Our Data Sources
18, St. Martins Road, Knebworth has no records in the the Land Registry and a single entry in the EPC database dated August 2013.
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 18, St. Martins Road, Knebworth would be worth £834,613, with a potential rental value of £2,679 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £739,229, with a rental value of £2,373 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Plot Size
18, St. Martins Road, Knebworth occupies a 525 m2 plot as recorded by HM Land Registry.
Of the 20 other houses in this postcode, 18 have recorded plot sizes, and this one ranks as the 16th largest.
Energy Efficiency
18, St. Martins Road, Knebworth has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 09 Aug 2013.
The property is not connected to mains gas and has fully double glazed windows. It is heated using Boiler and radiators, mains gas.
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 39 sales of comparable properties within 1.1 kilometres of 18, St. Martins Road, Knebworth across the last 2 years.
Most recently, 82, London Road, Knebworth, SG3 6HB, a freehold house, sold at £915,000 on the 19th March 2026.
Read more about house prices in SG3.
- Sold Mar 2026£915,000 | 3 Bed House82, London Road, Knebworth, SG3 6HB82, London Road, Knebworth, SG3 6HB
- Sold Feb 2025£850,000 | 4 Bed House31, Stevenage Road, Knebworth, SG3 6NN31, Stevenage Road, Knebworth, SG3 6NN
- Sold Nov 2020£595,000 | 4 Bed House24, Watton Road, Knebworth, SG3 6AH24, Watton Road, Knebworth, SG3 6AH
•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 18, St. Martins Road, Knebworth as the 18th largest and the 18th most expensive of the 53 addresses on St. Martins Road, Knebworth, SG3.
Against the SG3 postcode district average, it is £250k more expensive than the typical property.
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Schools Nearby
- Knebworth Primary and Nursery School200 m away
- All Saints Church of England Voluntary Aided Primary School, Datchworth1.5 km away
- St Michael's Woolmer Green CofE VA Primary School1.7 km away
- Barnwell School2.7 km away
- Marriotts School4.2 km away
- The Nobel School5.1 km away
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Public Transport Nearby
- Knebworth|500 m away
- Watton-at-Stone|4.3 km away
- Stevenage|4.4 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.
