how do I choose a drain cleaning company? Run five tests. (1) A real price, in writing, before work starts — not a coupon with conditions. (2) A Tennessee license number you can type into verify.tn.gov yourself, in the right category for the job's size. (3) A warranty with a number in it — days, printed, with the structural exclusion stated. (4) Camera proof: a scope before the quote and the video file in your hand afterward. (5) One consistent set of numbers everywhere the company appears. Any firm that passes all five, us included, is a reasonable hire. A firm that fails the first one will usually fail you the same way the reviews describe.
Test 1: The price exists before the work does
Ask what the job costs and listen for the shape of the answer. A price — "a main line clean is $249, here's the list, it's dated" — is one thing. A door-opener — "$99 basic cleaning" that excludes "extensive" work, applies to "accessible drains only," or lives only on an advertising page and not the company's own site — is another. Nashville has four of those $99 offers running at once, and the teardown of their fine print is on our comparison page if you want the receipts. The test isn't whether a company is cheapest. It's whether the number you're quoted on the phone is the number on the invoice, and whether the company will put the first one in writing. Our list is published on the cost page — $129 a fixture, $249 a main line with the camera — because a list you can hold us to is the entire point.
Test 2: The license number, verified by you
Tennessee's ladder is simple once someone lays it out, and almost nobody lays it out. There is no statewide "master plumber" credential — a company advertising one is selling you a title the state doesn't issue, which is itself a test result. The real credentials: a Limited Licensed Plumber (LLP) license covers plumbing work under $25,000, and it belongs to the individual who passed the exam — it isn't a company-wide blanket. A CMC-A contractor license from the Tennessee Board for Licensing Contractors is what a project at $25,000 and up requires — and a full sewer lateral replacement can cross that line, which is why the category matters and isn't paperwork pedantry.
So the test is mechanical: ask the company for its Tennessee license number, then type it into verify.tn.gov yourself — whose name it's in, which category, whether it's current. Run it on every quote you collect, ours included; any company worth hiring hands the number over without a negotiation. What you're checking isn't whether a drain cleaning needs a license in the abstract — it's whether the firm standing in your kitchen is accountable to a state board with its real name on file. A company that can't produce a verifiable number has answered the question.
Test 3: The warranty has a number in it
"If the clog returns, is the clearing guaranteed — and for how long?" is a national buying-guide checklist question, and in Nashville it separates the market by itself, because the only written clog-warranty term published anywhere in this city is Mr. Rooter's: 30 days. A Nashville reviewer, praising a sewer job, called a six-month warranty "rare for a sewer line job" — that's the market's own customer telling you the going standard. So ask for the term in days, in writing, and ask the follow-up that matters more: what's excluded? The honest answer — ours included — is that a cleaning warranty covers the cleaning on a sound pipe; if the camera shows the pipe broken, collapsed or bellied, no warranty can cover that, because cleaning can't fix a broken pipe. A company that warranties everything unconditionally is either not reading its own camera footage or not planning to honor the call. Ours is a written 1 year, exclusion stated, and the arbiter when there's a dispute is the footage — which brings us to the test that makes the others enforceable.
Test 4: The camera, and the video in your hand
Half the horror stories in the Nashville question bank reduce to one absence: no proof. The customer told there were no roots, who dug up his own yard and found them. The Tennessee line whose root mass, on the next day's camera, turned out to be only about twenty percent cleaned. The insurance plumber who quoted $7,000 for what turned out to be a coupler on the city's water meter. A camera scope before the quote turns "trust me" into "look" — and a post-clean camera pass proves the clean happened. The decisive question is the one the forum veterans insist on: do I keep the video file? Ask it before the inspection, not after. If the answer is anything but yes, you've learned what the footage would have shown you. Our scopes are $225, the file and written report are yours whether we do another thing or not, and every main line clean includes the camera before and after — that's on the camera page, in writing, like everything else.
Test 5: The numbers match everywhere
The last test costs you five minutes and catches more than the other four combined: compare the company to itself. Coupon price versus its own cost guide. The figure on its drain page versus the figure on its promotions page. The warranty in the ad versus the warranty in the terms. Nashville's most transparent operator still contradicts itself — a $99 coupon, an $89 version of the same coupon, a $129 guide price for the same job, and a $250 emergency dispatch fee sitting next to "no hidden fees" language. Companies with one list don't have this problem, because there's nothing to cross-check but the list. Ours fits on one page, dated, and if you ever catch two of our numbers disagreeing, we honor the lower one — that promise is printed on the homepage because it's cheap to make when there's only one list.
The two-minute version
Price in writing. License number, verified by you at verify.tn.gov. Warranty in days, exclusion stated. Camera before the quote, video in your hand after. Same numbers everywhere you look. A company passing those five is a company that has decided to be checkable — and in a market built on the opposite, checkable is the whole job. Our answers to all five are published rather than pitched; the about page carries the company, and the number for the test calls is (615) 555-0134.
