Crowdfunding withing the US residents has a lot of regulation and that's the only barrier as far as the custody of crypto even though difficult not impossible but the actual asset t's risky also because it is a volatile asset and any cryptocurrency therefore for US residents unnecessary to raise funds through (unless using stable coins) crypto since the US dollar is what most end seller would require.

Constructing new homes and selling them is extremely difficult and challenging.

So many unknowns and very difficult to base it on average sq ft pricing.

It’s possible, but I’m sure the city would make it more difficult than it has to be.

I learned that investing in real estate is not as difficult as most people make it out to be.

Quote from @David Contreras: How difficult is dividing land that used to be separate, but is now a large lot as a result of a voluntary merger by the previous owner ? 

It protects you from cash flow and also provides leverage with difficult tenants. 

But I also doubt this requirement is a gentle no, and will make it difficult to rent.

The click on / locking type seems like what most investors use, but repairs seem difficult without having to re-do a large area. 

this is exceptionally difficult to do.