The Great Interior Design Challenge Sourcebook -

A core pillar of the series is the "Heritage Challenge." The sourcebook provides step-by-step guides on transforming junk-shop finds—like turning old crates into shelving or re-upholstering mid-century chairs—to add character without the designer price tag.

Because the show often features cramped quarters, the text offers clever "hacks" for zoning open-plan rooms using rugs, lighting, and paint "intervals" to create the illusion of more space. The Great Interior Design Challenge Sourcebook

It includes "Pro-Tips" from judges like Sophie Robinson and Daniel Hopwood on the technical side—measuring for curtains, choosing the right lightbulb color temperature, and "dressing" a room for that final reveal. Why it remains relevant: A core pillar of the series is the "Heritage Challenge