Bathroom Painting Cost Calculator

Painting a bathroom typically costs $200 to $700, with most standard full baths around $300 to $500. A small half-bath (powder room) might be $150–$350, a standard full bath $300–$600, and a large or master bath $500–$900+. The cost depends on the bathroom's size, what you paint (walls only; walls + ceiling; or walls, ceiling, and trim), the paint grade (mildew-resistant bath paint costs a bit more than standard), the wall condition (mildew, moisture damage, or patching add prep), and extras like the vanity, mold treatment, or re-caulking. Bathrooms cost more per square foot than open rooms because they're small and full of fixtures to cut around. Enter your size, scope, paint grade, and condition in the calculator to anchor the estimate.

Because bathrooms see high humidity and moisture, the paint matters more than in a dry room. Use a moisture- and mildew-resistant paint formulated for bathrooms — many brands offer 'bath' or 'kitchen and bath' lines with additives that inhibit mold and stand up to steam. Choose a higher sheen too: satin, semi-gloss, or gloss resist moisture, wipe clean easily, and fight mildew far better than flat/matte (semi-gloss is popular for bath walls and trim; satin for a slightly softer look). Prime bare, patched, or stained spots first with a stain-blocking or mold-resistant primer. The ceiling, which gets the most steam, benefits from a mildew-resistant ceiling paint. Quality bath paint costs a little more but is well worth it. The calculator's grades are standard, mildew-resistant, and premium — mildew-resistant or premium is recommended for bathrooms.

It surprises people, but small bathrooms carry a high per-square-foot rate for a few reasons. First, fixed costs spread over little area — setup, masking, protecting fixtures, cleanup, and the painter's minimum charge get divided across very few square feet. Second, bathrooms are detail-intensive: they're packed with obstacles to cut around — vanity, sink, toilet, mirror, medicine cabinet, towel bars, tile, tub/shower, exhaust fan, lights, and outlets — and that careful edging is slow compared to rolling big open walls. Third, tight spaces (behind the toilet, in corners, over the tub) are awkward and slow. Fourth, bathrooms often need more prep (mildew, moisture, caulking). So the total is low because the room is small, but the cost per square foot is high — which is why the calculator uses a higher rate and a minimum charge.

Usually, yes — and bathroom ceilings often need it more than the walls. They take the brunt of the steam that rises from showers and baths, so they're especially prone to mildew, staining, discoloration, and peeling, and may need repainting even when the walls still look fine. Repainting with a mildew-resistant ceiling or bath paint refreshes the look and protects against moisture. Since the painter is already set up, doing the ceiling at the same time is efficient — and a dingy or stained ceiling undermines freshly painted walls. You can do walls only to save if the ceiling is in good shape, but if it shows mildew, water stains, or peeling, include it (and treat the mildew and prime first). The calculator lets you choose walls only, walls + ceiling, or walls + ceiling + trim.

Treat it first — painting over mildew doesn't kill it, and it will grow through and ruin the new paint. Step one: fix the moisture source if you can (poor ventilation, a leak) and make sure the exhaust fan works, since mildew returns without addressing the humidity. Step two: clean and kill it — scrub affected areas with a mildew-killing cleaner or diluted bleach (ventilate, wear gloves) and let it dry fully. Step three: for stains or stubborn spots, apply a stain-blocking, mold-resistant primer to seal the surface. Step four: paint with a mildew-resistant bath paint. Minor surface mildew is handled by cleaning, priming, and the right paint; extensive or black mold (especially behind walls) may need professional remediation first. The calculator offers a mold-treatment add-on and a heavy-prep condition option for this.

Yes — it's a popular DIY since the room is small and materials are cheap, and doing it yourself saves the labor that makes up most of a pro quote; a handy homeowner can knock it out in a weekend. The catches are bathroom-specific: lots of slow cutting-in around the vanity, mirror, fixtures, tile, and tight spaces; the need to clean off soap film and grime so paint adheres; treating any mildew, caulking gaps, and priming patches; using the right moisture-resistant paint in a higher sheen; and ventilating during and after. Keys to a good result: thorough cleaning and prep, careful taping or removing hardware, quality bath paint and a good cut-in brush, and patience on the detail work. For heavy mildew/moisture damage, a flawless finish, or to skip the fiddly work, a pro is fast and clean. The calculator estimates professional cost to compare against DIY.

The base covers the walls (plus ceiling and trim if you select those in the scope), while the vanity and sometimes the door are handled separately — which is why the calculator splits them out. The scope options let you include just walls, walls + ceiling, or walls + ceiling + trim/doors, so trim and the door can be in the base job if you choose that scope. The vanity cabinet is usually a separate task because it needs different prep — cleaning, sanding, priming, and a durable cabinet/trim paint for a smooth finish — so it's an add-on. Re-caulking around fixtures is another add-on. When comparing quotes, clarify exactly which surfaces are included (walls, ceiling, trim, door, vanity). A full refresh often covers all of them.

Bathrooms are quick because they're small — typically a half-day to a full day for a pro, or a weekend for a DIYer, including prep and drying. Prep (cleaning, treating mildew, taping or removing hardware, caulking, priming patches) takes time and is important. The actual rolling is fast, but the detailed cutting-in around all the fixtures and tight spots is the slow part. Two coats with drying time between them adds to the schedule, and bathroom humidity slows drying — run the fan. A simple walls-only repaint of a small bath in good shape can be a few hours plus drying; a full job (walls, ceiling, trim, vanity) with prep and mildew treatment fills a day or spreads over two. The calculator estimates cost; allow extra drying time before heavy use.

Skip flat/matte in a bathroom — it absorbs moisture and is hard to wipe. Go with a higher sheen that repels water and cleans easily. Satin is a good balance: some moisture resistance and washability with a soft, low-glare look that hides minor wall imperfections, popular for bath walls. Semi-gloss is more moisture- and stain-resistant and very wipeable, the classic choice for trim, doors, and high-moisture or kids' bathrooms (though it shows wall flaws more). Gloss is the most durable and water-resistant but highly reflective, usually reserved for trim and cabinets. Many people use semi-gloss on trim/doors and satin or semi-gloss on the walls, with a mildew-resistant flat/eggshell ceiling paint formulated for baths. The right sheen plus a mildew-resistant formula is what makes bathroom paint last.

Only if you fix the cause first. Peeling, bubbling, and cracking paint in a bathroom is almost always a moisture problem — too much humidity with too little ventilation, water getting behind the paint, or paint that was applied over a dirty, damp, or unprimed surface. Simply repainting over it traps the moisture and the new paint will fail the same way. The fix: improve ventilation (a properly vented exhaust fan run during and after showers), scrape and sand all the loose paint back to a sound edge, address any leak or water source, treat mildew, prime bare and patched areas with a moisture-tolerant primer, and repaint with a mildew-resistant bath paint in a higher sheen. That's the 'heavy prep' scenario in the calculator — budget for the extra prep, because it's what makes the result last.