Drain cleaning in Houston: costs, methods and when to call

These ranges come from HomeGuide's 2026 drain cleaning cost guide. They are national figures; nights and weekends cost more, and a stubborn main line can need more than one visit.

HomeGuide also lists plumber labor at $45 to $150 per hour with a minimum call-out fee of $50 to $200, and notes that after-hours rates are often two to three times standard pricing.

Snaking (also called augering or rodding) feeds a rotating steel cable into the drain to break up or pull out the blockage. It is the standard method for single-fixture clogs. HomeGuide prices a simple sink, tub or toilet clog at $100 to $275 and a main drain or more complex blockage at $175 to $600.

Hydro jetting sends high-pressure water through the pipe to scour the walls. HomeGuide recommends it for tree roots, compacted sludge and grease buildup. Its guide gives two figures for severe jobs: $300 to $800 in its price table and $600 to $1,400 for main sewer jetting, so ask for a written quote before agreeing to it.

A good plumber will often suggest a camera inspection after a main line clog, especially one that keeps coming back. The video shows whether the cause is grease, roots, a sag, a crack or a collapsed section, which changes the fix from cleaning to repair. Older Houston homes may still have cast iron drains; our cast iron pipe guide explains what failure looks like, and the sewer line repair guide covers what happens if the camera finds damage.

• One slow drain, with everything else normal, is usually a local clog in that fixture's trap or branch line.
• Several drains backing up at once, or water coming up in a tub or shower when you run the washer or flush a toilet, points to the main line.
• Gurgling toilets when other fixtures drain can mean a partial main line blockage or a venting problem.
• Sewage coming up into the house needs a quick check outside. Houston Public Works says to look at the sewer cleanout near the street. If sewage is standing there, call 311 or submit a 311 request. If the cleanout is dry, the blockage is on your private line, which is the homeowner's responsibility. Our emergency checklist has the details.

Houston Public Works says 70% of the city's sewer overflows are caused by fats, oils and grease poured down drains and wipes flushed down toilets, and that the city responds to twice as many grease-related overflows when temperatures drop, because holiday cooking produces more grease and cold weather makes it solidify in the pipes. The same habits that protect city sewers protect your own line:

• Only flush the 3 P's: pee, poo and toilet paper. The city lists paper towels, all wipes including those labeled flushable, dental floss, diapers, feminine hygiene products, cotton swabs, hair, plastics and medicines among the items that should not be flushed.
• Put grease in the trash. Wipe pots, pans and plates with a paper towel or scraper before washing, and throw the paper towel away.
• Use a sink strainer to catch food scraps and hair.

A plunger or a hand auger is a reasonable first step for a single fixture. If you use a chemical product, follow the label exactly and tell the plumber what you used before they open the drain, so they can protect themselves. If a fixture keeps clogging after you clear it, or more than one drain is affected, stop and get a professional assessment rather than repeating the treatment.

Clearing a clog is not new plumbing, but repairs that follow can be. Section 1301.551 of the Texas Occupations Code exempts leak repairs and the replacement of faucets, toilets, ballcocks and garbage disposals from permits. Larger work, such as a new sewer connection, needs a permit from the Houston Permitting Center, obtained by a master plumber registered with the city.

Ask whether the price is per drain or per hour, whether a camera inspection is included, and what happens if the clog returns within a set period. Get any offer to replace pipe in writing, with the footage and method spelled out. The BBB suggests getting detailed written estimates from several plumbers and researching each one on BBB.org.

If the job could turn into pipe repair or replacement, check the plumber and the company's Responsible Master Plumber in the Texas plumbing license search. Our guide on how to choose a plumber in Houston lists more questions. We are an independent guide and do not clean drains. To reach a plumber, call one of the licensed contractors listed on this page or see all listed contractors. If you prefer, you can email us your question through our contact page.