A floor contains several layers. Its finished height affects doors, stairs, kitchen units and transitions.
What the drawing needs to explain
Draw two uses within the same floor plan. Mark walls, doors and connections that stay unchanged and identify the alteration actually needed later.
Agree a reference level
Use one datum for everyone and record existing and proposed finished heights. Rough construction dimensions are not necessarily ordering dimensions.
How to review the result
Check the agreed current use fully. Then review preparatory provisions so future options are documented rather than left as a general promise.
Which trade-off matters?
Preparing for every future possibility can unnecessarily increase the budget. Compare simple preparation, such as accessible routes and a considered layout, with provisions that might never be used.
Questions for your own property
- Are finishes included in heights?
- Do doors and stairs still work?
- Are all floor layers known?
Illustrative design situations, not evidence of completed work. Assess decisions against the actual property.