I would think that anyone making consistent capital gains, would be classified as trading and thus probably taxable. Even selling a house every year would in most jurisdictions be taxable income. IMO
yes, if trading and making regular gains, they may accept that. Generally a gain on the sale of a primary residence is not going to be considered, IMO. However, if it was taxed and you can show two years tax returns that would strengthen your case. It's a minefield. And any gains in a trust account will not be considered.
They will want to see 2 years of passive income, and IMO a one off capital gain will not be considered income. However as there is no upfront fee, why not try it and let us know how it goes. I'm sure there would be many in similar circumstances..
Basically, Alex, as you may have gathered there are many keyboard warriors that say it can be done, as they read about it somewhere x months / years ago. Bottom line, the agents are saying they can't help. When the agents can't get you a bank account then you have close to zero chance. Best of luck .