I found this from the Israeli Ministry of Foreign Affairs
http://www.mfa.gov.il/MFA/MFAArchive/2000_2009/2003/2/DISPUTED%20TERRITORIES-%20Forgotten%20Facts%20About%20the%20WeThe West Bank and Gaza Strip are disputed territories whose status can only be determined through negotiations. Occupied territories are territories captured in war from an established and recognized sovereign. As the West Bank and Gaza Strip were not under the legitimate and recognized sovereignty of any state prior to the Six Day War, they should not be considered occupied territories.
From a 2001 Human Rights Watch report-not much on legal status of WB & Gaza, but one sentence reveals something:
http://www.hrw.org/wr2k1/mideast/israel.htmlMore than 90 percent of land in Israel is state land, much of it expropriated from Palestinians.
Relief Web has an article about the legal status here:
http://www.reliefweb.int/rw/RWB.NSF/db900SID/EVIU-69HJYR?OpenDocumentFrom the outset, one should note that all parties agree that the situation in the OPT falls, at least to some extent, under the legal regime governing occupation. There are, however, substantive disagreements about which international legal instruments are applicable to the OPT. In particular, Israel does not recognize the overall de jure applicability of the Fourth Geneva Convention to the OPT, even though the Israeli High Court of Justice does admit the applicability of certain of its provisions as representing customary international law. This position has been strongly criticized by the rest of the international community. (For a discussion of Israeli objections to the applicability of the Geneva Conventions, the reader should consult the policy brief on the Application of International Humanitarian Law (IHL) to the OPT.)
Despite its objections to the overall application of the Fourth Geneva Convention to the OPT, Israel does, however, recognize the application to the OPT of the rules on occupation contained in the Hague Regulations, on the grounds that the Hague Regulations are now part of international customary law. Finally, since Israel ratified neither Additional Protocol I to the Geneva Conventions nor the Rome Statute of the ICC, these instruments are not formally applicable to the OPT (albeit only to the extent that various provisions therein do not form a part of international customary law).
And from B'Tselem-Israeli information center for human rights in the occupied territories:
http://www.btselem.org/English/Publications/Summaries/200205_Land_Grab.aspIsrael has used a complex legal and bureaucratic mechanism to take control of more than fifty percent of the land in the West Bank. This land was used mainly to establish settlements and create reserves of land for the future expansion of the settlements.
The principal tool used to take control of land is to declare it "state land.” This process began in 1979, and is based on a manipulative implementation of the Ottoman Lands Law of 1858, which applied in the area at the time of occupation. Other methods employed by Israel to take control of land include seizure for military needs, declaration of land as "abandoned assets,” and the expropriation of land for public needs. Each of these are based on a different legal foundation. In addition, Israel has assisted private citizens purchasing land on the "free market.”
Hope these sources help.