Since the garden often comes last in a new building project, there is often the risk that other items have already consumed part or all of the budget.
On the other hand, I also find it unrealistic to have the entire outdoor area immediately after the house is completed looking like something out of a garden landscaping magazine. For many, it might be possible to spend several tens of thousands of euros more and lay turf, but that won't happen for us.
Once all the bills are paid, we will see how well the plans have worked out. Then investment will surely be made in paving, and everything around it will be developed little by little over the next few years - as a DIY project without a garden architect.