You likely are not going to get a reduction in your taxes.

His lawsuit and others have no weight.

They may also require US credit history, although there are a handful that will not require a US credit report for an increased rate/ reduction in LTV. 

Overall, weight the pros and cons of a switch in manager and whether another manager would make the same or similar decisions in other circumstances.

I maintain even break even on valuation (which is rare in SF Zoned areas), the ADU has big disadvantages versus new property acquisition including financing, level of effort, rent control, prop tax being based on cost rather than value added, length of time including length of time from first expenditures to first income, reduction of something from existing unit (in your case existing home lost its garage).Did you see starting next year Mf can add an ADU per unit up to 8 units without any affordable housing concessions?

My portfolio is heavily weighted towards real estate, largely because of California appreciation.

I completely understand that the Costa del Sol carries significant weight in global tourism and international investments.

Would this be an optimal win-win for risk reduction + tenant satisfaction?

It's like only using weight to measure fitness.

A price reduction doesn't solve the issues this property presents.