Interior designers can sometimes coordinate contractors and subcontractors, but the exact arrangement usually depends on the project contract. Some designers manage the construction process, while others focus mainly on design and leave contractor hiring to the homeowner. It's a good idea to clarify who handles permits, scheduling, payments, materials, and any plumbing or electrical work before the renovation begins. For plumbing needs, I've also come across plumber near san diego and was impressed by the range of services they offer, including leak detection, sewer work, bathroom remodeling, and other residential plumbing solutions. Having these responsibilities clearly defined from the start can make the renovation much easier to manage and help avoid confusion over costs and timelines.