I continued paying what I had paid before, with the additional money purely going to principal.The recast to a lower amount was purely to reduce my committed monthly payment to a point that I could get my property to cash flow if I had to move out (job loss, etc).

If you want to provide your property's address, I can give you some additional feedback. 

Additional BZD $100 if they had to replace the concrete markers. 

This combined with my new boss giving me additional responsibilities (how dare he...) and the support of my wife prompted me to take the plunge. 

Hi Shane,Congrats on the new addition to your family!

Are there additional factors you think are worth considering?

It is currently a glorified finished attic with little room- Use addition and raise it up and extend it to the side of the home for more finished space and room for deck, washer/dryer room etc- Make the living space as functional as possible with the added sqft- Add outside living structures like deckThis is a fairly wealthily area and I want to maximize my ROIWhat are some things you recommend for a large scale project like this and what are some hurdles ?

In additional to conducting educational workshops, I also write blogposts for their websites.

My original SFR was 1100sf and I added 2 units: an 800sf SB9 unit and a 750sf ADU (converted garage plus addition).

Thank you for the additional info.