18 Blackwell Hill, Northampton, NN4 9YB
About 18 Blackwell Hill
18 Blackwell Hill is a detached house in Northampton (NN4 9YB). It has a recorded floor area of 153 m² (around 1647 sq ft), construction records dating it to 1983-1990 and council tax band D. The latest certificate (October 2011) shows a D (score 60), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 69). The latest certificate is from October 2011, so improvements made since then won't be reflected.
At 153 m² the property is well over the postcode median (91 m² across 24 EPCs), placing it in the larger end of the local stock. One planning record on file: an extension approved in 2013. Past consents include an extension, meaningful when judging how the property has evolved.
Everything you need to know about 18 Blackwell Hill
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
18 Blackwell Hill's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 21 Oct 2021
EPC Rating
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Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
Planning history
1 application on record at 18 Blackwell Hill, Northampton, NN4 9YB
- Jul 2013ExtensionFullOutcome in report
Extension: Single storey · Side and rear of property
First floor side extension and single-storey rear extension.
- Documents
- 6 docs on file
- Reference
- N/2013/0449
Unlock 18 Blackwell Hill, Northampton, NN4 9YB's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full
- The 6 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
18 Blackwell Hill has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£408,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in NN4 9YB: £299,995 (2025–2023).
Nearby sales in NN4 9YB
Versus other Blackwell Hill homes
On co₂ emissions, 18 Blackwell Hill runs well behind the street norm.
EPC Rating
60 (D)
Street avg 63 (D)
Floor Area
153 m²
Street avg 96 m²
CO₂ Emissions
6.0 t/year
Street avg 4.1 t/year
Habitable Rooms
7 rooms
Street avg 5 rooms
Everything you need to know about 18 Blackwell Hill
The true value, the hidden risks and the full sale history, in one report.
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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