Commercial Plumbing Contractor, 40-Year Phoenix Metro Operator

$6.3M

Revenue

$1.1M

SDE

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Full Editorial Writeup

This is a 40-plus year commercial plumbing contractor operating across the Phoenix metro in Maricopa County, one of the fastest-growing markets in the country. The company installs and services plumbing for a broad mix of commercial construction: shell buildings, ground-up retail, restaurants, manufacturing plants, distribution centers, and tenant improvements. Roughly 70% of activity is tenant improvement and remodel work with the remaining 30% tied to ground-up new construction, which gives the revenue base more repeatable, shorter-cycle work versus a pure new-construction shop.

The business runs on $6.3M in revenue with $1.11M of SDE and $979K of EBITDA, a healthy ~15.5% EBITDA margin for a commercial trade contractor. It employs 46 people including two key supervisors/project managers, and the owner reports a real management layer already in place. The moat here is not the plumbing itself but the licensing, the general contractor relationships built over four decades, and the reputation for on-time completion in a relationship-driven bidding market.

What makes this notable is the combination of a durable, license-gated service business, a genuine growth constraint (the seller openly states there are unbid opportunities being turned away due to capacity), and a motivated retiring seller offering up to a year of transition support. This is a boring, cash-generative contractor in a booming metro with a clear lever to grow: add estimators and labor to bid the backlog already sitting on the table.

Why we like it

Earnings quality is strong for a trade contractor, with $6.3M revenue converting to $979K EBITDA and $1.11M SDE, a margin north of 15%. The 70% tenant improvement and remodel mix means shorter project cycles and more repeatable work than a shop dependent on ground-up construction booms. Founded in 1982, this is a proven cash machine, not a startup story.
The moat is license-gated and relationship-driven. Commercial plumbing requires licensed qualifications, and the real barrier to entry is 40 years of established general contractor relationships that competitors cannot replicate quickly. GCs award work to plumbers they trust to finish on time, and switching costs on active projects are high.
Plumbing is about as recession-resistant as trades get. Even when new construction slows, tenant improvements, remodels, and repairs continue because occupied commercial buildings still need functioning water and waste systems. The 70/30 remodel-to-new-build split naturally hedges against a construction downturn.
The growth constraint is a rare gift for a buyer. The seller explicitly states there are unbid opportunities being left on the table due to capacity limits, meaning demand exceeds the company's current ability to bid and staff. Hiring estimators and crews turns a known pipeline into revenue without inventing new demand.
The operator advantage is real: a strong management team with two supervisors/project managers plus a retiring owner offering up to 12 months of transition. This is not a business that dies when the founder leaves, which materially de-risks the handoff for a buyer without deep plumbing experience.

How to improve it

Hire estimators immediately to capture the unbid pipeline the seller already identified. If the business is turning away work purely on capacity, adding bidding horsepower is the fastest path to top-line growth with no new marketing spend. Track bid win rate and dollar volume bid before and after to prove the lever.
Expand crew capacity to convert won bids into billed work. Adding labor in a market like Phoenix should let the company chase larger and more concurrent projects, and volume purchasing of materials can lift gross margins. Model the incremental crew cost against the backlog value to size the raise carefully.
Formalize a service and repair division alongside the project work. Recurring maintenance and emergency repair on the commercial buildings you already installed generates higher-margin, non-cyclical revenue and smooths the lumpiness of project timing. This also deepens the customer relationship beyond one-off construction jobs.
Lock down the facility lease, which is currently month to month and expires 07/31/2026. A buyer needs operational certainty, so negotiate a multi-year lease or evaluate relocating to a properly sized yard before closing. Month-to-month is a liability for a business planning to scale headcount and equipment.
Institutionalize the GC relationships so they do not walk out with the owner. Document who the key general contractor contacts are, assign account ownership to the two project managers, and use the 12-month transition to formally introduce the buyer and management to every major GC partner.
Explore adjacent trade partnerships or a bolt-on, as the seller suggests with HVAC or irrigation. Cross-selling mechanical trades to the same GCs increases wallet share per project and creates a more valuable, diversified contractor at exit. Even a referral partnership can add margin with minimal capital.
Build a real estimating and job-costing system if one is not already in place. Contractors leak margin on underbid jobs and change orders, so tight cost tracking per project protects the 15% EBITDA margin as volume scales. Better data also makes the business far more sellable at your own exit.

Diligence notes

Verify the customer and GC concentration behind the $6.3M in revenue. Relationship-driven contracting can hide heavy reliance on a handful of general contractors, and losing one or two could gut revenue. Ask for revenue by GC over the last three years.
Scrutinize the licensing structure and whether the qualifying party is the departing owner. If the license or bonding capacity is tied to the seller personally, you need a qualified party on staff or a plan to license the buyer before close, or the business cannot legally operate.
Confirm the SDE and EBITDA bridge with full add-back detail. Understand what is normalized owner compensation versus real cash flow, and whether the two supervisors are fairly paid or subsidized by an underpaid owner. Pull three years of tax returns and reconcile to the P&L.
Examine backlog, work-in-progress, and the reality of the unbid pipeline. A construction contractor's value hinges on signed contracts and the quality of the pipeline, so get the current backlog dollar figure, over/under billings, and evidence that the claimed unbid opportunities are actually winnable.
Assess bonding capacity, insurance, and any open warranty or lien exposure. Standing behind work is a selling point, but understand outstanding warranty obligations and whether any past projects carry latent liability. Review the last few years of claims history and current bonding limits.
Address the month-to-month lease and any equipment gaps before close. With only $10K of FF&E and $25K of inventory listed, confirm the crews have the trucks and tools needed to actually deliver, or budget for that capital in your model alongside a longer-term facility solution.

Source

Originally listed on BizBuySell. View original listing →