If your house sewer is old, badly deteriorated, or failing in several locations, small repairs will not hold for long. Sewer line replacement provides a clean, reliable connection to the city sewer and removes a major risk from your property.
Frequent sewer backups despite repairs
Sewer line over 50+ years old (clay or cast iron)
Collapsed, crushed, or severely cracked pipe
Tree root invasion throughout entire line
Repeated repair costs exceeding replacement value
Technicians review all available sewer camera footage to map defects, measure distances, confirm depth, and identify city connection points. The replacement route is planned to maintain safe excavation paths and proper grade from building exit to city tie-in.
Full replacement requires DOT street/sidewalk opening permits and DEP sewer permits. Utility mark-outs (gas, electric, telecom, fiber) identify underground conflicts. Scheduling ensures compliance and safe excavation operations.
Controlled trenching exposes the full length of the sewer. Old clay, cast iron, or deteriorated pipe is removed completely. Trench shoring is installed where depth or soil conditions require additional support.
New sewer pipe is placed with correct bedding and slope to ensure unimpeded flow. Sections are joined using mechanical couplings rated for underground sewer systems. Cleanouts and a new house trap are installed when required by NYC code.
The new sewer connects to the city line or house trap with code-compliant fittings. Water tests confirm proper flow and alignment. Required DEP/DOB inspections are completed before closure.
Trench is backfilled in compacted layers to prevent settlement. Sidewalk slabs, asphalt, pavers, gravel beds, or landscaped areas are restored to safe, compliant condition. Final checks ensure proper finish and site cleanup.
Not every sewer problem needs a new line. We run a camera through the pipe first and show you the footage, so the decision is based on what is actually in the ground.
For the full breakdown, read our guide on when to repair vs replace a sewer line in NYC. If a spot repair is the right answer, see sewer line repair.
Every quote is built from the same few factors, and we walk you through each one before work starts:
We quote after the camera inspection, so the price reflects your line, not a guess. Request a sewer line replacement quote or call (718) 965-3500.
Our crews replace house sewers in Brooklyn, Queens, Manhattan, the Bronx and Staten Island, from brownstones and row houses to multi-family and commercial buildings.
There will be excavation along the route of the line. We keep trenches as narrow as practical and restore surfaces once work and inspections are complete.
Yes. Combining sewer and water work often saves time and reduces overall disruption and cost.
In New York City, the property owner is. The house sewer is private from the building all the way to the connection at the city sewer in the street, including the section under the sidewalk and roadway. DEP maintains the city sewer itself. That is why the repair or replacement falls to the owner, and why work that reaches the street needs a licensed Master Plumber and a DOT street-opening permit.
It depends on the length and depth of your line and where it runs. After the camera inspection we map the route, and your schedule comes with the quote, including permit timing and when the sidewalk or street will be restored.
If you are tired of constant backups and short-term fixes, it may be time for a full sewer replacement designed to last.
(718) 965-3500
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What we can show you in writing before any work starts.
Yes. Lady Liberty Contracting Corp is fully licensed, bonded and insured for water main and sewer work throughout New York City. Certificates of insurance and licence details are available on request before any work begins.
The work is carried out under a New York City Licensed Master Plumber on our own staff, not subcontracted to another firm. That matters on permitted work, because the DEP and DOT filings are pulled under the licence of the plumber responsible for the job.
Yes. Every installation and repair carries a 10-year workmanship guarantee. If an issue arises that relates to our work, we come back and put it right.
We handle them. Permit filing, inspections and sign-off are managed in-house as part of the job, including street-opening permits and the restoration that follows.
Yes. Water main and sewer replacements are large, unplanned expenses, and payment options are available. See financing and flexible payment options.
We work on the water and sewer lines that connect a property to the city main: service line repairs and replacements, sewer laterals, excavation, DEP and DOT permitted work, and the street and sidewalk restoration afterwards. That covers residential, commercial and municipal properties across all five boroughs. We do not take on interior plumbing — in-house leaks, fixtures, heating or boiler work.
