I decided on the proper height for shower controls by standing in my existing bathroom and reaching my arm out to see what was comfortable. Repeat for relevant family members and come up with a compromise. If you know the fixtures you will use, tape templates to the wall at the right height. Then write the measurements between controls and to the floor on vertical pieces of masking tape, photograph and provide as a spec. (I did mine with a handyman, no designer). Worked perfectly.
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cabinets, mirrors, counter
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