New Construction Plumbing in Kirkland, WA

Trusted New Construction Plumbing Services in Kirkland, WA

New Construction Plumbing Cost Planning in Kirkland, WA

Plumbing for a typical new single-family home often runs about 4 to 8 percent of total build cost, depending on fixture count and finish level. A modest three-bedroom home often lands between $12,000 and $25,000, while custom homes with multiple suites and outdoor kitchens run higher. Choices like a manifold PEX system, a recirculation loop and fixture grade affect the price the most. We break the bid out by phase so you can see exactly where the money goes.

Sewer and Water Main Connections in Kirkland, WA

Connecting your new home to the municipal sewer and water mains is a critical step in new construction plumbing. FHN Plumbing handles all aspects of these connections, including excavation, trenching, pipe laying, and backfilling. We ensure proper grading and sealing to prevent future leaks or blockages. Steep slopes and wet soils can move over time, which stresses buried sewer and water lines and sometimes separates joints.

Permits and Inspections for New Plumbing in Kirkland, WA

FHN Plumbing handles all necessary plumbing permits and coordinates with local Kirkland inspectors throughout the new construction process. We make sure every phase of the plumbing installation, from rough-in to final trim-out, passes inspection. Our knowledge of local regulations means your project stays compliant, avoiding delays and ensuring the long-term validity of your plumbing system.

Water Heater and Recirculation Installation in Kirkland, WA

New homes commonly use tank water heaters in the garage, basement or utility room, or tankless units on an exterior wall. We size the heater to your bathroom count and install gas or electric connections, venting, an expansion tank and drain pan where required. Many owners add a dedicated recirculation line during rough-in, which is far cheaper than retrofitting later. Many rural Washington homes rely on private wells, and some carry iron, manganese or other minerals that call for testing and treatment. If treatment makes sense for your water, we suggest planning space for a softener or filter loop at the same time.

Rough-In and Top-Out Plumbing in Kirkland, WA

Once framing is up, we run supply and vent lines through the walls and attic and set every stub-out for sinks, tubs, showers and appliances. We typically install PEX-A with a central manifold so each fixture gets its own line and shutoff. Shower valves are set at the heights you choose, and tub sets are installed and protected before the drywall is hung. A full pressure test is held for inspection so nothing hidden in the walls is ever a question.

Guest House, ADU and Addition Plumbing in Kirkland, WA

Guest houses and additions need plumbing that ties into the existing house without overloading old drain lines. We locate the existing sewer, check its condition with a camera and verify there is enough fall to the new building. Supply lines can be branched from the main house or run as a separate service, depending on distance and pressure. We also handle the trenching between structures and repair the yard when we are done.

Gas Piping for New Homes in Kirkland

We size and install gas piping for ranges, water heaters, furnaces, fireplaces, pool heaters and outdoor kitchens. Black iron and CSST systems are both options, and CSST is bonded per manufacturer and code requirements. We calculate total BTU load and pipe length so every appliance gets enough pressure even when everything runs at once. The system is pressure tested and inspected before the utility installs the meter.

Commercial and Multifamily New Construction in Kirkland

We also plumb small commercial buildouts, offices, retail suites and multifamily projects. These jobs frequently require grease interceptors, backflow assemblies, commercial water heaters and ADA compliant fixtures. We read commercial plans, coordinate submittals and keep the general contractor updated through each inspection. Our crews scale up so plumbing never becomes the bottleneck on your project.