If your home has sliding sash windows, compare replacements that retain the proportions and glazing pattern. The main options are uPVC, timber and premium aluminium. For older Oxted properties, check whether original windows should be repaired and whether replacement needs consent.
For a suitable unrestricted Oxted house, a white uPVC vertical sliding sash at 900 x 1800mm is £1,505 to £2,190 supplied and fitted including VAT. A heritage-colour or woodgrain version at the same size is £1,775 to £2,575 including VAT. These ranges provide a useful comparison before committing to painted timber, particularly where a whole Oxted elevation needs consistent replacements.
A timber box sash at 900 x 1800mm is £2,650 to £3,800 supplied and fitted including VAT. Timber may be the appropriate specification where a listed Oxted building or a planning decision requires it. For an unrestricted opening, the white uPVC vertical slider offers a substantially lower range, roughly half the timber cost at the lower end. Painted timber also needs repainting every five to eight years, sooner where an elevation is exposed.
Aluminium heritage sash is a premium choice for suitable Oxted openings. At 900 x 1800mm, the supplied-and-fitted range is £2,710 to £4,305 including VAT. It should not be presented as a budget substitute for timber. Its frame detail, finish and compatibility with the building need to justify that separate specification. For a tall heritage or conservation sash with slim units and true bars, the 1100 x 2400mm range is £4,700 to £7,900 including VAT.
In Old Oxted, begin with the exact address and any listing or direction before selecting from those options. Station Road West has another distinct conservation-area character, so its Tudor revival details should not be treated as interchangeable with an older sash frontage. Photographs of neighbouring windows can help explain the street rhythm, but they do not establish permission. The Oxted survey should record the existing opening, how the sash operates, the glazing pattern and any work needed to the sill or surrounding fabric before a quotation is agreed.