Basement Bathroom Plumbing Rough in Cost

The average price for rough in a basement bathroom can fall between $5k to approximately $20k. However, the final cost may vary depending on several factors. Read on to get more informed on Basement Bathroom Plumbing Rough in Cost and the various factors that come into play!

Factors That Determine the Basement Bathroom Plumbing Rough in Cost

Below are the key factors that influence the overall cost of a basement bathroom plumbing system:

1. Sewage Line Distance

The first thing that you need to know is how far or close your bathroom is from the major sewer line, and if you are going down into the basement, what is the level of the sewer line?

The best-case situation is when the main sewer line goes beneath your basement floor, and it’s set to run at the lowest level. If that’s the case, it will be as easy as digging a hole in the floor of your basement to run pipes from the basement and connecting them to the main sewer line.

The worst scenario is that the main sewer line that goes out to the street is at an elevation above your bathroom’s floor. Typically, your sewer line is fed by gravity. However, you can’t run a new sewage line up the basement if the sewage has to go up to get drained out. It may be necessary for you to purchase and install an upflush toilet system that pumps and drives sewage out of the main line. It’s going to be quite expensive.

2. Plumbing Pipes

Every plumbing material has its advantages and disadvantages at varying costs. It’s obvious for most house owners to purchase different types of pipes when it’s time to remodel their houses. Thus, price is among the key factors determining the type of pipe you want.

Basement Bathroom Plumbing Rough in Cost
A plumber connecting pipes

Here are the different pipes you may consider depending on your budget:

  • Copper Pipes – A good thing about copper pipes is that they are resistant to rust and highly durable. Copper pipes can serve you for over 50 years, provided there is proper maintenance. Prices for copper pipes may range from $3 to $8 per foot.
  • CPVC Pipes – If copper pipes don’t suit your budget, you can buy CPVC pipes. These pipes are also stain-resistant and have the potential to withstand high water pressure and heat. For rough-in plumbing CPVC pipes, you would spend between $0.50-$1 per foot.
  • PEX Pipes – PEX pipes need fewer connectors than their counterpart copper pipes. These pipes can withstand very low temperatures. Furthermore, they are corrosion-resistant and flexible. You can get PEX pipes at a price between $0.40-$2 per foot.

3. House Size      

The size of your house will determine the space between each restroom and the number of pipes you need. If your house covers about 2,000 square feet and has three washrooms, it will cost you more than a house with 1,250 square feet and features fewer bathrooms.

3. Number Of Restrooms

The total basement bathroom plumbing rough in cost may vary depending on how many bathrooms you have at your home.

Here is a rough estimation of what you would actually spend.

Number of BathroomsApproximate Cost
1$1,500 – $3,000
2$3,000 – $6,000
3$4,500 – $9,000
4$6,000 – $12,000

4. Fittings And Fixtures

Unsurprisingly, there are a lot of many fixtures, fittings, and features that you may need to customize when installing a basement commode.

For instance, you may require installing a sink, shower, or bath while you install your basement toilet. So, these small but essential things may increase the amount of money you need.

5. Labor Cost

Lastly, it would be best if you considered labor. The price of hiring a licensed and experienced plumber who might charge you per hour may range between $40-$75. However, other professionals may charge you Per day between $320-$600.


How can you install a basement bathroom without a rough-in?

Drainage is the biggest challenge. It may take several days to install everything necessary, but if you have a basement, you can install a unique macerating toilet that flushes waste upwards.

How long does it take for a professional to rough in a basement bathroom?

Sometimes it takes several days to install the plumbing system in your basement. Although most new homes require only 3-5 days to complete the plumbing work, some circumstances can cause the process to take longer.

What is the difficulty level of installing a basement bathroom?

Generally, installing a bathroom in your basement is much easier if you hire a licensed and experienced professional. However, if you have no hurry, a DIY approach can help lower costs.

Final Verdict

As you can see, basement bathroom plumbing rough-in cost can vary greatly depending on several essential factors outlined above. We recommend that you don’t go beyond what you have intended to spend. But if you are well prepared, why not pay to get the most fabulous basement bathroom décor in your house?

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