10 12, Flat 1, Belsize Lane, London, NW3 5AB
About 10 12
10 12 is a semi-detached house in London (NW3 5AB). It has a recorded floor area of 68 m² (around 732 sq ft) and construction records dating it to before 1900. The latest certificate (January 2017) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since June 2011. Between certificates, window efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to B (score 81), a 2-band jump.
At 68 m² it sits well below the postcode median (111 m² across 26 EPCs), making it one of the more compact homes locally.
Know exactly what you're buying at 10 12
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
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Planning history
10 12 has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at 10 12
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
10 12 has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£727,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in NW3 5AB: £1,350,000 (2025–2023).
Nearby sales in NW3 5AB
16 18a, Belsize Lane, Camden, London, NW3 5AB
Sold Oct 2025
£954,000Rosslyn Heights, Flat 2, 2 Belsize Lane, London, NW3 5AB
Sold Oct 2024
£1,350,000Rosslyn Heights, Flat 5, 2 Belsize Lane, London, NW3 5AB
Sold Apr 2024
£1,925,00018 Belsize Lane, London, NW3 5AB
Sold Nov 2023
£825,00022 Belsize Lane, London, NW3 5AB
Sold Aug 2023
£3,250,000
Everything we know about 10 12, 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 Lane homes
Floor Area for 10 12 lags the street by a wide margin.
EPC Rating
66 (D)
Street avg 65 (D)
Floor Area
68 m²
Street avg 114 m²
CO₂ Emissions
2.8 t/year
Street avg 4.3 t/year
Habitable Rooms
3 rooms
Street avg 4 rooms
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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
Rosslyn Hill — bus stop.
Closest school
0.2 km
Rosary Catholic Primary School. 59 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
52.7dB
Night-time· 23:00 – 07:00
42.2dB