9 Blackwell Hill, Northampton, NN4 9YB
About 9 Blackwell Hill
9 Blackwell Hill is a four-bedroom detached house in Northampton (NN4 9YB). It has a recorded floor area of 85 m² (around 915 sq ft), construction records dating it to 1983-1990 and council tax band D. The latest certificate (April 2015) shows an E (score 53), well below the UK norm with real room to improve. Earlier certificates rated it D (January 2011); the latest reading is one band lower. Between certificates, lighting went from Very Poor to Average and main heating went from Average to Good; while hot-water efficiency dropped from Average to Poor. The recommended improvements would lift it to C (score 80), a 2-band jump. The latest certificate is from April 2015, so improvements made since then won't be reflected.
Across 1999–2015, sale prices on this property compounded at 5.6% per year. Today's modelled estimate of £302,000 sits 51% above the 2015 sale of £200,000. On a £-per-square-foot basis, the last sale (£219/sq ft) was about 33.2% above the typical sold price in the postcode. It lags the bulk of the postcode on energy efficiency (less efficient than 88% of similar EPCs). On the market in June 2015 and unlisted since — roughly 11 years.
What this property has
Inside
- Bedrooms4
- EnsuiteYes
Outside
- GarageYes
Building
- Heating systemElectric
Everything you need to know about 9 Blackwell Hill
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 14 Apr 2025
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system changed
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Planning history
9 Blackwell Hill has no planning applications on record.
A planning report still maps activity across the surrounding area and reads this property's extension & conversion potential.
Sales history & valuation
9 Blackwell Hill has more than doubled in price since the earliest registered sale in 1999.
£302,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.6% per year over 16 years.
£200,000
Growth on file: 5.6% per year over 16 years.
Sales timeline
29 June 2015Most recent
£200,000
+141.0%over 16 years6 May 1999
£83,000
Median price across the last 5 sales in NN4 9YB: £299,995 (2025–2023).
Nearby sales in NN4 9YB
Versus other Blackwell Hill homes
9 Blackwell Hill is notably below the street on epc rating.
Price per m²
£2,353
Street avg £2,642
Floor Area
85 m²
Street avg 99 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
4.9 t/year
Street avg 4.2 t/year
Everything you need to know about 9 Blackwell Hill
The true value, the hidden risks and the full sale history, in one report.
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One time fee only - money back guarantee
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Similar properties nearby
The neighbourhood at a glance
Crime
9/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Tideswell Close — bus stop.
Closest school
0.9 km
Simon de Senlis Primary School. 17 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
54.4dB
Night-time· 23:00 – 07:00
46.3dB