Piping installation is the process of adding new pipes for water, gas, or drainage systems in your home. It can be a small job, such as connecting a new dishwasher, or a large project, such as running all the plumbing for a new bathroom. Professional plumbers make sure the system is safe, efficient, and up to code.

You need to understand the cost factors in order to estimate the cost of installing new pipes:

• Pipe material: The type of pipe you choose plays a big role. For example, copper pipes typically cost more than PEX or PVC pipes.

• Accessibility: It’s generally less expensive to install pipes in an open basement or crawl space than it is to access pipes behind finished walls or under concrete slabs.

• Project size: A small repair or single-line installation will cost less than repiping an entire house.

• Labor: A plumber’s hourly rate can vary based on your location and their experience level. Complex jobs that take more time will naturally increase the labor cost.

• Permits: Depending on the scope of your project and local regulations, you may need to get a permit, which comes with its own fee.

In some cases, you can lay your own water pipe, but it depends on local building codes and the scope of the work. Many areas allow homeowners to perform minor plumbing work, such as replacing short sections of pipe. However, larger projects — especially those involving main water lines — often require permits and must be installed by a licensed professional. Improper installation can lead to leaks, contamination, or water pressure issues. Even when DIY is allowed, inspections may be required. For major water line installations or repairs, hiring a licensed plumber helps ensure the work is safe, code-compliant, and long-lasting.

PEX piping is the most popular type of modern piping in residential homes. PEX (cross-linked polyethylene) is widely favored because it’s flexible, durable, and easier to install than traditional materials like copper or galvanized steel. It resists corrosion, scale buildup, and freezing better than metal pipes, making it well suited for a variety of climates. PEX is also more cost-effective than copper and requires fewer fittings, which reduces the risk of leaks. While copper and PVC are still used in certain applications, PEX has become the go-to choice for modern home plumbing systems.

During your pro’s visit, they'll typically start by assessing the work area, shutting off the water supply, and protecting your floors and belongings. They’ll then remove any old or damaged sections before measuring, cutting, and installing the new pipes. Once everything is connected, your pro will turn the water back on to test the system, checking for leaks and ensuring proper water pressure before cleaning up the site.

Your new pipes will first need to be checked to ensure all connections are properly sealed to prevent leaks. From there, it's a good idea to have them inspected annually to check for water pressure changes, blockages, or potential corrosion and leaks. Regular drain cleaning can also prevent clogs. This simple upkeep can help you avoid major repairs down the road.

When looking for a professional pipe installer, make sure you complete the following steps:

• Verify their license and insurance: Plumbers should have a local or state-issued license and carry both general liability and workers' compensation insurance. These requirements vary by region, so it’s a good idea to check your local rules.

• Get several bids: A proper estimate should be a detailed, written document breaking down the costs for labor, materials, and any necessary permits. It should also provide a clear project timeline.

• Read their reviews: Look for reviews that mention professionalism, clear communication, and finishing the job on time and on budget. Red flags include complaints about surprise fees, messy work, or leaks that appeared after the installation was complete.

• Look at their portfolios: Their past work should show projects similar to yours. Look for photos of neat, well-organized pipework with clean connections and proper supports.

• Find out if they have warranties: A reputable pro will often guarantee their installation against leaks for a certain period. Be sure to get any warranty details in writing.

• Ask important questions: Before hiring, ask: "What type of piping do you recommend for my home and why?," "Is your estimate all-inclusive, covering materials, labor, and cleanup?," and "What’s the timeline for this project?"