Wajid and Anam from Burnley have now completed more of their ambitious house in their own luxurious style - but have hit a problem. They are struggling to make the largest room, which sits at the heart of their home, feel welcoming. But how do you make big rooms feel homely without just putting up walls? Piers searches for an ingenious design solution to solve it. Having drawn a blank with traditional furnishings, he delivers a radical idea inspired by a fashionable hotel, but can Wajid and Anam pull of the idea for just £1,000? In north east Scotland, the dream Heidi and Steven had for a home of their own has become a reality - they are settled into their family home with their two young children. The home is perfect but it still sits in a barren piece of wasteland. The seemingly impossible challenge here is to turn a pile of builders' rubble into a stunning, usable garden that is safe to play in for just £1,000. Piers takes a risk and shows them an extraordinary piece of landscape architecture in Edinburgh which could inspire a breathtaking design, but with such a tight budget, can it be done? Recycling building materials and an ingenious way of sourcing very cheap turf could be the answer.

Sue and Tim continue to push ahead with their hugely ambitious modernist home in Somerset, committed to showing what is possible on a limited budget. All of their energies now are focused on what should be the stunning centrepiece that transforms their home - an entrance hall staircase - but they only have £2,000 to do it. Piers uncovers an idea at one of Britain's most stunning contemporary interiors, but Sue and Tim must follow a series of low-cost lessons to have a chance of achieving this high-end result with their low-end budget. In north east Scotland, Marcus and Sholto have made some big design changes to their £100k home since we last visited, but also have a fresh problem to solve. The pair fell for the stunning rural landscape, and their outstanding challenge now is to create outbuildings fit to stand alongside their glorious home. With inspiration taken from an extraordinary building on the banks of Loch Doine, Piers comes up with a design which incorporates seating and mirrored panels that could enhance any outdoor space, but can Marcus and Sholto pull it off?