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Get started20 Sywell Road is a three-bedroom semi-detached house in Overstone, Northampton, Northampton (NN6 0AN). It has a recorded floor area of 115 m² (around 1238 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (April 2014) shows an E (score 41), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 81), a 3-band jump. The latest certificate is from April 2014, so improvements made since then won't be reflected. Other recorded features include a conservatory.
Sale prices here have outpaced England HPI: 6.3% per year against 0% for the wider region. Today's modelled estimate of £381,000 sits 58.1% above the 2014 sale of £241,000. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. One planning record on file: an extension approved in 2016. Past consents include an extension, meaningful when judging how the property has evolved. Last sold in August 2014, so it's been off the market for around 12 years.
20 Sywell Road sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
This certificate is over 10 years old and is no longer valid.Expired 23 Apr 2024
20 Sywell Road has an approved single-storey rear extension on the planning record.
Extension: Single storey · Rear of property
Prior approval for single storey rear extension 4.6m from original dwelling 3.6m from maximum height
20 Sywell Road has more than doubled in price since the earliest registered sale in 1999.
£381,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.3% per year over 15 years.
£241,000
Growth on file: 6.3% per year over 15 years.
20 Sywell Road is notably below the street on epc rating.
Price per m²
£2,096
Street avg £2,642
Floor Area
115 m²
Street avg 156 m²
Habitable Rooms
5 rooms
Street avg 6 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

6 August 2014Most recent
£241,000
+153.8%over 15 years14 May 1999
£94,950
Median price across the last 5 sales in NN6 0AN: £485,000 (2025–2021).
CO₂ Emissions
8.2 t/year
Street avg 5.4 t/year
NN6 0PL
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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