle figure averages £628,636.
Across Islington, average prices fell 8.6% in the year to August 2026.
Where in the range would yours sell?
Condition and improvements usually decide it, and only someone who sees the home can say.
Lower end
£354,000
Middle
£466,000
Upper end
£577,000
Done work since the records were made? Claim your home and tell us, or ask local agents where yours sits.
Sale history
Every sale of this home registered with HM Land Registry since 1995
No sale of this home has been registered since 1995.
Homes in N19 4LY
Ranked by what comparable sales show. Choose one to see its page.
- 11 Cornwallis SquareSemi-detachedSold May 1996 for £140k£1,171,000#1
- 12 Cornwallis Square Islington LondonTerracedSold Jul 1996 for £134k£1,089,000#2
- 2 Cornwallis SquareTerracedSold Oct 2004 for £350k£993,000#3
- 10 Cornwallis SquareTerracedSold Aug 2005 for £365k£989,000#4
- 13 Cornwallis SquareTerracedSold Jan 1998 for £152k£989,000#5
- 8 Cornwallis SquareTerraced · 4 bed · 1,163 sq ftSold Jul 2025 for £930k£930,000#6
- 9 Cornwallis SquareTerracedSold Jun 2000 for £228k£925,000#7
- 4 Cornwallis SquareTerracedSold Dec 2014 for £725k£879,000#8
- 7 Cornwallis SquareTerracedSold Oct 2022 for £895k£867,000#9
- 5 Cornwallis Square Islington LondonTerracedSold Sept 2014 for £685k£799,000#10
- 3 Cornwallis SquareTerracedSold May 2015 for £626k£713,000#11
- 17 Cornwallis Square (this home)Flat · 2 bed · 635 sq ft£466,000#12
- 52 Cornwallis Square Islington LondonTerracedSold Nov 2022 for £369k£368,000#13
- 28 Cornwallis SquareFlatSold Jan 2000 for £100k£358,000#14
- 27 Cornwallis SquareFlatSold Aug 2004 for £165k£347,000#15
- 31 Cornwallis SquareFlatSold Dec 1998 for £75k£345,000#16
- 54 Cornwallis SquareFlatSold Jan 2015 for £320k£329,000#17
- 51 Cornwallis SquareFlatSold Apr 2004 for £149k£325,000#18
- 29 Cornwallis SquareFlatSold Jun 1997 for £60k£320,000#19
- 26 Cornwallis SquareFlatSold Sept 2025 for £335k£308,000#20
- 50 Cornwallis SquareFlatSold Dec 2002 for £68k£161,000#21
- 49 Cornwallis SquareFlatSold Jun 2005 for £76k£159,000#22
- 1 Cornwallis Square–
- 6 Cornwallis SquareTerracedSold Aug 2026 for £970k–
- 14 Cornwallis Square–
- 15 Cornwallis Square–
- 16 Cornwallis Square–
- 18 Cornwallis Square–
- 19 Cornwallis Square–
- 20 Cornwallis Square–
- 21 Cornwallis Square–
- 22 Cornwallis Square–
- 23 Cornwallis Square–
- 24 Cornwallis Square–
- 25 Cornwallis Square–
- 33 Cornwallis Square–
- 34 Cornwallis Square–
- 35 Cornwallis Square–
- 37 Cornwallis Square–
- 38 Cornwallis Square–
- 40 Cornwallis Square–
- 42 Cornwallis Square–
- 43 Cornwallis Square–
- 44 Cornwallis Square–
- 45 Cornwallis Square–
- 46 Cornwallis Square–
- 47 Cornwallis Square–
- 48 Cornwallis Square–
- 53 Cornwallis Square–
- Top Floor Flat 30 Cornwallis Square–
The completed sales behind the figure
Similar homes nearby, registered with HM Land Registry. Choose one to see its page.
| Home | Price | Sold | Size | Per sq ft | Away |
|---|---|---|---|---|---|
| 46C Kingsdown RoadN19 4LA · Flat | £460,000 | Sept 2025 | 657 sq ft | £701 | 0.1 mi |
| Flat 1, 55 St Johns VillasN19 3EE · Flat | £197,500 | Feb 2026 | 603 sq ft | £328 | 0.2 mi |
| Flat 107, Blenheim Court Marlborough RoadN19 4HU · Flat | £520,000 | Jun 2026 | 829 sq ft | £627 | 0.1 mi |
| 68E Marlborough RoadN19 4NJ · Flat | £530,000 | Aug 2025 | 710 sq ft | £746 | 0.1 mi |
| Flat A, 44 Davenant RoadN19 3NN · Flat | £505,300 | Mar 2026 | 495 sq ft | £1,021 | 0.1 mi |
| 49B Tollington WayN7 6RG · Flat | £525,000 | Apr 2026 | 732 sq ft | £717 | 0.2 mi |
| 3 Jutland CloseN19 4BE · Flat | £470,000 | Sept 2025 | 646 sq ft | £728 | 0.2 mi |
| Flat 25, Norcombe House Wedmore StreetN19 4RD · Flat | £360,000 | Sept 2025 | 624 sq ft | £577 | 0.2 mi |
| Flat B, 64 Marlborough RoadN19 4NJ · Flat | £626,500 | Dec 2025 | 807 sq ft | £776 | 0.1 mi |
| Flat 3, 57 St Johns VillasN19 3EE · Flat | £700,000 | Apr 2026 | 753 sq ft | £929 | 0.2 mi |
| 170A Marlborough RoadN19 4NP · Flat | £325,000 | Dec 2025 | 538 sq ft | £604 | 0.2 mi |
| 63 Mowatt CloseN19 3XZ · Flat | £284,400 | Mar 2026 | 538 sq ft | £528 | 0.2 mi |
What buyers have paid in N19
Completed sales in the last 12 months, against the 12 months before
| Type | Sales | Average price | Average size | Per sq ft | On the year |
|---|---|---|---|---|---|
| All homes | 166 | £712,765 | 895 sq ft | £816 | −2.5% |
| Flats | 121 | £540,483 | 687 sq ft | £772 | +1.1% |
| Terraced | 36 | £1,192,420 | 1,456 sq ft | £906 | +0.6% |
| Semi-detached | 3 | £1,784,167 | – | – | +16.3% |
| Detached | 1 | £2,250,000 | – | – | – |
Contains HM Land Registry data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0.
Energy performance data © Crown copyright. Licensed under the Open Government Licence v3.0.
Floor area and energy rating from the energy certificate of October 2014.
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