50 Semilong Road, Northampton, NN2 6BU
About 50 Semilong Road
50 Semilong Road is a mid-terrace house in Northampton (NN2 6BU). It has a recorded floor area of 143 m² (around 1539 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (March 2025) shows a C (score 73). When first surveyed in July 2009 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Very Poor to Good, hot-water efficiency went from Average to Good and lighting went from Average to Very Good. The recommended improvements would push it to B (score 84).
On energy efficiency it sits in the top 10% of properties in this postcode. Across 1995–2019, sale prices on this property compounded at 7.1% per year. Today's modelled estimate of £259,000 is 17.7% above the 2019 sale price. On a £-per-square-foot basis, the last sale (£143/sq ft) was about 139.6% above the typical sold price in the postcode. Most recent transfer: March 2019 at £220,000.
Everything you need to know about 50 Semilong Road
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
50 Semilong Road ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
More low energy lighting installed
Heating controls upgraded for better temperature management
Window efficiency improved
Wall insulation improved
More low energy lighting installed
Hot water system upgraded
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
50 Semilong Road has no planning applications on record.
But the area is active
37 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
Price for 50 Semilong Road has grown more than fourfold since the 1995 starting point.
£259,000
Modelled from EPC, postcode comparables and a sale-price growth of 7.1% per year over 23 years.
£220,000
Growth on file: 7.1% per year over 23 years.
Sales timeline
8 March 2019Most recent
£220,000
+286.0%over 21 years2 October 1997
£57,000
+29.5%over 1 year10 October 1995
£44,000
Median price across the last 5 sales in NN2 6BU: £156,000 (2022–2005).
Nearby sales in NN2 6BU
Versus other Semilong Road homes
On price per m², 50 Semilong Road stands well clear of the street.
Price per m²
£1,538
Street avg £1,099
Floor Area
143 m²
Street avg 137 m²
Habitable Rooms
6 rooms
Street avg 7 rooms
CO₂ Emissions
4.3 t/year
Street avg 6.6 t/year
Everything you need to know about 50 Semilong Road
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
Marriott Street — bus stop.
Closest school
0.3 km
Northampton International Academy. 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
51.2dB
Night-time· 23:00 – 07:00
41.7dB