How to approach construction planning?!

Hello everyone,

the first step has been taken. A plot of land is now ours!
Now it's time for further planning. But how should we proceed?
Or rather, how did you do it?

We have rough ideas about the room layout and living space. Also, that it should be a bungalow.
But we don't really have more precise ideas yet. It should be simple, not a luxury house.

We want to go to the model house park this weekend. Just to look at houses, to see what is available or what is even possible... to gather ideas...

We would like to build turnkey with a developer. We have already received a few recommendations.
Three offers to compare would be ideal.

Do we just go to the developers and have a conversation? And then they make us an offer?
Do we already need more concrete ideas, or can this be discussed on site?

How did you approach the planning?

I'm curious about your experiences. We are still pretty clueless...

Thanks in advance for your answers!!

In principle, it is best to choose 3 favorites and make appointments with them. The further procedure will then be discussed there. But everyone handles that differently. Some already plan with you. Some only really act when you have signed something (I would never do that). But in principle, I would try to clarify as much as possible before any signature.

First, define the financial framework.... Otherwise, you daydream and let yourself be dazzled by the fancy model homes. In the end, the disappointment is great.

What do you have available, or what costs are you expecting?

We have already taken note of the signature part as well. Otherwise, there would be plenty of negative surprises.

It was also always the question of when it is best for us to go to the bank. Our limit is 180,000€. Maximum maximum 200,000€.
Since I am still on parental leave for at least another year.

About 700€ for repayment and interest should work. Possibly with [KFW].

Hoping to manage it this way...

Only for the house or for everything? As additional costs and property? Because it might just be enough for the house. But definitely not for the property and additional costs.

Plot does not need to be financed. It would only be about the house and the surrounding area. Although the outdoor facilities do not need to be completed immediately.