The average cost ranges from $10,000 to $20,000 for a typical 80-100 square foot bathroom with standard-grade fixtures. Adding a 20x20 family room costs $48,000 on average, while adding a 12x12 bedroom costs about $17,300. Such bathroom additions boosted a home’s value by an average of $23,283, giving a 53.9% return on investment. While there are some notable differences when installing a basement bathroom, certain basic elements do not change. When calculating the cost of adding an additional room to your house, a lot depends on what the space will be used for. Adding a bathroom costs anywhere from $50,000 to $90,000 or more. According to a report by Remodeling Magazine, the average cost of adding a bathroom across the nation in 2017 was $43,232. Conversion of existing space vs new addition to the house Costs for a bathroom addition range tremendously depending on where the … How much value does a bathroom remodel add? Overall, prices for a bathroom addition start at around $450-500 per square foot, compared to an average of $200 per sq.ft. The price depends on where it will be located. A bathroom addition includes a new roof, flooring, plumbing and fixtures. Spa-like finishes will price higher. The cost depends on if you are using existing space within the home or building onto the house. How it works. Alright…How much does it cost to build a bathroom in the basement? Materials needed to install a basement include those for the wall frames and drywall. The average for a 100 square foot, spa-like bathroom is over $75,000. When you want multi-room space—bedroom, bathroom, and living room or office, for instance—you build a full-blown addition. A spa-like bathroom may include amenities like freestanding tubs, rain shower heads and smart devices. But before you jump to your dream bathroom, it pays to know how much adding a bathroom costs or the average bathroom renovation cost near you. The cost of adding a bathroom to your home is about $13,338. When buying a home, buyers have come to expect an en suite bathroom and a guest bathroom, but prefer a home that has two or even three bathrooms. Once you’re ready to remodel or add a bathroom, ImproveNet can connect you with up to four bathroom contractors in your town. Here are questions to ask yourself to figure out if the hassle and cost to add a bathroom is worth it for your home. for a regular room. What if you want to put a bathroom in an out-of-the-way part of the home, like the basement? Bathroom Project 101. But how much does it cost to add a bathroom? Labour includes the cost of installing waterproofing, plumbing, tiling, electrical items, gyprocking, painting and the installation of fittings. Material and appliance costs can easily add up when building a new bathroom, so be sure to estimate the cost of every appliance you plan to include in the space. The cost to add a bathroom to your home ranges from $25,000 to $75,000 depending on where it will be, if you install tile and what type, the styles you choose for the tub, shower, vanity and lighting.