A bill to provide Federal assistance under certain housing programs for more dwelling units which are heated or cooled by solar energy.

Directs the Administrators of specified Federal housing programs to increase by not more than ten percent any amount which represents a limitation on the amount of a loan that may be made on a single or multi-family dwelling unit or a limitation on the amount of the principal obligation of a mortgage on such unit, if such increase represents the increase in the cost of the dwelling unit which may be attributed to the unit's being heated or cooled by solar energy.