How to Grow Your Plumbing Business With Commercial Accounts

Why commercial accounts change your revenue math

When you're running five residential service calls a day, you're also running five separate dispatch decisions, five different homeowners with five different opinions about price. Commercial accounts consolidate that chaos. One property manager with ten locations is worth more to your pipeline than forty individual homeowners, and they rarely argue over a $150 service call invoice.

ServiceTitan notes that commercial plumbing companies typically lock clients into maintenance and service agreements that generate consistent, recurring revenue - the kind that makes your books look attractive to buyers or lenders. If you're even thinking about scaling to multiple trucks or positioning for acquisition someday, commercial revenue is how you get there. We cover the truck scaling side in detail over at how to scale your plumbing business with multiple trucks.

What does a healthy commercial plumbing margin look like?

According to Projul's owner playbook published in March 2026, you should target 50-60% gross margin on residential service and 20-35% on commercial project work and new construction. Net profit for a healthy plumbing company should land at 10-15%.

That lower gross margin on commercial is not a drawback - it is a feature. You are trading margin percentage for volume, predictability, and longer-term contracts. A 25% margin on a $40,000 commercial re-pipe beats a 55% margin on a $400 water heater swap every single time.

Profitability Partners, which has underwritten over 200 plumbing company acquisitions and reviewed actual P&Ls, flags that marketing spend above 12% of revenue without proportional growth signals a broken funnel. If you are hammering Google Ads for residential leads and your CPL is climbing, commercial accounts are a way to diversify away from that treadmill.

How do you actually find commercial plumbing clients?

The three most productive commercial targets for a plumbing company are general contractors, property management companies, and facilities managers at commercial buildings. Each one has a different sales motion.

General contractors want one thing: a sub who shows up when they say they will, bids clean, and does not create paperwork problems on the job site. Projul's playbook says to target GCs doing $5M to $50M in annual construction volume - big enough to have consistent work, small enough that your call gets answered. Reliability wins repeat commercial work more than price does, full stop.

Property management companies are gold because one contact controls dozens of units or buildings. You pitch them a maintenance agreement with scheduled inspections, priority service windows, and discounted call rates. They get budget predictability and you get recurring revenue - this is the same model that works in pest control and HVAC. See how it plays out in growing a pest control business with commercial accounts and growing an HVAC business with service agreements for cross-trade context.

Facilities managers at hospitals, schools, and office complexes are slower to close but worth the patience. They often have preferred vendor lists, so the move is to get on the list before you need the work. Show up to local commercial real estate events and join the local chapter of BOMA (Building Owners and Managers Association).

Bring a one-page capabilities sheet that shows your licensing, insurance limits, and average response time. That kind of documentation separates you from competitors who show up empty-handed and expect the relationship to carry the pitch.

Commercial vs. residential plumbing: side-by-side comparison

What should your marketing spend look like when targeting commercial?

You are not going to find commercial facility managers clicking Google Ads at 10pm because a pipe burst. Commercial business development is mostly outbound: cold calls, LinkedIn, in-person meetings, and referral networks.

That said, your digital presence still matters. A property manager vetting you after a referral will Google your company name. If your website looks like it was built in 2011 and has zero reviews, you lose the deal before you ever quote it.

For paid search on the residential side - which you are likely still running while building commercial - SearchLight Digital's April 2026 benchmark across 500 plumbing accounts found a $161 average CPL for general plumbing campaigns and $256 for water heater campaigns. Their top-quartile threshold is below $107 CPL. If you are above $253, you have optimization work to do before you dump more budget in.

Email is underrated for commercial re-engagement. According to ServiceTitan's data from Mugyver Consulting - a firm working exclusively with ServiceTitan customers - email marketing generates up to $40 for every $1 invested for plumbing businesses. If you have a list of past commercial contacts who never converted to ongoing agreements, an email sequence is cheap and it works.

How do service agreements lock in commercial revenue?

A commercial service agreement turns a one-time repair call into a monthly or annual revenue line. You are essentially selling them access to your schedule and your expertise on a retainer basis.

A basic structure includes an annual fee covering two preventive inspections per year, discounted emergency call rates (say, 15% off standard rates), and a guaranteed 4-hour response window during business hours. For a mid-size office building, that agreement might run $2,400-$4,800 per year depending on system complexity - before any actual repair work gets invoiced.

Stack five of those agreements and you have got $12,000-$24,000 in recurring annual revenue that you can forecast. That is the foundation that lets you hire your next tech with confidence. For a deeper look at structuring agreements on the plumbing side specifically, check out how to grow your plumbing business with service agreements.

Should you add specialty services to win commercial bids?

Commercial accounts often have needs that residential clients do not: backflow testing and certification, grease trap service, water treatment, and leak detection on large systems. If you can offer these in-house, you become harder to replace.

Leak detection is particularly sticky in commercial settings because undetected leaks create liability. Adding it as a service line gives you a reason to be on-site proactively, which is how you catch the next repair before it goes to bid. More on building that out at how to add leak detection services to your plumbing business.

Water filtration and treatment is another upsell that commercial clients actually want - restaurants, medical facilities, and office buildings all have water quality concerns. Details on building that revenue line live at how to add water filtration services to your plumbing business.

How do you close commercial accounts faster?

Jobber's 2026 Home Service Trends Report found that 69% of pros report a win rate above 50%, and more than a third close over 70% of the quotes they submit. Plumbing pros ranked among the highest close rates across all trades - largely because urgent services sell themselves.

For commercial, urgency is different. You are not selling to someone with water spraying out of a wall. You are selling to someone trying to reduce their maintenance budget risk, and your pitch needs to speak their language: reduced emergency repair costs, compliance documentation, faster response than their current vendor, and a single point of contact.

One tactic that works across dozens of contractor accounts is bringing a one-page case study to your first commercial meeting. Not a brochure - a real example. Something like: "We serve three property management companies in this zip code, our average response time is 2.1 hours, and we handle all the documentation for their annual backflow certifications." That kind of specificity closes deals.

Your follow-up process matters too. Most commercial deals do not close on the first call. Automate your follow-up so leads do not fall through the cracks - AI receptionist systems for contractors can handle the initial inquiry routing and follow-up cadence without adding headcount.

A word of caution from someone who went the other direction

Not everyone who tries commercial plumbing sticks with it. Akhoian of Rooter Hero Plumbing - cited in ServiceTitan's February 2026 growth guide - made a deliberate decision to exit commercial and focus exclusively on residential. That is a legitimate strategy too, especially if your crew is optimized for high-volume residential dispatch and commercial jobs would disrupt your scheduling model.

The decision to pursue commercial accounts has to be intentional, not just opportunistic. If you say yes to every commercial bid that lands in your inbox without a plan for staffing, pricing, and collections, you will be doing more work for worse cash flow.

Commercial clients pay on net-30 or net-60 terms. Your cash flow management needs to account for that gap - more on managing that pressure at how to manage cash flow in a contractor business.

Pricing commercial work to protect your margins

Flat rate pricing is harder to apply cleanly in commercial settings, but it is still worth building into your service agreement structure. When you publish defined rates for common commercial tasks - backflow testing, annual inspections, grease trap cleanouts - you reduce price negotiation and speed up invoice approval. More on structuring pricing across job types at flat rate pricing vs. hourly for contractors.

Material cost management is also more important on commercial jobs because the volumes are larger and the margins are tighter. A 5% overage on materials on a $40,000 commercial re-pipe is $2,000 out of your pocket. Building accurate material buffers into your bids from day one protects you. See how to manage material costs as a contractor for a practical framework.

Track your average ticket and gross margin by account type every month. If a commercial account is consistently pulling your margins below 20%, it is time to reprice or walk away. Not all commercial revenue is good revenue.

Frequently Asked Questions

Your next move

Pick one commercial segment - property managers, GCs, or facilities directors - and build a short list of ten targets in your service area this week. Research their current vendor relationships where possible and draft a one-page capabilities sheet that speaks to their specific concerns. Commercial accounts compound: one good relationship leads to referrals inside that network, and a single property management company can be worth more annual revenue than fifty residential customers combined.