Architect much more expensive than thought

Anyway, our plot is a prime piece of land and therefore it would be best to put a big house on it to make the most of the property.

There is no logic to be found in this statement. Just forget it.

Is he right and should we talk to the financial advisor again?

If you want the bigger house, he is right. It seems to me that you are unsure about what you really want and/or not very communicative. Often architects try to take a path in a goal vacuum that they themselves would follow. But later you live in the house and pay for it all.

First take care of your own decision-making process and then enter into communication again. The description "Nothing special" always makes me alert in connection with an architect-designed house and hillside location.

So: How do you want to live? What do you want to enjoy on your prime piece of land? That’s where it starts, and the result can be anything from a tiny house to a huge cabin or a container village.

I would have actually expected now that we see the not special, simple house and the design is posted here :)

yes, please upload the draft.

Please upload a floor plan and a complete questionnaire.
Do you have offers for the demolition?
Is there a soil survey?
Is slope stabilization necessary after the demolition?
Has a structural engineer already been involved?
What do you mean by nothing special? No offense intended. Often, what is hidden under nothing special/standard are huge cost drivers.
Reflect on your wishes and formulate them. A detailed room program is helpful. Not a dressing room would be somehow nice, but not mandatory, rather a bedroom for an oversized bed, dressing room with 6m of closet space, etc.

I fear that your budget will not be sufficient for 200 sqm either. An outdoor area will be added that is more expensive on the slope. Every square meter of flat surface must be artificially created.

Always mentally add another 20-30% on top for Archihaus..........

Is someone confusing custom planning with haute couture again?

Is someone confusing individual planning with haute couture again?

No, but am I really that wrong?