Before Closing on a House
A general home inspection rarely runs a camera through the main sewer line. Seeing that pipe before closing lets you price a repair while you can still negotiate.
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PLUMBING INSPECTIONS
Sewer camera and whole-property plumbing inspections for Johnston buyers, landlords and owners, with recorded footage and a written summary of what we found.
OVERVIEW
A plumbing inspection is a documented check of a building’s water and waste system: a camera run through the main sewer line plus a fixture by fixture look at drains, supply lines, shutoffs, the water heater and its visible venting. We at Clog Busters inspect homes, rentals and commercial buildings across Johnston from our Des Moines branch at 3950 Vandalia Rd, open 24 hours a day, 7 days a week. Everything else we do in town is on our Johnston service page.
Johnston has a lot of rented housing to keep in order. U.S. Census Bureau estimates for 2020 to 2024 count about 2,700 of the city’s roughly 9,300 occupied homes as renter occupied. Under the city’s Rental Housing Program, every rental is registered and inspected every two years, and the checklist asks whether each unit’s fixtures work, whether supply and drain lines are free of leaks, whether there is hot water and whether the water heater is vented properly.
Those are the same items our whole-property check covers, so landlords often book one before the city’s visit. Our inspection does not replace the city’s rental inspection or a licensed home inspector. The full method is on our plumbing inspection service page, and water heater work found along the way is handled through water heater repair and replacement in Johnston.
Our inspection notes are written against the 2024 Uniform Plumbing Code, in effect statewide in Iowa since March 26, 2025.

WHEN TO BOOK
The best time to inspect is right before a decision that is hard to undo.
A general home inspection rarely runs a camera through the main sewer line. Seeing that pipe before closing lets you price a repair while you can still negotiate.
Johnston inspects every registered rental every two years. A plumbing check a few weeks ahead finds the leaking trap or the dead water heater while there is time to fix it.
An empty unit is the easiest time to run every fixture, look under every sink and camera the main line without working around anyone's schedule.
A second backup on one line means something keeps catching waste. Footage shows what it is, instead of clearing it a third time.
Drain and supply lines are easiest to see, test and correct before drywall, framing and flooring cover them.
A Johnston lot still on septic needs an Iowa time of transfer inspection by a DNR-certified inspector before sale. That is separate from our look at the plumbing inside the house.
INSPECTION SERVICES
For buyers, landlords, owners and businesses across Johnston.
A recorded run of the main line from an indoor or outdoor cleanout, noting pipe material, sags, offset joints, roots and anything lodged in the pipe.
Every fixture and the drain under it, visible supply lines and shutoffs, and the water heater with its visible venting, written up room by room.
Built around the plumbing and water heater questions on Johnston's rental checklist, so a landlord knows what to fix before the city inspector arrives.
A camera look at a line that keeps clogging, aimed at the reason it fails rather than one more clearing.
Where the drains and supply lines run, what they are made of and what shape they are in, documented before walls or floors come open.
Offices, restaurants and apartment buildings documented unit by unit, with kitchen lines noted. Our Des Moines branch also services restaurant grease traps.
WHY CLOG BUSTERS
Run it, look inside it, write it down, hand it over.
A purchase, a rental certificate, a remodel and a repeat backup each change where we spend the most attention, so we start with the reason you called.
Each sink, tub, shower, toilet and floor drain is run and watched for slow drainage, leaks at the trap and the supply connection, and working hot water.
The camera enters at a cleanout and records the pipe toward the street, with the distance noted at each defect so it can be found again from the yard.
We look at the tank, the temperature and pressure relief valve and its discharge pipe, the visible vent, the shutoff valves, the supply lines we can reach and the incoming water service pipe where it shows.
You receive the recording and a summary sorted into what is fine, what to watch and what needs work, with no obligation to hire us for any of it.
FAQ
Still stuck? Call the Des Moines shop at (515) 259-1991.
Usually not. A general home inspection is mostly visual and seldom sends a camera inside the main sewer line, the hardest part of the plumbing to see and one of the costliest to repair. A sewer camera inspection is a separate service booked alongside it. We at Clog Busters do not replace your home inspector; we add the view from inside the pipe.
The City of Johnston's Rental Housing Program checklist asks whether each unit has a tub or shower, lavatory, water closet and kitchen sink in working order, and whether supply and drainage are free of leaks. It also asks whether there is hot water and whether the water heater is vented properly. Every rental in Johnston is inspected every two years under the city's Residential Rental Code. Our rental readiness check covers those items ahead of time, but only the city's inspector can issue the certificate.
Yes. The City of Johnston defines rental property as any property not occupied by the owner, including one occupied by family members who are not the owners. A condo let to a relative therefore still needs registration and a Rental Inspection Certificate. A plumbing check before the city's visit shows what needs attention in a unit like that.
You need an Iowa time of transfer inspection of the septic system, done by an inspector certified by the Iowa Department of Natural Resources before the sale or deed transfer. Iowa Code 455B.172 sets that requirement. Our camera inspection does not satisfy that law. It records the condition of the building's own drain line, which helps you judge the plumbing inside the house.
We can tell you what the visible part of the incoming water service pipe looks like where it enters the building, and we note it in the summary. Johnston buys its drinking water from Des Moines Water Works and maintains its own distribution system, so the Johnston Water Department is the place to ask what its records show for your address. If the pipe looks like lead or galvanized steel, the report says so plainly.
The inspection leaves you with two things: the recorded camera footage and a written summary of our findings. The summary separates items that are fine, items to keep an eye on and items that need repair. Both are yours to share with a seller, a property manager, a tenant or another contractor. If repairs are needed, any price we give is based on that footage.
The summary states that the system is in good condition, and that is a useful result. For a buyer it settles a question before closing. For a landlord it is a dated record of condition at the start of a lease. We do not pad a report to create work.
Yes. We inspect offices, restaurants and multi-unit buildings in Johnston, unit by unit when the owner needs it. For restaurants we note the condition of kitchen drain lines, and our Des Moines branch also services grease traps. Apartment owners often schedule a building survey ahead of the city's two-year rental inspection cycle.
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