4 Castle Street, Wellingborough, NN8 1LS
About 4 Castle Street
4 Castle Street is a two-bedroom detached house in Wellingborough (NN8 1LS). It has a recorded floor area of 49 m² (around 527 sq ft), construction records dating it to 1983-1990 and council tax band B. The latest certificate (April 2026) shows a C (score 70). The rating has held steady at C across 2 certificates since May 2010. Between certificates, window efficiency dropped from Good to Average and lighting dropped from Very Good to Poor. This certificate was lodged in the last six months, so the rating reflects current condition. At 49 m² this is the 10th smallest of 25 units on EPC record in the building, where floor areas span 37–220 m². The building's EPC ratings span D to B across 25 units on file.
Across 1995–2011, sale prices on this property compounded at 5.1% per year. Today's modelled estimate of £135,000 sits 92.9% above the 2011 sale of £70,000. On the market in December 2011 and unlisted since — roughly 15 years.
What this property has
Inside
- Bedrooms2
- Bathrooms1
- EnsuiteYes
Outside
- Private gardenYes
- ParkingAllocated
Building
- RefurbishedYes
Energy performance
4 Castle Street's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 15 April 2036
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
Low energy lighting percentage decreased
Get a survey for this property
Level 2 HomeBuyer Report
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Planning history
4 Castle Street has no planning applications on record.
But the area is active
3 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
4 Castle Street has more than doubled in price since the earliest registered sale in 1995.
£135,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.1% per year over 16 years.
£70,000
Growth on file: 5.1% per year over 16 years.
Sales timeline
9 December 2011Most recent
£70,000
+125.8%over 12 years18 February 1999
£31,000
24 August 1995
£31,000
Median price across the last 5 sales in NN8 1LS: £130,000 (2024–2022).
Nearby sales in NN8 1LS
1 Castle Street, Wellingborough, NN8 1LS
Sold Apr 2024
£315,000Park View, Flat 2, Castle Street, Wellingborough, NN8 1LS
Sold Mar 2024
£122,500Park View, Flat 3, Castle Street, Wellingborough, NN8 1LS
Sold Feb 2024
£115,000Park View, Flat 8, Castle Street, Wellingborough, NN8 1LS
Sold Aug 2023
£131,0008 Castle Street, Wellingborough, NN8 1LS
Sold Sept 2022
£130,000
Versus other Castle Street homes
Price per m² for 4 Castle Street lags the street by a wide margin.
Price per m²
£1,429
Street avg £1,714
Floor Area
49 m²
Street avg 49 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
1.5 t/year
Street avg 2.3 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
456/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
All Saints Church — bus stop.
Closest school
0.0 km
All Saints CEVA Primary School and Nursery. 18 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
53.3dB

Night-time· 23:00 – 07:00
43.9dB







