Your other options are leasing a space to suit your needs now. Leasing is 100% deductible of course. If you buy the condo as a separate investment entity (set up an LLC) to rent it to company you will gain the tax befits and equity build-up inherent in investment real estate.
The factors that mitigate your decision to buy are;
Will you outgrow the space in a short period of time?
When it comes time to sell, where will the business cycle and real estate market be?
When you do outgrow the space you need to remember that there ought to be other business that are in the same situation as you are in now. Even if you find yourself outgrowing it as a business, you also have the advantage of leasing it to the next business rather than selling it, which becomes a tax decision more than a business one.
I survived the early '80's real estate bust by doing commercial leasing. It was much less subject to the vagaries presented by 18% interest rates. I think your investment in the condo is more prudent than you realize.