HM Land Registry records the plot of land for 4, Leonards Close, Welwyn as measuring 1,068 m².

That makes it the largest plot in the postcode, where all 8 other houses have recorded plot data.

4, Leonards Close, Welwyn has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 22 May 2025.

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

The most recent sale of 4, Leonards Close, Welwyn completed on 4th December 2014 at £525,000 and was recorded by HM Land Registry as a freehold house.

Since 1995 this is the property's only sale.

Values of comparable properties have risen by 41.4% over the period since December 2014.

• Sold Dec 2014£525,000

Since 2014 201 properties similar to 4, Leonards Close, Welwyn have sold within a radius of 1.5 kilometres, per the Land Registry and our network of Estate Agents.

The latest, on the 28th November 2025, was 14, Birch Grove, Welwyn, AL6 0QP, a freehold house which sold for £785,000.

Read more about house prices in AL6.

• Sold Nov 2025£785,000 | 4 Bed House14, Birch Grove, Welwyn, AL6 0QP14, Birch Grove, Welwyn, AL6 0QP
• Sold Nov 2025£747,218 | 4 Bed House4A, Heathbrow Road, Welwyn, AL6 0QG4A, Heathbrow Road, Welwyn, AL6 0QG
• Sold Jun 2025£725,000 | 4 Bed House23, Birch Grove, Welwyn, AL6 0QP23, Birch Grove, Welwyn, AL6 0QP
• Sold Jul 2024£670,000 | 4 Bed House10, Lower Mardley Hill, Welwyn, AL6 0SQ10, Lower Mardley Hill, Welwyn, AL6 0SQ
• Sold Jul 2024£810,000 | 4 Bed House24, Canonsfield, Welwyn, AL6 0QD24, Canonsfield, Welwyn, AL6 0QD
• Sold May 2024£720,000 | 4 Bed House27, Marlborough Close, Welwyn, AL6 0UG27, Marlborough Close, Welwyn, AL6 0UG
• Sold Jan 2024£700,000 | 4 Bed House3, Leonards Close, Welwyn, AL6 0QJ3, Leonards Close, Welwyn, AL6 0QJ
• Sold Sep 2023£745,000 | 4 Bed House17, The Chase, Welwyn, AL6 0QT17, The Chase, Welwyn, AL6 0QT
• Sold Mar 2023£680,000 | 4 Bed House22, Oaklea, Welwyn, AL6 0PU22, Oaklea, Welwyn, AL6 0PU
• Sold Jun 2022£830,000 | 4 Bed House5, Heathbrow Road, Welwyn, AL6 0QG5, Heathbrow Road, Welwyn, AL6 0QG
• Sold Feb 2021£575,000 | 4 Bed House8, Birch Grove, Welwyn, AL6 0QP8, Birch Grove, Welwyn, AL6 0QP
• Sold Sep 2020£685,000 | 4 Bed House2, The Chase, Welwyn, AL6 0QT2, The Chase, Welwyn, AL6 0QT
• Sold Sep 2020£545,000 | 4 Bed House9, Birch Grove, Welwyn, AL6 0QP9, Birch Grove, Welwyn, AL6 0QP
• Sold Aug 2020£681,000 | 4 Bed House18, Canonsfield, Welwyn, AL6 0QD18, Canonsfield, Welwyn, AL6 0QD
• Sold Dec 2019£627,500 | 4 Bed House25, The Chase, Welwyn, AL6 0QT25, The Chase, Welwyn, AL6 0QT
• Sold Oct 2019£695,000 | 4 Bed House16, Canonsfield, Welwyn, AL6 0QD16, Canonsfield, Welwyn, AL6 0QD
• Sold Feb 2018£625,000 | 4 Bed House14, Canonsfield, Welwyn, AL6 0QD14, Canonsfield, Welwyn, AL6 0QD
• Sold Sep 2017£735,000 | 4 Bed House1, Leonards Close, Welwyn, AL6 0QJ1, Leonards Close, Welwyn, AL6 0QJ
• Sold Jul 2017£630,000 | 4 Bed House7, Dudley Hill Close, Welwyn, AL6 0QQ7, Dudley Hill Close, Welwyn, AL6 0QQ
• Sold Aug 2014£580,000 | 4 Bed House2, Leonards Close, Welwyn, AL6 0QJ2, Leonards Close, Welwyn, AL6 0QJ

Of the 8 addresses on Leonards Close, Welwyn, AL6, 4, Leonards Close, Welwyn comes out as the 5th largest and the 4th most expensive in our analysis of the public data.

It is also £47k less expensive than the average property across the AL6 district.

• Oaklands Primary School

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

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

  2.4 km away

• Monk's Walk School

  2.9 km away
• Ridgeway Academy

  4.8 km away
• Barnwell School

  5.3 km away

• Welwyn North

  |

  2.3 km away
• Knebworth

  |

  2.6 km away
• Welwyn Garden City

  |

  4.8 km away

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