According to data from HM Land Registry, 15, St. Johns Close, Welwyn sits on a plot of 854 m².

We have plot size data on 16 out of 16 other houses in the postcode and 15, St. Johns Close, Welwyn sits on the 11th largest plot.

15, St. Johns Close, Welwyn has an Energy Performance Rating (EPC) of E. This is based on the most recent assessment, dated 05 Mar 2021.

The property is connected to mains gas and has fully double glazed windows. It is heated using warm air (mains gas).

According to HM Land Registry, 15, St. Johns Close, Welwyn was last sold on 24th May 2021 for £816,000 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since May 2021, the market for similar properties has risen by 7.9%.

• Sold May 2021£816,000
• Sold Aug 2009£465,000

According to the Land Registry and our network of Estate Agents, there have been 151 sales of properties similar to 15, St. Johns Close, Welwyn within a radius of 1.3 kilometres since 2014.

The most recent example is 6, Blakes Way, Welwyn, AL6 9RE, a freehold house which sold for £782,500 on the 15th October 2025.

Read more about house prices in AL6.

• Sold Oct 2025£782,500 | 4 Bed House6, Blakes Way, Welwyn, AL6 9RE6, Blakes Way, Welwyn, AL6 9RE
• Sold Oct 2025£900,000 | 5 Bed House12, Roman Way, Welwyn, AL6 9RJ12, Roman Way, Welwyn, AL6 9RJ
• Sold Sep 2025£820,000 | 4 Bed House10, Bluebells, Welwyn, AL6 0XD10, Bluebells, Welwyn, AL6 0XD
• Sold Aug 2024£980,000 | 4 Bed House24, Carleton Rise, Welwyn, AL6 9RF24, Carleton Rise, Welwyn, AL6 9RF
• Sold Jan 2024£745,000 | 4 Bed House60, Carleton Rise, Welwyn, AL6 9RG60, Carleton Rise, Welwyn, AL6 9RG
• Sold Dec 2023£592,000 | 4 Bed House58, Carleton Rise, Welwyn, AL6 9RG58, Carleton Rise, Welwyn, AL6 9RG
• Sold Oct 2023£995,000 | 5 Bed House5, Dewars Close, Welwyn, AL6 9RR5, Dewars Close, Welwyn, AL6 9RR
• Sold Sep 2023£720,000 | 4 Bed House20, Kindersley Close, Welwyn, AL6 9RN20, Kindersley Close, Welwyn, AL6 9RN
• Sold Aug 2023£940,000 | 4 Bed House4, Hensley Close, Welwyn, AL6 9QD4, Hensley Close, Welwyn, AL6 9QD
• Sold Jul 2022£802,000 | 4 Bed House10, Carleton Rise, Welwyn, AL6 9RA10, Carleton Rise, Welwyn, AL6 9RA
• Sold Jun 2021£799,000 | 4 Bed House1, North Ride, Welwyn, AL6 9RD1, North Ride, Welwyn, AL6 9RD
• Sold Feb 2021£898,000 | 4 Bed House11A, St. Johns Close, Welwyn, AL6 9RB11A, St. Johns Close, Welwyn, AL6 9RB
• Sold Jan 2021£799,000 | 4 Bed House11, Carleton Rise, Welwyn, AL6 9RP11, Carleton Rise, Welwyn, AL6 9RP
• Sold Sep 2020£795,000 | 4 Bed House7, St. Johns Close, Welwyn, AL6 9RB7, St. Johns Close, Welwyn, AL6 9RB
• Sold Jul 2020£690,000 | 4 Bed House12, Grange Hill, Welwyn, AL6 9RW12, Grange Hill, Welwyn, AL6 9RW
• Sold Jun 2020£730,000 | 4 Bed House2, St. Johns Close, Welwyn, AL6 9RB2, St. Johns Close, Welwyn, AL6 9RB
• Sold Nov 2019£675,000 | 4 Bed House12, Carleton Rise, Welwyn, AL6 9RA12, Carleton Rise, Welwyn, AL6 9RA
• Sold Oct 2019£881,000 | 4 Bed House26, Carleton Rise, Welwyn, AL6 9RF26, Carleton Rise, Welwyn, AL6 9RF
• Sold Jul 2017£830,000 | 4 Bed House17, Blakes Way, Welwyn, AL6 9RE17, Blakes Way, Welwyn, AL6 9RE
• Sold Jul 2014£575,000 | 4 Bed House4, Roman Way, Welwyn, AL6 9RJ4, Roman Way, Welwyn, AL6 9RJ

Our network of Estate Agents reports 1 let within 1.3 kilometres of 15, St. Johns Close, Welwyn over the last 2 years.

Most recently, 5, Wilga Road, Welwyn, AL6 9PT, a freehold house, was 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.

St. Johns Close, Welwyn, AL6 has a total of 16 addresses. According to our analysis of all the public data, 15, St. Johns Close, Welwyn is the 3rd largest and the 3rd most expensive property on the street.

When compared to the postcode district it is £101k more expensive than the average property in AL6.

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

  1.1 km away
• Oaklands Primary School

  1.2 km away
• Homerswood Primary and Nursery School

  2.1 km away

• Monk's Walk School

  1.7 km away
• Ridgeway Academy

  4.3 km away
• Stanborough School

  5.0 km away

• Welwyn North

  |

  1.8 km away
• Welwyn Garden City

  |

  3.8 km away
• Knebworth

  |

  3.9 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.