23 Robert Street, Northampton, NN1 3BL
About 23 Robert Street
23 Robert Street is a mid-terrace house in Northampton (NN1 3BL). It has a recorded floor area of 77 m² (around 829 sq ft), construction records dating it to before 1900 and council tax band A. The latest certificate (March 2013) shows a D (score 58), a step below the typical UK home. The recommended improvements would push it to C (score 78). The latest certificate is from March 2013, so improvements made since then won't be reflected.
Across 1999–2013, sale prices on this property compounded at 6.5% per year. Today's modelled estimate of £192,000 is 49.4% above the 2013 sale price. On a £-per-square-foot basis, the last sale (£155/sq ft) was about 32% above the typical sold price in the postcode. 13 years since the last transfer (June 2013). At 77 m² it's 21.4% smaller than the typical home in the postcode (98 m² median across 11 EPCs).
Everything you need to know about 23 Robert Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
23 Robert Street's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 12 Mar 2023
EPC Rating
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 £820 · Includes VAT
Planning history
23 Robert 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
Sale price has at least doubled since 1999.
£192,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.5% per year over 14 years.
£128,500
Growth on file: 6.5% per year over 14 years.
Sales timeline
27 June 2013Most recent
£128,500
+142.5%over 13 years1 July 1999
£53,000
Median price across the last 5 sales in NN1 3BL: £225,000 (2024–2021).
Nearby sales in NN1 3BL
Versus other Robert Street homes
On epc rating, 23 Robert Street runs well behind the street norm.
Price per m²
£1,669
Street avg £1,689
Floor Area
77 m²
Street avg 102 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
4.0 t/year
Street avg 4.7 t/year
Everything you need to know about 23 Robert 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
0.1 km
Police Station — bus stop.
Closest school
0.4 km
Castle 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
53.9dB

Night-time· 23:00 – 07:00
43.9dB






