42 Heydon Road is a three-bedroom semi-detached house in Great Chishill, Royston, Royston (SG8 8SR). It has a recorded floor area of 120 m² (around 1292 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (June 2023) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since November 2010. Between certificates, hot-water efficiency went from Poor to Average; while wall efficiency dropped from Good to Average and roof efficiency dropped from Good to Average. The recommended improvements would push it to C (score 80). Main heating runs on oil. Other recorded features include outbuildings. The home occupies a cul-de-sac position.
Sale prices here have outpaced England HPI: 1.6% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£387/sq ft) was about 46.6% above the typical sold price in the postcode. Last sale on file: £500,000 in September 2024. One historical planning record sits against the property in 2022.
Cherry (T1) - crown reduction of 1.5m all round due to interference with telephone lines. Portuguese Laurel (T2) - crown reduction of 1.5m all round due to increasing encroachment into property side access and interference with oil tank.
42 Heydon Road saw 3 transfers in just over a decade — high turnover for the postcode.
£515,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.6% per year over 9 years.
£500,000
Growth on file: 1.6% per year over 9 years.
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42 Heydon Road is notably below the street on years held.
Price per m²
£4,167
Street avg £3,481
Floor Area
120 m²
Street avg 136 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

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Changes detected from historical EPC data
Hot water system upgraded
Full planning data for 42 Heydon Road, Great Chishill, Royston, SG8 8SR
Every application and decision on this property and nearby, in full, in the report.
5 September 2024Most recent
£500,000
-4.8%over 3 years12 March 2021
£525,000
+21.2%over 5 years16 November 2015
£433,000
Median price across the last 5 sales in SG8 8SR: £730,000 (2025–2021).
Detailed EPC data
Full energy ratings, history and recommendations
Full planning history
Every application and decision on record
Comparable sales data
Plus transport, crime, schools and air quality
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CO₂ Emissions
4.1 t/year
Street avg 6.1 t/year
SG8 8SB
School — bus stop.
Closest school
1.9 km
Chrishall Holy Trinity and St Nicholas CofE (Aided) Primary School and Pre-School. 2 schools nearby.
Night-time· 23:00 – 07:00
37.1dB