Costs & contacts

Building & decorating £50,000 (excluding materials)

Materials & glazing £25,000 Kitchen & appliances £9,000 Structural engineer £1,300 Building inspector £1,000

Interior architect and project management Design & Lo, 074346 98236, designandlo.com Builders T&J Construction, 020 8358 4342, tj-construction.co.uk

Kitchen worktop

Granite & Marble UK, 020 7793 8804, granitelondon.net Steel windows/doors Fabco, 01903 718808, fabcosanctuary.com

Glazed roof Yes Glazing, 0808 256 5734, yesglazing.co.uk

Right The compact bathroom makes the most of a small space, with an over-bath shower and sink tucked between the bath and angled wall. Tiles, Topps Tiles. Vanity unit, Elle Decoration for Bathstore. Bath, Duravit. Brassware, Hans Grohe. Mirror and shelves, Cox & Cox. Walls painted in Pearl Green, Dulux

Left and right Lois and Guy extended the chimney breast to create a wall wide enough to rest the double bed against and built upwards to make inset shelving. Bed, Loaf. Bedding, Tkmaxx. Throw, Avoca. Rug, wardrobe, shelves, drawers and mirror, Ikea

Lois and Guy simply changed the UPVC doors in what used to be the kitchen to create a striking opening into a mini courtyard off the bedroom. Steelframed windows in the extension create a direct view from the bedroom into the back garden. Bedding, Tkmaxx. Linen curtains, Ikea. Steel doors, Fabco. Walls painted in Pearl Green, Dulux