23 Mardley Avenue, Welwyn, AL6 0TU is a freehold detached property built between 1950-1966. The property offers approximately 2,099 square feet of living space. In this location, properties of similar size usually have six bedrooms.
The estimated current market value of the property is £626,325 , which equates to approximately £298 per square foot. It was last sold on 24 Mar 2000 for £195,000. Since then, the value has increased by £431,325, representing a 221.2% increase, or approximately 8.6% per year.
The current estimated value of £626,325 is:
This property has had 2 EPC inspections with recorded tenure information. It was recorded as owner-occupied both times. This suggests the property has typically been lived in by its owners, which often reflects longer-term residency and more consistent maintenance.
At the most recent EPC inspection on 12 August 2025, the property was recorded as owner-occupied.
23 Mardley Avenue, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TU has an Energy Performance Certificate (EPC) rating of C, based on the latest assessment carried out on 12 Aug 2025.
This property uses a gas-fired boiler and radiators, connected to the mains gas supply, as its main heating source. Hot water is provided from main heating system. The windows are fully double glazed.
The previous EPC assessment was conducted on 29 Apr 2014, when the property was rated D. Since then, the rating has improved to C, with the energy efficiency score increasing by 31.6%.
Since the previous assessment, several changes were observed:
Compared to other properties in AL6 0TU , this house's estimated value ranks 9th out of 11. Based on price per square foot, it ranks 8th out of 8 properties. This indicates a lower price per square foot than most, suggesting good value for the space offered. In terms of size, this home ranks 3rd out of 8 properties in its postcode area.
The property at 23 Mardley Avenue, Welwyn, Welwyn Hatfield, Hertfordshire, AL6 0TU appears once in the Land Registry records, with the transaction recorded on 24 Mar 2000. It also has two Energy Performance Certificates (EPC) entries, the earliest dating back to 12 Aug 2025. We use this data, to estimate the property's characteristics and current market value.
This website uses public sector information from:HM Land Registry Price Paid Data, and
Energy Performance of Buildings Data published by the Department for Levelling Up, Housing and Communities (DLUHC), formerly the Ministry of Housing, Communities & Local Government (MHCLG).
These datasets are licensed under the Open
Government Licence v3.0.
This website is not affiliated with or endorsed by HM Land Registry or DLUHC.