Sewer Line Replacement cost in New Hampshire (2026)
Across New Hampshire, sewer line replacement varies by your city's labor rates, climate and permit fees. Select your city below for a localized estimate.
sewer line replacement typically falls in this range across 3 New Hampshire cities — your exact estimate depends on local rates.
| City | Typical 2026 range |
|---|---|
| Manchester, NH | $3,600 – $13,500 |
| Nashua, NH | $3,600 – $13,500 |
| Concord, NH | $3,600 – $13,500 |
Sewer Line Replacement cost by type in New Hampshire
Typical 2026 ranges, localized to New Hampshire labor, climate and permits.
| Type | New Hampshire 2026 range |
|---|---|
| Trenchless lining (CIPP) | $4,700 – $13,500 |
| Pipe bursting | $5,800 – $14,600 |
| Traditional excavation | $3,600 – $14,600 |
Cheapest time for sewer line replacement in New Hampshire
True emergencies pay full rate. But planned projects — a repipe or sewer-line replacement — can be scheduled in a slower month for slightly better pricing and more attentive crews.
Cost calculator
Sewer line cost by method in New Hampshire
Enter the run length (most home laterals are 40–100 ft, house to street). Per-foot ranges are localized to New Hampshire labor.
| Method | Per foot | Total (60 ft) |
|---|---|---|
Open-trench (dig & replace) Traditional dig-up. Cheapest per foot but adds surface restoration (lawn, driveway, patio). | $53–$131 | $3,150–$7,900 |
Pipe bursting (trenchless) Pulls a new pipe through the old one via two access pits — minimal digging. | $63–$210 | $3,800–$12,600 |
CIPP lining (cure-in-place) A resin liner cured inside the existing pipe. No trench, but the pipe must be intact enough to line. | $84–$263 | $5,050–$15,750 |
Add surface restoration for open-trench (concrete/driveway $2–$25/sq ft) and permits where a run crosses into the public right-of-way. Per-foot ranges are national benchmarks localized to New Hampshire labor — a research estimate, not a quote.
Sewer Line Replacement in New Hampshire
How much does sewer line replacement cost in New Hampshire?
Across New Hampshire, sewer line replacement typically runs $3,600–$13,500 in 2026, depending on your city's labor rates, climate and permit fees. Manchester is the most affordable (around $8,550) and Concord the most expensive (around $8,550).
Which New Hampshire city is cheapest for sewer line replacement?
Manchester has the lowest typical sewer line replacement cost in New Hampshire at about $8,550, while Concord is the highest at about $8,550 — a gap driven mostly by local labor rates.
How do other Plumbing options compare in New Hampshire?
In Manchester, New Hampshire's largest market, sewer line replacement typically runs $3,600–$13,500. For comparison, whole-house repipe runs $3,950–$8,900. Each option has its own New Hampshire cost guide with city-by-city pricing.
Why does sewer line replacement cost vary across New Hampshire?
The three levers are local labor rates, climate zone and permit fees. In this cold region, the frost line is deeper, so sewer and water lines are buried deeper, which raises excavation cost for sewer line replacement. Budget extra for excavation depth — it's a bigger cost driver here than in milder climates.
When is the cheapest time to replace in New Hampshire?
The best window is off-peak winter for planned work, when demand drops and installers discount to keep crews busy — typically Around 5% off peak pricing. The priciest time is an emergency job during anytime it becomes an emergency.
Does New Hampshire require a permit for sewer line replacement?
Most New Hampshire cities require a permit for sewer line replacement; it typically adds around $275 and is already included in the estimates above.
Other Plumbing projects in New Hampshire
Weighing your options? Typical 2026 ranges below are localized to Manchester, New Hampshire's largest market — open any project for the full statewide breakdown.