ᐅ Garage insulation cannot be installed

Hi.

We had a garage built with concrete walls. One side is buried about 1 to 2 meters (3 to 6.5 feet) underground (the left side when looking from front to back). Since the garage is directly adjacent to the neighbor’s property, our structural builder said he could not install insulation or drainage membranes. The architect also said he sees no problem with this. However, an acquaintance strongly advises us to avoid this approach...

What do you think? Thanks

Maybe the issue is not clearly described.
According to the shell builder, he did not apply a black coating to the concrete wall and did not use dimpled membrane sheets. The reason is that he cannot access the exterior side because it borders too closely to the neighboring property....

After rain, we already have water in the garage. According to the architect, it is not too serious; the joint can still be sealed.

What do you think? I have not fully paid the shell builder yet.

Insulation is one thing, waterproofing is another.

I might understand if no insulation is used, but applying a waterproofing layer with thick coating or sealing slurry should be possible. Or is there an argument over just 5mm (0.2 inches)?

They should provide you with written confirmation that it is watertight and be liable if it is not.

Otherwise, a work space would have had to be created here to install the sealing and insulation.

Well, it is clearly visible from the photo that it is leaking.

Regarding the solution mentioned by @lastdrop, can this be applied from the inside? Do you have any links where I could find more information to better understand it?

What lastdrop mentioned is a coating applied on the exterior. Just search for thick coating for basements.