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 £207,000 sits 68.3% 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
Certificate validity
Valid until 2 October 2032
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
24 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).
£207,000
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: £215,000 (2026–2024).
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 £2,083
Floor Area
81 m²
Street avg 82 m²
Habitable Rooms
4 rooms
Street avg 4 rooms
CO₂ Emissions
3.8 t/year
Street avg 4.0 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 · from £14.99
One time fee only - money back guarantee
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Crime
373/mo
Falling 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