Our Data Sources
Flat G3, Sigma House, Northampton has a single entry in the Land Registry from June 2007 and a single entry in the EPC database dated July 2023.
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
The condition of a property plays an important role in determining its value, with the degree of impact varying by property type, size and location.
For Flat G3, Sigma House, Northampton, we estimate a market value of £106,151 and a rental value of £735 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £94,019 and £651 per month respectively.
Energy Efficiency
Flat G3, Sigma House, Northampton has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 17 Jul 2023.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Room heaters, electric.
Sold Prices
The most recent sale of Flat G3, Sigma House, Northampton completed on 29th June 2007 at £101,495 and was recorded by HM Land Registry as a leasehold flat.
Since 1995 this is the property's only sale.
Values of comparable properties have risen by 36.3% over the period since June 2007.
- Sold Jun 2007£101,495
Similar Properties Sold Nearby
Over the past 2 years 20 properties similar to Flat G3, Sigma House, Northampton have sold within a radius of 370 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 25th July 2025, was Flat 18, Darenth Court, Upper Priory Street, Northampton, NN1 2TY, a leasehold flat which sold for £89,000.
Read more about house prices in NN1.
- Sold Jul 2025£89,000 | 1 Bed FlatFlat 18, Darenth Court, Upper Priory Street, Northampton, NN1 2TYFlat 18, Darenth Court, Upper Priory Street, Northampton, NN1 2TY
- Sold Feb 2024£88,700 | 1 Bed FlatFlat 7, Belmont Court, Upper Priory Street, Northampton, NN1 2TUFlat 7, Belmont Court, Upper Priory Street, Northampton, NN1 2TU
- Sold Dec 2020£97,000 | 1 Bed FlatFlat 407, Delta House, St. Andrews Street, Northampton, NN1 2HAFlat 407, Delta House, St. Andrews Street, Northampton, NN1 2HA
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Location Comparison
Of the 18 addresses on Narrow Lane, Northampton, NN1, Flat G3, Sigma House, Northampton comes out as the 18th largest and the 18th most expensive in our analysis of the public data.
It is also £95k less expensive than the average property across the NN1 district.
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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
Broadband here reaches superfast speeds, based on recent Ofcom data.
According to recent data from Ofcom, Superfast Broadband is available in the area.
Risk of Flooding
The flood risk here is rated Very Low, based on Environment Agency data.












