Quote from @John Warren: @Delroy Watson I would check to see if you can do this the "right" way and make it an ADU.

What specific websites will they advertise your vacant property on?

I have just read through the four years of this thread and found some great tips, thank you to the OP @Thomas Youngman and all the content others have provided.

The last few years have been great for investors/homebuyers who bought pre-con, but looking back to the few years after the 2014/15 boom, this wasn't the case, where many had actually committed to buying a property that wasn't quite worth what they signed up for closer to closing because the appraisal weren't matching the contract price, requiring a cash top-up.

So I'm trying to have a "built to sell" type mentality here. 

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Is this something I have the time to do?  

This will clarify and reinforce what you are reading.

There are a lot of websites that offer the course online, or if you have a college near you, they also typically offer a class that satisfies the pre-licensing requirement.

I’ve run into this many times on deals I acquired and rehabbed utilizing hard money.