I've heard that when you factor in office space, desks, computers, benefits, etc.; the cost of hiring an employee to the company is roughly 2x their gross salary. (As for income tax, at that bracket, it's something like 40-50%?)
In 2015, a new employee costs $150,000, and their computer still costs $3000 (or less) - and now lasts at least 2 years, and in many cases, can be stretched out to three years.
In Redwood City, industrial/quasi commercial space in 2007 was going for $1.50/sq/foot - figure * 200 per employee = $3600/year for office space.
Desk, chairs, cubes, etc.. cost around $1500/employee delivered/installed (Always buy used. Add an extra $600 if you want Aeron Chairs).
I would be interested in seeing if anybody has a soup-nuts assessment for all of the office costs for an employee in 2015 in the valley.