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Get started5 Erratts Hill is a three-bedroom semi-detached house in Cowlinge, Newmarket, Newmarket (CB8 9QG). It has a recorded floor area of 86 m² (around 930 sq ft), construction records dating it to 1950-1966 and council tax band B. The latest certificate (October 2011) shows a C (score 71). When first surveyed in June 2010 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Good, roof efficiency went from Good to Very Good and window efficiency went from Average to Good; while lighting dropped from Very Good to Good. Main heating runs on oil. The latest certificate is from October 2011, so improvements made since then won't be reflected. Records show the property has been extended at some point in its history.
Sale prices here have outpaced England HPI: 10.1% per year against 0% for the wider region. Today's modelled estimate of £350,000 is 44.3% above the 2014 sale price. On a £-per-square-foot basis, the last sale (£261/sq ft) was about 44.5% above the typical sold price in the postcode. On energy efficiency it sits in the top 10% of properties in this postcode. 3 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, a porch and partial demolition, meaningful when judging how the property has evolved. Last changed hands 11 years ago, in December 2014.
5 Erratts Hill ranks among the most efficient homes in the postcode for energy use.
This certificate is over 10 years old and is no longer valid.Expired 04 Oct 2021
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
Extension: Single storey · Rear of property
Application for Householder Prior Approval - Single storey rear extension which extends beyond the rear wall of the original house by 5.0 metres with a maximum height of 3.5 metres and a height of 2.4 metres to the eaves
£350,000
Modelled from EPC, postcode comparables and a sale-price growth of 10.1% per year over 4 years.
£242,500
Growth on file: 10.1% per year over 4 years.
5 Erratts Hill outperforms the street on epc rating by a wide margin.
EPC Rating
71 (C)
Street avg 54 (E)
Floor Area
86 m²
Street avg 112 m²
CO₂ Emissions
3.7 t/year
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km

Daytime· 07:00 – 23:00
43.1dB

Changes detected from historical EPC data
Replaced storage heaters with gas boiler
Fuel source changed
Heating controls upgraded for better temperature management
Hot water system upgraded
Window efficiency improved
Cavity wall insulation installed
Loft insulation upgraded to recommended levels
Are we missing something? Tell us about home improvements to help adjust your valuation.
Householder Planning Application - (i) two storey side extension, (ii) 2no. single storey rear extensions and (iii) porch to front elevation
1 more application for this property
Join to see all planning history.
5 December 2014Most recent
£242,500
+49.7%over 4 years24 September 2010
£162,000
Median price across the last 5 sales in CB8 9QG: £302,000 (2018–2005).
Street avg 6.0 t/year
Habitable Rooms
5 rooms
Street avg 5 rooms
CB8 9PP
Three Tuns — bus stop.
Night-time· 23:00 – 07:00
36.2dB
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