21, Dunnock Close, Knebworth has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 09 Jan 2025.

The property is not connected to mains gas and has high performance glazing. It is heated using a boiler and radiators (mains gas).

21, Dunnock Close, Knebworth last changed hands on 29th August 2025, selling for £525,000. 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 0.1% since August 2025.

• Sold Aug 2025£525,000

Land Registry records and our Estate Agent network show 41 sales of comparable properties within 840 metres of 21, Dunnock Close, Knebworth since 2008.

Most recently, 11, Berkeley Close, Stevenage, SG2 8SG, a freehold house, sold at £595,000 on the 4th February 2026.

Read more about house prices in SG3.

• Sold Feb 2026£595,000 | 4 Bed House11, Berkeley Close, Stevenage, SG2 8SG11, Berkeley Close, Stevenage, SG2 8SG
• Sold Jun 2025£540,000 | 4 Bed House20, Dunnock Close, Knebworth, SG3 6FR20, Dunnock Close, Knebworth, SG3 6FR
• Sold Jun 2025£502,000 | 4 Bed House80, Dunnock Close, Knebworth, SG3 6FR80, Dunnock Close, Knebworth, SG3 6FR
• Sold Jun 2025£510,000 | 4 Bed House78, Dunnock Close, Knebworth, SG3 6FR78, Dunnock Close, Knebworth, SG3 6FR
• Sold May 2025£520,000 | 4 Bed House81, Dunnock Close, Knebworth, SG3 6FR81, Dunnock Close, Knebworth, SG3 6FR
• Sold May 2025£535,000 | 4 Bed House84, Dunnock Close, Knebworth, SG3 6FR84, Dunnock Close, Knebworth, SG3 6FR
• Sold May 2025£510,000 | 4 Bed House19, Dunnock Close, Knebworth, SG3 6FR19, Dunnock Close, Knebworth, SG3 6FR
• Sold Apr 2025£525,000 | 4 Bed House83, Dunnock Close, Knebworth, SG3 6FR83, Dunnock Close, Knebworth, SG3 6FR
• Sold Apr 2025£535,000 | 4 Bed House79, Dunnock Close, Knebworth, SG3 6FR79, Dunnock Close, Knebworth, SG3 6FR
• Sold Mar 2025£515,000 | 4 Bed House18, Dunnock Close, Knebworth, SG3 6FR18, Dunnock Close, Knebworth, SG3 6FR
• Sold Mar 2025£550,000 | 4 Bed House14, Dunnock Close, Knebworth, SG3 6FR14, Dunnock Close, Knebworth, SG3 6FR
• Sold Mar 2025£561,500 | 4 Bed House15, Grenville Way, Stevenage, SG2 8XZ15, Grenville Way, Stevenage, SG2 8XZ
• Sold Mar 2025£540,000 | 4 Bed House15, Dunnock Close, Knebworth, SG3 6FR15, Dunnock Close, Knebworth, SG3 6FR
• Sold Dec 2024£575,000 | 4 Bed House17, Dunnock Close, Knebworth, SG3 6FR17, Dunnock Close, Knebworth, SG3 6FR
• Sold Dec 2024£535,000 | 4 Bed House82, Dunnock Close, Knebworth, SG3 6FR82, Dunnock Close, Knebworth, SG3 6FR
• Sold Oct 2023£625,000 | 4 Bed House59, Grenville Way, Stevenage, SG2 8XZ59, Grenville Way, Stevenage, SG2 8XZ
• Sold Oct 2022£665,000 | 4 Bed House1, Grenville Way, Stevenage, SG2 8XZ1, Grenville Way, Stevenage, SG2 8XZ
• Sold Oct 2021£580,000 | 4 Bed House52, Grenville Way, Stevenage, SG2 8XZ52, Grenville Way, Stevenage, SG2 8XZ
• Sold Feb 2021£625,000 | 4 Bed House17, Grenville Way, Stevenage, SG2 8XZ17, Grenville Way, Stevenage, SG2 8XZ
• Sold Feb 2008£235,000 | 5 Bed House22, Knebworth Gate, Stevenage, SG2 8DF22, Knebworth Gate, Stevenage, SG2 8DF

Our analysis of the public data ranks 21, Dunnock Close, Knebworth as the 6th largest and the 6th most expensive of the 86 addresses on Dunnock Close, Knebworth, SG3.

Against the SG3 postcode district average, it is £21k more expensive than the typical property.

• St Margaret Clitherow Roman Catholic Primary School

  300 m away
• Roebuck Academy

  700 m away
• Shephalbury Park Primary School

  1.1 km away

• Barnwell School

  1.6 km away
• Marriotts School

  2.7 km away
• The Nobel School

  3.7 km away

• Knebworth

  |

  1.6 km away
• Stevenage

  |

  2.5 km away
• Watton-at-Stone

  |

  5.7 km away

Environment Agency data suggests this area has a Very Low risk of flooding.