In Nepal you probably have to use locally available material. In the case of the hills, that boils down to use of stones. When stones collapse on you, that is bad news. The solution perhaps is to use cement instead of mud to keep the stones together. A few bags of cement might be enough for one family.
Build Earthquake Resistant Houses On A Tight Budget
New Inexpensive Earthquake Resistant Houses
Made In Japan: Earthquake Proof Homes
In Search Of An Earthquake Proof Building
How To Build An Earthquake Proof Building
Earthquake Resistant Structures
There is also a need to rebuild the Dharahara. It has to be a new tower built in the 21st Century. It should primarily be used to beam free WiFi across Kathmandu valley.
I think the Japanese will do a good job of restoring the historical sites, as they have pledged to. They have the know how. Just make sure people don't take away any material!