27 Pound Green is a three-bedroom semi-detached house in Guilden Morden, Royston, Royston (SG8 0JZ). It has a recorded floor area of 94 m² (around 1012 sq ft), construction records dating it to before 1900 and council tax band E. The latest certificate (November 2020) shows an E (score 41), well below the UK norm with real room to improve. When first surveyed in July 2009 the rating was F, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Average to Good and lighting went from Good to Very Good. The recommended improvements would lift it to C (score 70), a 2-band jump. Main heating runs on lpg. Period features are noted in the property record.
Sale prices here have outpaced England HPI: 6.1% per year against 0% for the wider region. Today's modelled estimate of £489,000 is 10.5% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£437/sq ft) was about 59.7% above the typical sold price in the postcode. Most recent transfer: February 2021 at £442,500. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. One planning record on file: an extension approved in 2024. Past consents include an extension, meaningful when judging how the property has evolved. At 94 m² it's 16.1% smaller than the typical home in the postcode (112 m² median across 19 EPCs).
Recommended upgrades on file would lift this property by multiple EPC bands.
27 Pound Green has an approved single-storey side extension on the planning record.
Extension: Single storey · Side of property
Single storey side extension.
27 Pound Green has more than tripled in price since its earliest registered sale in 1997.
£489,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.1% per year over 23 years.
£442,500
Growth on file: 6.1% per year over 23 years.
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27 Pound Green outperforms the street on price per m² by a wide margin.
Price per m²
£4,707
Street avg £3,175
Floor Area
94 m²
Street avg 132 m²
Habitable Rooms
7 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
0.1 km

Daytime· 07:00 – 23:00
43.3dB

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Changes detected from historical EPC data
Wall insulation improved
Roof insulation improved
More low energy lighting installed
Full planning data for 27 Pound Green, Guilden Morden, Royston, SG8 0JZ
Every application and decision on this property and nearby, in full, in the report.
5 February 2021Most recent
£442,500
+12.0%over 2 years12 July 2018
£395,000
+16.9%over 3 years29 October 2014
£338,000
+201.8%over 16 years10 November 1997
£112,000
Median price across the last 5 sales in SG8 0JZ: £460,000 (2024–2022).
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Sold Dec 2024
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Sold Sept 2023
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Sold Nov 2022
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Sold Aug 2022
35 Pound Green Guilden Morden Royston
Sold Jan 2022
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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Street avg 6 rooms
CO₂ Emissions
3.8 t/year
Street avg 5.9 t/year
SG8 0LP
Guilden Morden CofE Primary Academy. 2 schools nearby.
Night-time· 23:00 – 07:00
35.9dB