As for a tax professional - you can find those under the "Build Your Team" tab in the Navigation bar of the site. 

Both of them are by the bedroom and this new one I just completed a master bedroom build added on to the back of the house with a private entrance for myself so I’m currently renting out the other 3 beds.Which cost me thousands more than I expected due to contractors not performing like I had expected etc etc.

My W2 income is >$550k/year, if I build an RV/Boat storage facility, will my storage business expenses/losses be able to reduce my W2 taxable income? 

That's far from a definitive answer because its an owner occupant and a single family, but I would imagine if you e-mail the house/building department they should be able to give you a firm answer.  

Look at ways to pay, build a team, start with something small, check everything carefully, move forward, and keep going even when it's hard.Begin with a small property or an easy project, aiming to learn by doing and slowly grow your holdings.

If I use seller financing to own a property, do I build equity even if I sell before the mortgage is paid off?

I was already a licensed broker for a long time selling real estate, and as I began managing buildings, I had to get my managing broker's license. 

You may want to see if the limit for the Building increased or if it is just a straight rate increase. 

While every effort has been made to ensure the accuracy and reliability of the information, the real estate market is subject to change due to various factors such as economic conditions, interest rates, and market demand.

Many things go wrong in construction, some of which are unavoidable, how the contractor handles those issues is paramount and speaks volumes to their abilities (or lack there of in the cases above).There are no short cuts to construction or dealing with the building and safety/planning departments in cities, they are slower than turtles in almost all cases.