I would prepare a basic plan in which it includes basic length, width and ceiling height dimensions of current bathroom, the idea of what kind of shower, vanity, and tiles would like, and range of materials would be used. These ideas can be a perfectly illustrated with a set of pictures from your online search. That will give detailed ideas of what do you want. In return, you would get a more specific and realistic estimate.

The other easy way is to have an experienced contractor to come visit the site. He would take measurement, discuss all renovation options, and have an onsite estimate. It is normal to charge a fee, generally $150 to $250, for this type of home visit. It is not just an estimate but a in depth home renovation consultation. You should also receive a detail design plan that illustrated with many 3 D renderings images, top view layout, and itemized estimate in writing. Many contractors would reimburse this fee back to you while he/her awarded the job. It’s a valuable design package with your idea in details. You can also bring this to find other contractor for price comparison. This is a good process to interview your future contractor. Evaluate whether the he or she is knowledgeable and qualified enough for the job.