I will say no from a renter's experience. 

A quick call to your zoning attorney or architect should confirm that adding that garden unit is possible without needing any changes, exceptions, etc. under the current zoning.

Investments are investments- I think everyone understands that there is no guarantee for the return, but many potential benefits including the payout coming tax-free.

.” - Warren Buffett, 9/8/2008Fannie and Freddie no longer do fixed-income arbitrage, as it served no credible purpose for the mortgage market.

You shouldn’t have to go to a second platform to verify a booking.I’m happy to jump on a call to review your current occupancy compared to the market, as well as “the anatomy of a statement.”

If you have no money for down payment, you may need to rethink your plan and start saving now. 

Also, your architect will work with the survey you just completed in #1 and ensure there are no issues in building a structure and meeting parking requirements etc.

My question is: If the HOA changes the bylaws to ban smoking (which they plan to vote on), and the lease held by the smoking tenant only specifies no smoking "within the unit," is there any legal recourse for the smoking tenant?

It's not a direct answer to your question, but it's very likely you have no contractual leg to stand on.

That's a mine field no one on here is qualified to answer. ;) But your rental is doing well.