509a, Green Lanes, Haringey, London, N4 1AL
About 509a
509a is an end-of-terrace house in Haringey, London, London (N4 1AL). It has a recorded floor area of 77 m² (around 831 sq ft) and construction records dating it to 1900-1929. The latest certificate (March 2009) shows an E (score 42), well below the UK norm with real room to improve. The recommended improvements would push it to D (score 55). The latest certificate is from March 2009, so improvements made since then won't be reflected.
At 77 m² the property is well over the postcode median (58 m² across 10 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £535,000 is 12.6% above the 2022 sale price. On a £-per-square-foot basis, the last sale (£572/sq ft) was about 43.6% above the typical sold price in the postcode. Most recent transfer: March 2022 at £475,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 509a
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
509a's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 11 Mar 2019
EPC Rating
Planning history
509a has no planning applications on record.
Notable planning nearby
31applications of note in the surrounding area
We flagged 2 things worth checking at 509a
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.
- Signs of HMO activity in the area
- Larger development activity nearby
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Sales history & valuation
The latest sale landed in the post-pandemic price surge — useful context when reading the figure.
£535,000
Modelled from EPC, postcode comparables.
£475,000
Recorded with HM Land Registry.
Sales timeline
22 March 2022Most recent
£475,000
Median price across the last 5 sales in N4 1AL: £400,000 (2022–1997).
Everything we know about 509a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby

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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
15/mo
Rising year-on-year across the wider district.
Nearest stop
0.0 km
Mattison Road — bus stop.
Closest school
0.1 km
South Harringay Junior School. 82 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
52.4dB

Night-time· 23:00 – 07:00
43.1dB