According to data from HM Land Registry, 23, Mardley Hill, Welwyn sits on a plot of 1,635 m².

We have plot size data on 15 out of 17 other houses in the postcode and 23, Mardley Hill, Welwyn sits on the largest plot.

According to HM Land Registry, 23, Mardley Hill, Welwyn was last sold on 5th November 1999 for £250,000 and was recorded as a freehold house.

The property has only had this single sale since 1995.

• Sold Nov 1999£250,000

According to the Land Registry and our network of Estate Agents, there have been 3 property sales within 1.2 kilometres of 23, Mardley Hill, Welwyn over the last 2 years.

The most recent example is 17, Mardley Avenue, Welwyn, AL6 0TU, a freehold house which sold for £750,000 on the 31st January 2025.

Read more about house prices in AL6.

• Sold Jan 2025£750,000 | 4 Bed House17, Mardley Avenue, Welwyn, AL6 0TU17, Mardley Avenue, Welwyn, AL6 0TU
• Sold Oct 2024£500,000 | 3 Bed House7A, Mardley Avenue, Welwyn, AL6 0TU7A, Mardley Avenue, Welwyn, AL6 0TU
• Sold Oct 2022£470,000 | 4 Bed House7, Mardley Avenue, Welwyn, AL6 0TU7, Mardley Avenue, Welwyn, AL6 0TU

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

• 500

  m

  St Michael's Woolmer Green CofE VA Primary School
• 1.0

  km

  Oaklands Primary School
• 1.9

  km

  All Saints Church of England Voluntary Aided Primary School, Datchworth

• 3.5

  km

  Monk's Walk School
• 4.8

  km

  Barnwell School
• 5.0

  km

  Ridgeway Academy

• 2.2

  km

  Knebworth
• 2.7

  km

  Welwyn North
• 4.7

  km

  Watton-at-Stone

According to recent data from Ofcom, superfast broadband is available in this area.

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