10a, Belsize Park, Camden, London, NW3 4ES
About 10a
10a is a semi-detached house in Camden, London, London (NW3 4ES). It has a recorded floor area of 134 m² (around 1442 sq ft), construction records dating it to before 1900 and council tax band G. At 134 m² this is the 9th smallest of 10 units on EPC record in the building, where floor areas span 59–134 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (July 2024) shows a C (score 73).
Held since February 2006 — that's 20 years off the open market, well above the local norm. At 134 m² the property is well over the postcode median (64 m² across 35 EPCs), placing it in the larger end of the local stock. Across 1996–2006, sale prices on this property compounded at 14% per year. Today's modelled estimate of £1,593,000 sits 99.1% above the 2006 sale of £800,000. 6 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved.
Know exactly what you're buying at 10a
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
Planning history
10a has 2 separate extension applications on the council record.
- Feb 2016Tree WorksTreesIn report
FRONT GARDEN: Privet - Reduce height and lateral spread all around by 2m, crown lift to 2.5. REAR GARDEN: Fig - Reduce back to previous points of reduction, remove secondary branch at 3.5m. Apple - Reduce in height and the lateral spread all around by 1.5m. Holly - Reduce stem pushing against garage wall down to first main branch below garage roof. Olive - Reduce height and lateral spread all around 1-1.5m.
- Documents
- 2 docs on file
- Reference
- 2016/0110/T
- Apr 2008Tree WorksTreesIn report
FRONT GARDEN: 1 x Privet - Removal of overgrown privet. REAR GARDEN: 1 x Fig - Crown lift to 4m. Trim to 2 1/2 m.
- Documents
- 1 doc on file
- Reference
- 2008/1007/T
We flagged 1 thing worth checking at 10a
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
10a has more than tripled in price since its earliest registered sale in 1996.
£1,593,000
Modelled from EPC, postcode comparables and a sale-price growth of 14.0% per year over 10 years.
£800,000
Growth on file: 14.0% per year over 10 years.
Sales timeline
21 February 2006Most recent
£800,000
+45.5%over 3 years25 April 2002
£550,000
+139.1%over 5 years19 August 1996
£230,000
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, 14 Belsize Park, London, NW3 4ES
Sold Jun 2023
£745,000Flat 4, 16 Belsize Park, London, NW3 4ES
Sold Jun 2023
£1,700,000Flat 1, 11 Belsize Park, London, NW3 4ES
Sold Apr 2023
£800,000
Everything we know about 10a, 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 floor area, 10a stands well clear of the street.
Price per m²
£5,970
Street avg £8,382
Floor Area
134 m²
Street avg 82 m²
Habitable Rooms
4 rooms
Street avg 3 rooms
CO₂ Emissions
3.7 t/year
Street avg 3.4 t/year
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1 Strathray Gardens, Camden
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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
0.1 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