Are you working with an agent? If not you will be better off if you find a good one. If you are paying cash which may be your only option, you don't need an appraisal. If you are financing there aren't many options. Sterling Bank is a possibility but may only be doing SF now. The value of any piece of real estate I determined in the market. Best bet for you is to talk with your agent. I'm sending this from my phone so please excuse the brevity and the typos.
We are all assuming you don't have an agent yet, because if you did, many of these things should have been explained to you. Good luck!
Mary Canavan, Broker
Thornwall Properties, Inc.
If you don't have an agent you should get one who specializes in this type of property because it's complicated. We have used an appraiser who does TICs a lot - was recommended by Sterling Bank - who seems to be good. Drop me a line if you want contact info.
We deal with TICs on an ongoing basis and to the best of my knowledge only Sterling and NCB are doing fractional loans, and I believe they do deals outside of San Francisco.
Whatever you do, based upon your description of the property it should be a LOT cheaper than a comparable condo.
Lance King/Owner-Managing Broker