26, Constance Place, Knebworth has an Energy Performance Rating (EPC) of B. This is based on the most recent assessment, dated 13 Jun 2016.

The property is not connected to mains gas and has high performance glazing. It is heated using air source heat pump (underfloor, electric).

The most recent sale of 26, Constance Place, Knebworth completed on 26th August 2016 at £435,950 and was recorded by HM Land Registry as a leasehold flat.

Since 1995 this is the property's only sale.

Values of comparable properties have dropped by 11.1% over the period since August 2016.

• Sold Aug 2016£435,950

Since 2016 46 properties similar to 26, Constance Place, Knebworth have sold within a radius of 920 metres, per the Land Registry and our network of Estate Agents.

The latest, on the 17th December 2025, was 9, Lowe House, Knebworth, SG3 6EU, a leasehold flat which sold for £333,000.

Read more about house prices in SG3.

• Sold Dec 2025£333,000 | 3 Bed Flat9, Lowe House, Knebworth, SG3 6EU9, Lowe House, Knebworth, SG3 6EU
• Sold Jul 2025£300,000 | 3 Bed FlatApartment 18, Robert Ellis Court, St. Martins Road, Knebworth, SG3 6ELApartment 18, Robert Ellis Court, St. Martins Road, Knebworth, SG3 6EL
• Sold Jul 2025£315,000 | 2 Bed Flat10, Constance Place, Knebworth, SG3 6EE10, Constance Place, Knebworth, SG3 6EE
• Sold Dec 2024£380,000 | 3 Bed Flat40, Lowe House, Knebworth, SG3 6EU40, Lowe House, Knebworth, SG3 6EU
• Sold Aug 2024£448,500 | 3 Bed Flat47, Lowe House, Knebworth, SG3 6EU47, Lowe House, Knebworth, SG3 6EU
• Sold Jul 2024£485,000 | 3 Bed Flat21, Constance Place, Knebworth, SG3 6EE21, Constance Place, Knebworth, SG3 6EE
• Sold Jun 2024£460,500 | 3 Bed Flat38, Lowe House, Knebworth, SG3 6EU38, Lowe House, Knebworth, SG3 6EU
• Sold Jun 2024£450,000 | 3 Bed Flat5, Constance Place, Knebworth, SG3 6EE5, Constance Place, Knebworth, SG3 6EE
• Sold Apr 2024£380,000 | 3 Bed Flat19, Lowe House, Knebworth, SG3 6EU19, Lowe House, Knebworth, SG3 6EU
• Sold Apr 2024£420,000 | 3 Bed Flat3, Lowe House, Knebworth, SG3 6EU3, Lowe House, Knebworth, SG3 6EU
• Sold Nov 2023£427,900 | 3 Bed Flat22, Lowe House, Knebworth, SG3 6EU22, Lowe House, Knebworth, SG3 6EU
• Sold Oct 2023£450,000 | 3 Bed Flat45, Lowe House, Knebworth, SG3 6EU45, Lowe House, Knebworth, SG3 6EU
• Sold Nov 2022£497,000 | 3 Bed Flat29, Lowe House, Knebworth, SG3 6EU29, Lowe House, Knebworth, SG3 6EU
• Sold Nov 2022£465,000 | 3 Bed Flat20, Constance Place, Knebworth, SG3 6EE20, Constance Place, Knebworth, SG3 6EE
• Sold Feb 2021£385,000 | 3 Bed Flat12, Constance Place, Knebworth, SG3 6EE12, Constance Place, Knebworth, SG3 6EE
• Sold Aug 2020£407,500 | 3 Bed Flat3, Constance Place, Knebworth, SG3 6EE3, Constance Place, Knebworth, SG3 6EE
• Sold Aug 2016£399,950 | 3 Bed Flat15, Constance Place, Knebworth, SG3 6EE15, Constance Place, Knebworth, SG3 6EE
• Sold Aug 2016£399,950 | 3 Bed Flat6, Constance Place, Knebworth, SG3 6EE6, Constance Place, Knebworth, SG3 6EE
• Sold Aug 2016£424,950 | 3 Bed Flat25, Constance Place, Knebworth, SG3 6EE25, Constance Place, Knebworth, SG3 6EE
• Sold May 2016£430,713 | 3 Bed Flat16, Constance Place, Knebworth, SG3 6EE16, Constance Place, Knebworth, SG3 6EE

Of the 26 addresses on Constance Place, Knebworth, SG3, 26, Constance Place, Knebworth comes out as the 7th largest and the 7th most expensive in our analysis of the public data.

It is also £149k less expensive than the average property across the SG3 district.

• Knebworth Primary and Nursery School

  100 m away
• All Saints Church of England Voluntary Aided Primary School, Datchworth

  1.5 km away
• St Michael's Woolmer Green CofE VA Primary School

  1.5 km away

• Barnwell School

  2.9 km away
• Marriotts School

  4.4 km away
• Monk's Walk School

  5.3 km away

• Knebworth

  |

  500 m away
• Watton-at-Stone

  |

  4.4 km away
• Stevenage

  |

  4.5 km away

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