3. Expansion
If space is tight, consider expanding the bathroom into space borrowed from adjoining areas. You may be able to incorporate all or part of a closet, hallway, or bedroom. A few extra square feet can make a world of difference.

4. Finding Space
This option involves carving out space from your home’s existing floor plan for a new bathroom. To find the space, look first near rooms that already have plumbing—the kitchen or laundry room, for example. In multistory homes, look to upper level areas above an existing bathroom, kitchen, or laundry room. Often, little nooks can be expanded or hidden spaces opened. Make use of space beneath a staircase, for example, or under the eaves in the attic.

5. Building an Addition
If expanding your current bath or finding space for another just won’t work, you may need to add onto your house. Often a simple extension under a roof overhang can yield enough space for a full bath. Or adding a 3-foot bump-out may create all the space you need. If you’re remodeling on an upper level, think about making attic space usable by building a dormer. Extra bathrooms and powder rooms can be fitted into surprisingly small spaces and can add considerable value to your house.