How to Price a Sewer Line Replacement | Reddit & LinkedIn

A sewer line replacement is priced on what you cannot see. The pipe itself is cheap. The cost is in the excavation, the depth, the soil, and putting the surface back the way you found it. Two jobs of the same length can differ by thousands because one runs under a driveway and mature landscaping and the other runs through an open side yard.

Scope the line first. Run a camera, locate the run to the city main, and confirm the depth and slope. That single step tells you whether the job is a one-day open trench or a multi-day dig with shoring, and it is the difference between a profitable bid and a loss.

Open-trench excavation is cheaper on material and equipment but expensive on restoration, because you are trenching the whole run and rebuilding the surface. Trenchless methods like pipe bursting or lining cost more per foot but save the driveway, the patio, and the landscaping, which often makes them cheaper overall on a finished lot.

Price both when the job could go either way, and let the client choose with the restoration cost in front of them. Showing the two side by side wins trust and usually the job.

• Open trench: lower equipment cost, higher restoration cost.
• Trenchless: higher per-foot cost, minimal surface damage.
• Deep runs and high water tables push toward shoring and dewatering.
• Runs under driveways and hardscape favor trenchless.

Price excavation by the crew day, not just the foot. Include the excavator rental or ownership cost, the operator, laborers, spoils haul-off, and bedding material. Deep trenches need shoring and possibly dewatering, both of which are day-rate costs that do not show up in a per-foot number.

Then add restoration labor: concrete flatwork, asphalt patch, sod, or landscaping. Restoration is often a third or more of the total, so estimating it as an afterthought is how sewer jobs lose money.

Sewer work almost always needs a plumbing or excavation permit and a connection inspection at the main. If the run crosses a street or a public right of way, add a right-of-way permit and traffic control, which can be significant in a busy corridor.

List each fee on its own line so the client sees the real cost, and never absorb them into labor. ContractShield lets you save permit and inspection lines as reusable items so every sewer bid starts with them in place.

Carry a written contingency for the things you cannot price from the surface: rock, a high water table, an unmarked utility crossing, or a collapsed section that widens the trench. State in the bid that conditions below a stated depth or unmarked utilities are priced as change orders.

Inside ContractShield you raise that change order from the job workspace, price it, and get a signature on the client's phone, so an underground surprise becomes billable work instead of a fight.