20, Adele Avenue, Welwyn has an Energy Performance Rating (EPC) of C. This is based on the most recent assessment, dated 10 Oct 2008.

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

Land Registry records and our Estate Agent network show 790 sales within 1.2 kilometres of 20, Adele Avenue, Welwyn since 2007.

Most recently, 26, Harmer Green Lane, Welwyn, AL6 0AT, a freehold house, sold at £720,000 on the 20th August 2025.

Read more about house prices in AL6.

• Sold Aug 2025£720,000 | 4 Bed House26, Harmer Green Lane, Welwyn, AL6 0AT26, Harmer Green Lane, Welwyn, AL6 0AT
• Sold Oct 2024£760,464 | 3 Bed House14, Harmer Green Lane, Welwyn, AL6 0AX14, Harmer Green Lane, Welwyn, AL6 0AX
• Sold Oct 2024£490,000 | 3 Bed House19, Honeymead, Welwyn, AL6 0EG19, Honeymead, Welwyn, AL6 0EG
• Sold Sep 2024£365,000 | 2 Bed Flat2C, Adele Avenue, Welwyn, AL6 0AU2C, Adele Avenue, Welwyn, AL6 0AU
• Sold Oct 2022£800,000 | 3 Bed House10, Harmer Green Lane, Welwyn, AL6 0AX10, Harmer Green Lane, Welwyn, AL6 0AX
• Sold Feb 2022£860,000 | 4 Bed House11, New Road, Welwyn, AL6 0AE11, New Road, Welwyn, AL6 0AE
• Sold Sep 2021£490,000 | 3 Bed House16, Harmer Green Lane, Welwyn, AL6 0AX16, Harmer Green Lane, Welwyn, AL6 0AX
• Sold Aug 2021£1,000,000 | 4 Bed House13, New Road, Welwyn, AL6 0AE13, New Road, Welwyn, AL6 0AE
• Sold Apr 2021£337,500 | 2 Bed Flat2A, Adele Avenue, Welwyn, AL6 0AU2A, Adele Avenue, Welwyn, AL6 0AU
• Sold Dec 2020£475,000 | 3 Bed House18, Harmer Green Lane, Welwyn, AL6 0AX18, Harmer Green Lane, Welwyn, AL6 0AX
• Sold Mar 2019£775,000 | 4 Bed House21, Harmer Green Lane, Welwyn, AL6 0AS21, Harmer Green Lane, Welwyn, AL6 0AS
• Sold Dec 2016£900,000 | 4 Bed House3, Adele Avenue, Welwyn, AL6 0AU3, Adele Avenue, Welwyn, AL6 0AU
• Sold Jul 2016£375,000 | 2 Bed Flat8, Adele Avenue, Welwyn, AL6 0AU8, Adele Avenue, Welwyn, AL6 0AU
• Sold Aug 2015£385,000 | 3 Bed House4, Adele Avenue, Welwyn, AL6 0AU4, Adele Avenue, Welwyn, AL6 0AU
• Sold Jun 2014£580,000 | 4 Bed House19, New Road, Welwyn, AL6 0AE19, New Road, Welwyn, AL6 0AE
• Sold Mar 2014£296,000 | 3 Bed House20, Honeymead, Welwyn, AL6 0EG20, Honeymead, Welwyn, AL6 0EG
• Sold Nov 2011£480,000 | 3 Bed House12, Harmer Green Lane, Welwyn, AL6 0AX12, Harmer Green Lane, Welwyn, AL6 0AX
• Sold Jun 2011£667,500 | 4 Bed House1A, Adele Avenue, Welwyn, AL6 0AU1A, Adele Avenue, Welwyn, AL6 0AU
• Sold Aug 2007£190,000 | 2 Bed Flat10, Adele Avenue, Welwyn, AL6 0AU10, Adele Avenue, Welwyn, AL6 0AU
• Sold Jan 2007£721,000 | 5 Bed House15, New Road, Welwyn, AL6 0AE15, New Road, Welwyn, AL6 0AE

Our analysis of the public data ranks 20, Adele Avenue, Welwyn as the 16th largest and the 4th most expensive of the 16 addresses on Adele Avenue, Welwyn, AL6.

Against the AL6 postcode district average, it is £158k less expensive than the typical property.

• St John's CofE Primary School

  500 m away
• Harwood Hill Junior Mixed Infant and Nursery School

  1.0 km away
• Homerswood Primary and Nursery School

  1.1 km away

• Monk's Walk School

  1.4 km away
• Ridgeway Academy

  2.5 km away
• Stanborough School

  4.1 km away

• Welwyn North

  |

  100 m away
• Welwyn Garden City

  |

  2.6 km away
• Knebworth

  |

  4.9 km away

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