Flat 15 15 Belsize Avenue
NW3 4BL
- Flat
- 1 bedroom (estimate)
- 517 sq ft
- EPC C
What comparable sales show
Fair match£532,000
Range £442,000 to £622,000 · £1,030 per sq ft
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
Flat 15 15 Belsize Avenue is a 1 bedroom flat in NW3 of about 517 sq ft.
Comparable completed sales nearby put it at £442,000 to £622,000, about £532,000 in the middle.
Across Camden, average prices fell 10.6% 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
£442,000
Middle
£532,000
Upper end
£622,000
Done work since the records were made? Claim your home and tell us, or ask local agents where yours sits.
Belsize Avenue at a glance
Completed sales on the road in the last two years
Sales
21
Average price
£768k
Average size
722 sq ft
Per sq ft
£925
Price range
£360k to £1.88m
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 NW3 4BL
Ranked by what comparable sales show. Choose one to see its page.
- Flat 1 21 Belsize AvenueFlatSold May 2022 for £3.85m£3,606,000#1
- Flat 1 31 Belsize AvenueFlatSold Jun 2021 for £1.85m£1,771,000#2
- 25a Belsize AvenueFlatSold Sept 2009 for £940k£1,531,000#3
- 25b Belsize AvenueFlatSold May 2012 for £1.13m£1,526,000#4
- First Floor Flat 29 Belsize AvenueFlatSold Feb 2021 for £1.32m£1,307,000#5
- 25c Belsize AvenueFlatSold Jan 2023 for £1.42m£1,298,000#6
- 23a Belsize AvenueFlatSold Mar 2012 for £930k£1,279,000#7
- Flat 3 11 Belsize AvenueFlatSold Jun 2000 for £425k£1,254,000#8
- Flat 4 1 Belsize AvenueFlatSold Mar 2001 for £425k£1,200,000#9
- Flat 2 31 Belsize AvenueFlatSold Apr 2024 for £1.20m£1,176,000#10
- 25d Belsize AvenueFlatSold Jul 2008 for £774k£1,143,000#11
- 23b Belsize AvenueFlatSold Mar 2021 for £1.12m£1,091,000#12
- 9c Belsize AvenueFlatSold Jul 2016 for £1.02m£1,057,000#13
- Flat 2 21 Belsize AvenueFlatSold Jul 2000 for £360k£1,052,000#14
- Flat 4 11 Belsize AvenueFlatSold Mar 2024 for £1.08m£1,045,000#15
- Flat 1 3 Belsize AvenueFlatSold Aug 2015 for £1.07m£1,027,000#16
- Flat 2 1 Belsize AvenueFlatSold Dec 2013 for £870k£1,015,000#17
- Flat 3 1 Belsize AvenueFlatSold Mar 2015 for £970k£1,003,000#18
- Basement Flat 3 Belsize AvenueFlatSold Jul 2013 for £850k£974,000#19
- First Floor Flat 9 Belsize AvenueFlatSold Feb 2005 for £425k£949,000#20
- 9b Belsize AvenueTerracedSold Aug 2024 for £885k£872,000#21
- First Floor Flat 7 Belsize AvenueFlatSold Jun 2019 for £928k£832,000#22
- Flat 3, 5 Belsize AvenueFlat · 2 bed · 840 sq ftSold Feb 2025 for £1.14m£764,000#23
- Flat 2 11 Belsize AvenueFlatSold Nov 2006 for £389k£732,000#24
- Flat 2 3 Belsize AvenueFlatSold Feb 1999 for £154k£683,000#25
- Flat 4 3 Belsize AvenueFlatSold Dec 2003 for £278k£654,000#26
- 9e Belsize AvenueFlatSold Aug 2019 for £700k£626,000#27
- Flat 5 21 Belsize AvenueFlatSold Jan 2021 for £622k£611,000#28
- Flat 4 21 Belsize AvenueFlatSold Jun 2000 for £200k£590,000#29
- Flat 4 27 Belsize AvenueFlatSold Sept 2024 for £625k£584,000#30
- Flat 5 3 Belsize AvenueFlatSold Feb 1999 for £130k£576,000#31
- Flat 6 27 Belsize AvenueFlatSold May 1997 for £111k£574,000#32
- Flat 3, 21 Belsize AvenueFlat · 1 bed · 549 sq ftSold Mar 2025 for £550k£550,000#33
- Flat 5 11 Belsize AvenueFlatSold Mar 2005 for £250k£547,000#34
- Flat 2 5 Belsize AvenueFlatSold Jun 2022 for £560k£528,000#35
- Basement Flat 33 Belsize AvenueFlatSold Aug 1998 for £120k£525,000#36
- Flat 7 15 Belsize AvenueFlatSold Apr 2004 for £230k£522,000#37
- Flat 7 5 Belsize AvenueFlatSold Jun 2021 for £535k£512,000#38
- Flat 5 5 Belsize AvenueFlatSold Jul 2023 for £525k£501,000#39
- Flat 5 15, Belsize AvenueFlatSold Mar 2014 for £460k£500,000#40
- Flat 3 27 Belsize AvenueFlatSold Aug 2022 for £550k£498,000#41
- Flat 6 5 Belsize AvenueFlatSold Dec 2019 for £490k£472,000#42
- Flat 3 15, Belsize AvenueFlatSold Nov 2009 for £265k£457,000#43
- Flat 4 5 Belsize AvenueFlatSold Jun 2013 for £360k£421,000#44
- 3b Belsize AvenueFlatSold Aug 2002 for £113k£266,000#45
- 3a Belsize Avenue–
- 9a Belsize Avenue–
- 23c Belsize Avenue–
- 23d Belsize Avenue–
- 23e Belsize Avenue–
- 29a Belsize Avenue–
- Flat 1 15, Belsize Avenue–
- Flat 1 27 Belsize Avenue–
- Flat 2 15, Belsize Avenue–
- Flat 3 3 Belsize Avenue–
- Flat 4 15, Belsize Avenue–
- Flat 5 27 Belsize Avenue–
- Flat 5 31 Belsize Avenue–
- Flat 6 11 Belsize Avenue–
- Flat 6 31 Belsize Avenue–
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 |
|---|---|---|---|---|---|
| Flat 3, 21 Belsize AvenueNW3 4BL · Flat | £550,000 | Mar 2025 | 549 sq ft | £1,002 | < 0.1 mi |
| Flat 2, 22 Belsize AvenueNW3 4AU · Flat | £545,000 | Dec 2025 | 474 sq ft | £1,151 | < 0.1 mi |
| Flat 11, 28 Belsize AvenueNW3 4AU · Flat | £360,000 | Oct 2025 | 484 sq ft | £743 | < 0.1 mi |
| Flat 19, Belle Vue Apartments Rowland Hill StreetNW3 2AQ · Flat | £515,000 | Jul 2026 | 570 sq ft | £903 | 0.2 mi |
| Flat 5, 63 Belsize AvenueNW3 4BN · Flat | £725,000 | Mar 2026 | 614 sq ft | £1,182 | 0.1 mi |
| Flat 79, Gilling Court Belsize GroveNW3 4XD · Flat | £475,000 | Jun 2026 | 463 sq ft | £1,026 | 0.2 mi |
| Flat 2, 47 Belsize AvenueNW3 4BN · Flat | £475,000 | Mar 2025 | 506 sq ft | £939 | 0.1 mi |
| Flat 3, 49 Belsize AvenueNW3 4BN · Flat | £580,000 | Feb 2025 | 538 sq ft | £1,078 | 0.1 mi |
| Flat 3, 1 Lyndhurst GardensNW3 5NS · Flat | £915,000 | Apr 2026 | 689 sq ft | £1,328 | 0.1 mi |
| 4 Howitt CloseNW3 4LX · Flat | £329,000 | Feb 2026 | 431 sq ft | £764 | 0.2 mi |
| Flat 3, Hillfield Court Belsize AvenueNW3 4BH · Flat | £420,000 | Mar 2025 | 495 sq ft | £848 | 0.2 mi |
| Flat 2, 41 Glenmore RoadNW3 4DA · Flat | £760,000 | Mar 2026 | 667 sq ft | £1,139 | 0.2 mi |
What buyers have paid in NW3
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 | 363 | £1,487,820 | 1,248 sq ft | £1,084 | −5.2% |
| Flats | 281 | £968,039 | 896 sq ft | £979 | −10.3% |
| Terraced | 40 | £2,257,067 | 1,786 sq ft | £1,335 | −15.3% |
| Semi-detached | 21 | £4,142,893 | 2,874 sq ft | £1,530 | +0.9% |
| Detached | 12 | £5,903,271 | 3,387 sq ft | £1,420 | −1.6% |
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 June 2021.
Is this your home and you would rather it had no page here? Claim it with your email and mobile and hide it in one click, or contact us.