The typical asking rate per listing is in the $10's per square foot per year. The Wellington region is going through a a rise in rates. In the last 3 months, the median rate rose $15 per sqft per year. That's a Inf% rise in rent.
In the last 90 days, 2 listings have been listed, which means new listings are probably going fast. You'll want to be prepared to tour spaces as quick as possible. There aren't many listings below 2,000 square feet posted, so finding a space for a small business might be tough.
The standard measurement for office space in this area is around 1,210 sqft. Most properties in this region are close to 2 floors. Most buildings in this market were built in 1901.