25a is a detached house in Guilden Morden, Royston, Royston (SG8 0JZ). It has a recorded floor area of 192 m² (around 2067 sq ft), construction records dating it to before 1900 and council tax band G. The latest certificate (February 2019) shows an E (score 39), well below the UK norm with real room to improve. Main heating runs on electricity.
At 192 m² the property is well over the postcode median (111 m² across 19 EPCs), placing it in the larger end of the local stock. One historical planning record sits against the property in 2018.
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
25a's carbon output runs well above what efficient homes in the postcode produce.
Removal of old boiler flue and oil tank and Installation of air source heat pump
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.
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25a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£922,000
Modelled from EPC, postcode comparables.
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.
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
On epc rating, 25a runs well behind the street norm.
EPC Rating
39 (E)
Street avg 57 (D)
Floor Area
192 m²
Street avg 127 m²
CO₂ Emissions
9.3 t/year
Street avg 5.6 t/year
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Closest school
0.1 km

Daytime· 07:00 – 23:00
43.3dB

Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Median price across the last 5 sales in SG8 0JZ: £460,000 (2024–2022).
1 Worboys Court Pound Green Guilden Morden Royston
Sold Dec 2024
4 Pound Green Guilden Morden Royston
Sold Sept 2023
25 Pound Green Guilden Morden Royston
Sold Nov 2022
Meadow View Pound Green Guilden Morden Royston
Sold Aug 2022
35 Pound Green Guilden Morden Royston
Sold Jan 2022

Habitable Rooms
6 rooms
Street avg 6 rooms
SG8 0JX
Guilden Morden CofE Primary Academy. 2 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Night-time· 23:00 – 07:00
35.9dB