21, Hornbeam Spring, Knebworth has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 24 May 2022.

The property is connected to mains gas and has fully double glazed windows. It is heated using a boiler and radiators (mains gas).

Since 2014 117 properties similar to 21, Hornbeam Spring, Knebworth have sold within a radius of 920 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 2nd April 2026, was 20, Sayer Way, Knebworth, SG3 6BN, a freehold house which sold for £525,000.

Read more about house prices in SG3.

• Sold Apr 2026£525,000 | 3 Bed House20, Sayer Way, Knebworth, SG3 6BN20, Sayer Way, Knebworth, SG3 6BN
• Sold Dec 2025£500,000 | 3 Bed House17, Sayer Way, Knebworth, SG3 6BN17, Sayer Way, Knebworth, SG3 6BN
• Sold Nov 2025£520,000 | 3 Bed House6, Deepings Close, Knebworth, SG3 6BW6, Deepings Close, Knebworth, SG3 6BW
• Sold Sep 2025£430,000 | 3 Bed House7, Meadway, Knebworth, SG3 6DN7, Meadway, Knebworth, SG3 6DN
• Sold Aug 2025£565,000 | 4 Bed House21A, Gun Lane, Knebworth, SG3 6BJ21A, Gun Lane, Knebworth, SG3 6BJ
• Sold Apr 2025£485,000 | 3 Bed House16, Stockens Dell, Knebworth, SG3 6BG16, Stockens Dell, Knebworth, SG3 6BG
• Sold Oct 2024£550,000 | 3 Bed House40, Hornbeam Spring, Knebworth, SG3 6BE40, Hornbeam Spring, Knebworth, SG3 6BE
• Sold Aug 2024£540,000 | 3 Bed House25, Sayer Way, Knebworth, SG3 6BN25, Sayer Way, Knebworth, SG3 6BN
• Sold Aug 2024£460,000 | 3 Bed House14, Sayer Way, Knebworth, SG3 6BN14, Sayer Way, Knebworth, SG3 6BN
• Sold Jun 2024£440,000 | 3 Bed House36, Stockens Dell, Knebworth, SG3 6BG36, Stockens Dell, Knebworth, SG3 6BG
• Sold Jun 2023£500,000 | 3 Bed House25, Hornbeam Spring, Knebworth, SG3 6BE25, Hornbeam Spring, Knebworth, SG3 6BE
• Sold Nov 2022£500,000 | 3 Bed House27, Sayer Way, Knebworth, SG3 6BN27, Sayer Way, Knebworth, SG3 6BN
• Sold May 2022£580,000 | 3 Bed House70A, Pondcroft Road, Knebworth, SG3 6DE70A, Pondcroft Road, Knebworth, SG3 6DE
• Sold Sep 2021£505,000 | 3 Bed House32, Stockens Dell, Knebworth, SG3 6BG32, Stockens Dell, Knebworth, SG3 6BG
• Sold Feb 2020£425,000 | 3 Bed House4, Stockens Dell, Knebworth, SG3 6BG4, Stockens Dell, Knebworth, SG3 6BG
• Sold Nov 2019£365,000 | 3 Bed House48, Hornbeam Spring, Knebworth, SG3 6BE48, Hornbeam Spring, Knebworth, SG3 6BE
• Sold Jun 2017£445,000 | 3 Bed House28, Stockens Dell, Knebworth, SG3 6BG28, Stockens Dell, Knebworth, SG3 6BG
• Sold Jan 2017£402,200 | 3 Bed House14, Stockens Dell, Knebworth, SG3 6BG14, Stockens Dell, Knebworth, SG3 6BG
• Sold Dec 2016£425,000 | 3 Bed House34, Hornbeam Spring, Knebworth, SG3 6BE34, Hornbeam Spring, Knebworth, SG3 6BE
• Sold Sep 2014£330,000 | 3 Bed House34, Stockens Dell, Knebworth, SG3 6BG34, Stockens Dell, Knebworth, SG3 6BG

Of the 50 addresses on Hornbeam Spring, Knebworth, SG3, 21, Hornbeam Spring, Knebworth comes out as the 15th largest and the 15th most expensive in our analysis of the public data.

It is also £83k more expensive than the average property across the SG3 district.

• Knebworth Primary and Nursery School

  400 m away
• St Michael's Woolmer Green CofE VA Primary School

  1.5 km away
• All Saints Church of England Voluntary Aided Primary School, Datchworth

  1.9 km away

• Barnwell School

  3.1 km away
• Marriotts School

  4.5 km away
• Monk's Walk School

  5.1 km away

• Knebworth

  |

  400 m away
• Stevenage

  |

  4.4 km away
• Welwyn North

  |

  4.5 km away

The flood risk here is rated Very Low, based on Environment Agency data.