Rosslyn Heights, Flat 1, 2 Belsize Lane, London, NW3 5AB
About Rosslyn Heights
Rosslyn Heights is a semi-detached house in London (NW3 5AB). It has a recorded floor area of 72 m² (around 775 sq ft), construction records dating it to 1900-1929 and council tax band F. At 72 m² this is the smallest unit on EPC record across Rosslyn Heights (72–191 m²). The building's EPC ratings span E to C, with this unit at the top. The latest certificate (January 2023) shows a C (score 69), just inside the C band. When first surveyed in January 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor; while main heating dropped from Very Good to Good. The recommended improvements would push it to B (score 81).
Across 2000–2020, sale prices on this property compounded at 6.4% per year. Today's modelled estimate of £1,143,000 is 12.7% below the 2020 sale of £1,310,000, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£1,690/sq ft) was about 169.5% above the typical sold price in the postcode. At 72 m² it sits well below the postcode median (111 m² across 26 EPCs), making it one of the more compact homes locally. Last sale on file: £1,310,000 in July 2020.
Know exactly what you're buying at Rosslyn Heights
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
Heating controls changed
Hot water system upgraded
Single glazing replaced with double or better glazing
Wall insulation improved
Low energy lighting percentage decreased
Heating controls upgraded for better temperature management
Hot water efficiency improved
Hot water efficiency decreased
Single glazing replaced with double or better glazing
More low energy lighting installed
Low energy lighting percentage decreased
Wall insulation improved
More low energy lighting installed
Planning history
Rosslyn Heights has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at Rosslyn Heights
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
Sale price has grown by over 3x since 2000.
£1,143,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.4% per year over 20 years.
£1,310,000
Growth on file: 6.4% per year over 20 years.
Sales timeline
16 July 2020Most recent
£1,310,000
+31.7%over 5 years7 January 2015
£995,000
+165.3%over 14 years5 April 2000
£375,000
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 Rosslyn Heights, 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
Rosslyn Heights outperforms the street on price per m² by a wide margin.
Price per m²
£18,194
Street avg £11,612
Floor Area
72 m²
Street avg 113 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
CO₂ Emissions
2.6 t/year
Street avg 4.3 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
0.1 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