If you are thinking of adding a sunroom to your house don't forget to call Hawaiian sunrooms to get a quote. They are not only very competetive but would give design suggestions unique to your needs and your house. The staff is professional and organized. They will work with the city for the permits and have knowlegde about building codes so your project goes by smoothly. The first step is the flooring. Depending on the selection, it takes a week to a month to do the proper flooring. A concrete flooring requires couple of weeks of curing before the sunroom can be installed which is generally manufactured at a factory. The actual sunroom installation takes about a day and accessories like the light, swithces, fans another day. If you are looking for a sunroom, put Hawaiian Sunrooms atleast in your shortlist and most likey they will win your business. Overall a good company to work with.