How to start a plumbing business
Plumbing is a licensed trade with high capital requirements and excellent service margins. The first ninety days are mostly about being findable, available and properly stocked.
For the financials, see the plumbing business plan.
Before anything: licensing
- Journeyman or master licence, with documented apprenticeship hours and an exam
- State contractor registration and usually bonding
- Whether you can operate independently or need a qualifying licence holder
- Any separate gas endorsement
This takes months, not weeks, in most states. Most people entering the trade come from an employer where they accumulated the hours; if you have not, working for an established company is the path rather than a detour.
Weeks 1–2: van and stock
The van is not the expensive part. Stocking it is, and it is the line new plumbers consistently underestimate.
Tools, press tool, torch set, drain machine and ideally a camera. Then the parts: cartridges, supply lines, shut-off valves, fittings in the common sizes, wax rings, flex connectors, an expansion tank, and enough to complete a water heater swap without leaving.
$3,000 to $8,000 of stock feels like a lot until the first time you finish a job on the first visit while a competitor books a return trip. First-visit completion rate is what generates your early reviews, and reviews are what you have instead of a reputation.
Week 3: the supply house relationship
Open an account locally and introduce yourself in person.
They extend terms once you have trading history, which transforms your cash position. They tell you what is failing across your market. And in a cold snap they will hold a part for somebody they know.
It costs nothing and it is a genuine competitive asset.
Weeks 4–8: be findable and available
Plumbing demand is urgent and searched. A homeowner with water coming through a ceiling calls the first two or three credible results.
Google Business Profile. Real photos, accurate hours, licence number, and answer the phone.
Local Services Ads. Pay-per-lead, high intent, and they work before you have organic rankings. Close rate depends almost entirely on response speed.
Answering the phone is a marketing channel. If you are under a sink and calls go to voicemail, you are losing jobs you already paid to generate. An answering service or online booking costs less than the work it saves.
Weeks 9–12: build the habits that compound
Charge a diagnostic fee and credit it against the repair. Finding the fault is the skilled part and the first thing to go unpaid if it is not its own line.
Build a flat-rate price book for your twenty most common jobs. It makes quoting fast and consistent, and consistency matters the first time a customer rings for a second opinion from your own company.
Take payment on site. Emergency plumbing has a high rate of customers who are relieved when you finish and slow to pay afterwards.
Ask for a review before you leave, every time.
Set up a reason to be called back — an annual water heater check, a drain maintenance reminder. Most plumbers do excellent work and then never contact the customer again.
What to run it on
Dispatch, on-site invoicing and pricing consistency are the needs.
Jobber at $49/mo plus $29 per seat is the value choice for one to four plumbers. Housecall Pro from $189/mo adds the flat-rate price book and dispatch board as you grow. QuoteIQ at $29.99/mo covers a solo plumber with financing on every tier for repipes.
Questions operators actually ask
How do I start a plumbing business?
Confirm your licence and bonding, buy and stock a van properly, open a supply house account, then market on emergency availability. Licensing takes the longest and everything else waits on it.
What licence do I need to start a plumbing business?
State journeyman or master plumber licensing, requiring documented apprenticeship hours and an exam, plus contractor registration and usually bonding. Requirements and reciprocity vary substantially by state.
How much does it cost to start?
$30,000 to $77,000. The van, tools, drain machine and camera, van stock, licensing, bonding and insurance. Van stock is the line new plumbers consistently underestimate.
Why does van stock matter so much?
Because first-visit completion rate is how you get reviewed well. A plumber who leaves to fetch a part loses an hour and looks unprepared, and early reviews are what you have instead of reputation.
How do I get my first plumbing customers?
Google Business Profile and Local Services Ads for emergency work, which is urgent and search-driven. Then take payment on site and ask for a review before you leave.