16 Heydon Road is a three-bedroom semi-detached house in Great Chishill, Royston, Royston (SG8 8SR). It has a recorded floor area of 98 m² (around 1055 sq ft), construction records dating it to 1976-1982 and council tax band D. The latest certificate (August 2019) shows a D (score 61), on the cusp of jumping into the C band. When first surveyed in August 2009 the rating was E, the property has climbed 1 band since. Between certificates, window efficiency went from Very Poor to Good and lighting went from Very Poor to Good. The recommended improvements would lift it to B (score 84), a 2-band jump. Main heating runs on oil.
Held since November 2006 — that's 20 years off the open market, well above the local norm. Today's modelled estimate of £470,000 sits 88% above the 2006 sale of £249,996. On a £-per-square-foot basis, the last sale (£237/sq ft) was about 15.3% below the postcode norm. At 98 m² it's 24.2% 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
Recommended upgrades on file would lift this property by multiple EPC bands.
16 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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£470,000
Modelled from EPC, postcode comparables.
£249,996
Recorded with HM Land Registry.
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
Years Held for 16 Heydon Road runs comfortably ahead of the street norm.
Price per m²
£2,551
Street avg £3,589
Floor Area
98 m²
Street avg 137 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
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Single glazing replaced with double or better glazing
More low energy lighting installed
20 November 2006Most recent
£249,996
Median price across the last 5 sales in SG8 8SR: £730,000 (2025–2021).

CO₂ Emissions
4.8 t/year
Street avg 6.1 t/year
SG8 8AP
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