Full plumbing scope for custom homes, ADUs, and additions, from permit to final inspection. A licensed Master Plumber your GC can count on from blueprint to occupancy.
As of February 2025, Massachusetts law requires all municipalities to permit accessory dwelling units as of right in single-family zones. No special use permits or zoning board variances required in most cases. Homeowners who were previously blocked can now build. And every ADU needs licensed plumbing.
On a custom home or ADU, the plumber isn't just there for a day to set a few fixtures. The full plumbing scope covers every system that touches water, gas, or drainage, from the first rough-in before framing closes to the final connections after cabinets are set.
ECPH partners with general contractors and designers across Essex County MA and southern NH on complex residential builds. We've been through the coordination required more times than we can count, so we review plans before rough-in starts, not after problems appear. Drain locations, fixture rough-in heights, gas supply sizing. We flag these in the design phase so we can come up with solutions before the project starts.
We also work directly with homeowners on custom builds and ADUs where there's no GC. In those cases we coordinate directly with framing, electrical, and HVAC contractors. You get Ian's license backing the work and a crew that communicates like a partner, not a subcontractor waiting on instructions.
Whether it's a detached ADU over the garage, a first-floor addition with a new bathroom, or an in-law suite attached to the main house, the plumbing scope scales with the project. ECPH handles bathroom plumbing, kitchen plumbing, water heater installation, and heating systems on additions and ADUs, including the gas supply tie-in from the main house.
ADU plumbing connects to the home's existing supply and drainage in most configurations. We assess the tie-in point, size the connections appropriately, and coordinate with the building inspector on what the permit requires. No surprises at final inspection.
Every phase has a specific scope. Missing one creates problems in the next. Here's how we map onto a typical new build timeline.
We review the architectural set and coordinate rough-in requirements with the GC before work starts.
Drain, waste, and supply lines installed before slab or framing. Inspected and approved before concrete.
All in-wall supply, drain, and vent piping installed before insulation and drywall. Rough-in inspection passed.
Water heater, boiler, and gas piping installed and pressure-tested. Coordinated with HVAC and electrical.
All fixtures connected, trim installed, appliances hooked up. Final inspection and certificate of occupancy.
PEX home-run distribution, labeled hydronic zones, organized shutoffs, and clean copper runs. This is what your inspector, GC, and homeowner see when the walls are still open.
ECPH works with residential GCs on custom homes, additions, and ADUs across Essex County MA and southern NH. We show up on time, communicate clearly, and pull our own permits. See our full service range.
As early as possible. We want to review plans before rough-in starts, not after walls close. For new construction, the first plumbing touchpoint is typically underground rough-in before the slab, but plan review happens before that. The sooner we're in the loop, the fewer change orders show up later.
Both. We work regularly with GCs and designers on residential builds, and we also work directly with homeowners who are owner-building or managing their own subcontractors. The coordination is different, but the license and quality standard is the same. Reach out and we'll figure out the right approach for your project.
Both. ADUs (whether detached, attached, or interior conversions) require the same permit and inspection process as new construction. We handle the full plumbing scope on ADUs, including the supply and drain tie-in from the main house. With the 2025 ADU law expanding what's possible in Massachusetts, this is an area of work we handle for homeowners and GCs across Essex County.
Yes. Ian holds Master Plumber licenses in both Massachusetts and New Hampshire, plus NH Gas Piping and Mechanical licenses. The same crew covers Essex County MA and the southern NH Seacoast with no subcontracting across the state line. See our service area pages for Salisbury, Newburyport, Ipswich, West Newbury, and Hampton NH.
New construction plumbing starts from scratch, with no existing systems to work around. Renovation plumbing has to interface with, extend, or replace what's already there, which adds diagnostic complexity. ECPH does both. If your project is a full gut renovation of an existing home, our bathroom renovation plumbing and kitchen plumbing pages cover that work specifically.
Whether you're breaking ground on a custom home or adding an ADU under the new Massachusetts law, ECPH covers the full plumbing scope from blueprint to occupancy.
