40 Heydon Road is a three-bedroom semi-detached house in Great Chishill, Royston, Royston (SG8 8SR). It has a recorded floor area of 93 m² (around 1002 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (July 2009) shows a D (score 67), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 71). Main heating runs on oil. The latest certificate is from July 2009, so improvements made since then won't be reflected.
Sale prices here have outpaced England HPI: 3.3% per year against 0% for the wider region. Today's modelled estimate of £494,000 is 24% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£398/sq ft) was about 51.5% above the typical sold price in the postcode. On the market in August 2017 and unlisted since — roughly 9 years. Across the public record there are 4 sales, relatively high churn for a single property. At 93 m² it's 28% smaller than the typical home in the postcode (129 m² median across 22 EPCs).
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
40 Heydon Road's EPC is over a decade old — improvements since won't be reflected.
This certificate is over 10 years old and is no longer valid.Expired 13 Jul 2019
40 Heydon Road has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
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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£494,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.3% per year over 11 years.
£398,500
Growth on file: 3.3% per year over 11 years.
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
Price per m²
£4,280
Street avg £3,473
Floor Area
93 m²
Street avg 138 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
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
1.9 km

Daytime· 07:00 – 23:00
44.3dB

Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
14 August 2017Most recent
£398,500
+40.8%over 4 years21 September 2012
£283,000
+0.7%over 2 years12 January 2010
£281,000
3 November 2006
£280,400
Median price across the last 5 sales in SG8 8SR: £730,000 (2025–2021).

CO₂ Emissions
4.4 t/year
Street avg 6.1 t/year
SG8 8SF
School — bus stop.
Closest school
1.9 km
Chrishall Holy Trinity and St Nicholas CofE (Aided) Primary School and Pre-School. 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
37.1dB