HM Land Registry records the plot of land for 20, Mill Lane, Welwyn as measuring 121 m².

That makes it the 7th largest plot in the postcode, where 18 of the 19 other houses have recorded plot data.

20, Mill Lane, Welwyn has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 25 Nov 2009.

The property is connected to mains gas and has some secondary glazing. It is heated using a boiler and radiators (mains gas).

The most recent sale of 20, Mill Lane, Welwyn completed on 13th August 2010 at £415,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 the property has sold 3 times.

Values of comparable properties have risen by 82.5% over the period since August 2010.

• Sold Aug 2010£415,000
• Sold Feb 2004£325,000
• Sold Mar 1998£188,450

Since 2012 86 properties similar to 20, Mill Lane, Welwyn have sold within a radius of 1.3 kilometres, per the Land Registry and our network of Estate Agents.

The latest, on the 31st March 2026, was 32, Welwyn Hall Gardens, Welwyn, AL6 9LF, a freehold house which sold for £620,000.

Read more about house prices in AL6.

• Sold Mar 2026£620,000 | 3 Bed House32, Welwyn Hall Gardens, Welwyn, AL6 9LF32, Welwyn Hall Gardens, Welwyn, AL6 9LF
• Sold Mar 2026£620,000 | 3 Bed House19, Welwyn Hall Gardens, Welwyn, AL6 9LF19, Welwyn Hall Gardens, Welwyn, AL6 9LF
• Sold Oct 2025£602,000 | 3 Bed House24, Welwyn Hall Gardens, Welwyn, AL6 9LF24, Welwyn Hall Gardens, Welwyn, AL6 9LF
• Sold Mar 2025£568,500 | 3 Bed House7, Dicket Mead, Welwyn, AL6 9NX7, Dicket Mead, Welwyn, AL6 9NX
• Sold Dec 2024£650,000 | 3 Bed House23, Mill Lane, Welwyn, AL6 9EU23, Mill Lane, Welwyn, AL6 9EU
• Sold Oct 2024£575,000 | 3 Bed House5, Dicket Mead, Welwyn, AL6 9NX5, Dicket Mead, Welwyn, AL6 9NX
• Sold Feb 2024£580,000 | 3 Bed House26, Glebe Road, Welwyn, AL6 9PB26, Glebe Road, Welwyn, AL6 9PB
• Sold Aug 2023£660,000 | 3 Bed House37, Welwyn Hall Gardens, Welwyn, AL6 9LF37, Welwyn Hall Gardens, Welwyn, AL6 9LF
• Sold Jul 2022£475,000 | 3 Bed House53, High Street, Welwyn, AL6 9EH53, High Street, Welwyn, AL6 9EH
• Sold Apr 2021£389,000 | 3 Bed House10, London Road, Welwyn, AL6 9EL10, London Road, Welwyn, AL6 9EL
• Sold Feb 2021£570,000 | 3 Bed House15, Dicket Mead, Welwyn, AL6 9NX15, Dicket Mead, Welwyn, AL6 9NX
• Sold Dec 2020£555,000 | 3 Bed House33, Glebe Road, Welwyn, AL6 9PB33, Glebe Road, Welwyn, AL6 9PB
• Sold Jan 2019£420,000 | 3 Bed House32, Mill Lane, Welwyn, AL6 9ET32, Mill Lane, Welwyn, AL6 9ET
• Sold Dec 2018£555,000 | 3 Bed House20, Welwyn Hall Gardens, Welwyn, AL6 9LF20, Welwyn Hall Gardens, Welwyn, AL6 9LF
• Sold Mar 2016£412,500 | 3 Bed House10, Dicket Mead, Welwyn, AL6 9NX10, Dicket Mead, Welwyn, AL6 9NX
• Sold Oct 2013£415,000 | 3 Bed House25, Welwyn Hall Gardens, Welwyn, AL6 9LF25, Welwyn Hall Gardens, Welwyn, AL6 9LF
• Sold Dec 2012£345,000 | 3 Bed House2, Mimram Walk, Welwyn, AL6 9EZ2, Mimram Walk, Welwyn, AL6 9EZ
• Sold Nov 2012£195,000 | 3 Bed House12, Church Street, Welwyn, AL6 9LX12, Church Street, Welwyn, AL6 9LX
• Sold Oct 2012£337,500 | 3 Bed House3, Mimram Road, Welwyn, AL6 9HA3, Mimram Road, Welwyn, AL6 9HA
• Sold Jan 2012£309,000 | 3 Bed House8, Mill Lane, Welwyn, AL6 9ET8, Mill Lane, Welwyn, AL6 9ET

Over the past 2 years our Estate Agent network has recorded 1 let of a property comparable to 20, Mill Lane, Welwyn, all within 1.3 kilometres.

The latest, in November 2023, was 5, Wilga Road, Welwyn, AL6 9PT, a freehold house let by Collinson Hall.

• 
  Let agreed Nov 2023£ Undisclosed | 3 Bed House5, Wilga Road, Welwyn, AL6 9PT5, Wilga Road, Welwyn, AL6 9PT

•Nearby is defined as the radius comprising the nearest 2,000 addresses.

Of the 47 addresses on Mill Lane, Welwyn, AL6, 20, Mill Lane, Welwyn comes out as the 25th largest and the 22nd most expensive in our analysis of the public data.

It is also £224k less expensive than the average property across the AL6 district.

• Welwyn St Mary's Church of England Voluntary Aided Primary School

  500 m away
• Oaklands Primary School

  1.6 km away
• Homerswood Primary and Nursery School

  1.7 km away

• Monk's Walk School

  1.2 km away
• Ridgeway Academy

  4.0 km away
• Stanborough School

  4.5 km away

• Welwyn North

  |

  1.7 km away
• Welwyn Garden City

  |

  3.4 km away
• Knebworth

  |

  4.4 km away

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