In the last 90 days, 11 listings have been posted online, which means office spaces most likley are going fast. You'll want to be prepared to make an offer immediately. About 9% of the office spaces in the Ottawa are subleases, so you will probably need to sign a longer term lease with the landlord directly. There aren't many listings below 2,000 square feet available, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around sqft. Most properties in this region are approximately 2 stories. Most buildings in this region were built in 1940 and are Class B.