I wrote a letter to the HOA yesterday explaining why the door was needed, how security would be very tight, and how the HOA itself could potentially be responsible for any ADA fines/penalties if they are found to the "barrier to access" for ADA as they control the lobby.We have a tenant lined up and obviously this is causing a major issue. 

We specialize in helping investors access opportunities in both residential and commercial markets, leveraging our network and industry knowledge to identify high-potential deals.

Both @Nathan Gesner and @Lauren Stark have provided valuable insights on this.One potential path for you is to join an established team to gain experience.

OP, keep in mind not having access to heating and sharing same water heater and etc will require an easygoing tenant in the nextgen.

I’m planning to start by buying in Buffalo to gain experience and learn the ropes.

LoL So really trying to learn what I can, gain some capital, and see what my options could be for the year.I'd like turnkey and long term renters in place, as that seems like a good way to get started as a rookie. 

Everything was progressing smoothly until I met the appraiser to provide access to the property.Right away, I sensed something was off.

And you would get to indefinitely defer all tax on the gain from the sale.

Certainly nothing ground-breaking in terms of ideas here, however I'll be very hands on (and on site) during the process to make sure that every step of the way is executed to a high standard and very carefully.Once I've hopefully developed a successful track record and gained experience, my next goal would be to move on to commercial assets (think multi-family, industrial etc) so that I can leverage my existing investor network and real estate knowledge to raise 3rd party equity and take on bigger projects.

Starting sooner rather than later allows you to benefit from long-term appreciation, build equity, and gain hands-on experience, even with a smaller property.