Avoid chipboard panels (mellamine) in any areas exposed to water or steam, eg drawers near a dishwasher (it eventually swells). If you do use chipboard, make sure it is HMR (highly moisture resistant) which has green flecks in it. This type lasts better if exposed to water or steam (John).
We have a 70cm deep benchtop. We assumed the drawers below would also be nearly 70cm deep, but the kitchen people installed 'standard' depth drawers of 50cm. If you have deeper cabinets and you want to use all the storage space, then request 'full depth' drawers (Mary).
Pay attention to the 'internal' measurements of your cupboards. Often when you see a measurement on a plan (eg 50cm wide) you can end up having only 45cm or less of internal space because of the width of the carcass. So make sure your plans show the internal measurements as well as the overall measurements (Lorenzo).
Here is a standard note you can add to the joinery plans to make sure the carcass finish is good:
'Internal carcass, 19mm white melamine with a 1mm ABS edge. Ensure internal carcass is not visible from the outside, (so there are no gaps between the drawers or doors through which you see the white carcass). All fixings and joins to be fully concealed, and no visible screw caps. Pre drill all holes for adjustable shelving at 3cm intervals. All adjustable shelving 25mm (or however thick you want the shelving) thick white melamine with a 1mm ABS edge' (Mary).
If you want a two pack finish to your cupboards, drawers or shelves, be clear about which parts will be two packed. Unless you specify in writing 'all sides' to be two paked, you might end up with only the front surface being two paked, and not the sides and backs. The same applies to vinyl wrap (Mary).