Triplex conversion by adding a legal basement

[Sung Kim]

Hello BP,

I purchased my first investment property in Brantford, ON.

It is a legal duplex, a 3 story detached house. The upper unit (2nd and 3rd floor) is approx 1500sqft and the lower unit (ground floor) is approx. 1000sqft. There is an additional 1000sqft of basement space a 700 of which is already finished but outdated. 

What I would like to understand is if anyone has had experience in converting an existing duplex to triplex in Brantford or other areas. I would like to convert the basement space into a legal basement apartment making this property a 3 unit property. 

Having connected with some people, I understand that my next step would be to work on getting a drawing. However, it seems that I would need to find and work with somebody that could come up with a drawing for the space and get the necessary permit with the city of Brantford. 

Does anyone have experience in a conversion like this? 

What would you suggest as the next steps?

Would you recommend anyone to help with my situation? 

Look forward to hearing your advice. 

Thanks, 
Sung