21D, Canonsfield, Welwyn occupies a 690 m² plot as recorded by HM Land Registry.

Of the 15 other houses in this postcode, 11 have recorded plot sizes, and this one ranks as the 7th largest.

21D, Canonsfield, Welwyn has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 01 Jun 2016.

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

21D, Canonsfield, Welwyn last changed hands on 25th June 2021, selling for £915,000. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold twice since 1995.

The market for similar properties has risen by 31.4% since June 2021.

• Sold Jun 2021£915,000
• Sold Feb 2003£585,000

Land Registry records and our Estate Agent network show 112 sales of comparable properties within 1.4 kilometres of 21D, Canonsfield, Welwyn since 2016.

Most recently, 15, The Chase, Welwyn, AL6 0QT, a freehold house, sold at £630,000 on the 8th June 2026.

Read more about house prices in AL6.

• Sold Jun 2026£630,000 | 5 Bed House15, The Chase, Welwyn, AL6 0QT15, The Chase, Welwyn, AL6 0QT
• Sold Mar 2026£1,200,000 | 5 Bed House12, The Drive, Welwyn, AL6 0TR12, The Drive, Welwyn, AL6 0TR
• Sold Jan 2026£1,150,000 | 5 Bed House15, Marlborough Close, Welwyn, AL6 0UG15, Marlborough Close, Welwyn, AL6 0UG
• Sold Oct 2025£1,015,000 | 4 Bed House28, The Avenue, Welwyn, AL6 0PP28, The Avenue, Welwyn, AL6 0PP
• Sold Mar 2025£950,000 | 5 Bed HouseChestnut Lodge, Chestnut Walk, Welwyn, AL6 0SBChestnut Lodge, Chestnut Walk, Welwyn, AL6 0SB
• Sold May 2024£885,000 | 5 Bed House5, Pine Crest, Welwyn, AL6 0EQ5, Pine Crest, Welwyn, AL6 0EQ
• Sold Oct 2022£975,000 | 4 Bed House7, Pine Crest, Welwyn, AL6 0EQ7, Pine Crest, Welwyn, AL6 0EQ
• Sold Oct 2022£975,000 | 5 Bed House3, Pine Crest, Welwyn, AL6 0EQ3, Pine Crest, Welwyn, AL6 0EQ
• Sold Sep 2021£1,150,000 | 5 Bed House22, Bracken Lane, Welwyn, AL6 0RB22, Bracken Lane, Welwyn, AL6 0RB
• Sold Sep 2021£935,000 | 5 Bed House17, Woodland Way, Welwyn, AL6 0RZ17, Woodland Way, Welwyn, AL6 0RZ
• Sold Mar 2021£875,000 | 5 Bed House1B, Firway, Welwyn, AL6 0RD1B, Firway, Welwyn, AL6 0RD
• Sold Dec 2020£930,000 | 5 Bed House4, Marlborough Close, Welwyn, AL6 0UG4, Marlborough Close, Welwyn, AL6 0UG
• Sold Jan 2020£925,000 | 5 Bed House19A, Briary Wood Lane, Welwyn, AL6 0TE19A, Briary Wood Lane, Welwyn, AL6 0TE
• Sold Oct 2019£911,500 | 5 Bed House19, Briary Wood Lane, Welwyn, AL6 0TE19, Briary Wood Lane, Welwyn, AL6 0TE
• Sold Oct 2018£652,500 | 5 Bed House67, Robbery Bottom Lane, Welwyn, AL6 0UL67, Robbery Bottom Lane, Welwyn, AL6 0UL
• Sold Dec 2017£885,000 | 5 Bed HouseBirch Cottage, Woodland Way, Welwyn, AL6 0RZBirch Cottage, Woodland Way, Welwyn, AL6 0RZ
• Sold Oct 2017£825,000 | 5 Bed House16A, Briary Wood Lane, Welwyn, AL6 0TF16A, Briary Wood Lane, Welwyn, AL6 0TF
• Sold Sep 2017£875,000 | 5 Bed House8B, Heathbrow Road, Welwyn, AL6 0QG8B, Heathbrow Road, Welwyn, AL6 0QG
• Sold Aug 2017£860,000 | 5 Bed HouseHawthorn Cottage, Woodland Way, Welwyn, AL6 0RZHawthorn Cottage, Woodland Way, Welwyn, AL6 0RZ
• Sold Feb 2016£900,000 | 5 Bed House1, Heathbrow Road, Welwyn, AL6 0QG1, Heathbrow Road, Welwyn, AL6 0QG

Our analysis of the public data ranks 21D, Canonsfield, Welwyn as the 10th largest and the 13th most expensive of the 30 addresses on Canonsfield, Welwyn, AL6.

Against the AL6 postcode district average, it is £206k more expensive than the typical property.

• Oaklands Primary School

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

  1.1 km away
• Knebworth Primary and Nursery School

  2.3 km away

• Monk's Walk School

  3.0 km away
• Ridgeway Academy

  4.9 km away
• Barnwell School

  5.2 km away

• Welwyn North

  |

  2.4 km away
• Knebworth

  |

  2.5 km away
• Welwyn Garden City

  |

  4.9 km away

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