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Adding a Bathroom to Your Home: Where to start

by Badeloft | October 31, 2018

The bathroom is an essential aspect to any home, be it new or remodeling an older home and subsequently, adding one can do wonders for sprucing up your home. However, before you add a bathroom into your home, it is important to understand the cost associated with such a project and whether it is the right fit for you.  

What’s the average cost of adding a bathroom to your home?

This question is a bit tricky as it will depend on what kind of remodeling you are planning. If you are trying to do work on an existing space or a simple conversion, a bathroom retouch will run anywhere from $3,000-5,000. This cost includes simple wallpaper, paint, flooring and bathtub/shower. Installing a new addition to your home is another matter, as this will increase your price well into the $25,000-30,000 range. Keep in mind that this is generally the starting range as it can easily climb to $40-50,000 depending on the size of the room you are trying to add. The national average for a 100 square foot bathroom is around $75,000, so please keep a close eye on your budget and expenses.

Does adding a bathroom add value to your home?

Adding a bathroom will always increase the value of your home, but how much will largely depend on your location. The average return on the west coast of the United States is around 67 percent. East coast is roughly 47 percent, but this number will change largely on the materials and size of the bathroom you are adding to your home.

Can you add a bathroom anywhere in your house?

The short answer is yes, you can install a bathroom almost anywhere that you can afford it. However, this will largely depend on your plumbing and electrical setup and what style of bathroom you want, which goes into another common question.

7 Common areas for a new bathroom:

Although it is quite tempting to immediately want a new bathroom addition to your home, consider that there are plenty of spaces in your existing home that can be multi-purposed into a decent bath space, therefore, saving you a fair bit of money as entirely new additions to your house can be quite time consuming and heavy on the budget.

Closet

If your house is lacking a large enough room for another bathroom, the closet actually serves as a space friendly alternative. Since many homes come equipped with a walk-in closet, you can simply convert your closet into a bathroom so long as you have roughly 25 square feet. 25 square feet is equivalent to a half bath, which can easily fit a shower, a sink and a toilet, though it might be a little more cozy than a full bath. The negative with this is that full baths add about twice the value to your home whereas half baths only increase your home’s value by roughly 10%. A bathroom of this size on average will run around $3,000.

Hallway

Similar to the idea of a closet, hall bathrooms are another flexible option. If your home has a long hallway with a fair bit of empty space between rooms, a hall bathroom can be ideal. Depending on the size of your space available, this can either be a half or full size bath, just consider the rooms adjacent to it and plan accordingly. For example, a sliding door can help to make this bathroom style more accessible. Just be sure that your utilities can support this bathroom before carving out the area, otherwise you may need to hire a plumber to help support this bathroom. For this style of bathroom, installation should run anywhere from $3,000-5,000 depending on the size.

Bedroom

Another popular choice is adding a bathroom into a master bedroom as they are typically built with more space than is actually utilized. A common idea is to carve out a space in your bedroom to serve as the area for your bathroom. Just be sure that your utilities can support this, otherwise you may need to pay more to install further plumbing and electrical functions. The price for this will generally float around $3,000 as you are adding onto an existing space rather than installing an entirely new bathroom.

Garage

Since most garages are spacious enough to accommodate two cars, there is also ample space to install a bathroom if needed. Since it is ground level and most houses are designed to have the utilities in the basement, this means that a garage bathroom wouldn’t have much issues connecting to the power and water. The only issues that may arise would be accounting for humidity as standard housing code requires a window to provide ventilation so that the moisture does not damage your walls. Installing one of these bathrooms will typically run anywhere from $3,000-5,000 as it is just adding onto your existing area.

Basement

Quite similar to a garage setup, a basement installation would be below ground, which means that condensation and moisture buildup should be considered, especially if you want to add a shower or bath to your bathroom. If you do include a shower in your basement bathroom, make sure it is properly ventilated and the walls have some protective coating, otherwise you will face rot. Since the basement forms a key structural component of your home, this specific location will be a little more price heavy as it is best to consult a professional so that you do not risk any accidental damages to the foundation of your home. Starting rate for these type of projects is $5,000, but can easily climb to $10-15,000.

Under a staircase

Similar to a closet space bathroom, another option for placing your bathroom would be under or above a staircase, as many of these areas have shoe closets or pantry locations. So long as the space is around 25 square feet, your shower, sink and toilet should fit quite easily with at least 1 square foot size window for proper ventilation. The benefits of this location is accessibility as the stairs in a home typically don’t see that much foot traffic and everyone can easily access this bathroom. The average cost of this installation type will start at $3,000 minimum.

Extending an existing bathroom

A popular option would be extending an existing bathroom instead of installing a new one somewhere in your home. The benefits of this would be that you get to keep your existing bathroom design as you would only be expanding the size of your previous bathroom. In addition, any modifications or improvements you make already have an existing framework to build off of which means less stress on your wallet. Depending on the size of a change you want to make, this type of installation will run anywhere from $2,000-5,000+ depending on how large you want your bathroom to be.

Common questions about adding a bathroom

Is there existing water and waste piping near your new bathroom?

Before installing, check to make sure that water flow exists for your new bathroom. If it doesn’t, you may need to hire a professional plumber to sort out your needs and get water flow to the room of your choice.

Do you have enough space for a bathroom?

An important question to consider, as not every space can fit all the bathroom necessities you may require. The starting point for most bathrooms is roughly 25 square feet-this size gives you just enough room for a small bathtub, a toilet and a sink, though keep in mind this size may be too small for you.

Does your city code allow you to add a bathroom in your designated space?

Another tricky subject as every city will be different and it is important for you to consult your nearest authority on the matter. Many cities do not permit alterations to your home or some extensions may be too large for city code without the right permits, so it is best to understand what you can and cannot do to your house before you begin.

Should you have a professional assist with adding a bathroom?

The short answer is yes. In many cases, electrical and plumbing alterations must be handled by a trained professional. If you are confident of your abilities and have the requisite experience, then some steps can be DIY, but ultimately, utilities must be handled by a professional.

Adding a bathroom to your home can help to increase the value of your home, but it would be best to consult a professional to assess your situation to prevent any unnecessary building mishaps that may occur and further costs as well.  

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