What does a plumbing scope of work include?

It covers the full job — what's being installed or repaired, what materials are being used, the timeline, payment terms, and who's responsible for what. It's your written agreement with the client.

Do I need a permit for plumbing work?

Most plumbing work beyond simple fixture swaps requires a permit. New construction, remodels, repiping, and water heater installations typically need permits and inspections.

How long does a typical plumbing project take?

A fixture install or water heater swap can be done in a day. A full bathroom remodel plumbing takes 2-5 days. New construction rough-in depends on the size of the building but typically runs 2-5 days for a single-family home.

Can I modify this template?

Absolutely. It's a starting point — adjust it for your specific job. Download in PDF, Word, or Google Docs and make it yours.

What if I find unexpected issues during the job?

Document the issue, discuss options with the client, and get a signed change order before doing any extra work. This is especially common with remodels where you may find old or damaged piping behind walls.

Plumbing Scope of Work Template | Free Download 2026

A solid plumbing scope of work keeps your project running smoothly — no surprises for you or your client. Whether it's a new construction rough-in, a bathroom remodel, or a water heater swap, putting the details in writing up front prevents the headaches that come from assumptions. This template is designed for plumbing contractors who want a professional document they can hand to a homeowner or GC without spending half a day writing it. It covers the basics — what you're doing, what materials you're using, and when the job will be done. Adjust it for your project, fill in the blanks, and you've got a scope of work ready to go.

Project Overview

This scope covers plumbing work including water supply lines, drain/waste/vent (DWV) systems, fixture installation, water heater setup, and testing. Applicable to residential and commercial projects.

Typical Projects Include:

New construction plumbing rough-in and finish
Bathroom or kitchen remodel plumbing
Water heater installation or replacement
Repipe (water supply or drain lines)
Fixture installation (sinks, toilets, showers)
Gas line installation

Scope of Work

Planning

Task	Description
Site Assessment	Review existing plumbing, identify tie-in points, and note any issues that need to be addressed.
Layout & Design	Plan pipe routing, fixture locations, and connection points based on plans or client needs.
Permits	Pull required plumbing permits and schedule inspections with the local authority.

Rough-In & Installation

Task	Description
Water Supply Lines	Install hot and cold water supply piping to all fixture locations. Pressure test before closing walls.
Drain, Waste & Vent	Install DWV piping with proper slope and venting. Test for leaks before concealing.
Water Heater	Install or connect water heater with required shutoffs, expansion tank, and relief valve.
Gas Lines	Install or extend gas piping to appliances as needed. Pressure test all connections.

Finish & Testing

Task	Description
Fixture Installation	Install sinks, faucets, toilets, showers, and other fixtures. Connect supply and drain lines.
System Testing	Run all fixtures and check for leaks, proper drainage, and adequate water pressure.
Inspection & Handoff	Pass required inspections and walk the client through all installed work.

Timeline & Milestones

Typical timeline for a residential plumbing project. Larger or commercial jobs may take longer.

Phase	Duration	Description
Planning & Permits	1-2 weeks	Site review, layout, permit applications.
Rough-In	1-3 days	Run supply and drain lines before walls are closed.
Finish Work	1-2 days	Install fixtures, connect appliances, test everything.
Inspection & Closeout	1-3 days	Final inspection, punch list, client walkthrough.

Roles & Responsibilities

Client / Property Owner

•Provide access to work areas
•Select and approve fixtures and finishes
•Approve any change orders in writing
•Process payments per the agreed schedule

Plumbing Contractor

•Pull permits and schedule inspections
•Supply and install all plumbing materials
•Test all systems before closing walls
•Complete work per code requirements
•Clean up the work area daily

Materials & Equipment

Piping

•Copper, PEX, or CPVC supply pipe
•PVC or ABS drain/waste/vent pipe
•Fittings, valves, and shutoffs
•Pipe hangers and supports

Fixtures & Appliances

•Sinks, faucets, and drains
•Toilets and supply lines
•Shower/tub valves and trim
•Water heater

Accessories

•Expansion tank and pressure regulator
•Shutoff valves and hose bibs
•Sealant, solder, and Teflon tape

Quality Control Standards

Code Compliance

All work meets local plumbing code requirements.

Pressure Testing

Water supply lines tested at required pressure before concealing.

Proper Slope

All drain lines installed with correct slope for proper drainage.

Safety Protocols

General Safety

Follow OSHA guidelines. Use PPE — especially eye protection when soldering or cutting.

Trenching Safety

Use proper shoring and trench protection when digging for underground lines.

Gas Line Safety

Pressure test all gas connections. Use approved leak detection methods before energizing.

Project Documentation

Signed contract and scope of work
Permit and inspection records
Material specifications
Pressure test results
As-built photos
Warranty information for fixtures and water heater

Financial Terms

Payment Structure

Payments tied to milestones — deposit at signing, progress payment after rough-in, final payment after inspection and completion.

Terms & Conditions

•Deposit due at contract signing (typically 20-30%)
•Progress payment due after rough-in inspection passes
•Final payment due after finish work and final inspection
•Change orders approved in writing before extra work begins
•Payment due within 30 days of invoice

Acceptance Criteria & Sign-Off

The project is considered complete when the following criteria are met:

1All supply and drain lines installed and leak-free
2All fixtures operational with proper water pressure and drainage
3Water heater functioning correctly
4All inspections passed
5Client has received a walkthrough of completed work
6Work area cleaned up

Frequently Asked Questions

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Plumbing Scope of Work Template