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plumbing cost for new house missoula mt

Homeowners Guide to Plumbing Cost for a New House

Many families dream of building their own home, where they have complete creative control, and each room is exactly as it was envisioned. Building a home from scratch is a wonderful investment. However, new-build construction can be disastrous without proper planning and budgeting.

A vital part of any new home is the plumbing. All steps should be done correctly and within your budget, from rough-in plumbing to finish plumbing. This ensures a smooth and successful building process and peace of mind. 

This also presents the perfect opportunity to install various types of heating systems into the foundation of the home. This can include anything from radiant heat flooring to snow melt systems.

If you’re wondering about the typical plumbing cost for a new house, we’ve outlined everything here in this guide. 

How much does plumbing typically cost for a new house? 

The national average for new construction plumbing cost per square foot is about $4.50/sqft.

The typical cost of plumbing rough-in, finish, or both will depend on several factors, such as the chosen materials, the number of bathrooms, and the square footage of your home. 

The average new construction plumbing rough-in cost for a home with 2,000 square feet and two to three bathrooms is anywhere from $8,000 to $12,000. 

However, a home’s square footing is only one factor affecting plumbing costs and one of the smaller factors at that. The most significant component to consider when considering the plumbing costs for newer homes is how far apart your bathrooms are. The further apart they are, the more complex and expensive the plumbing will be.

The square footage of your house can provide a general idea of the cost of your plumbing, as the higher the square footage, the more likely it is that your bathrooms are further apart.

If your bathrooms are on different stories of your home, this too will increase the cost as installing plumbing for multiple levels is more complex. 

A note for mobile homes

The cost of plumbing for mobile homeowners is significantly cheaper as the plumbing is in the flooring instead of behind the walls. 

By having the plumbing in the floors, the plumbing installation process is simpler and less expensive. The average mobile home plumbing cost is between $2,000 and $4,000.  

Factors contributing to the total cost of plumbing

As stated above, the plumbing cost for a new house involves several factors. These include the number of bathrooms in your house, the materials you use, and the square footage of your home. 

Here’s a more detailed list of factors impacting your new plumbing cost:

Pipe materials

The most common water pipe materials are PEX, CPVC, and copper. Each material has different purposes and a different cost to reflect it. 

PVC costs between $0.50 and $1 per foot, PEX costs between $1.50 and $3 per foot, and copper pipe costs between $2 and $8 per foot.

When deciding between these three types of pipe materials it’s best to speak to a plumber as each material has unique characteristics that make them more suitable for certain tasks within your plumbing system.

Our plumbers here at Plumb-Tech can help guide you to the best materials for the pipework in your home. 


Excavation of a new home is a significant and expensive job, requiring trained professionals and complex machinery. Excavation is needed to install the drain pipes that run out of your home and connect local city water lines to your house.

This is not a DIY job and only be completed by plumbing professionals. 

The average cost of an excavation job is $80-$125 per hour or $80-$200 per yard. However, this can vary depending on the company you hire and your geographic location.

Number of fixtures and appliances

When calculating the plumbing cost for new houses, most companies will also take into account the number of appliances you have. Plumbing fixtures can be expensive, and the more fixtures you need in your home, the more expensive your final bill will be. 

Here is a list of common plumbing appliances in a home:

The average cost of new plumbing fixtures and appliances for your home is roughly between $2,750 to $8,000, depending on the quality and brand. 

These numbers could get bumped up even more if you choose higher-end products. Many homeowners choose to save money by buying their appliances used or second-hand. 

Number of bathrooms

The cost of plumbing a house increases with each bathroom in the house. The cost to plumb a bathroom can range from $1,500 and $3,000. Two bathrooms will cost $3,000 to $6,000. Three bathrooms can cost $4,500 to $9,000, and four bathrooms can be up to $6,000 to $12,000. 

Once again, these prices will vary depending on the materials, the brands, the quality of the fixtures used, and whether or not your bathrooms are on multiple levels.

Insurance costs

Insurance is a final factor in the average cost of plumbing a house. Insurance while building a new home is a great way to mitigate financial risks. Insurance can save you both time and money in the long run. It helps prevent loss in the event of accidents or damages that could occur during the building process. 

Building a new house requires different skilled trades experts to work alongside one another with expensive tools and machinery that could potentially cause costly accidents. 

Ensuring you are covered financially is a crucial first step to starting your new home build and should not be overlooked. The current national average for homeowners insurance is roughly $1,400 for an insurance policy with $250,000 coverage.

Ask your insurance company about new home discounts 

A general rule of thumb for home insurance is the newer the home, the longer it will take before anything goes wrong. This is why recently built houses are generally cheaper to insure than older ones. 

Insurance providers generally consider newly-built homes to be safer; therefore, some companies will offer discounts on policies for new homes. Ask your insurance provider about any available discounts.

If you need plumbing for your new home, Plumb-Tech is here to help. 

If you’re buying a new home for yourself or your family, it’s good to know how much plumbing will cost. 

At Plumb-Tech, we understand how stressful the process of building a new house can be, and we hope this guide helps ease the process for you. 

If you have any questions about plumbing costs or are looking for a reputable plumbing company that will keep your family’s safety and comfort in mind throughout the building process, contact Plumb-Tech today to get started.

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