The interesting aspect of this is that so far buyers don't seem to recognize that what each successive buyer will be both accepting more risk, hence paying more and more for insurance, on a property that will be worth less when it comes time to sell. Coastal property is very much now like milk and other perishable items. It has a sell by date stamped on it. Its just that the dates are of relatively longer duration, on the order of a few generations.
Given human nature, this musical chairs nature of the coastal property business won't make itself evident to most for another 25-50 years or so. By then with higher temperatures and hence more energy and moisture in the air and consequently more violent and more frequent storms this risks will be apparent to most. However, given that the wealthy are the primary buyers of coastal real estate, form them it's more a question of disposable income. Also for them, it is likely that much if not nearly all of these costs will be passed on to taxpayers and consumers generally, as the buy politicians to shift the tax burden from the wealthy onto the poor and the dwindling middle class and they simply pass the costs on in the form of higher prices in the businesses that they own and control.
The biggest impact will be in cities like Miami and parts of New Jersey, and large stretches of the Eastern Seaboard and Gulf of Mexico, where the elevations are so uniformly low over considerable expanses. There all properties will be effected and both rich and poor will be forced to migrate elsewhere. The rich should be ok as they may already have property elsewhere or resources that they can use to purchase other properties even as their seaside properties become worthless. The poor on the other hand will be forced to face conditions similar to those now faced by indigents in Bangladesh, too poor to stay and too poor to move. This will probably be the big unexpected aspect of sea level rise, the political and economic instability that it creates by making so many to lose it all, with little political or economic recourse. Subsequent generations will suffer disproportionately on the individual level as families that might once have had property that could be passed onto subsequent generations in the form of inheritance will be left with greatly diminished inheritance.
What few recognize is that given free energy considerations and the consequent fact that once a carbon dioxide molecule is generated from fossil fuels, it stays essentially as a permanent fixture in the atmosphere for on average about 100 years. Given the fact that it thus accumulates, the process is exponential, but the consequences time-lagged so that we have yet to experience the effect of carbon dioxide put into the atmosphere over the past 50 years, an amount far greater than the previous 50. If one extrapolates from previous geological periods and looks at rates of sea-level rise at various locations, one sees spurts of rising over very short time periods, several meter rises over a hundred year period in some cases (remember that 5+ inches/100 year is a global average). Consequently, there is far more "coastal property" than most people recognize.
Unfortunately for those on in the US living on the Western Atlantic, the effects of Greenland ice melt on sea level rise will be greatest there rather than immediately adjacent to Greenland because of the fact that the oceans are in motion and the differential between isostatic adjustment and water mass position forces the maximum peaks southward, but primarily over the Western rather than Eastern Atlantic Ocean. Consequently, those rising tides will be flooding Wall Street within the next few hundred years with near certainty. That's a lot of expensive real estate that will need to be liquidated (in more ways than one) in a relatively short period of time.