The secret to building a house in terrible weather is to finish the foundation and lift the house's plinth off the ground before the start of a long rainy season or weather. However, in wet areas, it is possible that not a single day goes by without rain. If this is the case, you will need to finish the foundation even though you can't work on it for several months at a time. Also, be sure to check with your local building department about how many floor joists there should be under a roof before you pour the footings. Some communities require that you specify the number of floor joists you intend to use when you apply for a building permit. Others may ask for proof that you've specified the correct number (such as a letter from the manufacturer), but still require you to get them approved by a building inspector before they'll issue the permit. As long as you follow these simple steps, you should be able to build a house in terrible weather. Now all you have to do is wait for the next storm!