Bathrooms are the most popular renovation project in the US, and for good reason — a dated bathroom drags down your entire home’s appeal. The challenge is that bathrooms pack plumbing, electrical, waterproofing, and tile work into the smallest room in the house, leaving zero margin for error.
Typical range for a full bathroom remodel, though costs vary significantly by region. Half-bath refreshes can be done for $3,000–$8,000.
See metro-level cost data →Understanding Bathroom Remodel Scope
Not all bathroom remodels are equal. Understanding your scope helps set the right budget:
Cosmetic refresh ($3,000–$8,000): New vanity, faucet, mirror, lighting, paint, and accessories. No plumbing or layout changes. Can often be completed in a weekend with a skilled handyman.
Standard remodel ($8,000–$25,000): New tile (floor and shower/tub surround), new vanity, toilet, fixtures, lighting, and possibly a new tub or shower base. Plumbing and electrical stay in the same locations.
Full gut renovation ($20,000–$40,000+): Everything is stripped to the studs. Plumbing and electrical are relocated, new layout, custom tile work, possibly enlarging the room. In high-cost metros like NYC, SF, or LA, full gut renovations can reach $60K+. Requires permits and multiple inspections.
The Waterproofing Priority
If there is one thing that separates a bathroom remodel from every other renovation, it is waterproofing. Water damage from improperly waterproofed showers and tubs is the #1 cause of bathroom remodel failures, according to contractor reports on both Reddit and Houzz forums.
Every shower and tub surround must have a continuous waterproof membrane behind the tile. Options include Schluter Kerdi membrane, RedGard liquid membrane, or traditional hot-mop. The membrane, not the tile or grout, is what keeps water out of your walls. Skipping this step leads to mold, rot, and a complete redo within 3–5 years.
The most widely used liquid waterproofing membrane for showers and tub surrounds. Rolls on easily, dries to a flexible rubber membrane. One gallon covers approximately 55 sqft.
Step-by-Step Bathroom Remodel Process
Measure your bathroom precisely. If you are keeping the same layout, fixture selection is straightforward — match drain locations. If you are changing the layout, work with a designer to plan plumbing rough-in locations before ordering anything.
Plumbing and electrical work require permits in virtually every US jurisdiction. Order tile, vanity, toilet, and fixtures early — tile alone can take 2–4 weeks to arrive for specialty items.
Gut the room back to studs if doing a full remodel. This is when you discover surprises — rot, old galvanized pipes, or inadequate subfloor. Budget for the unexpected at this stage.
Move or add supply lines, drain lines, and vent stacks. Install new circuits for GFCI outlets, exhaust fan, and heated floors if applicable. All rough-in work must pass inspection before closing walls.
Install cement backer board (Hardie, Durock) on walls and the shower floor. Apply waterproof membrane to all wet areas. This step is inspected in some jurisdictions — check with your building department.
Shower walls first, then shower floor (with proper slope toward the drain), then floor tile. Proper thin-set coverage is essential — 95%+ coverage on shower walls (per TCNA/ANSI A108.5 standards) prevents hollow spots that crack later.
Set the toilet, install the vanity, hang the mirror, connect the faucet, and install lighting. Caulk all joints between tile and fixtures with silicone (not grout) — silicone remains flexible and prevents cracking at transitions.
- Plumbing permit for new or relocated fixtures
- Electrical permit for GFCI outlets, exhaust fans, or lighting changes
- Building permit if modifying walls or structural elements
- Waterproofing inspection for shower pan and wet areas
Material Selection Guide
Tile
| Material | Cost/sqft | Durability | Best For |
|---|---|---|---|
| Ceramic | $1–$5 | Good | Budget floors and walls |
| Porcelain | $3–$10 | Excellent | Shower floors, high-traffic floors |
| Natural stone | $5–$25 | Varies | Accent walls, luxury baths |
| Large-format porcelain | $4–$12 | Excellent | Modern, minimal grout lines |
Larger tiles mean fewer grout lines, which means less maintenance and a more modern look. But large tiles require a perfectly flat substrate. For shower floors, stick with smaller mosaic tiles (2x2 or less) so the installer can properly slope the floor toward the drain.
Vanities
- Stock vanities ($200–$800): Available immediately at Home Depot, Lowes. Limited sizes (24”, 30”, 36”, 48”, 60”).
- Semi-custom ($800–$2,500): Choose finish, hardware, and top from a catalog. 3–6 week lead time.
- Custom ($2,500–$8,000+): Built to your exact specifications. 6–12 week lead time.
Toilets
The toilet is the most-used fixture in your bathroom. Two-piece toilets ($150–$400) are the standard. One-piece toilets ($300–$800) are easier to clean. Wall-hung toilets ($500–$1,500+) look modern and simplify floor cleaning but require a carrier frame inside the wall.
Choose a toilet with at least a 500-gram MaP flush rating (1,000g is the maximum possible score). WaterSense certification requires 350g, but 500g+ provides excellent real-world performance. Most major brands (TOTO, Kohler, American Standard) publish MaP scores for their models.
Amazon's top-selling showerhead for renovations. The magnetic docking system makes it easy to detach and reattach. Six spray settings and simple DIY installation.
Ventilation Matters More Than You Think
Building code (IRC) requires an exhaust fan in any bathroom without an operable window, rated at a minimum of 50 CFM for intermittent use or 20 CFM for continuous use. Even if your bathroom has a window, you should install a fan regardless. Proper ventilation prevents mold, protects your paint and caulk, and extends the life of every surface in the room.
Best practice sizing (HVI recommendation): For proper moisture control, the Home Ventilating Institute recommends sizing at 1 CFM per square foot of bathroom, with a minimum of 50 CFM. For bathrooms over 100 sqft, add 50 CFM for each enclosed toilet, shower, or tub. These recommendations exceed code minimums but are well worth following.
Realistic Timelines
| Scope | Duration |
|---|---|
| Cosmetic refresh | 3–5 days |
| Standard remodel | 3–6 weeks |
| Full gut renovation | 8–12 weeks |
The most common timeline buster is tile work. Custom tile patterns, mosaic accents, and large-format tile all take significantly longer to install than standard subway tile. A complex shower tile job alone can take 5–7 days.