A thick concrete wall can keep your house cool. Steel will make your house hot unless you insulated the walls well. Insulated walls don't work very well in a flood zone. When they get wet, you need to tear them apart. You will need concrete for the foundation most likely unless you are driving steel pylons. There is probably a combination of the two that will suit your needs best. It would be helpful to know what you want to achieve by using steel. There are advantages to both. Steel floors can be cantilevered further. It is easier to make bigger window openings. Floor and roof spans can be lighter and quicker to build with steel, but the roof will get hotter and therefore need good insulation and need to be well ventilated. These are just general assumptions of certain building practices so that you know what to ask people where you live. The practices and resources vary from place to place and building something for a specific purpose can change the benefits of one material or the other. My best guess is that you will probably want to use both.

Leather sofas can really dominate the room and can give an overall cold feeling. I would add some earthy elements, like a wood coffee table with glass or metal. Go to Restoration Hardware's website and look at their sofa room scenes. And I'm sorry I think the art is too harsh for the room. That's all your eye goes to in the room. too overpowering. I would look for something softer or maybe a cool mirror and I would add color to the room with pillows and some colorful lamps. I also think woven blinds would look great. They add warmth and give a finished look. The color of your window treatments should contrast your wall color a bit, not match it or else it starts to look generic and blah.. You have warm walls, warm floors and the woven blinds, like Hunter Douglas brand would pull it all together for you.

Thanks Emmeline & Najeebah for your replies. Its a beautiful cinnamon tree. Najeebah, its a well growing tree..I would like to retain it at the current spot and have the living room adjoining it. According to the house plan, there would be only 4'depth from the wall to the main house. N since we live in a tropical region, i would not want the tree to be fully indoor. Mosquitoes & other small insects could find their way into the living area during the monsoon season. How can i show its beauty?Pls advise

A rule of thumb is that the distance between the house and a eucalyptus should be 2/3 the height of the tree. So if the tree is maybe 45 feet, you'd want the house to be a little over 29 feet away. As well as any new root growth that could affect your house, cutting into a root system compromises the stability of the tree. Also, even if the existing roots are deep, driving over the area with heavy construction machinery could compact the soil enough to affect the health of the tree. That's not to say that you shouldn't try, just be aware in case it becomes necessary to cut the tree down later. Good luck and enjoy your new home!