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Get started42 Sywell Road is a four-bedroom semi-detached house in Overstone, Northampton, Northampton (NN6 0AN). It has a recorded floor area of 143 m² (around 1539 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (January 2024) shows a C (score 70). When first surveyed in April 2014 the rating was E, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Poor to Good and lighting went from Very Poor to Very Good; while roof efficiency dropped from Average to Very Poor. The recommended improvements would push it to B (score 82).
Sale prices here have outpaced England HPI: 7.3% per year against 0% for the wider region. On a £-per-square-foot basis, the last sale (£315/sq ft) was about 56.8% above the typical sold price in the postcode. One planning record on file: an extension approved in 2016. Past consents include an extension and a garage conversion, meaningful when judging how the property has evolved. At 143 m² it's 24.3% larger than the typical home in the postcode (115 m² median across 19 EPCs). Its energy rating outperforms most of the postcode (better than 74% of similar EPCs). Most recent transfer: April 2024 at £485,000.
Extension: Single storey · Rear of property
Demolition of existing rear extension. Construction of single storey rear extension, raise roof of existing garage and conversion to habitable room with utility/shower room.
42 Sywell Road has more than quadrupled in price since its earliest registered sale in 1999.
£492,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.3% per year over 25 years.
£485,000
Growth on file: 7.3% per year over 25 years.
On years held, 42 Sywell Road runs well behind the street norm.
Price per m²
£3,392
Street avg £2,570
Floor Area
143 m²
Street avg 154 m²
Habitable Rooms
7 rooms
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
42.2dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
22 April 2024Most recent
£485,000
+109.1%over 9 years25 July 2014
£232,000
+176.2%over 15 years21 April 1999
£84,000
Median price across the last 5 sales in NN6 0AN: £405,000 (2025–2020).
Street avg 6 rooms
CO₂ Emissions
4.8 t/year
Street avg 5.6 t/year
NN6 0ED
Sywell Pumping Station — bus stop.
Closest school
0.6 km
Sywell Church of England Primary School. 8 schools nearby.
Night-time· 23:00 – 07:00
36.4dB
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