I would say that most jobs can be done if they are competent, but no 'handyman' should be doing work that needs a qualification such as electrics and plumbing and gas installs. So any thing like painting, decorating, shelving, coving, tiling, laminate flooring, flat packs, curtains,blinds, should be well within scope. But check for reference's first! This should be a guide only and hope it helps.