Class A office space outside of super expensive cities runs about $35/sqft on average. Employees need about 175 square feet each. So every employee is $6125 more expensive -- but that's only assuming you're renting someplace turnkey, which you probably aren't, so even if you cheap out at an additional $100/sqft ($17,500 per employee) for a custom build-out (one-time cost, but still).
Where is all this money coming from? If your business is perfectly functional remote, with capital costs being what they are, why would you do this?