Flat 1, 33 Colwyn Road, Northampton, NN1 3PZ
About Flat 1
Flat 1 is a mid-terrace house in Northampton (NN1 3PZ). It has a recorded floor area of 33 m² (around 355 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (May 2024) shows an E (score 47), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since March 2018. Between certificates, wall efficiency went from Very Poor to Poor; while main heating dropped from Average to Very Poor. The recommended improvements would lift it to C (score 73), a 2-band jump. Main heating runs on electricity. At 33 m² this is the 5th smallest of 6 units on EPC record in the building, where floor areas span 26–35 m². The building's EPC ratings span F to D across 6 units on file.
Across 1996–2022, sale prices on this property compounded at 7.6% per year. Today's modelled estimate of £108,000 sits 58.8% above the 2022 sale of £68,000. On a £-per-square-foot basis, the last sale (£191/sq ft) was about 46.1% above the typical sold price in the postcode. At 33 m² it sits well below the postcode median (88 m² across 53 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 72% of similar EPCs). Most recent transfer: May 2022 at £68,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Everything you need to know about Flat 1
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating system changed
Heating controls upgraded for better temperature management
Hot water system changed
Wall insulation improved
More low energy lighting installed
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 1 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
Price for Flat 1 has grown more than fourfold since the 1996 starting point.
£108,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.6% per year over 26 years.
£68,000
Growth on file: 7.6% per year over 26 years.
Sales timeline
19 May 2022Most recent
£68,000
+580.0%over 26 years25 April 1996
£10,000
Median price across the last 5 sales in NN1 3PZ: £225,000 (2025–2022).
Nearby sales in NN1 3PZ
Versus other Colwyn Road homes
Habitable Rooms for Flat 1 lags the street by a wide margin.
Price per m²
£2,061
Street avg £2,008
Floor Area
33 m²
Street avg 54 m²
Habitable Rooms
1 rooms
Street avg 3 rooms
CO₂ Emissions
3.1 t/year
Street avg 3.4 t/year
Everything you need to know about Flat 1
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee

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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






