Most listings are in the $20's per square foot per year. The Margate region is going through a a boost in rates. In the last 3 months, the median rate rose $6 per sqft per year. That's a 26% increase in rent.
Compared to the rest of the Gold Coast market, the Margate region has smaller rates, so you should have no trouble finding a great deal in this depreciated region.
In the last 90 days, 8 listings have been posted online, which means spaces most likley are leasing quickly. You'll want to be prepared to make an offer immediately. 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 370 sqft. Most properties in this area are close to 1 stories. Most buildings in this area were built in 1984 and are Class B.