Be careful when renovating attics and basement. Especially if you are adding a bedroom.Usually appraisers do not consider rooms in the attic bedrooms for many reasons, so I would say to be financially cautious and make sure you can get your money back when it is time to sell. Anotherwords you usually can't add another bedroom to your appraisal, if the bedroom is in the attic or basement. In this current market I would get the home evaluated by a trusted realtor or a quick appraisal and make sure your renovations make good financial sense. I can't tell you how many times I walked into a home and the seller has put a huge amount of money into a renovation which adds little or no value. Sometimes it makes more sense to get another home, if you can't get your money back. I good rule of thumb is the 10% rule. If you buy a $500,000 home and it needs more than $50,000 in renovations , then you seek professional advice before continuing. Best of luck.