Our Data Sources
Flat 3, 9, Castilian Street, Northampton has no records in the the Land Registry and a single entry in the EPC database dated December 2020.
We combine this information with public data of neighbouring properties to estimate the property attributes and values.
The local information is scored as 1 out of 5 and is considered of low accuracy.
Price Range & Condition
In very good condition, we estimate Flat 3, 9, Castilian Street, Northampton would be worth £145,466, with a potential rental value of £810 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £128,841, with a rental value of £718 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
Flat 3, 9, Castilian Street, Northampton has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 23 Dec 2020.
The property is not connected to mains gas and has high performance glazing. It is heated using Room heaters, electric.
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 3 sales of comparable properties within 380 metres of Flat 3, 9, Castilian Street, Northampton across the last 2 years.
Most recently, Flat 7, 9, Derngate, Northampton, NN1 1TY, a leasehold flat, sold at £145,000 on the 26th March 2026.
Read more about house prices in NN1.
- Sold Mar 2026£145,000 | 1 Bed FlatFlat 7, 9, Derngate, Northampton, NN1 1TYFlat 7, 9, Derngate, Northampton, NN1 1TY
- Sold Dec 2025£158,000 | 1 Bed FlatFlat 5, 40-42, Derngate, Northampton, NN1 1UHFlat 5, 40-42, Derngate, Northampton, NN1 1UH
- Sold Nov 2025£165,000 | 1 Bed FlatFlat 50, 9, Derngate, Northampton, NN1 1TYFlat 50, 9, Derngate, Northampton, NN1 1TY
•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 3, 9, Castilian Street, Northampton as the 48th largest and the 34th most expensive of the 72 addresses on Castilian Street, Northampton, NN1.
Against the NN1 postcode district average, it is £59k less expensive than the typical property.
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Schools Nearby
- 800mSpring Lane Primary School
- 800mCastle Academy
- 900mVernon Terrace Primary School
- 1.7kmNorthampton School for Boys
- 1.9kmMalcolm Arnold Academy
- 2.5kmAbbeyfield School
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Public Transport Nearby
- 1.0kmNorthampton
- 14.7kmLong Buckby
- 16.5kmWellingborough
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.
