The appraiser is at the mercy of the lenders for his business. What the lender asks for, makes a world of difference. The willingness of the lender to respond to the buyer and the buyers real estate agent greatly affects what the lender asks of the appraiser.
San Jose home values at http://julianalee.com/san-jose/san-jose-statistics.htm
Top 2 agent nationwide at Keller Williams Realty, the nations largest
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Over 1,000 homes sold in Santa Clara County and San Mateo County
However, if you are looking at an appraisal that is not for a typical track home or in area where there are not many comparable sales, you could be looking at a few weeks.
Typically agents write a 10 or 12 day appraisal contingency removal and that should be plenty of time.
I am the buyer, I am the one who paid for appraisal and I believe I should be able to reach someone to get some answers. As soon as I know who this appraisal company is, I'll file a complain with every possible agency.
The normal appraisal is around $400 and will arrive 5-10 days after the lender orders it.
If you need something in two days or shorter, a rush fee will be charged.
Keep in mind, appraisers often have to work harder on some appraisals that have unique properties and/or happen to be in an area that have few comparables. Asking for a rush on this type of appraisal may not be wise.
Once appraiser has come, it seems 3-5 is about average, although I've seen them take as long as 10-14 days. Hopefully you'll receive good news soon.
If you're concerned it won't be received in time to remove your loan/appraisal contingency, ask your agent to prepare an extension and call the other agent now so it's less of a surprise.