Absolutely doable in Fenwick, there's a number of duplex's on the ocean off Bunting Ave. They are normally around $3500-$4000. There's also Admiral's Ridge, which is on the other side of bunting, so no highway to cross, but not directly on the ocean. Bonus is that it's a townhouse complex so there's a decent pool. It'll be a little cheaper, I think most have 3 bedrooms.