Flat 4, 14 Belsize Park, London, NW3 4ES
About Flat 4
Flat 4 is a semi-detached house in London (NW3 4ES). It has a recorded floor area of 54 m² (around 581 sq ft), construction records dating it to 1900-1929 and council tax band E. At 54 m² this is the 2nd smallest of 4 units on EPC record in the building, where floor areas span 39–112 m². The building's EPC ratings span E to C, with this unit at the top. The latest certificate (October 2021) shows a C (score 70). When first surveyed in December 2009 the rating was E, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Poor to Good, lighting went from Very Poor to Very Good and main heating went from Average to Good; while wall efficiency dropped from Average to Very Poor.
Across 1996–2023, sale prices on this property compounded at 6.9% per year. On a £-per-square-foot basis, the last sale (£1,282/sq ft) was about 131.1% above the typical sold price in the postcode. At 54 m² it's 16.9% smaller than the typical home in the postcode (65 m² median across 35 EPCs). Most recent transfer: June 2023 at £745,000.
Know exactly what you're buying at Flat 4
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
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
Hot water system upgraded
More low energy lighting installed
Planning history
Flat 4 has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at Flat 4
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
Price for Flat 4 has grown more than fourfold since the 1996 starting point.
£736,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.9% per year over 27 years.
£745,000
Growth on file: 6.9% per year over 27 years.
Sales timeline
22 June 2023Most recent
£745,000
+94.5%over 9 years22 November 2013
£383,000
-30.4%over 3 years26 March 2010
£550,000
+110.3%over 7 years4 November 2002
£261,490
+117.9%over 6 years2 February 1996
£120,000
Median price across the last 5 sales in NW3 4ES: £800,000 (2025–2023).
Nearby sales in NW3 4ES
Flat 3, 11 Belsize Park, London, NW3 4ES
Sold Mar 2025
£1,350,000Claridge House, Flat 4, 13 Belsize Park, London, NW3 4ES
Sold Oct 2023
£721,500Flat 4, 16 Belsize Park, London, NW3 4ES
Sold Jun 2023
£1,700,000Flat 1, 11 Belsize Park, London, NW3 4ES
Sold Apr 2023
£800,000Flat 5, 11 Belsize Park, London, NW3 4ES
Sold Jan 2023
£675,000
Everything we know about Flat 4, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby
Versus other Belsize Park homes
On price per m², Flat 4 stands well clear of the street.
Price per m²
£13,796
Street avg £8,042
Floor Area
54 m²
Street avg 85 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
2.1 t/year
Street avg 3.5 t/year
Similar properties nearby
15a, Flat A, Eton Road, Camden
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12a, Flat 2, Belsize Park
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23a, Garden Flat, Belsize Square, Camden
NW3 4HU
12a, Flat 1, Belsize Park
NW3 4ES
25a, Flat 1, Elizabeth Mews
NW3 4UH
25a, Flat 2, Elizabeth Mews
NW3 4UH
15a, Flat C, Eton Road
NW3 4SS
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Rising year-on-year across the wider district.
Nearest stop
0.1 km
Belsize Square — bus stop.
Closest school
0.5 km
Holy Trinity CofE Primary School, NW3. 67 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
53.1dB
Night-time· 23:00 – 07:00
42.0dB