So much can happen on an exterior...trim, exposed rafters, doors, windows, siding, stone, brick, stucco, roofing, gutters and downspouts....hire an architect or a design/build firm to help answer these questions prior to building....like hiring an interior designer for help with furniture, these professionals will help decide the style of the exterior of the house and how that style interacts with the function of the house.

How do you decorate your place, what kind of style, colors, and feelings? That will greatly influence the type of door you might want. Also, think of your budget, and whether you want to install it yourself or hire a professional (you don't need to tell us, just keep that in mind). Then look around Houzz, in the products page, they have lots of interior sliding doors and hinged ones, from elegant frosted glass in a dark wood frame, to rustic reclaimed wood planks. You may not want to purchase that exact model, but it might give you a better idea of what would fulfill your airflow needs without sacrificing style.

The most important study for you will be the tide levels study & the type of soil that is present on the site. Steel will be the last option if you have no budget constraints but it have to be treated well to survive the water corrosion. You should go for concrete stilts or stone masonry piers but designed in such a manner that the water flow is not obstructed(minimum obstruction) so that the structure you build faces minimum obstruction from the natural habitat(water flow) around. Do keep in mind that such structure can be highly vulnerable for water flooding so be intelligent with the design criteria.

Hi Hema, Kindly mention the size of your plot. Also note that there are a lot of things to be considered before any final estimation. Kindly mention a proper design brief and location of the project. Check out our profile for some selected works. We provide Architecture design, Interior Design and Turnkey services. In case you are interested, feel free to connect. Thanks & Regards, Eye for Design