18 Excalibur Close, Northampton, NN5 4BJ
About 18 Excalibur Close
18 Excalibur Close is a four-bedroom detached house in Northampton (NN5 4BJ). It has a recorded floor area of 140 m² (around 1507 sq ft), construction records dating it to 1991-1995 and council tax band F. The latest certificate (October 2015) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 83), a 2-band jump. The latest certificate is from October 2015, so improvements made since then won't be reflected.
Untraded for 19 years, with the last transfer in September 2007. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. Across 2007–2007, sale prices on this property compounded at 9.1% per year. Today's modelled estimate of £450,000 sits 50% above the 2007 sale of £299,995. On a £-per-square-foot basis, the last sale (£199/sq ft) was about 61.1% above the typical sold price in the postcode. At 140 m² it's 21.7% smaller than the typical home in the postcode (179 m² median across 14 EPCs). One historical planning record sits against the property in 2024.
Know exactly what you're buying at 18 Excalibur Close
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms4
- Dining roomYes
- CloakroomYes
- EnsuiteYes
- StudyYes
Outside
- GarageDouble
Energy performance
18 Excalibur Close'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This certificate is over 10 years old and is no longer valid.Expired 06 Oct 2025
EPC Rating
Planning history
- Feb 2024RenovationFullIn report
Installation of heat pump on side elevation
- Documents
- 23 docs on file
- Reference
- WNN/2023/0496
We flagged 2 things worth checking at 18 Excalibur Close
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Signs of HMO activity in the area
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
18 Excalibur Close changed hands twice within eighteen months — unusual for the area.
£450,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.1% per year over 1 year.
£299,995
Growth on file: 9.1% per year over 1 year.
Sales timeline
6 September 2007Most recent
£299,995
+9.1%15 August 2007
£275,000
Median price across the last 5 sales in NN5 4BJ: £425,000 (2024–2011).
Nearby sales in NN5 4BJ
10 Excalibur Close, Northampton, NN5 4BJ
Sold Jul 2024
£640,00014 Excalibur Close, Northampton, NN5 4BJ
Sold Sept 2023
£500,00020 Excalibur Close, Northampton, NN5 4BJ
Sold Apr 2017
£406,50012 Excalibur Close, Northampton, NN5 4BJ
Sold Jul 2016
£425,00017 Excalibur Close, Northampton, NN5 4BJ
Sold Nov 2011
£324,000
Everything we know about 18 Excalibur Close, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby

Versus other Excalibur Close homes
On habitable rooms, 18 Excalibur Close runs well behind the street norm.
Price per m²
£2,143
Street avg £2,020
Floor Area
140 m²
Street avg 177 m²
Habitable Rooms
7 rooms
Street avg 8 rooms
CO₂ Emissions
6.4 t/year
Street avg 6.9 t/year
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
The Duston School — bus stop.
Closest school
0.3 km
The Duston School. 15 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
47.7dB

Night-time· 23:00 – 07:00
38.3dB