Here’s the thing about this “building” - and Prime Minister Benjamin Netanyahu spoke directly to this, very specifically, on several occasions.
Prime Minister Netanyahu said that the building is ONLY going on in areas where ALL PARTIES agree that Israel will have inside the country in the Final Status talks. Israel is building ONLY in areas that they will retain at the very end - and everyone agrees about these areas.
SO ... the Palestinian Authority is simply trying to throw up a roadblock to stall the talks, because they really don’t want a Palestinian State. I know it sounds weird, but they actually DO NOT WANT a Palestinian State, in which they have agreed to recognize Israel’s right to exist and in which they will have given up - permanently - all future claims (which is what they would have to do in order to get their Palestinian state).
That is one of the reasons they don’t want an Arab state. The other reason is that once Israel removes its forces from Judea and Samaria the presnt leadership is gone - gone as in blown to pieces or shot. The same thing will happen as it did in Gaza and Erekat, Abbas et co are fully aware that this is what will happen.
The only people who do not understand this are the golden minds of the foreign offices in the western countries. Remember that Israel warned the West what would happen if they allowed Hamas to take part in the PA elections 2006. To no avail of course. And so to the consternation of those Rolls Royce minds Hamas won and threw a big spanner in the so called peace process.