Rachel and Andy Smith's middle child Isaac has spastic quadriplegia, a severe form of cerebral palsy and Andy or Rachel must be available at all times to care for him because he sleeps fitfully in a hospital bed in the family living room. It's making family life stressful including for Isaac's siblings as the design of their home is in conflict with what this family really need.

The DIY SOS team and hundreds of volunteers turn the Smiths' lives around by building an amazing extension and a beautifully landscaped garden.

Nick Knowles, Laurence Llewelyn-Bowen and the ‘Purple Shirts' team venture to Blackpool to tackle DIY SOS: Million Pound Build for BBC Children in Need.

This special DIY SOS looks at some of the lives of the nation's young carers supported by Blackpool Carers Centre, which receives funding from BBC Children in Need.

The programme features 11 year-old Tyanna and 10 year-old Gracie, who cook, bathe and generally care for their disabled mother Suzanne, a former nurse who was diagnosed with osteoporosis, as well as their dad Sean, who was recently diagnosed with cancer.

The DIY SOS team and hundreds of volunteers work tirelessly to renovate an enormous neglected site owned by the Carers Centre, from a dilapidated building to an unrecognisable, inspiring and colourful base for Tyanna, Gracie and many other youths with caring responsibilities.