Why are large garages so expensive?

What actually makes a brick garage so expensive?

I talked to an acquaintance 2 years ago who said that nothing is cheaper than having a garage built onto the house right away.
However, in our previous conversations with the house companies, I was always told that nothing is cheaper than a prefabricated garage.

We are planning a double or better yet a large garage that easily has space for 2 cars and some storage.
Something like that would probably cost about 15,000 euros as a prefabricated garage + foundation.

However, when a house is planned and built, there should hardly be any additional costs to build a simple flat-roof garage onto it, right??
Basically, I could get along with a prefabricated garage, what bothers me more or less is that there seems to be no way to integrate it so that you can get directly from the garage into the house?

Hello,

What actually makes a masonry garage so expensive?

The effort and the labor hours involved.

Two years ago I was talking to an acquaintance who said that nothing is cheaper than having a garage built onto the house right away.

That is always the problem with acquaintances, friends... They are usually not from the industry and therefore only have half-knowledge; if anything at all.

However, if a house is planned and built once, there should hardly be any additional costs to add a simple flat-roof garage, right??

You don't need a slab for that? A structural calculation, drainage or even execution drawings?

Basically, I could also come to terms with a prefabricated garage, what bothers me more or less is that there is probably no way to integrate it so that you can get directly from the garage into the house?

Says who?

You can have a pedestrian door installed at any point on the garage wall adjacent to the house and then there is the connection to the single-family house.

Aside from the costs – the common sizes are standard dimensions and consequently inexpensive to produce – the wall thicknesses also speak for a prefabricated garage. For masonry, we're talking about 17.5 plus exterior plaster; with a two-door garage that can get tight. In contrast, prefabricated garages have a wall thickness of 8-10 cm, depending on the provider; finished. Instead of a slab, strip foundations are used.

Rhenish greetings

Okay thanks for the info.

Yes, I just don’t understand that it’s really so much work to calculate something structurally and then build it. A four-sided garage should be statically pre-calculated just like a catalog house. Pouring the foundation should be included when pouring the house’s floor slab, just like stacking a few stones.

Considering that a simple shell house is available from 70,000, a built-up garage for 30,000 is quite steep, isn’t it?

The fact that a prefab garage can be integrated sounds very good though. I haven’t seen that anywhere so far. Usually, they’re just placed next to the house and the minimal gap between house and garage is covered with some plastic panels.