This building at Spencer Beach Park is typical of how structures were built here in days gone by. A post and pier foundation raised it off the ground, keeping it relatively free from ground crawling bugs and improving air circulation around and into the building. Single board walls and single pane windows were the norm – not much need for insulation here. And it’s all topped by a corrugated iron roof.
This one has fallen into disrepair however, though it’s possible it’s still used for storage of some kind. Time, or a big storm, are likely to end even that option.