First Floor Flat, 40 Mattison Road, London, N4 1BD
About First Floor Flat
First Floor Flat is a mid-terrace house in London (N4 1BD). It has a recorded floor area of 60 m² (around 646 sq ft) and construction records dating it to 1900-1929. The latest certificate (February 2021) shows a D (score 63), on the cusp of jumping into the C band. When first surveyed in October 2008 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Average.
2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension, meaningful when judging how the property has evolved. Across 2022–2023, sale prices on this property compounded at -25.5% per year. Today's modelled estimate of £461,000 is 12.4% above the 2023 sale price. On a £-per-square-foot basis, the last sale (£635/sq ft) was about 56.1% above the typical sold price in the postcode. Sold April 2023 for £410,000.
Know exactly what you're buying at First Floor Flat
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 upgraded for better temperature management
Single glazing replaced with double or better glazing
Planning history
A subdivision application was refused at First Floor Flat in 2024.
- Jun 2024ExtensionFullIn report
Extension: Rear of property
Formation of rear roof terrace
- Documents
- 8 docs on file
- Reference
- HGY/2024/1192
- Mar 2024SubdivisionFullIn report
Subdivision of the upper floor flat into 1x studio and 1 self-contained flat following grant of loft extension under ref HGY/2022/1892.
- Documents
- 13 docs on file
- Reference
- HGY/2022/2708
We flagged 2 things worth checking at First Floor Flat
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
30-day money-back guarantee
Sales history & valuation
First Floor Flat changed hands twice within eighteen months — unusual for the area.
£461,000
Modelled from EPC, postcode comparables and a sale-price growth of -25.5% per year over 1 year.
£410,000
Growth on file: -25.5% per year over 1 year.
Sales timeline
4 April 2023Most recent
£410,000
-25.5%over 12 months6 April 2022
£550,000
Median price across the last 5 sales in N4 1BD: £950,000 (2023–2022).
Nearby sales in N4 1BD
8 Mattison Road, Haringey, London, N4 1BD
Sold Mar 2023
£1,170,00042 Mattison Road, Haringey, London, N4 1BD
Sold Nov 2022
£1,352,500Ground Floor Flat, 40 Mattison Road, London, N4 1BD
Sold Apr 2022
£550,00040 Mattison Road, Haringey, London, N4 1BD
Sold Apr 2022
£770,00024 Mattison Road, Haringey, London, N4 1BD
Sold Feb 2022
£950,000
Everything we know about First Floor Flat, 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

Versus other Mattison Road homes
On years held, First Floor Flat runs well behind the street norm.
Price per m²
£6,833
Street avg £9,292
Floor Area
60 m²
Street avg 44 m²
Habitable Rooms
3 rooms
Street avg 2 rooms
CO₂ Emissions
2.9 t/year
Street avg 2.3 t/year
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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
0.3 km
Harringay Rail Station — railway station.
Closest school
0.2 km
South Harringay Infant School. 79 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
51.7dB

Night-time· 23:00 – 07:00
42.8dB