Our Data Sources
3, Swangleys Lane, Knebworth has a single entry in the Land Registry from September 2025 and a single entry in the EPC database dated September 2024.
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
In very good condition, we estimate 3, Swangleys Lane, Knebworth would be worth £702,195, with a potential rental value of £2,721 per month.
If substantial cosmetic improvements are needed, the estimated sale value falls to £621,944, with a rental value of £2,410 per month.
The extent to which decoration affects a property's value depends on its type, size and location.
Energy Efficiency
3, Swangleys Lane, Knebworth has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 06 Sep 2024.
The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).
Sold Prices
3, Swangleys Lane, Knebworth last changed hands on 16th September 2025, selling for £575,000. 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 dropped by 28.5% since September 2025.
- Sold Sep 2025£575,000
Similar Properties Sold Nearby
Land Registry records and our Estate Agent network show 70 sales of comparable properties within 970 metres of 3, Swangleys Lane, Knebworth since 2010.
Most recently, 12, Oak Tree Gardens, Knebworth, SG3 6EQ, a freehold house, sold at £700,000 on the 12th January 2026.
Read more about house prices in SG3.
- Sold Jan 2026£700,000 | 4 Bed House12, Oak Tree Gardens, Knebworth, SG3 6EQ12, Oak Tree Gardens, Knebworth, SG3 6EQ
- Sold Dec 2025£610,000 | 4 Bed House30, Pondcroft Road, Knebworth, SG3 6DB30, Pondcroft Road, Knebworth, SG3 6DB
- Sold Aug 2025£620,000 | 4 Bed House31, Gun Road Gardens, Knebworth, SG3 6ED31, Gun Road Gardens, Knebworth, SG3 6ED
- Sold Mar 2025£565,000 | 4 Bed House94, Pondcroft Road, Knebworth, SG3 6DE94, Pondcroft Road, Knebworth, SG3 6DE
- Sold Dec 2024£590,000 | 4 Bed House29, New Close, Knebworth, SG3 6NU29, New Close, Knebworth, SG3 6NU
Nearby is defined as the radius comprising the nearest 2,000 addresses.
More reading links
Explore Nearby Properties
The surrounding properties have an average estimated value of £986,487, ranging from £821,033 to £1,302,294.
- 5 Swangleys Lane
4 Bed House | 17 m | Est. Value: £826,814
- 6 Swangleys Lane
5 Bed House | 53 m | Est. Value: £1,028,082
- 9 Swangleys Lane
5 Bed House | 54 m | Est. Value: £1,041,944
- 11 Swangleys Lane
4 Bed House | 74 m | Est. Value: £821,033
- 8 Swangleys Lane
5 Bed House | 76 m | Est. Value: £1,236,765
Location Comparison
Our analysis of the public data ranks 3, Swangleys Lane, Knebworth as the 18th largest and the 18th most expensive of the 23 addresses on Swangleys Lane, Knebworth, SG3.
Against the SG3 postcode district average, it is £271k more expensive than the typical property.
More reading links
Schools Nearby
- Knebworth Primary and Nursery School200 m away
- All Saints Church of England Voluntary Aided Primary School, Datchworth1.4 km away
- St Michael's Woolmer Green CofE VA Primary School1.5 km away
- Barnwell School2.9 km away
- Marriotts School4.4 km away
- The Nobel School5.3 km away
More reading links
Public Transport Nearby
- Knebworth|600 m away
- Watton-at-Stone|4.3 km away
- Stevenage|4.5 km away
Available Internet Speeds
Ofcom's latest figures show ultrafast broadband available in this area.
According to recent data from Ofcom, Ultrafast Broadband available in this area.
Risk of Flooding
Environment Agency data suggests this area has a Very Low risk of flooding.
