21 Connaught Street, Northampton, NN1 3BP
About 21 Connaught Street
21 Connaught Street is a mid-terrace house in Northampton (NN1 3BP). It has a recorded floor area of 92 m² (around 990 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (October 2018) 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 October 2008. The recommended improvements would lift it to C (score 77), a 2-band jump.
At 92 m² it's 15.7% larger than the typical home in the postcode (80 m² median across 24 EPCs). It lags the bulk of the postcode on energy efficiency (less efficient than 83% of similar EPCs).
Everything you need to know about 21 Connaught Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
21 Connaught Street's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
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 £820 · Includes VAT
Planning history
21 Connaught Street 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
21 Connaught Street has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£175,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in NN1 3BP: £161,000 (2024–2021).
Nearby sales in NN1 3BP
13 Connaught Street, Northampton, NN1 3BP
Sold Jul 2024
£160,00030 Connaught Street, Northampton, NN1 3BP
Sold Jul 2023
£161,000Top Flat, 3 Connaught Street, Northampton, NN1 3BP
Sold Jul 2022
£117,5007 Connaught Street, Northampton, NN1 3BP
Sold Mar 2022
£197,0005 Connaught Street, Northampton, NN1 3BP
Sold Oct 2021
£198,000
Versus other Connaught Street homes
21 Connaught Street is notably below the street on epc rating.
EPC Rating
47 (E)
Street avg 58 (D)
Floor Area
92 m²
Street avg 84 m²
CO₂ Emissions
6.5 t/year
Street avg 4.7 t/year
Habitable Rooms
5 rooms
Street avg 5 rooms
Everything you need to know about 21 Connaught 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

Similar properties nearby
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
Police Station — bus stop.
Closest school
0.4 km
Castle Academy. 30 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
53.6dB

Night-time· 23:00 – 07:00
43.7dB






