If you've ever lived in a house that doesn't have enough bathrooms, then you know firsthand how valuable these rooms are to potential buyers. Updating or adding bathrooms, especially master baths, will add considerable value to your house. A master suite with his and her sinks, spacious showers and plenty of square footage are what buyers are looking for. Added amenities such as heated floors, steam showers and whirlpool tubs will serve you well, and ample storage is a must. Traditional ceramic tile floors are preferred over wood flooring or linoleum because they handle water better. Half-baths can be created out of small closets or under eaves. If you want to go green, low-flow toilets and skylights are good choices. Keep your design in the same period as the rest of your house. You can still have modern amenities while retaining a classic look. Bungalows command subway tile and pedestal sinks, while a modern bathroom may contain more wood and neutral-colored tile. Don't be shy when it comes to spending -- the average bathroom remodel can get you back the majority of your investment.