20 William Road, Guildford, GU1 4QZ is a freehold semi-detached property built before 1900. The property offers approximately 1,539 square feet of living space. In this location, properties of similar size usually have five bedrooms.
The estimated current market value of the property is £810,493 , which equates to approximately £527 per square foot. It was last sold on 15 Feb 2017 for £665,000. Since then, the value has increased by £145,493, representing a 21.9% increase, or approximately 2.3% per year.
The current estimated value of £810,493 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 25 September 2025, the property was recorded as owner-occupied.
20 William Road, Guildford, Surrey, GU1 4QZ has an Energy Performance Certificate (EPC) rating of D, based on the latest assessment carried out on 25 Sep 2025.
This property uses a mains gas boiler with both radiators and underfloor heating 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 14 Aug 2012, when the property was rated E. Since then, the rating has improved to D, with the energy efficiency score increasing by 18.9%.
Since the previous assessment, several changes were observed:
* Results are based on Environment Agency flood risk mapping for the property UPRN where available. They are indicative and should not be treated as a site-specific flood survey.
This property has medium flood risk from rivers and the sea.
River and sea flooding includes flooding caused by overflowing rivers, estuaries, tidal waters and coastal surges.
This property has low surface water flood risk.
Surface water flooding can happen when heavy rainfall overwhelms drains, roads, gardens or other hard surfaces.
The property at 20 William Road, Guildford, GU1 4QZ appears four times in HM Land Registry records, with the latest transaction recorded on 15 Feb 2017. It also has two Energy Performance Certificate (EPC) records, the earliest dating back to 25 Sep 2025. We use this information to estimate the property's characteristics, flood risk profile and current market value.
This website uses public sector information from:
HM Land Registry Price Paid Data
Energy Performance of Buildings Data published by the Department for Energy Security and Net Zero (DESNZ) and the Ministry of Housing, Communities and Local Government (MHCLG).
Flood risk data supplied by the Environment Agency through the Department for Environment, Food & Rural Affairs (Defra) Data Services Platform.
These datasets are licensed under the Open Government Licence v3.0 .
StreetScan.co.uk is not affiliated with, endorsed by, or associated with HM Land Registry, DESNZ, MHCLG, Defra or the Environment Agency.