Property manager is forcing me to pay for a repair?
Pretext: I own a restaurant and next door is a tea shop. They complained to the landlord that water is leaking from my side of the wall. The landlord is telling me they have to tear down my side of the wall and the other side to repair “leaks” since they couldn’t find exactly where the water is leaking from. 
Today the landlord is telling me I will have to pay for the damages that occurred and repair that has to be done. Is this right? The total is 12k for it all.
[{"id": "irg2n68", "text": "You need to figure out where the source of the damage is coming from and also read the lease you signed. It\u2019ll tell you who is required to pay for what.", "replies": [{"id": "irg30ti", "text": "They insisted that it\u2019s coming from my side of the restaurant and but could not pinpoint where the leak is at.", "replies": [{"id": "irg48ha", "text": "To protect yourself, it would be a good idea to have your own plumber or handyman investigate the source of the leak.", "replies": [], "depth": 3}], "depth": 2}], "depth": 1}, {"id": "irg2opd", "text": "Is it a triple net lease? With no landlord responsibility? Then yes you are held liable.\n\nI\u2019d double check that lease still", "replies": [{"id": "irg321f", "text": "Thank you, I\u2019ll find my lease right now", "replies": [], "depth": 2}], "depth": 1}, {"id": "irg8fph", "text": "I\u2019d rent yourself an infrared camera, see if you can tell where the actual leak is coming from before you tear down a wall.", "replies": [], "depth": 1}, {"id": "irgmp6y", "text": "READ YOUR LEASE. And then pay your own plumber to run a camera to locate it.", "replies": [], "depth": 1}, {"id": "irgq2f7", "text": "You need to review your lease. I was extremely detailed on my wife's lease since I would also end up being responsible. The lease required her to repair any damage from neighboring units, the roof, glass, doors, security gates, etc. The property is on Hollywood Blvd in Los Angeles and is at the bottom of a 6 story apartment building. Knowing the area, I countered all of that crap out and made it the landlords responsibility as these are items she would have no control over. Good thing I did. So far, 2 leaks from upstairs have come down into her unit. Landlord had to pay all costs including crediting us for down time of the business.\n\nIf your lease doesn't state who is responsible, it would be a good idea to get your own person out there to see if they can determine where the leak originated from.", "replies": [], "depth": 1}, {"id": "irhgr18", "text": "You need read the verbiage in the lease , your most likely responsible, play nice with landlord because he has leverage", "replies": [], "depth": 1}, {"id": "irhgubk", "text": "And get GC there to fix", "replies": [], "depth": 1}]