The CCHGS ( crofting counties housing grant scheme) is only available to tenant crofters not owner occupiers. It's not administered by the CC but by the same Scottish government department that does all the agricultural grants. When the legislation changed the commission stopped administering grants or having the role of providing any kind of funding ect, so there are no grants from the commission.
There are three rates for the housing grant scheme dependant on your geographical area. 11k, 17k or 22k. There are no further amounts so it wouldn't fund a build, it will just contribute. Basically if you are a tenant and apply you will get it. If you are an owner occupier there is a way around it so you can also get it...........
Grants for barns, equipment and other things are another scheme, CCAGS. These too are not handled by the commission.