At design, before permits if possible. Drain routes, venting, and capacity drive what the design can do, and finding a conflict on paper costs nothing. We read plans and walk spaces for exactly this reason.

That is math, not hope: fixture counts, drain sizing, water heater recovery, and gas load all have numbers. We run them early and tell you plainly whether the existing systems carry the new load or need upsizing in the budget.

Yes, our trade’s permits and inspections are ours to pass, and we do, the first time, because rough-in gets tested before the inspector arrives. Your project file gets the documentation.

Sewer connection at the right depth and route, adequately sized water service, gas for appliances if used, water heating for the unit, and full fixture rough-in. Lot layout decides the cost more than the floor plan does, which is why we scope first.

The open-wall moment is the cheapest repipe you will ever be offered, and we will tell you honestly whether your pipe deserves it. Sixty-year-old galvanized under a brand-new kitchen is a decision someone regrets later.