Yes, it will be slow. My family has a guest house on the beach. It's on short (5 ft) hill about 30 ft back from the ocean. The back sits on the hill and the fro

Yes, it will be slow. My family has a guest house on the beach. It's on short (5 ft) hill about 30 ft back from the ocean. The back sits on the hill and the front is help up by support beams. The yard is barely (1-2ft) above the average high tide mark. I was visiting during a storm and was in the guest house looking out of the window and it dawned on me that if (when) we get a bad-enough storm during a high-neap-tide, the support beams holding up the front room be washed ou. It would only be partial damage, and most people would probably consider it a "once in a 100 year storm", so I'm sure the damage would be repaired. With sea level rise, a 1:100 year storm will quickly become more like 1:50 or less, then 1:20, then 1:10, etc. At some point, we (or future owners) will give up rebuilding. If you only want a small get-away cottage on the water, then I'm sure sea level rise will be slow enough that you'll be fine. If you want a home on the water that you can pass onto your kids or grand-kids as a family investment, then I'd stay away.... or at least, consider the geology/topography/distance to the water.