Tenant refuses to Allow me in Property: HELP!!!!

[Sam Stabler]

I'm a landlord who owns a Single Family Residential home with a detached unit in the back in Los Angeles County. The detached unit is about 95% done before the City Inspector can sign off on it and give me the Certificate Of Occupancy. For the past 2 months I have not been able to bring my contractor to come into the property and finish the small amount of work remaining which is 2 days worth because my tenant who occupies the front unit refuses to allow anyone, including me, from entering the property because of the Stay At Home Order. He refuses to open the gate and wrote me a long email advising me because of the Stay At Home, I am not legally entitled to come to the property. 

How do I go about resolving this issue??? I am bleeding money right now. My wife has lost her job, my pay has been greatly reduced. And to make matters worse I can't replenish all the cash I have dumped into the construction costs by taking out a HELOC because the property has a lien from the City as a Hazardous Site since initially we didn't obtain a Permit from the City and got flagged by the Inspector.

This has been a nightmare and I just want it to be finished. Today the County announced they would extend the Stay at Home for another 3 months but that is something I cannot wait for. Please, any guidance here would be greatly appreciated.