HM Land Registry records the plot of land for 42, New Close, Knebworth as measuring 550 m².

That makes it the 16th largest plot in the postcode, where 48 of the 51 other houses have recorded plot data.

42, New Close, Knebworth has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 08 Oct 2012.

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

The most recent sale of 42, New Close, Knebworth completed on 31st January 2013 at £446,500 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold twice.

Values of comparable properties have risen by 14.7% over the period since January 2013.

• Sold Jan 2013£446,500
• Sold Mar 2007£280,000

Since 2014 39 properties similar to 42, New Close, Knebworth have sold within a radius of 1.0 kilometres, per the Land Registry and our network of Estate Agents.

The latest, on the 20th August 2025, was 27, Stevenage Road, Knebworth, SG3 6NN, a freehold house which sold for £835,000.

Read more about house prices in SG3.

• Sold Aug 2025£835,000 | 5 Bed House27, Stevenage Road, Knebworth, SG3 6NN27, Stevenage Road, Knebworth, SG3 6NN
• Sold Apr 2025£660,000 | 5 Bed House6, New Close, Knebworth, SG3 6NU6, New Close, Knebworth, SG3 6NU
• Sold Sep 2024£768,500 | 5 Bed House55, Pondcroft Road, Knebworth, SG3 6DE55, Pondcroft Road, Knebworth, SG3 6DE
• Sold Apr 2024£700,000 | 4 Bed House2, Oak Tree Gardens, Knebworth, SG3 6EQ2, Oak Tree Gardens, Knebworth, SG3 6EQ
• Sold Oct 2023£630,000 | 4 Bed House2 Church Place, New Close, Knebworth, SG3 6NX2 Church Place, New Close, Knebworth, SG3 6NX
• Sold Sep 2023£685,000 | 4 Bed House3, Oak Tree Gardens, Knebworth, SG3 6EQ3, Oak Tree Gardens, Knebworth, SG3 6EQ
• Sold Sep 2023£747,000 | 5 Bed House83, Pondcroft Road, Knebworth, SG3 6DE83, Pondcroft Road, Knebworth, SG3 6DE
• Sold Aug 2023£672,000 | 4 Bed House6, Lytton Fields, Knebworth, SG3 6AZ6, Lytton Fields, Knebworth, SG3 6AZ
• Sold Jun 2023£722,000 | 5 Bed House10, Gun Lane, Knebworth, SG3 6AU10, Gun Lane, Knebworth, SG3 6AU
• Sold Mar 2023£599,000 | 4 Bed House22, Hornbeam Spring, Knebworth, SG3 6BE22, Hornbeam Spring, Knebworth, SG3 6BE
• Sold Jul 2022£595,000 | 4 Bed House48A, Pondcroft Road, Knebworth, SG3 6DE48A, Pondcroft Road, Knebworth, SG3 6DE
• Sold Jun 2021£725,000 | 4 Bed House21A, Deards Wood, Knebworth, SG3 6PG21A, Deards Wood, Knebworth, SG3 6PG
• Sold Feb 2021£690,000 | 4 Bed House6, Oak Tree Gardens, Knebworth, SG3 6EQ6, Oak Tree Gardens, Knebworth, SG3 6EQ
• Sold May 2020£640,000 | 4 Bed House48, Pondcroft Road, Knebworth, SG3 6DE48, Pondcroft Road, Knebworth, SG3 6DE
• Sold Jan 2020£548,000 | 5 Bed House16, New Close, Knebworth, SG3 6NU16, New Close, Knebworth, SG3 6NU
• Sold May 2018£917,000 | 4 Bed House9A, Deards Wood, Knebworth, SG3 6PG9A, Deards Wood, Knebworth, SG3 6PG
• Sold Aug 2017£620,000 | 4 Bed House20, Deards Wood, Knebworth, SG3 6PG20, Deards Wood, Knebworth, SG3 6PG
• Sold Mar 2017£640,000 | 4 Bed House5, Oak Tree Gardens, Knebworth, SG3 6EQ5, Oak Tree Gardens, Knebworth, SG3 6EQ
• Sold Feb 2017£650,000 | 4 Bed House9, Oak Tree Gardens, Knebworth, SG3 6EQ9, Oak Tree Gardens, Knebworth, SG3 6EQ
• Sold May 2014£550,000 | 4 Bed House9, New Close, Knebworth, SG3 6NU9, New Close, Knebworth, SG3 6NU

Of the 54 addresses on New Close, Knebworth, SG3, 42, New Close, Knebworth comes out as the 7th largest and the 7th most expensive in our analysis of the public data.

It is also £313k more expensive than the average property across the SG3 district.

• Knebworth Primary and Nursery School

  600 m away
• Shephalbury Park Primary School

  1.7 km away
• St Margaret Clitherow Roman Catholic Primary School

  1.7 km away

• Barnwell School

  2.5 km away
• Marriotts School

  3.9 km away
• The Nobel School

  4.8 km away

• Knebworth

  |

  300 m away
• Stevenage

  |

  3.9 km away
• Watton-at-Stone

  |

  4.8 km away

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