Most homeowners have never gone through a bathroom remodel before. The process can feel opaque — a lot of things happen behind walls and under floors that you never see, and it’s hard to know whether the project is on track or whether something important was skipped. This guide walks through every phase of a bathroom remodel in plain language so you know what to expect, what questions to ask, and how to tell whether the work is being done right.

Phase 1: Design and Planning

Every successful bathroom remodel starts with decisions made before a single tool is touched. This phase includes:

Don’t rush this phase. The time you invest in making decisions now is time saved — and money saved — during construction.

Phase 2: Permits and Material Ordering

Once the design is locked in and the contract is signed, two things happen simultaneously: your contractor pulls the required permits, and materials are ordered.

In El Monte, permits are required for any work involving plumbing changes, electrical work, or structural modifications. Your contractor should handle the permit application as part of their scope — this is standard for licensed contractors. Permit turnaround in LA County typically runs 1–3 weeks depending on complexity.

Materials — especially tile and vanities — can have lead times of several weeks if special ordered. This is why material decisions need to be made before work begins, not during. A good contractor manages the ordering timeline to avoid project delays from waiting on materials.

Phase 3: Demolition

Demo day is when the project becomes real. Your contractor removes the existing bathroom down to whatever the scope requires. For a full remodel, that typically means:

A good contractor protects the rest of your home during this process — plastic sheeting on doorways, floor protection in hallways, and careful debris removal to avoid tracking damage through your home. Ask about this in advance if it matters to you.

What Hidden Conditions Look Like

When walls open up in older El Monte homes, it’s common to find water damage around the tub or shower area, galvanized pipes that are corroded or restricted, wiring that doesn’t meet current code, or subfloor damage where the old toilet seal failed. A professional contractor documents what they find and brings it to you with options before proceeding. This is normal — it’s part of remodeling older homes. What matters is how your contractor handles it.

Phase 4: Rough-In Work (Plumbing and Electrical)

With walls open, your licensed plumber and electrician update everything behind the scenes:

Rough-in work is inspected by the city building department before walls are closed. This inspection is part of the permit process and confirms the work is done correctly. Never let a contractor close the walls before the rough-in inspection is signed off.

Phase 5: Waterproofing

Waterproofing is the most critical phase of any shower or wet area installation — and the phase most likely to be done inadequately by inexperienced or cost-cutting contractors.

After the framing passes inspection, cement board is installed in wet areas (standard drywall is not moisture resistant enough for showers). A waterproof membrane is then applied over the cement board — typically a sheet membrane, liquid-applied membrane, or foam tile backer system. This membrane is what actually keeps water out of the wall assembly.

Corners, seams, and the floor-to-wall transition are the most critical areas. These get extra waterproofing attention because they’re where failures most often occur. Some jurisdictions require a waterproofing inspection before tile is applied.

Phase 6: Tile Installation

With waterproofing complete, tile installation begins. The order is usually: floor tile first, then shower or tub walls, then any accent tile, niches, or decorative features. Key elements of professional tile work include:

Tile work can take several days to a week depending on the scope. Thinset and grout need adequate cure time before the shower is used.

Phase 7: Fixture and Finish Installation

Once tile is complete and cured, finish work begins:

This is the phase where the bathroom comes together visually. It’s also where small details — caulk lines, fixture alignment, door swing clearance — get addressed. Don’t rush the punch list.

Phase 8: Final Inspection and Walkthrough

The city inspector returns for a final inspection to confirm all permitted work was completed correctly. After that sign-off, your contractor schedules a walkthrough with you.

The walkthrough is your opportunity to identify anything that isn’t right before you make final payment. Go through the space systematically: check that grout lines are consistent, caulk is clean, all fixtures work properly, no tile is cracked or loose, doors and drawers open and close correctly, and the shower is properly sealed. A legitimate contractor will address any punch list items before the job is considered complete.

Final payment should be made after the walkthrough, not before. This is standard practice and protects your interest as a homeowner.

Questions about your El Monte bathroom remodel? Call Full Quality Bathroom Remodeling at 626-542-1706 for a free in-home estimate and straight answers on cost and timeline.