The expense related to plumbing for a house that spans 1,500 square feet in San Dimas can diverge considerably. This divergence can be traced to several factors, including but not limited to, the system's monodial complexity, the quality of the plumbing materials, and the per-hour rates charged by local plumbers. If your domiciliary plumbing is relatively new, however, and not at all rickety, then you might consider the following figures: For a "rough-in," that is to say, the plumbing in a shell of a house without any finishes, the cost might run between $3,600 and $6,800. For a plumbing system in a house that is under electrical work, stucco, wallboard, and otherwise without the outer shell, you might expect to pay between $4,000 and $6,000 for the under-plumbing and a decent electrician to finish the job once the plumbing work is done.