Septic system all-in price for a new cottage near Shediac?

A full conventional septic system for a new cottage near Shediac runs roughly $10,000 to $25,000 based on published price guides read in September 2026, with excavation alone accounting for $3,000 to $12,000 of that. Those are national figures; few New Brunswick prices are published, so a local quote is the only reliable number for your lot.

Several things move the price. If rock turns up, a hydraulic breaker on the excavator runs $200 to $300 per hour. Haul distance matters too: if the spoil has to travel far, trucking adds to the bill. The licensed installer chooses the system type and field size after a test pit inspection, and that design drives how much excavation is needed before anyone picks a machine.

What the province requires here

A licensed installer must apply for provincial approval before any work starts. The application includes soil conditions from a test pit, separation distances and a flow estimate, and carries a $150 application fee. A provincial inspector assesses and approves the design first; the installed system must be available for inspection before it is covered. The excavation contractor can dig the test pits, the tank hole and the field once the licensed installer arranges it, but the installer is responsible for the system. Hire the licensed installer for the system itself.

If the cottage is within 30 metres of a watercourse or wetland, a Watercourse and Wetland Alteration permit from the province is required before any clearing, machine work or ground disturbance. That 30 metres is measured horizontally from the top of the bank on the ground, not from a map. The WAWA permit fee is $25 for a single alteration. For the building and development permit, check with Plan 360, the Southeast Regional Service Commission, as they issue permits for Shediac.

Before the machine arrives, request a locate through Info-Excavation (Click Before You Dig) at least three working days ahead, and make a separate request to NB Power at least five business days ahead. NB Power checks only for NB Power-owned underground lines; private lines run to a garage, shed or existing structure are yours to find and mark. Ask your municipality whether Info-Excavation covers the municipal water and sewer lines on your lot.

A fair quote names the machine rate (a mini excavator runs $65 to $150 per hour; a standard machine $150 to $250 per hour), how rock is priced if it is hit, where the spoil goes and who pays trucking, and what backfill material is included. Ask for a WorkSafeNB clearance certificate before work starts. Under the Construction Remedies Act, hold back 10% of the contract price for 60 days after substantial performance is certified.

The line worth pinning down in writing is how rock, haul distance and backfill material are priced, because those three items are where a low headline number can grow.