How to Grow a Plumbing Business: The Owner’s Playbook

Plumbing is one of the most recession-resistant trades out there. Pipes burst in good economies and bad ones. Toilets do not care about interest rates. And every new building needs plumbing regardless of what the stock market is doing.

But being recession-resistant does not mean growth is automatic. Plenty of plumbing companies stay stuck at the same revenue for years, with the owner working 60-hour weeks and barely taking home more than a journeyman’s wage.

If that sounds familiar, this guide is for you. We are going to walk through the strategies that separate the plumbing companies doing $500K from the ones doing $5M, and how to get there without destroying your body or your family life in the process.

Service Work vs. New Construction: Know Your Profit Centers

Every plumbing company needs to understand where their money actually comes from. Service work and new construction are fundamentally different businesses that happen to involve the same trade.

Residential service work:

• High margins (50 to 65 percent gross margin when priced correctly)
• Smaller ticket sizes ($200 to $5,000 typically)
• Requires fast dispatching and strong customer service
• Revenue depends on call volume and average ticket price
• Cash flow is immediate since you collect at the job

New construction plumbing:

• Lower margins (15 to 25 percent gross margin typically)
• Larger contract values ($5,000 to $50,000 per house)
• Revenue depends on builder relationships and housing starts
• Cash flow is slower since you wait for draws
• Work is more predictable once you have builder contracts

Commercial plumbing:

• Moderate margins (20 to 35 percent gross margin)
• Large project values ($20,000 to $500,000 or more)
• Requires bonding, larger crews, and more licensing
• Competitive bidding means you win some and lose some
• Payment terms can stretch to 60 or 90 days

The healthiest plumbing companies have a mix, usually anchored by residential service work for its margins and cash flow, with new construction or commercial work layered on top for volume.

If you are doing only new construction work for builders and making 18 percent margins, you are working harder than you need to. Adding a residential service division can dramatically improve your profitability.

Flat Rate Pricing: Stop Selling Your Time

If you are still charging by the hour for residential service calls, you are leaving money on the table and creating a worse experience for your customers.

Why hourly pricing hurts you:

• Customers watch the clock nervously, which creates a tense experience
• Your fastest, most skilled plumbers earn you less per job than your slowest ones
• It is impossible to give customers a firm price, which makes them hesitant to approve work
• You are essentially penalizing efficiency

Why flat rate pricing is better:

• Customers know the price before you start, which builds trust
• Faster plumbers make you more money per hour, which rewards skill and efficiency
• Average ticket prices typically increase 20 to 40 percent when switching from hourly to flat rate
• Presenting options (good, better, best) gives customers control over the decision

How to build your flat rate price book:

1. List every common service task: faucet repair, water heater replacement, drain cleaning, toilet replacement, slab leak repair, repipe, and so on.
2. Determine the average time for each task.
3. Calculate your fully loaded cost per hour (technician pay plus burden, truck costs, overhead, and target profit).
4. Add material costs for each task.
5. Build three pricing tiers where applicable: basic repair, recommended fix, and premium solution.
6. Print the price book or load it into your field service software so technicians can present options on site.

The transition to flat rate feels scary. Some old-school plumbers resist it. But virtually every plumbing company that makes the switch sees revenue increase within 90 days.

Dispatching: Turn Chaos Into Revenue

For service plumbing, dispatching is the heartbeat of your operation. How you route and schedule technicians directly determines how many calls you run per day and how happy your customers are.

Signs your dispatching is broken:

• You are dispatching by memory, whiteboard, or text messages
• Technicians drive 45 minutes between calls because routing makes no sense
• Customers get four-hour windows instead of specific appointment times
• Nobody knows which tech is available when an emergency call comes in
• You personally are juggling phone calls to figure out who goes where

What good dispatching looks like:

• A dispatch board (digital, not a whiteboard) shows every technician’s day at a glance
• Jobs are routed geographically so technicians stay in zones rather than crisscrossing town
• Emergency calls get routed to the nearest available tech
• Customers receive text updates: “Your plumber, Mike, is on his way. He will arrive in approximately 25 minutes.”
• You can see real-time status: who is en route, who is on site, who just wrapped up

The difference between poor dispatching and good dispatching is often one to two additional calls per technician per day. With an average service ticket of $400, that is $400 to $800 in additional daily revenue per tech. Over a year, across a team of five technicians, that adds up to hundreds of thousands of dollars.

Projul handles scheduling and dispatching as part of its contractor management platform, giving you visibility into your entire operation from one screen.

The Art of Technician Training

Your technicians are the face of your company. They are in customers’ homes, making first impressions, diagnosing problems, and presenting solutions. How well they do this determines your average ticket, your close rate, and your review score.

Technical training is table stakes. Your plumbers need to be competent at their craft. But technical skill alone does not grow a plumbing business. What separates the high-performing companies is training technicians on the non-technical stuff.

Customer interaction training:

• Greet the homeowner by name
• Put on shoe covers before entering the home
• Explain the problem in plain language, not plumber jargon
• Show the customer what you found (photos or video from the camera)
• Present options and let them choose rather than making the decision for them

Option selling:

Train your plumbers to present three options for every significant repair:

1. Minimum fix. The least expensive solution that addresses the immediate problem. “We can patch this section of pipe for $350, but the rest of the line is in similar condition.”

2. Recommended repair. The option you would suggest for most situations. “Replacing the affected section with new PEX would cost $1,200 and should last 25 years.”

3. Premium solution. The full fix that addresses everything. “A whole-house repipe would be $6,500 and means you never have to worry about your piping again.”

You are not upselling. You are giving the customer information and letting them make an informed choice. Most will pick the middle option. Some will pick the premium. Almost none will pick the minimum once they understand the full picture.

Companies that train on option selling typically see their average ticket increase by 30 to 50 percent without any pushy sales tactics.

Ongoing training schedule:

• Weekly ride-alongs where a senior plumber observes and coaches
• Monthly team meetings to review callbacks, customer feedback, and new techniques
• Quarterly skills training on specific topics (water heater installation, camera inspection, drain cleaning techniques)
• Annual certification updates and code review

Online Reviews: Your Best Salesperson

In plumbing, reviews are everything. When a homeowner has a leak at 10 PM, they are going to Google “emergency plumber near me” and call the first company with good reviews and a high rating.

The numbers are clear:

• 93 percent of consumers read online reviews before choosing a local business
• Companies with 4.5 stars or higher get significantly more calls
• The difference between 30 reviews and 100 reviews is often the difference between page one and page two on Google

How to build a review machine:

Ask every single customer. Not just the happy ones. Every single one. Send a text with a direct link to your Google review page within two hours of completing the job.

Make it personal. “Hi [Name], this is [Technician] from [Company]. It was great helping you today. If you have a minute, a Google review would mean a lot to our small team. [Link]”

Automate the request. Use your CRM or project management tool to trigger review requests automatically when a job is marked complete.

Respond to every review. Thank positive reviewers by name. For negative reviews, respond professionally: acknowledge the issue, apologize for their experience, and offer to make it right. Potential customers read your responses as much as the reviews themselves.

Track review velocity. Set a goal. If you are running 200 calls per month, you should be getting 30 to 50 new reviews per month. If your rate is much lower, your ask process needs work.

Winning Commercial Plumbing Contracts

Commercial work adds volume and stability to your revenue. But winning commercial contracts requires a different approach than residential service.

Building your commercial pipeline:

General contractor relationships. GCs need reliable plumbing subs. Meet with GCs in your area, especially mid-size firms doing $5M to $50M in annual construction volume. Be responsive on bids, show up on time, and deliver clean work. Reliability wins repeat commercial work more than price does.

Property management companies. These firms manage office buildings, apartment complexes, retail centers, and industrial properties. They need plumbers on call for repairs and scheduled maintenance. Get on their approved vendor list and respond quickly when they call.

Facility maintenance contracts. Offer commercial clients a maintenance agreement that includes scheduled inspections, priority service, and discounted rates. This creates recurring revenue and positions you as their go-to plumber.

Government and municipal work. Public sector plumbing projects are awarded through formal bidding. Register as a vendor with your city, county, and state. These projects have slower payment but reliable budgets.

Bid consistently. You will not win every bid. That is normal. The key is bidding regularly so GCs and property managers see your name and know you are serious. Win rates of 15 to 25 percent are typical in commercial plumbing.

Dispatching Technology and Tools

Let us get more specific about the technology side of running a service plumbing operation.

What your tech stack needs to do:

• Call handling. Track every incoming call, log the customer’s information, and create a work order. Missed calls are missed revenue.
• Scheduling. Assign jobs to technicians based on skill, location, and availability. See the whole day at a glance.
• Routing. Group jobs geographically so techs are not driving across town between calls.
• Field communication. Technicians need job details, customer history, and the ability to update job status from their phone.
• Invoicing. Generate and send invoices from the field. Collect payment on site. Do not wait days or weeks to bill.
• Reporting. Track revenue per tech, average ticket, close rate, and callback rate.

Projul covers scheduling, project management, estimating, and invoicing in one platform. For plumbing companies juggling dozens of service calls per day alongside larger projects, having everything in one system eliminates the data entry and miscommunication that comes from using five different tools.

Hiring and Keeping Good Plumbers

The labor shortage in plumbing is real and it is not getting better. The average age of a plumber in the US is over 45, and not enough young people are entering the trade. Companies that figure out recruiting and retention will have a massive advantage.

Recruiting strategies that work:

• Trade school partnerships. Build relationships with local plumbing programs. Offer to do guest lectures, host field trips, and provide apprenticeship slots.
• Competitive compensation. Know what plumbers in your market are earning and pay at or above that level. Include benefits: health insurance, retirement, paid time off. These things matter, especially to plumbers with families.
• Referral bonuses. Pay your current plumbers $1,000 to $2,500 for every successful hire they refer. Your best employees know other good plumbers.
• Indeed and trade job boards. Post specific, detailed job listings that describe your culture, pay range, and benefits. Generic “plumber wanted” posts get generic applicants.

Retention strategies that work:

• Career paths. Show every plumber where they can go: apprentice to journeyman to foreman to service manager to estimator. People stay when they see a future.
• Good equipment. Nothing drives a plumber crazy faster than broken tools and unreliable trucks. Invest in quality equipment and maintain it.
• Respect their time. Minimize unnecessary meetings, reduce windshield time with smart routing, and let them go home when the last call is done. Do not manufacture busy work.
• Recognition. Celebrate wins publicly. Acknowledge the tech who got five reviews this week or the crew that finished a project ahead of schedule.
• Culture. This sounds soft, but it matters. Do your plumbers enjoy coming to work? Do they feel valued? Do they trust that you have their back? Culture is the single biggest factor in retention.

Marketing That Works for Plumbers

Plumbing marketing does not need to be fancy. It needs to be consistent and targeted.

Google Business Profile (number one priority). Most plumbing leads come from Google. Your GBP profile needs current photos, dozens of reviews, accurate service areas, and regular posts. This is not optional.

Google Ads. “Plumber near me,” “emergency plumber [city],” and “water heater repair” are keywords worth bidding on. Yes, clicks are expensive ($20 to $50 in most markets). But the intent is high and the ROI is strong.

Truck wraps. A clean, professional truck wrap is a moving billboard. Every time your truck is parked at a job, neighbors see it. Make sure your phone number and website are large enough to read from 50 feet away.

Referral programs. Offer existing customers $50 to $100 credit for every referral that turns into a job. Word of mouth is still the highest-converting lead source in plumbing.

Home warranty companies and insurance partnerships. These can provide a steady stream of service calls. The margins are lower, but the volume can help keep technicians busy during slow periods.

Community involvement. Sponsor little league teams, participate in Habitat for Humanity builds, and show up at local events. Small-town plumbing companies grow on community reputation.

Know Your Numbers

If you do not know your numbers, you are guessing. And guessing does not scale.

Weekly metrics to track:

• Number of service calls run
• Average ticket price
• Revenue per technician
• Close rate on presented options
• Number of new reviews received

Monthly metrics to track:

• Total revenue by division (service, new construction, commercial)
• Gross margin by division
• Callback rate
• Customer acquisition cost by lead source
• Accounts receivable aging

Quarterly metrics to track:

• Net profit
• Overhead as percentage of revenue
• Technician utilization rate
• Year-over-year growth

You do not need a fancy dashboard. A simple spreadsheet works, though project management software like Projul makes it easier by automatically tracking job costs and revenue.

The key is looking at the numbers regularly and making decisions based on data rather than gut feeling.

The Bottom Line

Growing a plumbing business is not about working more hours. It is about building the systems, team, and processes that let you serve more customers profitably without being personally involved in every call.

Flat rate pricing increases your revenue per call. Smart dispatching gets more calls done per day. Trained technicians increase average tickets and reviews. And project management software ties it all together so nothing falls through the cracks.

Projul gives plumbing companies a single platform for estimates, scheduling, project management, and invoicing. Whether you are running ten service calls a day or managing a $500K commercial project, everything stays organized and accessible from the field or the office.

Ready to grow your plumbing business the right way? Start your free trial today.