20 Excalibur Close, Northampton, NN5 4BJ
About 20 Excalibur Close
20 Excalibur Close is a four-bedroom detached house in Northampton (NN5 4BJ). It has a recorded floor area of 131 m² (around 1410 sq ft), construction records dating it to 1991-1995 and council tax band F. The latest certificate (April 2016) shows a D (score 66), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 79). The latest certificate is from April 2016, so improvements made since then won't be reflected. Other recorded features include a conservatory.
2 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension and partial demolition, meaningful when judging how the property has evolved. Across 1997–2017, sale prices on this property compounded at 6.1% per year. Today's modelled estimate of £525,000 is 29.2% above the 2017 sale price. On a £-per-square-foot basis, the last sale (£288/sq ft) was about 128.4% above the typical sold price in the postcode. Last changed hands 9 years ago, in April 2017. At 131 m² it's 26.8% smaller than the typical home in the postcode (179 m² median across 14 EPCs).
Know exactly what you're buying at 20 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
- EnsuiteYes
- ConservatoryYes
Outside
- Private gardenFront and rear
- GarageDouble, Detached
Building
- RefurbishedYes
Energy performance
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 12 Apr 2026
EPC Rating
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Jul 2018DemolitionFullIn report
Extension: Rear of property
Ground and first floor rear extensions and removal of existing conservatory
Extension- Documents
- 17 docs on file
- Reference
- N/2018/0751
- Oct 2017ExtensionFullIn report
Extension: Single storey · Front of property
First floor extension over existing ground floor study to front elevation
- Documents
- 19 docs on file
- Reference
- N/2017/1110
We flagged 2 things worth checking at 20 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
Sale price has grown by over 3x since 1997.
£525,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.1% per year over 20 years.
£406,500
Growth on file: 6.1% per year over 20 years.
Sales timeline
23 April 2017Most recent
£406,500
+29.0%over 9 years9 August 2007
£315,000
+154.0%over 10 years14 February 1997
£124,000
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
£500,00012 Excalibur Close, Northampton, NN5 4BJ
Sold Jul 2016
£425,00017 Excalibur Close, Northampton, NN5 4BJ
Sold Nov 2011
£324,0005 Excalibur Close, Northampton, NN5 4BJ
Sold Oct 2011
£325,000
Everything we know about 20 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
20 Excalibur Close is notably below the street on floor area.
Price per m²
£3,103
Street avg £1,932
Floor Area
131 m²
Street avg 178 m²
Habitable Rooms
8 rooms
Street avg 8 rooms
CO₂ Emissions
5.2 t/year
Street avg 7.0 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