Step 1: Ensure you can get financing (is it a cash purchase or will you need a loan). 

This means there are no checks and balances to ensure all transactions are entered correctly.

I was thinking of starting a rent increase for my 1 bedroom tenant voucher due it being low and well under fair market value(Based on  hud and zip code) but my tenant is in the process of having a caretaker for her disability and getting approved for a two bedroom voucher.

Simplified ManagementFor those managing multiple properties, AB 2622 streamlines operations by expanding your hiring pool and removing the red tape often associated with minor repairs.Why It Matters for TenantsTenants also benefit from AB 2622:Faster Maintenance: Minor issues like plumbing or lighting can now be resolved promptly.Fairer Move-Out Costs: Affordable repairs mean tenants aren’t hit with inflated charges for damage beyond normal wear and tear.Things to Keep in MindWhile AB 2622 makes maintenance easier, landlords should still vet unlicensed workers carefully, ensure proper insurance coverage, and remember that jobs requiring permits must involve licensed contractors.AB 2622: A Win-Win for California’s Rental MarketAB 2622 strikes a balance between flexibility and accountability, making it easier for landlords to maintain high-quality rentals while fostering better tenant relationships.

This ensures that any settlement check will be issued to you AND the tenant - and that you can interact with the insurance provider.  

Quote from @Cari Sweet:  This sounds like a case for Fair Housing- Familial Status discrimination. 

Are there specific steps or systems you follow to ensure it’s done correctly?

DSCR loans are usually what I recommend to ensure approval as your qualification is not based on your income but the projected rental income of the property.

Do you think that is fair - to be forced to pay for your manager's mistake?

For the next 10 months (40 weeks) you spend a fairly reasonable 5 hours a week marketing, communicating with guests and your property manager and bookkeeping.