25c, Fitzjohns Avenue, London, NW3 5JY
About 25c
25c is a semi-detached house in London (NW3 5JY). It has a recorded floor area of 105 m² (around 1130 sq ft) and construction records dating it to 1900-1929. The latest certificate (February 2021) shows a D (score 67), on the cusp of jumping into the C band. The rating has held steady at D across 7 certificates since June 2009. Between certificates, lighting went from Very Poor to Average. The recommended improvements would push it to C (score 79). At 105 m² this is the 31st smallest of 42 units on EPC record in the building, where floor areas span 18–220 m². The building's EPC ratings span E to C across 42 units on file.
It hasn't traded since September 2009, a hold of 17 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Across 1997–2009, sale prices on this property compounded at 11.6% per year. Today's modelled estimate of £1,119,000 sits 59.9% above the 2009 sale of £700,000.
Know exactly what you're buying at 25c
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 efficiency decreased
Windows upgraded, improving insulation
Heating controls upgraded for better temperature management
Hot water efficiency improved
More low energy lighting installed
Hot water efficiency decreased
More low energy lighting installed
Low energy lighting percentage decreased
Planning history
25c has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at 25c
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
25c has more than tripled in price since its earliest registered sale in 1997.
£1,119,000
Modelled from EPC, postcode comparables and a sale-price growth of 11.6% per year over 12 years.
£700,000
Growth on file: 11.6% per year over 12 years.
Sales timeline
16 September 2009Most recent
£700,000
+125.8%over 11 years29 April 1998
£310,000
+72.2%over 1 year15 April 1997
£180,000
Median price across the last 5 sales in NW3 5JY: £1,346,000 (2025–2023).
Nearby sales in NW3 5JY
15d, Fitzjohns Avenue, Camden, London, NW3 5JY
Sold Jul 2025
£1,840,00025e, Fitzjohns Avenue, London, NW3 5JY
Sold Mar 2025
£1,210,00037c, Fitzjohns Avenue, Camden, London, NW3 5JY
Sold Jan 2025
£8,200,000Flat 4, 11 Fitzjohns Avenue, Camden, London, NW3 5JY
Sold Aug 2023
£1,185,000Flat 8, 21 Fitzjohns Avenue, Camden, London, NW3 5JY
Sold Aug 2023
£1,346,000
Everything we know about 25c, 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 Fitzjohns Avenue homes
25c is notably below the street on price per m².
Price per m²
£6,667
Street avg £10,329
Floor Area
105 m²
Street avg 107 m²
Habitable Rooms
4 rooms
Street avg 3 rooms
CO₂ Emissions
3.8 t/year
Street avg 3.5 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
Belsize Lane — bus stop.
Closest school
0.2 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
53.8dB

Night-time· 23:00 – 07:00
42.6dB