PlumberFindable field guide
Should Your Plumbing Site Publish Before-and-After Photos for AI Answers?
Why photos matter more in plumbing than in most trades
Most homeowners cannot tell a good solder joint from a bad one, which means every plumber's website reads the same to them: licensed, experienced, honest, five stars. Those claims are unverifiable on a page, so shoppers push them aside and ask an assistant a harder question instead: "which plumber near me actually does good work." The assistant has to answer from crawlable evidence, and captioned photos are the closest thing to verifiable evidence a plumbing site can publish.
This is where the format matters more than the photography. A gallery page full of unlabeled photos is nearly invisible to assistants. But "before: corroded 1998 water heater with a leaking TPR valve; after: 50-gallon replacement with expansion tank and new shutoff, completed in one visit" is a fact the assistant can repeat. Pair every photo with the job story and you turn decoration into citations.
What the photo set should actually show
Show the ugly middle, not just the finished cabinet. Homeowners distrust glossy after shots because every company publishes those; what they trust is the cracked flange, the roots in the line, the rusted-out tank. Before shots prove you actually did the work, and they answer the silent question every customer has: will my mess look as bad as this, and did they fix something like it.
Include at least one photo pair per major service: water heaters, sewer lines, repipes, bathroom rough-ins, sump pumps. Add a one-line caption to each pair with the job facts: the problem, what was replaced or repaired, and how long the visit took. Keep it to real numbers. "Two-hour water heater swap, same day" is evidence. "Fast, reliable service" is noise.
Put photos where assistants can find them
Do not trap your proof on a single gallery page. The photo pairs belong on the service pages themselves, next to the text describing that service, because that is the page the assistant reads when answering "who replaces water heaters near me." A gallery page orphaned from the service pages splits your evidence across URLs the assistant may never connect.
One service page with two captioned photo pairs and plain explanatory text outperforms a fifty-photo gallery with no words. Assistants cite pages that mix evidence with explanation, because the text gives them something quotable and the captions give them something specific. Photos without context are decoration; photos with job stories are content.
Make the images quotable, not just visible
Write alt text like a description, not a keyword dump. "Corroded galvanized supply line replaced with PEX in a 1960s ranch, finished in four hours" works; "plumber pipe repair plumbing services best plumber" does not. Add a visible caption under each photo repeating the same facts in plain language, because assistants weight visible text more heavily and readers trust what they can see.
Keep permissions clean. Get a one-line release from the homeowner before publishing, and never post a photo with a visible address, license plate, or full name. One privacy complaint undoes a year of trust building. And refresh the set quarterly: dates on photos that are three years old quietly tell the assistant your evidence is stale. Fresh jobs, fresh captions, fresh citations.