21 Byron Street, Northampton, NN2 7JE
About 21 Byron Street
21 Byron Street is a three-bedroom mid-terrace house in Northampton (NN2 7JE). It has a recorded floor area of 81 m² (around 872 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (October 2022) shows a D (score 64), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since September 2009. Between certificates, roof efficiency went from Very Poor to Average and lighting went from Poor to Very Good; while window efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 82), a 2-band jump.
It hasn't traded since October 2009, a hold of 17 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Across 2000–2009, sale prices on this property compounded at 6.8% per year. Today's modelled estimate of £205,000 sits 66.7% above the 2009 sale of £123,000.
What this property has
Inside
- Bedrooms3
- EnsuiteYes
Building
- Central heatingYes
Everything you need to know about 21 Byron Street
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
Roof 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 been extended more than once, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
21 Byron Street has no planning applications on record.
But the area is active
25 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
21 Byron Street's estimated value is more than triple its earliest registered sale price (2000).
£205,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.8% per year over 10 years.
£123,000
Growth on file: 6.8% per year over 10 years.
Sales timeline
30 October 2009Most recent
£123,000
+2.5%over 1 year17 July 2008
£120,000
+83.2%over 8 years6 April 2000
£65,500
Median price across the last 5 sales in NN2 7JE: £205,000 (2025–2024).
Nearby sales in NN2 7JE
Versus other Byron Street homes
On price per m², 21 Byron Street runs well behind the street norm.
Price per m²
£1,519
Street avg £2,074
Floor Area
81 m²
Street avg 82 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
3.8 t/year
Street avg 4.2 t/year
Everything you need to know about 21 Byron Street
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
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Crime
27/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Co-op — bus stop.
Closest school
0.5 km
Kingsley Primary School. 35 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
52.0dB
Night-time· 23:00 – 07:00
42.1dB