Scrape off the seaward row of houses, let the sand under them become the new beach. Neighbors across the street now get their turn at owning an oceanfront view. Repeat as required.
And then we can all look forward to walking on a sandy beach in our old age. Just a small matter of politics to make it so ...
Build 20-30m further inlands. Perhaps also plant some trees or bushes at the end of the beach.
But no, that won't do. The rich folks need to have the sea at pissing distance.
I own a condo at one of the properties in the article. The building and surrounding buildings are working with the county to help restore the beach. In our case, pockets of sand were found just offshore and will be brought in along with some stabilizing structures to widen the beach by up to 150 feet. The buildings (specifically our AOAOs) are responsible for the cost.
Natural sand dunes with native vegetation are the best way, large erosion events will always happen and these limit the extent and provide a buffer for sand to be restored. I don't think you can have building on the oceanfront and keep beaches long term though.
Probably all three, if you include sand pumping. (I guess that's beach reconstruction said another way)
Hawaii might be different to the continental shelf abutting changes i see here in Oz. Its driven here by a northward sand flow, combined with erosion. Sea walls and groynes and channel guides and dredging for river access are a dastardly trio which wreck the natural beach as does building on sand dunes.
https://www.surfrider.org/search/results/710d4c63582a903c67a...
Scrape off the seaward row of houses, let the sand under them become the new beach. Neighbors across the street now get their turn at owning an oceanfront view. Repeat as required.
And then we can all look forward to walking on a sandy beach in our old age. Just a small matter of politics to make it so ...