fRa too fact intensive a matter for on line review. Take any paperwork you have, and your facts to a good local tenants lawyer - or get out now....

You can record a "memorandum of lease." If you have a BUSINESS; then you should have a lawyer representing you, and explaining this too you. Hope...

I think this may be a duplicate question; see my prior answer. gsg

This depends on the terms of your Lease, and the facts (ugh) on the ground - neither of which we have access to here. There is very little chance...

I agree with my colleague; consult a good local real estate litigator. Hope this helps. gsg

Consult a good local family law attorney of real estate litigator. No one can help you with this here on line, sorry. Hope this helps. gsg

No one can help you with this here on line, sorry. Consult with, and retain a good local real estate litigator. Hope this helps. gsg

What does your lawyer say about this? gsg

It's hard to be sure, but if this "roommate" is on the the Lease with you, No; No; No; No (have no idea what you mean by "master tenant" - there is...

I agree. And yes, it's likely you can get a lawyer to get a judge to let you in, get your stuff, and sue the --- out of these creeps. They DO have...