65b, Belsize Park Gardens, London, NW3 4JN
About 65b
65b is a semi-detached house in London (NW3 4JN). It has a recorded floor area of 111 m² (around 1195 sq ft), construction records dating it to before 1900 and council tax band G. The latest certificate (February 2011) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since November 2010. Between certificates, hot-water efficiency went from Good to Very Good and main heating went from Good to Very Good. The recommended improvements would push it to C (score 71). The latest certificate is from February 2011, so improvements made since then won't be reflected. At 111 m² this is the 18th smallest of 23 units on EPC record in the building, where floor areas span 47–129 m². The building's EPC ratings span G to C across 23 units on file.
Across 2011–2023, sale prices on this property compounded at 2.9% per year. Today's modelled estimate of £1,411,000 is 16% below the 2023 sale of £1,680,000, running counter to the wider postcode trend, which makes the EPC and condition history especially worth a look. On a £-per-square-foot basis, the last sale (£1,406/sq ft) was about 96.1% above the typical sold price in the postcode. One planning record on file: new windows approved in 2024. Past consents include new windows, meaningful when judging how the property has evolved. At 111 m² it's 27.6% larger than the typical home in the postcode (87 m² median across 36 EPCs). Last sale on file: £1,680,000 in March 2023.
Know exactly what you're buying at 65b
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
65b's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 24 Feb 2021
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency improved
Single glazing replaced with double or better glazing
Planning history
- Mar 2024RenovationFullIn report
Replacement of ground floor side window.
New Windows- Documents
- 9 docs on file
- Reference
- 2024/0132/P
We flagged 1 thing worth checking at 65b
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
Latest sale on 65b was the highest on Land Registry record across the postcode.
£1,411,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.9% per year over 12 years.
£1,680,000
Growth on file: 2.9% per year over 12 years.
Sales timeline
29 March 2023Most recent
£1,680,000
-1.2%over 9 years26 September 2013
£1,700,000
+41.5%over 2 years16 June 2011
£1,201,754
Median price across the last 5 sales in NW3 4JN: £625,000 (2025–2024).
Nearby sales in NW3 4JN
67d, Belsize Park Gardens, London, NW3 4JN
Sold Apr 2025
£1,530,00063b 63e, Belsize Park Gardens, Camden, London, NW3 4JN
Sold Nov 2024
£625,00059 Belsize Park Gardens, Camden, London, NW3 4JN
Sold Oct 2024
£425,000Garden Flat, 61 Belsize Park Gardens, Camden, London, NW3 4JN
Sold Jul 2024
£30,00067b, Belsize Park Gardens, London, NW3 4JN
Sold May 2024
£785,000
Everything we know about 65b, 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 Gardens homes
65b outperforms the street on price per m² by a wide margin.
Price per m²
£15,135
Street avg £9,242
Floor Area
111 m²
Street avg 88 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
4.1 t/year
Street avg 4.4 t/year
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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
0.3 km
Primrose Gardens — bus stop.
Closest school
0.6 km
Rosary Catholic Primary School. 74 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
53.2dB

Night-time· 23:00 – 07:00
42.1dB