What Is a Half-Bath?
A half-bath, also called a powder room or a guest bath, is a bathroom that’s typically located on the main floor of a home near common or public areas, like the entryway or living room, that’s easily accessible. Half-baths contain two of the four standard bathroom fixtures: a toilet and a sink.
Average Cost to Remodel a Half-Bath
The cost to remodel a half-bath is between $1,500 and $15,000, with $1,500 being a budget-friendly remodel and $15,000 being a high-end remodel. However, the cost depends on several factors, including the size of the bathroom, the scope of the work, the quality of the materials, and labor costs if you use a professional for more complex work. Typically, the average cost would fall somewhere between $2,500 and $5,000 for a DIY remodel.
The average half-bathroom size is 18 to 32 square feet, although some half-baths can be as small as 15 square feet. Typical half-bathrooms are 3 to 4 feet wide and 6 to 8 feet wide. However, there are other possible dimensions, including:
- 3 feet by 5 feet
- 4 feet by 4 feet
- 4 feet by 5 feet
- 4 feet by 6 feet
- 4 feet by 8 feet
- 6 feet by 3 feet
When remodeling a half-bath, expect some return on your investment. The amount depends on multiple factors like the materials used, the bathroom style, the location and the overall real estate market at the time of sale. However, a remodeled bathroom makes it an attractive selling point to potential buyers. It’s one of the smartest home upgrades you can make. A half-bath remodel cost typically involves updating the essential fixtures, including:
- Replacing the toilet
- Replacing the sink and/or countertop
- Adding or replacing a vanity
- Updating the mirror
- Updating light fixtures
- Painting, wallpapering or tiling the walls
- Replacing the flooring
Remodeling could also include altering the bathroom's layout or structure, like relocating the plumbing fixtures or electrical outlets. However, a budget-friendly remodel may mean opting to keep the plumbing and structure as they are to save money and finding other ways to stay on budget. A half-bath renovation cost on the high end would include updating all the above as well as:
- Using high-end finishes
- Reconfiguring plumbing fixtures
- Adding electrical outlets
- Adding a window or skylight
- Making other structural changes as needed (moving a window or door location, etc.)
Think about everything you want to include in your renovation and be realistic about what you can budget for. Knowing what you want to update, add/or replace gives you an idea of where to start with setting a budget. Don’t forget to factor in the cost of labor if there are parts of the project would require you to hire a contractor (a plumber, electrician, etc.).
Preparing to Remodel a Half-Bathroom
As you prepare for your half-bath remodel, you should first have a clear understanding of the scope of the job. While a half-bathroom may be small, there is still a lot to be done in a remodel. There are essential steps you should take before the remodeling begins.
- Establish a Budget: This helps you prioritize expenses and make realistic choices based on your finances. When budgeting, consider the cost of key components like materials, permit fees and contingencies for unexpected expenses.
- Assess the Current Space: Based on the state of the existing space, determine if you’re going to reconfigure the half-bath. Are there plumbing or electrical issues that you want to address? Take note of any features or fixtures you want to add, remove or relocate.
- Research, Plan and Design: Research different themes, styles and ideas from our bathroom library, magazines, TV shows, etc. Choose designs, materials, colors, etc. Plan for adequate storage, ventilation and lighting. Also plan for future considerations such as accessibility and ease of movement in later years or if you plan to age in place.
- Determine the Scope of Work: Depending on your intended plans and the amount of work you foresee taking place, figure out what the scope of the work (SOW) will be. Structural changes, electrical, plumbing and other specialized work may need to be done by professionals, so these tasks need to be factored into the SOW (and the budget).
- Determine What Permits and Inspections You Need: Find out what the local building codes are and obtain the necessary permits you need to stay in compliance. Plan for inspections as necessary. To the extent you plan to take on any of the remodel as a DIY (do-it-yourself) project, ensure you’re aware of any local rules, including Homeowners Association (HOA) covenants, governing your remodel.
- Hire Professionals, if Needed: As a DIYer, there may be some tasks that you’re not skilled at or not comfortable doing. Don’t hesitate to contact a contractor for these tasks. They’re trained to do the work and their finished product is more likely to pass the required inspection upon completion.
Additional Considerations.
- Once you decide on the materials you’re going to purchase, ensure that you purchase them well in advance — ideally four to eight weeks ahead of time. This allows time for backorders, potential design changes and helps ensure items arrive on time.
- While there is no way to know what emergencies may occur throughout the remodeling process, it’s always good to be prepared financially, so have a contingency cushion in your budget.
- Consider whether certain features will appeal to potential buyers and how the remodel will impact the overall value of your home should you decide to sell.
- Plan your remodel during a time that best works for your household. It takes approximately 1 to 2 weeks for a simple remodel of a half-bath, and three to four weeks for a remodel when there are structural changes involved. Factor that time into your calendar. Will you have relatives visiting then? Are you hosting an event at your home? Are you planning to be away from home?
The Cost of Adding a Half-Bathroom
As discussed earlier, the average cost to remodel a half-bath is between $1,500 and $15,000 with the average cost being between $2,500 and $5,000. The cost of adding a half-bathroom is similar in cost to remodeling. Most homeowners will spend between $4,000 and $12,000, however, the average cost is $6,500. This depends on many factors and the cost could go from $3,800 on the low end to $17,000 on the high end.
The Cost of Adding a Shower to a Half-Bath
Most half-baths only have a sink and toilet. Although it’s rare, you may occasionally find a half-bath with a shower. The cost of adding a shower to a half-bath is between $3,000 and $12,500. You’ll need to add new plumbing, walls and fixtures. This price range can vary and depends on factors like the shower size, type, materials and customizations.
Adding a shower to a half-bath increases the value of your home and changes your half- bath to a three-quarter bath. A three-quarter bath is a bathroom that contains three of the four essential elements: a sink, toilet and either a shower or a tub. It’s a space saving alternative and more common than a full bath.
What’s Trending in Half-Bathrooms in 2025
Design trends come and go, but classics are timeless for a reason. They reflect an enduring beauty, quality and functionality that resonates over time. When considering your half-bath remodel, choose items and concepts that have continued to age well.
For a minimalist aesthetic, look for natural, subtle hues that create a sense of balance. Soft neutrals and nature-inspired tones evoke a sense of calm. Introduce texture with wood and natural stone tiles for warmth and an inviting atmosphere.
Accent pieces can reinforce balance, as in this bathroom (right). A marble wall is the backdrop for a simple round mirror and vanity lights. The gorgeous marble sink and countertop add an elegant touch while two wooden accent slats on either side of the mirror bring symmetry. Each piece in this bathroom plays a key role in bringing this look together.
If bold is more to your liking, choose wallpaper that adds depth and personality. For lighting, opt for something unique and unexpected like a bathroom-rated chandelier or pendant light. You can also take advantage of technology with smart-compatible mirrors, touchless sink faucets and even smart toilets.
Remodeling Your Half-Bath
If you’ve been contemplating remodeling your half-bath, make sure you do your homework first. For your best chance at a smooth finish, start your preparation well in advance. For all your tool and material needs, Lowe’s is the place to come. Shop online at Lowes.com or visit your local store and talk with a Red Vest associate who will help you with everything you need.
Even the small projects can sometimes be overwhelming. So, whether you’re looking for a bathroom refresh, a minor half-bath remodel or a major remodel, Lowe’s is here to help. And if you don’t have time to do the work, see which bathroom installation services Lowe’s offers in your area.