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Get started9 High Street is a three-bedroom semi-detached house in Welford, Northampton, Northampton (NN6 6HT). It has a recorded floor area of 86 m² (around 926 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (February 2016) shows an F (score 24), near the bottom of the EPC scale. The rating has held steady at F across 4 certificates since February 2009. Between certificates, hot-water efficiency went from Average to Good, lighting went from Good to Very Good and main heating went from Poor to Average. The recommended improvements would lift it to B (score 90), a 4-band jump. Main heating runs on electricity. The latest certificate is from February 2016, so improvements made since then won't be reflected. The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal. Other recorded features include notable views, a conservatory and a basement. Period features are noted in the property record.
Sale prices here have outpaced England HPI: 8.7% per year against 0% for the wider region. Today's modelled estimate of £370,000 is 48% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£270/sq ft) was about 65.1% above the typical sold price in the postcode. At 86 m² it's 23.2% smaller than the typical home in the postcode (112 m² median across 52 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 77% of similar EPCs). Last changed hands 11 years ago, in May 2015.
9 High Street's carbon output runs well above what efficient homes in the postcode produce.
This certificate is over 10 years old and is no longer valid.Expired 19 Feb 2026
9 High Street valuation sits well clear of the typical sold price in this postcode.
£370,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.7% per year over 4 years.
£249,950
Growth on file: 8.7% per year over 4 years.
9 High Street is notably below the street on epc rating.
Price per m²
£2,906
Street avg £2,327
Floor Area
86 m²
Street avg 140 m²
Habitable Rooms
6 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
0.0 km

Daytime· 07:00 – 23:00
44.5dB

Changes detected from historical EPC data
Single glazing replaced with double or better glazing
Low energy lighting percentage decreased
Low energy lighting percentage decreased
Heat pump installed, significantly improving energy efficiency
Heating controls upgraded for better temperature management
Hot water system upgraded
Loft insulation upgraded to recommended levels
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
29 May 2015Most recent
£249,950
+42.8%over 4 years11 February 2011
£175,000
Median price across the last 5 sales in NN6 6HT: £320,000 (2025–2025).
CO₂ Emissions
7.1 t/year
Street avg 8.7 t/year
NN6 6EF
Orchard Terrace — bus stop.
Closest school
0.2 km
Welford Sibbertoft and Sulby Endowed School. 1 school nearby.
Night-time· 23:00 – 07:00
37.6dB
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