1 Belsize Square, Camden, London, NW3 4HT
About 1 Belsize Square
1 Belsize Square is a two-bedroom semi-detached house in Camden, London, London (NW3 4HT). It has a recorded floor area of 449 m² (around 4836 sq ft), construction records dating it to before 1900 and council tax band H. The latest certificate (September 2009) shows an E (score 53), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 56). The latest certificate is from September 2009, so improvements made since then won't be reflected.
It hasn't traded since December 2009, a hold of 16 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 449 m² the property is well over the postcode median (94 m² across 74 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 89% of similar EPCs). Across 1998–2009, sale prices on this property compounded at 27.2% per year. Today's modelled estimate of £6,331,000 is 26.6% above the 2009 sale price. On a £-per-square-foot basis, the last sale (£1,034/sq ft) was about 74.6% above the typical sold price in the postcode. 3 planning records sit against the property, 2 approved, 1 refused.
Know exactly what you're buying at 1 Belsize Square
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
What this property has
Inside
- Bedrooms2
- Bathrooms2
Energy performance
1 Belsize Square's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 08 Sept 2019
EPC Rating
Planning history
- May 2007RenovationFullIn report
Erection of a wooden trellis above the existing boundary wall to the rear of the application site and also to part of the existing wall along the west boundary to the side and rear of the existing dwellinghouse.
- Documents
- 10 docs on file
- Reference
- 2007/1290/P
- Dec 2006RenovationFullIn report
Erection of a wooden trellis above the existing brick boundary wall around all sides of the rear garden.
- Reference
- 2006/5892/P
We flagged 1 thing worth checking at 1 Belsize Square
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
1 Belsize Square has more than quadrupled in price since its earliest registered sale in 1998.
£6,331,000
Modelled from EPC, postcode comparables and a sale-price growth of 27.2% per year over 11 years.
£5,000,000
Growth on file: 27.2% per year over 11 years.
Sales timeline
10 December 2009Most recent
£5,000,000
+257.1%over 8 years28 June 2001
£1,400,000
+311.8%over 2 years14 October 1998
£340,000
Median price across the last 5 sales in NW3 4HT: £1,000,000 (2024–2022).
Nearby sales in NW3 4HT
Flat 5, 8 Belsize Square, London, NW3 4HT
Sold Nov 2024
£1,090,000Flat B, 10 Belsize Square, London, NW3 4HT
Sold Sept 2023
£617,500Flat 4, 22 Belsize Square, London, NW3 4HT
Sold Aug 2022
£1,330,000Flat 5, 22 Belsize Square, London, NW3 4HT
Sold May 2022
£1,000,0004e, Belsize Square, London, NW3 4HT
Sold Mar 2022
£519,000
Everything we know about 1 Belsize Square, 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 Square homes
On floor area, 1 Belsize Square stands well clear of the street.
EPC Rating
53 (E)
Street avg 59 (D)
Floor Area
449 m²
Street avg 311 m²
CO₂ Emissions
21.0 t/year
Street avg 13.8 t/year
Habitable Rooms
10 rooms
Street avg 7 rooms
Similar properties nearby
1 Englands Lane, Camden
NW3 4YA
1 Steeles Studios, Haverstock Hill, Camden
NW3 4RN
1 Steeles Mews North, Camden
NW3 4RJ
1 Tudor Close, Camden
NW3 4AB
1 Crossfield Road, Camden
NW3 4NS
1 Eton Garages, Lambolle Place, Camden
NW3 4PE
1 Lancaster Drive, Camden
NW3 4EY
1 Strathray Gardens, Camden
NW3 4PA
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. 70 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
53.9dB

Night-time· 23:00 – 07:00
42.9dB