Water damage repair
The rebuilding is the visible half and the second half. Everything depends on the drying that comes first, seal a wall over framing that is still holding moisture and a Maryland spring will turn a finished plumbing repair into a remediation quote.
Nothing gets closed until the readings say so
Framing, subfloor and the bottom plate of a stud wall are checked with a moisture meter against a dry reference elsewhere in the house. Surfaces feel dry long before the material behind them is, and drywall installed over framing that still holds moisture traps it with nowhere to go.
What usually needs replacing
Padding under carpet, essentially every time. Drywall wet more than a hand width above the floor, because it draws water upward and loses its integrity. Any insulation in a cavity that took water. And anything made of particleboard or MDF, cabinet bases, vanity carcasses, some underlayments, which swells once and never comes back.
Solid timber, plywood, concrete and block normally dry out and stay put. The genuine coin toss is engineered flooring: some of it dries flat, and some of it separates into layers a month after everyone declared the job finished.
Two trades, sometimes two invoices
Mitigation and drying is one specialty. Rebuilding, drywall, paint, flooring, trim, is general contracting. Some firms do both, some do only the first and hand the second off. Worth asking early, because a quote covering only the drying looks far cheaper than one covering the whole job.
Older Maryland housing complicates it
Plaster over wood lath does not behave like drywall. It holds water longer, it can look intact while the lath behind it stays saturated, and patching it well is a different skill from hanging board. In the rowhouse belt east of Baltimore and in old Ellicott City, that is what is on the walls, and it is worth confirming that whoever quotes the rebuild has done it before.
One more thing worth knowing
- What actually gets rid of mold for good? Wiping down a visible patch deals with what is already there, not with why it grew. If the framing behind that patch is still damp, the same spot comes back. Getting rid of it for good starts with the drying described above, not with whatever is used to clean the surface afterward.