Prefabricated garage - thought of everything?

Hello everyone,

I am new here and creating my first topic. Although I have read some other topics, I haven't really found anything concrete regarding my current question.

My partner and I are planning a new build this year with a solid house provider. Contracts are signed and soon we will have the planning meeting with the architect.

Currently, the topic of prefabricated garages is on my mind. I have already obtained some quotes (there really are many providers) and as a layperson, I am unsure whether I have considered everything and have one or two questions about it.

What should I pay attention to in the offers besides our special requests (sectional door with electric opening, extra door, and electrical package (i.e., lighting and socket))?

I always have an offer made for the foundation and have read that if the garage is directly attached to the house (like ours), you need connection strips (I believe to seal between house and garage?).

The house will be a new build and will be plastered. Can the garage even be built right next to it shortly after, or does the plaster first need to dry for a longer time? And if so, how long approximately?

Also, we already have a few offers. One stands out in terms of price (significantly cheaper), but it is not made of concrete and I cannot assess the quality at all. The offer states:

"[Aus bandverzinkten Trapetzblechen und verzinkter Stahlkonstruktion. Die verzinkten Dachtrapetzbleche haben eine beidseitige Aluminium-Zinkbeschichtung Incl. Verbndungs- u. Befestigungsmaterial. Geteilte Wände!]"

Also

"[4-seitige Attika-Verblendung
Ausführung: Beschichtet]"

I hope this wasn't too much and someone has one or two tips for me or an assessment.

Thank you in advance.

First. Take a concrete garage. Ours is from Reker, the quality is excellent.
Second. If it, like ours, is right next to the house, it is placed first. Then the house is built. The area behind the garage is not plastered, it is like with brick cladding, where the Ytong or bricks are also not plastered. There is an air layer between the garage and the house. This should not get wet. Therefore, not the garage installer but the roofer attached an angle sheet metal onto the garage roof and to the house wall. The vertical gaps were sealed with MS polymer mastic. The garage also received an aluminum parapet from him.
Third. The electrician did the electrics in the garage, which was much cheaper than with Reker. An outdoor cable was included in the building specifications anyway, he drilled it into the garage, light switch, two sockets, one Philips LED light, done.
Fourth. The Reker plaster is good but gets dirty quickly. Therefore, the garage was also painted with silicone facade paint, like the whole house.
Fifth. We also bolted the satellite dish to the garage. So if anything needs to be done, everything is accessible with a step ladder.
The price was 8,000 with tax, six by three, door and gate without electrics. Plus 1,000 roofer and electrician. Photos still without parapet. Karsten

Great tips from ! If it is not possible to set up the garage first - consider logistics costs, because if only a special transporter can be used due to accessibility, it will be expensive. Connecting it to the house would call the prefabricated garage concept into question.

Maybe planning an electric car? If yes, then I would have a cable laid to the garage right away. Additionally, lay an empty conduit from the utility room so that if necessary a LAN cable can be pulled to the garage for the wallbox.

Thank you very much for the tips and also for the pictures.

no plans in that direction. But still a good tip.

Does anyone else have anything I should consider? Because I only came across the thing with the connection strips by chance.

Order the garage without plaster and have the same plaster applied as on the house. Then it will not appear as much like an unrelated foreign object placed next to it.