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> Real-estate timelines are long. Think thirty year mortgages.

I'm not sure this one applies. The bank holds the thirty-year debt, the builder gets the money immediately.

Not always immediate. Sometimes it's milestone-dependent, which can take months/years.

The builder builds on land that abides the real estate market conditions I describe.

The builder typically is paid via bank loan. The loan is originated only under the bank’s expectation the resulting improvements are mortgageable.