As noted above Trusscore or other materials can be installed over the thermal barrier. For instance, we have a block wall between the house and garage.

Leaving exposed foam board on 3 walls is counterintuitive to having something "tough" for the walls (and resistant to pests).

For the U.S., please refer to IRC Table R302.6. You will need 5/8" drywall Type X on the ceiling and 1/2" drywall on the shared wall. You may cover with anything on top of that. Then, refer to IRC Section R316.4 where you must cover the ICF foam board with either 1/2" drywall or 23/32" plywood. These requirements are for life safety regardless if they are enforced.

Drywall is the cheapest and maybe easiest to repair. Plywood is probably the most versatile in a garage. Other materials like FRP, cementious, or steel panel products will not be versatile, but look good. You can also vary where each material is placed based on storage/use, or do just a wainscot.

If you use 1/4" steel plate you can hold things on the walls with magnets.

@2rickles. We went with soapstone when we built in 2018. I wanted real stone, and mat surface. I might have gone with quartz if the matte stone was available but unfortunately the ones I liked came out after we built. Of course. There are many things I love but mine scratches easily. It’s got patina now so after 5 years it looks more cohesive. I didn’t oil mine either

Thanks everyone. We are happy with the way the house came together. Still lot more work to be done on the outside but that’s ok.

@izzieo the last picture for the bathroom vanity is from Wayfair. We went with inexpensive options with the guest bathrooms.

We spent last few days setting up closet system using container store system for all of our closets. Let me know if you want to see pics. It was a lot of work for my husband but it looks great. They were having their annual sale awhile ago so we splurged on this and spent about 12k but I think it was worth it

@Keen B, and for anyone else who's interested, I checked in with my stone expert friend about the quartzite slabs I selected. He knew exactly which quarry it came from in Brazil. He said when the stone is called Blue ocean or Blue sky, or similar, it's actually White Macaubus, which he confirmed is a true quartzite (not a dolomite, like some white quartzites--dolomite etches like marble). He said it's a very good, tough material. He also said that usually the absorption rate is 0.17%.

I read that this is one of the more porous quartzites, so it does need to be sealed. They're sending me a cut sample and I'll test it. The fabricator has told me to seal it with an impregnating sealer like 511 Porous Plus. Not sure other folks have used?

That is fully high end custom, for a steam shower. The transoms should be operable. Probably 9K for the whole door system. Or more. Plus the 20K steam shower vapor proofing upgrade. You will need a vapor proof lighting and fan, inside the shower. Not damp rated. Vapor proof rated. For everything. With the proper ceiling slope. Otherwise its's a giant petri dish of mold.

@MInardi the OP never said she wanted a steam shower, only the framed look like that.

I didn’t know that they made framed shower glass that looks like the above - very cool looking!

I would definitely want to have someone come in and clean that for me every week - because I don’t enjoy using a squeegee on a frameless shower enclosure - can’t imagine the extra work needed to keep that type looking nice!

But it is really an interesting look!