20 Guildown Road, Guildford, GU2 4EN

20 Guildown Road is a six-bedroom detached house in Guildford (GU2 4EN). It has a recorded floor area of 343 m² (around 3692 sq ft) and construction records dating it to before 1900. The latest certificate (April 2025) shows an E (score 43), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since June 2009. Between certificates, lighting went from Average to Very Good; while roof efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Good. The recommended improvements would lift it to C (score 74), a 2-band jump. Other recorded features include a balcony and outbuildings. Period features are noted in the property record. The home occupies a cul-de-sac position.

Untraded for 17 years, with the last transfer in December 2009. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. At 343 m² the property is well over the postcode median (102 m² across 14 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 71% of similar EPCs). 6 bedrooms is on the larger side for this postcode, where 4 is the typical count. Across 2003–2009, sale prices on this property compounded at 6.2% per year. Today's modelled estimate of £2,875,000 sits 56.5% above the 2009 sale of £1,837,500. On a £-per-square-foot basis, the last sale (£498/sq ft) was about 41.5% above the typical sold price in the postcode. 11 planning records sit against the property, 10 approved, 1 refused. Past consents include an extension, a basement excavation, solar panel installation and tree works, meaningful when judging how the property has evolved. The record references conservation-area consent, which constrain future alterations.