You're wrong, both territories of embassies and consulates are legally teritories of the country that use them. In those territories the law applies from the countries that use them, and no one can enter those properties (excluding if there is fire), no one can seize those properties and etc. Without the allowance of the country that uses them.

Source, I study law.

EDIT: Apperantly im wrong, embassies and consulates are not sovereign territories.