12, Mill Lane, Welwyn occupies a 55 m² plot as recorded by HM Land Registry.

Of the 19 other houses in this postcode, 18 have recorded plot sizes, and this one ranks as the 16th largest.

12, Mill Lane, Welwyn has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 10 Aug 2018.

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

12, Mill Lane, Welwyn last changed hands on 30th November 2010, selling for £272,500. The transaction was logged as a freehold house by HM Land Registry.

In total it has sold 6 times since 1995.

The market for similar properties has risen by 81.5% since November 2010.

• Sold Nov 2010£272,500
• Sold Apr 2006£249,999
• Sold Jun 2005£222,500

Land Registry records and our Estate Agent network show 72 sales of comparable properties within 1.3 kilometres of 12, Mill Lane, Welwyn since 2007.

Most recently, 48, Broomfield Road, Welwyn, AL6 9DW, a freehold house, sold at £410,409 on the 5th September 2025.

Read more about house prices in AL6.

• Sold Sep 2025£410,409 | 3 Bed House48, Broomfield Road, Welwyn, AL6 9DW48, Broomfield Road, Welwyn, AL6 9DW
• Sold Jan 2025£470,000 | 3 Bed House16, Mill Lane, Welwyn, AL6 9ET16, Mill Lane, Welwyn, AL6 9ET
• Sold Dec 2024£445,000 | 3 Bed House10, The Crescent, Welwyn, AL6 9JQ10, The Crescent, Welwyn, AL6 9JQ
• Sold Oct 2024£431,795 | 3 Bed House3, Hobbs Hill, Welwyn, AL6 9DY3, Hobbs Hill, Welwyn, AL6 9DY
• Sold Oct 2024£433,500 | 3 Bed House37, Parkside, Welwyn, AL6 9DQ37, Parkside, Welwyn, AL6 9DQ
• Sold Oct 2023£550,000 | 3 Bed House8, School Lane, Welwyn, AL6 9PH8, School Lane, Welwyn, AL6 9PH
• Sold Jul 2022£450,000 | 3 Bed House8, Church Street, Welwyn, AL6 9LX8, Church Street, Welwyn, AL6 9LX
• Sold Feb 2022£450,000 | 3 Bed House55, High Street, Welwyn, AL6 9EH55, High Street, Welwyn, AL6 9EH
• Sold Sep 2019£277,500 | 3 Bed House36, Mimram Road, Welwyn, AL6 9HA36, Mimram Road, Welwyn, AL6 9HA
• Sold Apr 2019£400,000 | 3 Bed House24, Codicote Road, Welwyn, AL6 9NQ24, Codicote Road, Welwyn, AL6 9NQ
• Sold Jul 2018£515,000 | 3 Bed HouseThe Coach House, Titmus Yard, Lockleys Drive, Welwyn, AL6 9NTThe Coach House, Titmus Yard, Lockleys Drive, Welwyn, AL6 9NT
• Sold Apr 2018£374,000 | 3 Bed House34, Mimram Road, Welwyn, AL6 9HA34, Mimram Road, Welwyn, AL6 9HA
• Sold Feb 2018£240,000 | 3 Bed House10, Church Street, Welwyn, AL6 9LX10, Church Street, Welwyn, AL6 9LX
• Sold Dec 2017£375,000 | 3 Bed House28, Mimram Road, Welwyn, AL6 9HA28, Mimram Road, Welwyn, AL6 9HA
• Sold Mar 2016£349,995 | 3 Bed House32, Mimram Road, Welwyn, AL6 9HA32, Mimram Road, Welwyn, AL6 9HA
• Sold Nov 2014£430,000 | 3 Bed House10, Mill Lane, Welwyn, AL6 9ET10, Mill Lane, Welwyn, AL6 9ET
• 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
• Sold Dec 2009£110,000 | 3 Bed House4, Mimram Road, Welwyn, AL6 9HA4, Mimram Road, Welwyn, AL6 9HA
• Sold Mar 2007£285,000 | 3 Bed House5, Mimram Walk, Welwyn, AL6 9EZ5, Mimram Walk, Welwyn, AL6 9EZ

Agents in our network have reported 1 letting within 1.3 kilometres of 12, Mill Lane, Welwyn across the last 2 years.

The newest of these is 5, Wilga Road, Welwyn, AL6 9PT, a freehold house let by Collinson Hall in November 2023.

• 
  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.

Our analysis of the public data ranks 12, Mill Lane, Welwyn as the 34th largest and the 33rd most expensive of the 47 addresses on Mill Lane, Welwyn, AL6.

Against the AL6 postcode district average, it is £303k less expensive than the typical property.

• 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

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