Need justification for demanding a site visit on all appraisal engagements?

If you think of the Washington DC law firm Steptoe & Johnson, images of white shoes, mahogany furnishings, and lush artwork come to mind.   That's all true--they have nice offices befitting a top 100 U.S. law firm.  But, they have something else; the exhaust of the burger restaurant on the first floor ducting into their venting system.  Steptoe has sued the burger place, Rogue States, to try to get them or the building owner to reroute the exhaust from the grills.  Meanwhile, employees are getting sick.

Perhaps this is a good example of the fact that you can't really know what's going on with a business until you've sat in their offices.  Fries, anyone?