Green Knoll Farm is a detached house in Guilden Morden, Royston, Royston (SG8 0LB). It has a recorded floor area of 70 m² (around 753 sq ft) and construction records dating it to before 1900. The latest certificate (July 2021) shows an E (score 51), well below the UK norm with real room to improve. The recommended improvements would lift it to A (score 93), a 4-band jump. Main heating runs on electricity.
At 70 m² it sits well below the postcode median (192 m² across 5 EPCs), making it one of the more compact homes locally. 3 planning records sit against the property, 3 approved, 0 refused. Past consents include change of use to residential, meaningful when judging how the property has evolved.
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
Recommended upgrades on file would lift this property by multiple EPC bands.
Variation of condition 2 (bullet point two) of S/4749/18/PA
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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Green Knoll Farm has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£398,000
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
Floor Area for Green Knoll Farm lags the street by a wide margin.
EPC Rating
51 (E)
Street avg 70 (C)
Floor Area
70 m²
Street avg 200 m²
CO₂ Emissions
3.4 t/year
Street avg 4.9 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.
Nearest stop
2.9 km

Daytime· 07:00 – 23:00
43.7dB

Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Discharge of Conditions part (a) of 2 (Phase 1 Environmental Study including Conceptual) 3 (Surface & Foul Water Drainage Designs) & 4 (Traffic Management Plan)
Median price across the last 5 sales in SG8 0LB: £665,000 (2024–2015).

Habitable Rooms
3 rooms
Street avg 7 rooms
SG8 0NJ
Eyeworth Road — bus stop.
Closest school
0.5 km
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