I do alot of condo's and generally speaking have comps within the project. However, one I am working on now going to have to go nearby projects. The problem is that MLS list sqft from what the original developer said it was. They are always smaller because developer included walls and many are foot thick. This goes back 30 40 years. County has never maintained a record. If I am using comps out of the same project that are the same floor plan I can just report the actual measurements in the sales grid and make a note about why I used a different sqft than what MLS said it was. I actual measurement of many of units in the area over the years so I know a lot of them from prior assignments. but in this particular case two of the comps I don't have actual measurements. The most rational thing tells me to put the MLS sqft in the sales grid for the subject and all the comps as it is what the market is basing there buying decision and most mimics the market, but I think FNMA says otherwise. I have been thinking of just reporting what the subject measures and the comps at what they are reported as in MLS then make a GLA adjustment at a much smaller rate than typical. Which is what the GLA is selling at. Any suggestions or different ways of handling this.