4 St Marys Walk is a three-bedroom semi-detached house in Fowlmere, Royston, Royston (SG8 7TS). It has a recorded floor area of 101 m² (around 1087 sq ft), construction records dating it to 1967-1975 and council tax band D. The latest certificate (March 2023) shows an E (score 46), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since January 2018. Between certificates, roof efficiency went from Average to Very Good and lighting went from Poor to Very Good; while wall efficiency dropped from Good to Average and hot-water efficiency dropped from Poor to Very Poor. The recommended improvements would lift it to C (score 74), a 2-band jump. Main heating runs on oil.
Sale prices here have outpaced England HPI: 5.9% per year against 0% for the wider region. Today's modelled estimate of £436,000 is 32.1% above the 2018 sale price. Sold August 2018 for £330,000.
4 St Marys Walk's carbon output runs well above what efficient homes in the postcode produce.
No planning applications are recorded against 4 St Marys Walk, Fowlmere, Royston, SG8 7TS. The full report also covers planning activity across the surrounding area.
Full planning data for 4 St Marys Walk, Fowlmere, Royston, SG8 7TS
Every application and decision on this property and nearby, in full, in the report.
4 St Marys Walk has more than doubled in price since the earliest registered sale in 2001.
£436,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.9% per year over 17 years.
£330,000
Growth on file: 5.9% per year over 17 years.
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Price per m²
£3,267
Street avg £3,583
Floor Area
101 m²
Street avg 99 m²
Habitable Rooms
5 rooms
Street avg 5 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
0.4 km

Daytime· 07:00 – 23:00
45.5dB

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Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system changed
Loft insulation upgraded to recommended levels
9 August 2018Most recent
£330,000
+165.1%over 16 years31 August 2001
£124,500
Median price across the last 5 sales in SG8 7TS: £352,000 (2024–2018).
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
6.8 t/year
Street avg 5.7 t/year
SG8 7PD
Fowlmere Primary School. 3 schools nearby.
Flood risk
Medium
From the Environment Agency.
Night-time· 23:00 – 07:00
37.7dB