78 High Street is a four-bedroom semi-detached house in Guilden Morden, Royston, Royston (SG8 0JS). It has a recorded floor area of 142 m² (around 1528 sq ft), construction records dating it to before 1900 and council tax band F. The latest certificate (April 2021) shows an E (score 40), well below the UK norm with real room to improve. When first surveyed in September 2017 the rating was F, the property has climbed 1 band since. Between certificates, roof efficiency dropped from Average to Very Poor and hot-water efficiency dropped from Average to Poor. The recommended improvements would lift it to C (score 76), a 2-band jump. Main heating runs on oil. Period features are noted in the property record.
Sale prices here have outpaced England HPI: 1.1% per year against 0% for the wider region. Today's modelled estimate of £665,000 is 17.7% above the 2020 sale price. On a £-per-square-foot basis, the last sale (£370/sq ft) was about 43.2% above the typical sold price in the postcode. Sold November 2020 for £565,000. One historical planning record sits against the property in 2021.
78 High Street's carbon output runs well above what efficient homes in the postcode produce.
A recent planning application at 78 High Street was refused — worth checking the council file.
Certificate of lawfulness under S192 for a dropped kerb and part change of use of garden to driveway
78 High Street's sale-price growth has lagged the wider UK trajectory across its history on file.
£665,000
Modelled from EPC, postcode comparables and a sale-price growth of 1.1% per year over 13 years.
£565,000
Growth on file: 1.1% per year over 13 years.
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Detailed analysis
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Years Held for 78 High Street lags the street by a wide margin.
Price per m²
£3,979
Street avg £3,395
Floor Area
142 m²
Street avg 147 m²
Habitable Rooms
8 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.
Closest school
0.8 km

Daytime· 07:00 – 23:00
41.9dB

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Changes detected from historical EPC data
Hot water efficiency decreased
Full planning data for 78 High Street, Guilden Morden, Royston, SG8 0JS
Every application and decision on this property and nearby, in full, in the report.
24 November 2020Most recent
£565,000
+15.3%over 13 years14 August 2007
£490,000
Median price across the last 5 sales in SG8 0JS: £570,000 (2022–2012).
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
9.3 t/year
Street avg 9.1 t/year
SG8 0BA
Guilden Morden CofE Primary Academy. 2 schools nearby.
Night-time· 23:00 – 07:00
35.5dB