20 High Street is a four-bedroom detached house in Chrishall, Royston, Royston (SG8 8RP). It has a recorded floor area of 178 m² (around 1916 sq ft), construction records dating it to 1976-1982 and council tax band F. The latest certificate (October 2023) shows an E (score 51), well below the UK norm with real room to improve. The recommended improvements would lift it to C (score 76), a 2-band jump. Main heating runs on oil. Records show the property has been extended at some point in its history.
Sale prices here have outpaced England HPI: 6.8% per year against 0% for the wider region. Today's modelled estimate of £706,000 is 28.4% above the 2018 sale price. At 178 m² the property is well over the postcode median (128 m² across 12 EPCs), placing it in the larger end of the local stock. 8 years since the last transfer (January 2018). Across the public record there are 4 sales, relatively high churn for a single property. One planning record on file: an extension approved in 2004. Past consents include an extension, meaningful when judging how the property has evolved.
20 High Street's carbon output runs well above what efficient homes in the postcode produce.
Council records include a two-storey rear extension at 20 High Street.
Extension: Two storey · Rear of property
Two storey rear extension. Side access door and window to front elevation
Sale price has grown by over 3x since 1997.
£706,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.8% per year over 21 years.
£550,000
Growth on file: 6.8% per year over 21 years.
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On floor area, 20 High Street stands well clear of the street.
Price per m²
£3,090
Street avg £3,488
Floor Area
178 m²
Street avg 142 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
0.2 km

Daytime· 07:00 – 23:00
43.4dB

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Full planning data for 20 High Street, Chrishall, Royston, SG8 8RP
Every application and decision on this property and nearby, in full, in the report.
22 January 2018Most recent
£550,000
+26.4%over 9 years1 August 2008
£435,000
+67.3%over 7 years31 October 2000
£260,000
+87.1%over 3 years30 January 1997
£139,000
Median price across the last 5 sales in SG8 8RP: £675,000 (2021–2016).
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
8.4 t/year
Street avg 8.0 t/year
SG8 8SB
School — bus stop.
Closest school
0.2 km
Chrishall Holy Trinity and St Nicholas CofE (Aided) Primary School and Pre-School. 1 school nearby.
Night-time· 23:00 – 07:00
35.9dB