12a, First Floor Flat, South Hill Park, London, NW3 2SB
About 12a
12a is a detached house in London (NW3 2SB). It has a recorded floor area of 91 m² (around 980 sq ft) and construction records dating it to 1900-1929. The latest certificate (June 2024) shows a C (score 69), just inside the C band. The rating has held steady at C across 6 certificates since March 2009. Between certificates, lighting went from Very Poor to Very Good; while window efficiency dropped from Poor to Very Poor.
Across 2002–2012, sale prices on this property compounded at 15.8% per year. Today's modelled estimate of £867,000 is 45.7% above the 2012 sale price. On a £-per-square-foot basis, the last sale (£607/sq ft) was about 17.5% above the typical sold price in the postcode. 14 years since the last transfer (January 2012).
Know exactly what you're buying at 12a
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
Windows upgraded, improving insulation
Heating controls upgraded for better temperature management
Window efficiency improved
Heating system changed
Changed to a more efficient fuel source
Hot water system changed
Wall insulation improved
More low energy lighting installed
Upgraded to gas central heating
Fuel source changed
Hot water system upgraded
Planning history
12a has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at 12a
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.
- Recent ownership pattern worth a look
30-day money-back guarantee
Sales history & valuation
Sale price has grown by over 3x since 2002.
£867,000
Modelled from EPC, postcode comparables and a sale-price growth of 15.8% per year over 9 years.
£595,050
Growth on file: 15.8% per year over 9 years.
Sales timeline
24 January 2012Most recent
£595,050
+28.0%over 1 year15 July 2010
£465,000
+210.0%over 7 years11 September 2002
£150,000
Median price across the last 5 sales in NW3 2SB: £882,000 (2024–2022).
Nearby sales in NW3 2SB
6a, South Hill Park, Camden, London, NW3 2SB
Sold Dec 2024
£654,00012a, South Hill Park, Camden, London, NW3 2SB
Sold Oct 2024
£882,00012a, Basement Flat, South Hill Park, London, NW3 2SB
Sold Oct 2024
£235,0002a, South Hill Park, Camden, London, NW3 2SB
Sold Mar 2024
£5,000,00030d, South Hill Park, London, NW3 2SB
Sold Jul 2022
£1,150,000
Everything we know about 12a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Recent ownership pattern worth a look

Versus other South Hill Park homes
Habitable Rooms for 12a runs comfortably ahead of the street norm.
Price per m²
£6,539
Street avg £8,553
Floor Area
91 m²
Street avg 81 m²
Habitable Rooms
5 rooms
Street avg 3 rooms
CO₂ Emissions
3.2 t/year
Street avg 3.6 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
Hampstead Heath Station — railway station.
Closest school
0.4 km
Rosary Catholic Primary School. 54 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
50.0dB

Night-time· 23:00 – 07:00
40.3dB