In a multi-story building, the sewer stack carries waste from every floor. When it fails, the problem shows up in more than one unit.
Written byNew Pro Plumbing·Reviewed byMiguel Lopez, Owner & Licensed Plumber, New Pro Plumbing (CSLB #974600)·Last reviewedSeptember 2026 · 8 min readQuick Answer
A sewer stack is the vertical drain pipe that carries waste from each floor down to the building drain. Stacks can clog, crack, or corrode, often causing backups or leaks in lower units. We camera the stack, clear it, and repair or line damaged sections with as little wall opening as possible. In Marina del Rey, many condo buildings from the 1960s and 1970s still have original cast-iron stacks.
In a multi-story building, kitchens and bathrooms connect to vertical drain stacks that run through the walls down to the building drain. Every unit on that stack sends waste through the same pipe. When the stack clogs, usually with grease on kitchen stacks, the backup appears in the lowest unit. When it cracks or corrodes, leaks can appear in walls or ceilings. This page is part of our complete guide to sewer line repair in Marina del Rey.
Condo Sewer Stack Repair: A sewer stack is a vertical drain pipe in a multi-story building that carries waste from each floor to the building drain.
Older stacks, often cast iron, corrode and scale over time. Repairing them used to mean opening walls on every floor. Today, many stacks can be cameraed, cleaned, and lined from cleanouts, with wall access limited to specific points.
In Marina del Rey, many condo buildings from the 1960s and 1970s still have original cast-iron stacks. Original cast-iron stacks are common in Marina del Rey's 1960s–1970s condo buildings.
We inspect from cleanouts at the base or on upper floors.
Hydro jetting or descaling, depending on the pipe.
Spot repairs or lining for damaged sections.
Resident notice and access planned with management.
Camera first, always. Every recommendation starts with a recorded inspection you can watch yourself, and a flat-rate price you approve before we start.
Many of Marina del Rey's condo buildings date from the 1960s and 1970s, and many still have original cast-iron drain stacks. After fifty-plus years, those stacks are often scaled, corroded, or cracked, and kitchen stacks carry decades of grease. Lower-floor owners feel it first, with backups and leaks. We work with the HOA and management to camera stacks from cleanouts, clear buildup, and repair or line damaged sections, limiting wall access to specific points. Residents get notice in advance, and the association gets a documented record.
Between the harbor, the condo towers, and the townhome rows off Admiralty Way and Via Marina, Marina del Rey's plumbing is dense, shared, and busy. Tight setbacks and paved common areas leave little room to dig, which is why no-dig methods get serious consideration here. Marina del Rey is a short drive from our Mar Vista base, and we're available 24/7 for backups.
Not sure what your line needs? We camera it first, then quote a flat rate.
Get a Free Quote| Detail | Marina del Rey |
|---|---|
| Area | Marina del Rey, CA 90292 |
| Jurisdiction | Unincorporated Los Angeles County |
| Permits | LA County Public Works Building & Safety |
| Typical access | A cleanout or fixture; targeted excavation only when needed |
| First step | Camera inspection with a copy of the recording |
| Pricing | Flat-rate, in writing, before work starts |
| Availability | 24/7, including weekends and holidays |
| License | CSLB #974600, insured |
| Languages | English and Spanish |
In Marina del Rey, the permitting agency is LA County Public Works, and a County inspector signs off on the work. Under County Code 20.24.080, the property owner maintains the lateral, and LA County Public Works says that responsibility covers its entire length, including the part under the street. If your address turns out to be City of LA, we'll switch the permit to LADBS and tell you before work starts.
Example scenario below is illustrative, based on common situations we see. Details vary by property; not a specific customer.
A Marina del Rey condo's second-floor units keep getting kitchen backups from the stack serving six floors.
We camera, jet, and descale the kitchen stack, then line a cracked section from a cleanout.
The backups stop, no walls are opened, and the HOA sets up scheduled jetting.
Licensed by the CSLB (#974600) and insured, New Pro has been fixing Westside sewer lines, including in Marina del Rey, since 2010. You'll know the scope, schedule, and total cost in writing before we start. We're available 24/7, including weekends and holidays, when a backup can't wait.
Also serving neighborhoods near Marina del Rey: Ocean Park, Venice, Playa Vista, Playa del Rey. See all Westside service areas.
The Bottom Line
A stack problem is a building problem. We camera it, clear it, and repair it with as little wall opening as possible, coordinated with management and residents.
If you’re on a lower floor, waste from units above can back up into your fixtures when the stack is clogged below you. Vertical stacks in condo buildings carry drainage from multiple units and shared kitchens. Failures usually show up as backups in the lowest unit. See our multi-unit plumbing page.
In most condo buildings, stacks are common elements, but the CC&Rs define responsibility. Cast-iron stacks common in Marina del Rey buildings from the 1960s and 1970s are past their service life and often better lined than repeatedly repaired. See our cast-iron corrosion page.
Not always. Many stacks can be cleaned and lined from cleanouts. When access is needed, we limit it to specific points. Stack work in an occupied building requires resident notice, water shutoff coordination, and unit access. We handle the notice language and staging with property management.
Often, yes. Lining can seal cracks and corrosion throughout the stack. In unincorporated Marina del Rey, stack work is a plumbing permit item through LA County Public Works Building & Safety. See the County’s site for the permit path.
Yes. Many 1960s–1970s buildings still have original cast-iron stacks, which are often scaled or cracked after fifty-plus years. For Marina del Rey condo stacks, we coordinate access, resident notice, and staging with property management. See our multi-unit plumbing page.
This page was written by the New Pro Plumbing content team and reviewed for technical accuracy by Miguel Lopez, owner and California-licensed plumber (CSLB #974600). Agency rules are summarized from the official sources above; programs and requirements can change, so confirm current details with the agency. Nothing here is a quote. We confirm scope and pricing in writing before any work begins.
What’s new: September 2026, first publication.
In a multi-story building, the sewer stack carries waste from every floor. When it fails, the problem shows up in more than one unit.
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