Our Data Sources
Flat G2, Sigma House, Northampton has 2 entries in the Land Registry , most recently in September 2013 and a single entry in the EPC database dated August 2019.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 3 out of 5 and is considered of medium accuracy.
Price Range & Condition
In very good condition, we estimate Flat G2, Sigma House, Northampton would be worth £141,467, with a potential rental value of £949 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £125,299, with a rental value of £840 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
Flat G2, Sigma House, Northampton has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 20 Aug 2019.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Room heaters, electric.
Sold Prices
Flat G2, Sigma House, Northampton last changed hands on 3rd September 2013, selling for £106,000. The transaction was logged as a leasehold flat by HM Land Registry.
In total it has sold twice since 1995.
The market for similar properties has risen by 60.2% since September 2013.
- Sold Sep 2013£106,000
- Sold Dec 2008£130,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 184 sales of comparable properties within 370 metres of Flat G2, Sigma House, Northampton across the last 2 years.
Most recently, Flat 516, Alpha House, Broad Street, Northampton, NN1 2HQ, a leasehold flat, sold at £100,000 on the 18th February 2026.
Read more about house prices in NN1.
- Sold Feb 2026£100,000 | 2 Bed FlatFlat 516, Alpha House, Broad Street, Northampton, NN1 2HQFlat 516, Alpha House, Broad Street, Northampton, NN1 2HQ
- Sold Dec 2025£110,000 | 2 Bed FlatFlat 515, Alpha House, Broad Street, Northampton, NN1 2HQFlat 515, Alpha House, Broad Street, Northampton, NN1 2HQ
- Sold Mar 2025£135,000 | 2 Bed FlatFlat 317, Alpha House, Broad Street, Northampton, NN1 2HQFlat 317, Alpha House, Broad Street, Northampton, NN1 2HQ
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Our analysis of the public data ranks Flat G2, Sigma House, Northampton as the 3rd largest and the 3rd most expensive of the 18 addresses on Narrow Lane, Northampton, NN1.
Against the NN1 postcode district average, it is £62k less expensive than the typical property.
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Schools Nearby
- Castle Academy200 m away
- Spring Lane Primary School300 m away
- St James Church of England Primary School1.1 km away
- Malcolm Arnold Academy1.5 km away
- Northampton School for Boys2.2 km away
- Abbeyfield School2.9 km away
More reading links
Public Transport Nearby
- Northampton|700 m away
- Long Buckby|14.0 km away
- Wellingborough|16.7 km away
Available Internet Speeds
Ofcom's latest figures show superfast broadband available in this area.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.












