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Plumbing & Repipe Cost in Maine (2026)

Plumbing repipe in Maine typically runs $5,200–$13,400 for a whole-house 2-bath PEX repipe, with Type-L copper the dominant retrofit choice and the Uniform Plumbing Code (UPC) as the adopted enforcement basis. Buried service-line trench depth must clear the 60-inch design frost line. Maine's 60+ inch frost line is the deepest in the lower 48 along the Aroostook County border, forcing service-line trenches deeper than basement footings in Bangor, Presque Isle, and the North Woods — and the state's roughly 130,000 properties on private wells frequently pull from arsenic-bearing bedrock fractures requiring point-of-entry treatment that drives every new well install above $7,000 before any fixture work begins.

State Maine
Cities Covered 1
Typical whole-house 2-bath PEX repipe $5,200 – $13,400
BLS plumber wage $27.95/hr

Maine water-quality & freeze drivers

  • IECC climate zone: 6A-7 — drives freeze-protection scope on supply lines
  • Frost-line trench depth: 60-inch design minimum for buried water service
  • Water hardness profile: Soft (under 3.5 grains/gallon) — minimal scaling, no softener required
  • Dominant retrofit supply material: Type-L copper — dominant on retrofits in high-soft-water and pre-1990 housing stock
  • Adopted plumbing code basis: Uniform Plumbing Code (UPC) — IAPMO model adopted statewide
  • Lead service line risk tier: Moderate — partial pre-1986 service line inventory under utility review

Maine licensing & permits

  • License status: Statewide license required
  • License board: Maine Plumbers' Examining Board (Master / Journeyman / Apprentice / Trainee) (official site)
  • Permit: town plumbing permit required; subsurface wastewater disposal permit through DEP

How plumbing and repipe costs vary in Maine

State-specific code or insurance rule: Maine 32 M.R.S. §3401 created the Plumbers' Examining Board as one of the oldest standalone plumbing-only licensure bodies in New England, and the state's Subsurface Wastewater Disposal Rules (10-144 CMR Chapter 241) require a state-licensed Site Evaluator — a separate credential not used in most states — to design and certify every private septic system before any plumbing rough-in inspection.

Cities in Maine

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Portland, ME

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More state guides

Pricing ranges reflect Maine market labor (BLS OEWS plumber mean $27.95/hr) and Woogoro regional cost modeling. For the most localized estimate, see your nearest city page above.