I hired Ian Cunha to design plans and solicit permits for retrofitting my basement into a second unit (requiring underpinning and complete finishing).
Ian was efficient and created a solid design which drew a great response, and earned top rent in our neighbourhood.
Only one issue, which is probably not even his fault... a couple of items which Ian felt weren't necessary ended up being imposed by the building inspector. This cost us more money than we expected. This could just be because our inspector was a bit more strict than most. Regardless, it came as a surprise. (for example - double 5/8th drywall between the two units, resilient channel were not planned for).