1) Think about the layout in your existing bathroom and decide which are the most serious problems you should fix. 

2) Electrical outlets and switches are usually much easier to move than plumbing pipes, provided there is easy access to the wiring.If you think that your current layout is livable, leaving the mechanical systems as they are will mean you will have more budget for upgrading fixtures and fittings.

3) Consider your lighting arrangement.You should use strong lighting over any mirrors (a 60W strip bulb should suffice).For the rest of the bathroom it is likely that you should require 3.3.5-4 Watts of lighting per square foot of floor space.

4) Make a detailed drawing of your existing bathroom layout and design.  Use a sheet of graph paper or CAD software if you have it.Include all wall details and don't forget to include the location of doors and windows.Make note of the width and length of your floor cabinets and bathtub as well as the distance from the nearest wall to the centre of the toilet.Note also the locations of all electrical outlets as well as the switches and fixtures.

5) Gather up style ideas and make notes.Decide which fixtures that you will want in your new bathroom.Determine colours, the finish materials, lighting, storage details and accessories.Work out a layout that will meet local clearance requirements, fits you needs and will make efficient use of the space you have.

6)  Draw a floor plan of your proposed bathroom.  Again, if you have CAD bathroom design software available then make use of it.You may also decide to get it checked by a professional designer to get any additional ideas.

Post from: Interior Design Online

Designing Your Perfect Bathroom