Our Data Sources
Flat 6, Knapp House 20, Grantham has no records in the the Land Registry and a single entry in the EPC database dated September 2025.
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
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 6, Knapp House 20, Grantham, we estimate a market value of £76,030 and a rental value of £469 per month when presented in very good decorative order. Should the property require extensive cosmetic improvement, those figures would reduce to £67,341 and £415 per month respectively.
Energy Efficiency
Flat 6, Knapp House 20, Grantham has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 05 Sep 2025.
The property is not connected to mains gas and has high performance glazing. It is heated using Room heaters, electric.
Similar Properties Sold Nearby
Over the past 2 years 3 properties similar to Flat 6, Knapp House 20, Grantham have sold within a radius of 530 metres, per the Land Registry and our network of Estate Agents.
The latest, on the 19th June 2024, was 32A, Alford Street, Grantham, NG31 8BX, a leasehold flat which sold for £65,000.
Read more about house prices in NG31.
- Sold Jun 2024£65,000 | 2 Bed Flat32A, Alford Street, Grantham, NG31 8BX32A, Alford Street, Grantham, NG31 8BX
- Sold Oct 2022£148,000 | 1 Bed Flat8A, Albion Road, Grantham, NG31 8BJ8A, Albion Road, Grantham, NG31 8BJ
- Sold May 2019£236,000 | 1 Bed Flat64, Westgate, Grantham, NG31 6LA64, Westgate, Grantham, NG31 6LA
•Nearby is defined as the radius comprising the nearest 2,000 addresses.
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Location Comparison
Of the 85 addresses on Swinegate, Grantham, NG31, Flat 6, Knapp House 20, Grantham comes out as the 76th largest and the 76th most expensive in our analysis of the public data.
It is also £137k less expensive than the average property across the NG31 district.
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Schools Nearby
- 100mSt Wulfram's National Church of England Primary School
- 700mThe Little Gonerby Church of England Primary Academy, Grantham
- 900mSaint Mary's Catholic Voluntary Academy
- 200mThe King's School, Grantham
- 600mKesteven and Grantham Girls' School
- 1.0kmThe Priory Ruskin Academy
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Public Transport Nearby
- 900mGrantham
- 10.8kmBottesford
- 10.9kmAncaster
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.












