Price of a Bathroom in Maryland. The average cost of a bathroom in Maryland is between $5000 and $16000 depending on the type of materials used. For a small bathroom, the price can reach between $3,000 and $14,000, and for a modern one, the price can go up to $31,000. The price to renovate a bathroom will cost you between $125 and $280 depending on the quality of the materials used or the workmanship.