20 Austin Street, Northampton, NN1 3EY
About 20 Austin Street
20 Austin Street is a mid-terrace house in Northampton (NN1 3EY). It has a recorded floor area of 81 m² (around 872 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (December 2024) shows a C (score 75), near the top of the C band. When first surveyed in April 2018 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor, roof efficiency went from Very Poor to Very Good and window efficiency went from Average to Good. The recommended improvements would push it to B (score 89).
Sold December 2023 for £139,000. Across the public record there are 4 sales, relatively high churn for a single property. One planning record on file: an extension approved in 2024. Past consents include an extension and HMO conversion, meaningful when judging how the property has evolved. Its energy rating outperforms most of the postcode (better than 70% of similar EPCs). Across 2001–2023, sale prices on this property compounded at 4.7% per year. Today's modelled estimate of £188,000 is 35.3% above the 2023 sale price. On a £-per-square-foot basis, the last sale (£159/sq ft) was about 30.5% above the typical sold price in the postcode.
Everything you need to know about 20 Austin Street
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
Wall insulation improved
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 £820 · Includes VAT
Planning history
1 application on record at 20 Austin Street, Northampton, NN1 3EY
- May 2024HMOFullOutcome in report
Extension: Rear of property
Change of Use from Dwelling (Use Class C3) to House in Multiple Occupation (Use Class C4) for 4 occupants including single story rear extensions
Extension- Documents
- 25 docs on file
- Reference
- 2024/1524/FULL
Unlock 20 Austin Street, Northampton, NN1 3EY's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 42 notable nearby
- The 25 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
20 Austin Street has more than doubled in price since the earliest registered sale in 2001.
£188,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.7% per year over 23 years.
£139,000
Growth on file: 4.7% per year over 23 years.
Sales timeline
6 December 2023Most recent
£139,000
-4.1%over 4 years15 February 2019
£145,000
+22.9%over 11 years17 September 2007
£118,000
+140.8%over 6 years2 March 2001
£49,000
Median price across the last 5 sales in NN1 3EY: £160,000 (2024–2023).
Nearby sales in NN1 3EY
Versus other Austin Street homes
On epc rating, 20 Austin Street stands well clear of the street.
Price per m²
£1,716
Street avg £1,646
Floor Area
81 m²
Street avg 81 m²
Habitable Rooms
5 rooms
Street avg 4 rooms
CO₂ Emissions
2.4 t/year
Street avg 4.5 t/year
Everything you need to know about 20 Austin 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
0.4 km
NIA Academy — bus stop.
Closest school
0.5 km
Northampton International Academy. 32 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
51.9dB

Night-time· 23:00 – 07:00
42.2dB






