Your disability payments should not be affected. SSD has to do with income not assets. Unfortunately, your SSI will most probably be affected. Right now, your home is subject to an exemption under SSI which is why you were approved for SSI payments in the first place. However, upon sale, your home will be converted to a cash asset and, depending on the amount that you net upon sale, it may disqualify you from receiving SSI.
Here is a link to a site that will explain some of this: http://www.socialsecurity.gov/ssi/ . But it can get complicated, so you should stop by your nearest Social Security office to go over all of this with them.
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