The Complete Guide to Plumber Service Agreements in Texas

Plumbing work in Texas is regulated by the Texas State Board of Plumbing Examiners (TSBPE), and performing plumbing work without a proper license is illegal. A written service agreement is essential for documenting the scope of work, complying with Texas plumbing regulations, and protecting your right to payment.

Unlike general contractors, plumbers in Texas must hold a state-issued license. This means your contract must include your license number and must state that all work will comply with the International Plumbing Code as adopted by Texas. A verbal agreement does not satisfy these requirements.

A written agreement also protects you in case of disputes. If a client claims your plumbing work caused water damage, your contract is your proof of what you agreed to do and what standards your work would meet. Without it, you have no way to defend yourself against false claims.

In Texas, plumbers must be licensed by the Texas State Board of Plumbing Examiners (TSBPE) under Texas Occupations Code Chapter 1301. There are several license types: tradesman plumber, journeyman plumber, master plumber, and plumbing inspector. Each license type has different experience and examination requirements.

A master plumber license is required to obtain a plumbing permit and to operate a plumbing business. A journeyman plumber can perform plumbing work but must work under the supervision of a master plumber. A tradesman plumber can perform limited plumbing work, such as residential fixture replacement, under the supervision of a master or journeyman plumber.

To obtain a master plumber license in Texas, you must have at least one year of experience as a journeyman plumber, pass a written exam covering plumbing theory, the International Plumbing Code, and Texas plumbing law, and submit an application with the required fees.

Your TSBPE license number must appear on all contracts, bids, and solicitations. If your license number is missing from the contract, the contract may be unenforceable, and you could face TSBPE discipline, including fines and license suspension.

Texas has adopted the International Plumbing Code (IPC) as the state plumbing code, with Texas-specific amendments. All plumbing work performed in Texas must comply with the IPC as adopted and amended by the state and the local jurisdiction.

Your service agreement should state that all plumbing work will comply with the International Plumbing Code as adopted and amended by the state of Texas and the local jurisdiction. This sets the standard for your work and protects you if a client later claims the work does not meet code.

Texas amendments to the IPC include requirements for water conservation fixtures, such as low-flow toilets and faucets, and expanded requirements for backflow prevention in certain types of buildings. Your work must meet these Texas-specific requirements, not just the baseline IPC standards.

Local jurisdictions in Texas may have additional amendments to the state plumbing code. For example, some cities require separate plumbing permits for each type of plumbing work, such as water heater replacement, sewer line repair, or new construction plumbing. Always check with the local building department to confirm what codes and amendments apply to your project.

Backflow prevention is a critical safety requirement for plumbing work in Texas. Backflow occurs when water flows backward from a plumbing system into the public water supply, potentially contaminating the drinking water. Texas law requires backflow prevention devices in certain types of plumbing systems.

Under Texas Water Code Chapter 341 and TSBPE rules, plumbing systems that have a potential cross-connection with a non-potable water source must include an approved backflow prevention device. This includes irrigation systems, swimming pool fill lines, and commercial systems with chemical injection or processing equipment.

Your service agreement should state that you will install appropriate backflow prevention devices as required by state and local health codes. This is important because it documents your compliance with backflow prevention requirements and protects you if a client later claims the work does not meet code.

Backflow prevention devices must be tested annually by a certified backflow prevention tester. Your contract should state whether annual testing is included in your services or whether it is the client responsibility to arrange testing separately. Being clear about this prevents disputes later.

In Texas, most plumbing work requires a permit and inspection. This includes new installations, modifications to existing plumbing, water heater replacements, sewer line repairs, and fixture replacements in some jurisdictions. The only exceptions are minor repairs like replacing a faucet washer or clearing a drain blockage.

Your service agreement should state that you, the contractor, are responsible for obtaining all required plumbing permits and scheduling all required inspections. This clarifies who is responsible for compliance and protects you if the client later claims the work was done without permits.

Plumbing inspections in Texas typically involve two stages: a rough-in inspection, which occurs after the plumbing pipes are installed but before they are covered by drywall or concrete, and a final inspection, which occurs after all fixtures are installed and the system is tested for leaks.

If the work fails inspection, you are responsible for correcting the deficiencies and scheduling a re-inspection. Your contract should state that you will correct any code violations identified by the inspector at no additional cost to the client.

Plumbers in Texas have mechanics lien rights under Texas Property Code Chapter 53. If you perform plumbing work that improves real property and you are not paid, you can file a lien against the property to secure payment.

For original contractors (those who contract directly with the property owner), the deadline to file a lien affidavit is the 15th day of the fourth month after the last day of the month in which you last furnished labor or materials. For example, if you last performed work on September 10, the four-month clock starts on October 1, and your lien affidavit must be filed by February 15.

For subcontractor plumbers, the deadline is the 15th day of the fifth month, and a notice of unpaid balance must be sent to the owner and original contractor by the 15th day of the third month.

A practical example: you finish a repipe project on October 15. The four-month clock starts on November 1. You have until March 15 to file your lien affidavit with the county clerk in the county where the property is located. If you miss this deadline, you lose your lien rights entirely.

A plumbing workmanship warranty should cover defects in materials and workmanship for a defined period. The standard warranty period for plumbing work is one year from the date of completion. This means that if a pipe leaks, a fixture fails, or a connection fails due to improper installation, you will repair or replace it at no cost to the client.

Your warranty should exclude damage caused by events outside your control, such as freezing temperatures, ground movement, tree root intrusion, or modifications made by someone other than you. It should also exclude damage caused by the client misuse of the plumbing system, such as flushing inappropriate materials or using harsh chemical drain cleaners.

Your contract should state that all plumbing work will be free from defects in materials and workmanship for a period of one year from the date of completion, and that you will correct any defects identified during that period at no additional cost.

For water heater installations, consider offering a warranty that matches or exceeds the manufacturer warranty. Many water heater manufacturers offer 6-year or 10-year warranties on the tank and components. Your workmanship warranty should cover the installation labor for at least one year, and you should clarify that the manufacturer covers the equipment itself.

One common mistake is performing plumbing work without a permit. Some plumbers skip permits to save time and money, but this is illegal and can result in fines, TSBPE discipline, and liability for any defects. Always obtain the required permit before starting work.

Another frequent error is not including the TSBPE license number on the contract. Without it, the contract may be unenforceable, and you could face TSBPE discipline. Always include your license number on the first page of every contract.

Not installing required backflow prevention devices is a serious oversight. If a plumbing system has a potential cross-connection with a non-potable water source and you do not install a backflow prevention device, you are violating Texas law and could be held liable for any contamination that results.

Using a generic template that does not address Texas-specific plumbing requirements is also a problem. A template written for another state may not address the Texas plumbing code amendments, backflow prevention requirements, or TSBPE licensing requirements. A Texas-specific template ensures your contract is built for Texas requirements.

Finally, some plumbers do not include a workmanship warranty in their contracts. Without a warranty, the client has no written assurance that you stand behind your work. Always include a warranty that covers defects in materials and workmanship and excludes damage from events outside your control.

Before signing a plumbing service agreement in Texas, verify the following: Your TSBPE license is active and current, and the license number is printed on the contract. The contract states that all work will comply with the International Plumbing Code as adopted and amended by Texas and the local jurisdiction.

The contract states that you will install appropriate backflow prevention devices as required by state and local health codes. The contract states that you are responsible for obtaining all required permits and scheduling all inspections.

You understand your mechanics lien deadlines. For original contractors, file your lien affidavit by the 15th day of the fourth month after the last day of the month in which you last performed work. For subcontractors, the deadline is the 15th day of the fifth month, with a notice of unpaid balance due by the 15th day of the third month.

The contract includes a workmanship warranty that covers defects in materials and workmanship for at least one year and excludes damage from freezing, ground movement, tree roots, and client misuse. The payment schedule is tied to specific milestones with clear due dates and late payment penalties.

If you have checked all of these items, you are ready to sign with confidence. The Texas plumber service agreement template on this site already includes all of these clauses, so you can generate a compliant document in minutes.