White Cottage, 68 Lyford Road, Wandsworth, London

Pevsner's London 2: South (with Bridget Cherry, 1983) says:

The most interesting is No 68 [Lyford Road], (The White Cottage), a minor work of 1903 by Voysey. Its special feature is the projecting centre rising to a third-storey belvedere. (Inside, a large central hall with staircase, original fireplace and fittings).

Image by John Trotter.