For residential multifamily properties (1 - 4 units), can you use a home warranty to take care of the repair costs associated with rentals?

However, I still struggle to understand the art of estimating rehab costs. 

At this point since it's after the fact while not totally correct; you may explore adding the missed asset/basis amount as a selling cost to just reduce your gain. 

This will make it a lot easier to manage, will cost you less than buying on the market and typically you can get 1:1 rent returns.

Cost of construction is expensive and about to get worse.

Quote from @Jeff Sanders: Personally coming from an agent/investor in CA, I always get a quote from a broker of mine and make sure I am knowledgeable with the fees/costs.

Was going for the best cost-of funds (lower rate)

Platforms like Avail can help if you prefer to self-manage but still require time for repairs.Tax-wise, repair costs may be deductible immediately, while major improvements must be depreciated over 27.5 years.

Do you work with any specialty tax firms to help us small business owners get access to R&D tax credits, cost segregation and other specialty tax credits?

Usually the numbers don't work to build in these neighborhoods, unless government tax credits, etc.Do you see the problem with your two statements:"The turnover costs could/will be high"and"How much more damage could they do?"