11 Harold Street, Northampton, NN1 5QZ
About 11 Harold Street
11 Harold Street is a two-bedroom mid-terrace house in Northampton (NN1 5QZ). It has a recorded floor area of 74 m² (around 797 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (June 2018) shows a D (score 68), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since March 2012. Between certificates, roof efficiency went from Very Poor to Good and lighting went from Good to Very Good. The recommended improvements would lift it to B (score 87), a 2-band jump.
Across 2014–2018, sale prices on this property compounded at 9.2% per year. Today's modelled estimate of £216,000 is 17.4% above the 2018 sale price. On a £-per-square-foot basis, the last sale (£231/sq ft) was about 54.8% above the typical sold price in the postcode. Most recent transfer: October 2018 at £184,000.
What this property has
Inside
- Bedrooms2
- Bathrooms1
Everything you need to know about 11 Harold 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
Loft insulation installed or upgraded to 250mm+
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919 and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
11 Harold Street has no planning applications on record.
But the area is active
49 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
11 Harold Street valuation sits well clear of the typical sold price in this postcode.
£216,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.2% per year over 4 years.
£184,000
Growth on file: 9.2% per year over 4 years.
Sales timeline
18 October 2018Most recent
£184,000
+41.5%over 3 years12 November 2014
£130,000
Median price across the last 5 sales in NN1 5QZ: £185,000 (2025–2023).
Nearby sales in NN1 5QZ
Versus other Harold Street homes
CO₂ Emissions for 11 Harold Street runs comfortably ahead of the street norm.
Price per m²
£2,486
Street avg £2,259
Floor Area
74 m²
Street avg 79 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
CO₂ Emissions
3.0 t/year
Street avg 3.8 t/year
Everything you need to know about 11 Harold 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

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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
0.2 km
Abington Square — bus stop.
Closest school
0.4 km
Vernon Terrace Primary School. 31 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
54.2dB

Night-time· 23:00 – 07:00
43.9dB






