Heron House 1a, Flat 4, Cottage Grove, Surbiton, KT6 4JH
About Heron House 1a
Heron House 1a is a mid-terrace house in Surbiton (KT6 4JH). It has a recorded floor area of 43 m² (around 463 sq ft) and construction records dating it to 1991-1995. At 43 m² this is the 2nd smallest of 10 units on EPC record in Heron House 1a, where floor areas span 42–83 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (76 versus a worst of 47). The latest certificate (January 2019) shows a C (score 76), near the top of the C band. The rating has held steady at C across 2 certificates since December 2008. Between certificates, hot-water efficiency went from Poor to Average; while lighting dropped from Very Good to Very Poor. The recommended improvements would push it to B (score 81). Main heating runs on electricity.
At 43 m² it sits well below the postcode median (77 m² across 46 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 83% of similar EPCs).
Know exactly what you're buying at Heron House 1a
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
Hot water efficiency improved
Low energy lighting percentage decreased
Planning history
Heron House 1a has no planning applications on record.
Notable planning nearby
4applications of note in the surrounding area
We flagged 1 thing worth checking at Heron House 1a
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
Heron House 1a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£303,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in KT6 4JH: £820,000 (2025–2025).
Nearby sales in KT6 4JH
19 Cottage Grove, Surbiton, KT6 4JH
Sold Nov 2025
£635,00029 Cottage Grove, Surbiton, KT6 4JH
Sold Nov 2025
£820,00020 Cottage Grove, Surbiton, KT6 4JH
Sold May 2025
£875,000Heron House 1a, Flat 1, Cottage Grove, Surbiton, KT6 4JH
Sold Mar 2025
£162,00032 Cottage Grove, Surbiton, KT6 4JH
Sold Mar 2025
£885,000
Everything we know about Heron House 1a, 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 Cottage Grove homes
On epc rating, Heron House 1a stands well clear of the street.
EPC Rating
76 (C)
Street avg 65 (D)
Floor Area
43 m²
Street avg 65 m²
CO₂ Emissions
2.1 t/year
Street avg 3.7 t/year
Habitable Rooms
2 rooms
Street avg 3 rooms
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Surbiton Sainsbury's — bus stop.
Closest school
0.3 km
St Andrew's and St Mark's CofE Junior School. 32 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
53.3dB
Night-time· 23:00 – 07:00
43.9dB