Flat 4, 33 Colwyn Road, Northampton, NN1 3PZ
About Flat 4
Flat 4 is a one-bedroom semi-detached house in Northampton (NN1 3PZ). It has a recorded floor area of 26 m² (around 280 sq ft), construction records dating it to before 1900 and council tax band A. At 26 m² this is the smallest unit on EPC record across the building (26–35 m²). The building's EPC ratings span F to D, with this unit at the top. The latest certificate (November 2024) shows a D (score 55), a step below the typical UK home. The recommended improvements would push it to C (score 77). Main heating runs on electricity.
Across 1998–2025, sale prices on this property compounded at 3.2% per year. Today's modelled estimate of £112,000 sits 93.1% above the 2025 sale of £58,000. On a £-per-square-foot basis, the last sale (£207/sq ft) was about 57.1% above the typical sold price in the postcode. A recent sale: £58,000 in May 2025. At 26 m² it sits well below the postcode median (88 m² across 53 EPCs), making it one of the more compact homes locally.
What this property has
Inside
- Bedrooms1
- Bathrooms1
Building
- RefurbishedYes
Everything you need to know about Flat 4
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has no mains gas supply, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £820 · Includes VAT
Planning history
Flat 4 has no planning applications on record.
But the area is active
42 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Flat 4 has more than doubled in price since the earliest registered sale in 1998.
£112,000
Modelled from EPC, postcode comparables and a sale-price growth of 3.2% per year over 27 years.
£58,000
Growth on file: 3.2% per year over 27 years.
Sales timeline
29 May 2025Most recent
£58,000
+61.1%over 23 years15 February 2002
£36,000
+23.1%over 1 year19 January 2001
£29,250
+17.0%over 2 years20 November 1998
£25,000
Median price across the last 5 sales in NN1 3PZ: £225,000 (2023–2022).
Nearby sales in NN1 3PZ
Versus other Colwyn Road homes
On years held, Flat 4 runs well behind the street norm.
Price per m²
£2,231
Street avg £1,987
Floor Area
26 m²
Street avg 54 m²
Habitable Rooms
1 rooms
Street avg 3 rooms
CO₂ Emissions
2.1 t/year
Street avg 3.4 t/year
Everything you need to know about Flat 4
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
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The neighbourhood at a glance
Reported crime in the wider district is trending notably upward year-on-year.
Crime
11/mo
Rising year-on-year across the wider district.
Nearest stop
0.4 km
Racecourse Pavillion — bus stop.
Closest school
0.7 km
Northampton International Academy. 32 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
50.2dB
Night-time· 23:00 – 07:00
40.3dB