Our Data Sources
21B, Gun Lane, Knebworth has a single entry in the Land Registry from January 2014 and a single entry in the EPC database dated August 2013.
We combine this information with that of neighbouring properties to estimate the property attributes and values.
The local information is scored as 4 out of 5 and is considered of high accuracy.
Price Range & Condition
In very good condition, we estimate 21B, Gun Lane, Knebworth would be worth £502,682, with a potential rental value of £2,081 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £445,233, with a rental value of £1,843 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
21B, Gun Lane, Knebworth has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 12 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.
Sold Prices
21B, Gun Lane, Knebworth last changed hands on 24th January 2014, selling for £321,000. The transaction was logged as a freehold house by HM Land Registry.
That is its only recorded sale since 1995.
The market for similar properties has risen by 55.8% since January 2014.
- Sold Jan 2014£321,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 123 sales of comparable properties within 890 metres of 21B, Gun Lane, Knebworth across the last 2 years.
Most recently, 17, Sayer Way, Knebworth, SG3 6BN, a freehold house, sold at £500,000 on the 18th December 2025.
Read more about house prices in SG3.
- Sold Dec 2025£500,000 | 3 Bed House17, Sayer Way, Knebworth, SG3 6BN17, Sayer Way, Knebworth, SG3 6BN
- Sold Mar 2025£442,000 | 3 Bed House9, Wadnall Way, Knebworth, SG3 6DU9, Wadnall Way, Knebworth, SG3 6DU
- Sold Jan 2025£412,000 | 3 Bed House11, Wadnall Way, Knebworth, SG3 6DU11, Wadnall Way, Knebworth, SG3 6DU
•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 21B, Gun Lane, Knebworth as the 46th largest and the 45th most expensive of the 67 addresses on Gun Lane, Knebworth, SG3.
Against the SG3 postcode district average, it is £66k less expensive than the typical property.
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Schools Nearby
- Knebworth Primary and Nursery School300 m away
- St Michael's Woolmer Green CofE VA Primary School1.4 km away
- All Saints Church of England Voluntary Aided Primary School, Datchworth1.7 km away
- Barnwell School3.2 km away
- Marriotts School4.6 km away
- Monk's Walk School5.1 km away
More reading links
Public Transport Nearby
- Knebworth|500 m away
- Welwyn North|4.4 km away
- Stevenage|4.6 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband is available in the area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
