Burglary-proof windows?

It's an older thread, but I'll still give my two cents! If it's about advice, you can also get that at a locksmith. I ordered such a security check myself and after making inquiries, I decided to secure the windows and doors additionally with mushroom-head locks. On the front door, a 5-point bolt lock and possibly an alarm system, but I still have to think about that carefully.

You are completely right.
There are plenty of companies specialized in such things – whether locksmiths or security firms.
Police advice is especially interesting to us because there is no interest in selling anything here.
Generally, you try to get an objective picture with every consultation.
This is often not quite guaranteed with companies that earn money from selling products, no matter if it’s in the security sector, heating technology, or other industries. Even the baker’s wife recommends her products to sell them to you.
The advantage of advice from a company is of course that the company can usually present the right solution (product) to you immediately.
To be clear – advice from companies (across industries) is also an option.
But for me, the objectivity was the decisive advantage of advice by the police.

I agree. I have an appointment there next week (first a personal consultation, then a public lecture). My contact person seems quite committed; after my email inquiry, he called immediately to clarify some things in advance. I think the police are certainly not the wrong contact.

As far as I remember, you are still in the planning stage. Therefore, I recommend that once the construction plans are finished (i.e., the plans you also submit for the building permit), you schedule another appointment with the police. (It would make sense to finalize everything contractually with the house construction company only afterwards or after incorporating the results of the consultation <-- the company had no problems with this in our case).

Good idea, thanks! We are already quite far along, but the measures can definitely still be implemented. I am very curious whether something will be proposed that we have not considered yet. Although - I assume that this will be the case.

Surely, one thing or another will come up. The gentleman with us was indeed surprised that we had already thought of many things. However, he also had additional suggestions. Moreover, he saved us from possibly useless investments, as in his experience they would hardly bring any benefit.

Ah, exciting. Our current house is located in an area with an extremely high number of break-ins (at the "Brennpunktrand"). Here, cameras are popping up like mushrooms. And what happened? Our neighbor's house was still broken into.