I would say that the fact is 'saving' is singular and 'savings' is plural. This dictates the verb that follows. You could say A saving of $20 is ... or Savings of $20 are ...
A basement bathroom can be built for about $15,200, Fred estimates. Of that, plumbing is the largest component. These prices are based on costs for a small bath measuring about 6 by 8 feet, with 8-foot ceilings. However, many basements are limited to a 7-foot ceiling. Another potential cost-saving location for a new bathroom is the attic.
Basement Bathroom Costs. When adding an extra bathroom to a house, especially in a basement, it is less expensive to have the fixtures installed on one âwet wallâ - that is the one with the current piping. Although this is not always your first choice for your desired bathroom layout, it does save a great deal in plumbing costs.