Every solution I post suggests a 'level of effort' to help readers determine if the solution is one they can implement themselves or probably requires some assistance. But use common sense when reading the solution, and don't take on more than you can handle safely!
DIY means you can probably do this solution yourself, especially if you're handy with tools and have access to a basic toolbox. (Can you put together not only IKEA furniture, but something whose sole instructions are muddy pictograms captioned in Chinese? You should be fine with a DIY fix.)
Handy Person means the solution requires more than basic tools (perhaps a power saw or heavy-duty drill), is easier to do with four hands, or must access a place in your home you yourself can't reach.
Contractor/Builder means the solution requires skills, tools, and/or effort beyond what the average home-owner has at their disposal. Pouring a concrete ramp, replacing doors or windows, widening a door, or remodeling a bathroom or kitchen: all might call for the help of a licensed professional builder.
Architect or designer means the solution -- particularly as it applies to your home or building project -- would benefit from the thoughtful assistance of a design professional. Extensive kitchen or bathroom renovations, extensions to an existing home or, of course, designing a new home: these are where the advice and ideas of an experienced design professional benefit your project immensely.
An aside: many licensed builders or contractors also have architecture or design degrees -- they just may not have opted for the arduous process of gaining their architect's license. I recommend you interview several architects, designers, and contractors before placing your home in their hands: attitudes and experience matter more than degrees. Make sure they are licensed for the work you need done (just as true for electricians, plumbers, and so on).
Move means literally that... It sometimes happens that the solutions to the property's problems are so extensive or expensive, either due to the home's setting or construction or your personal accessibility requirements, that moving to a more accessible home is really your best, most cost-effective, option.
