What protection against burglary do you have? - Cost estimate?

Of course you may ask "pilzkopfverriegelung nachrüsten preis" and I got the information from the page that is named like the locking mechanism (should be the 4th result)

I'm just wondering why there are so few cameras here. They are dirt cheap in comparison and should be quite suitable for deterrence!?

I don't think burglars are deterred by that. Many gangs are just "passing through" anyway and no one recognizes them despite the footage. Some might even think there is something worth stealing if cameras are installed. Mechanical protection is more important.

The average damage from a burglary amounts to €3,300. The probability varies depending on the region, so (statistically speaking) one becomes a victim of a burglary every 50-200 years.
Burglary damage is covered by the household insurance, which is available for a few euros.

As already mentioned in other threads, we are preparing network cabling at 2-3 locations to possibly connect cameras later. However, we will not spend four-figure sums to reduce the risk outlined above, especially since everyone says something different about what exactly would be helpful. We would only consider the mushroom heads if we receive comparative offers. But if so, then only on the ground floor.

The material damage is usually insignificant, we agree on that. The psychological damage, that someone simply broke into your place, that someone could break in at any time, day or night, etc., is usually much, much worse after a break-in has occurred...

So we will equip all windows on the ground floor and one window in the basement (light well) with an RC2 fitting and lockable window handles. The RC2 fitting costs €30 and the lockable window handle an additional €15. The glass itself is standard triple glazing.
Our window manufacturer offers 4 security levels, which of course vary in price:
• Security level 1: Security window with fitting according to RC 1
• Security level 2: Security window with fitting according to RC 2
• Security level 3: Security window according to RC 2 N - with certificate
• Security level 4: Security window according to RC 2 - with certificate

The material damage is usually negligible, we agree on that.

The psychological damage, that someone simply broke into your place, that anyone could enter at any time, day or night, etc., is usually much, much worse after a break-in has occurred...

I know two cases in my circle of acquaintances where break-ins happened. A single-family house (patio door) and an apartment in a multi-family house (balcony/balcony door). Both times lots of chaos (1 day of cleaning up), no damage in the house, stolen goods were minimal, more so in the single-family house because she had jewelry.
Yes, the break-in is a huge story for a while. But life goes on. Nobody sits anxiously in the house thinking the bad guy will come back or would have taken pleasure in the underwear. After 2-3 months the topic is done.
In that respect, I see it quite soberly. It’s not nice, you don’t want to experience it, but it’s far from being the end of the world. To spend four- or even five-figure sums on that? In my opinion completely exaggerated and not appropriate. There’s a lot of scaremongering and lobbying in this topic.

I also believe that the mindset of "everything out there is evil and must be fought off" affects a person mentally far more than maybe experiencing a break-in once in a lifetime. The damage is already there before anything has even happened. I find that much more worrying.

Especially since there is no proven effectiveness. One person thinks a visible alarm light helps, another says it suggests there is something to steal. Then cameras are supposed to help, and then there’s the argument about marauding gangs from abroad, where the face doesn’t matter anyway and investigation with such means is also unlikely.
The fact is, whoever wants to get in, will get in. After all, we don’t build castles with crocodile moats and drawbridges. Living in a golden cage is only fun to a limited extent.