I retired three years ago - and in that time I've rewired the house, replumbed the house, all new central heating, new boiler, new windows, 2-storey rear extension with kitchen/breakfast room, the old kitchen taken back to brick and redone into a utility room, downstairs bathroom back to brick and redone completely, chimney breast removed & floor rebuilt, en-suite bathroom and bedroom created, cupboard under stairs removed, coat cupboard built, all new internal doors, upstairs bathroom redone, new garden wall and a porch built.
The only things I've had people in for is plastering and digging foundations - I've been a busy boy. Don't know how people find time to work.