Can a bathroom really be remodeled in one week?

A small bathroom refresh can, if the scope stays in the existing footprint and everything is on site before demo. Replacing the vanity, toilet, fan, lights and floor while keeping the tub is realistic for a crew in five to seven working days. Retiling a shower, moving drains, or waiting on a custom vanity or inspection usually pushes the job to two to four weeks. The schedule depends on ordering early, not working faster.

What size exhaust fan does my bathroom need?

For bathrooms up to 100 sq ft, the common rule is 1 CFM per square foot, with 50 CFM as the minimum. In practice, an 80 to 110 CFM fan covers most bathrooms because long or bent ducts reduce real airflow. Look for 1.0 sone or less so you actually run it, use a 4 in duct for smaller fans and 6 in for larger ones, and vent it outdoors through a damper.

How much space do I need around a toilet?

Most US codes require at least 15 in from the toilet centerline to any side wall or fixture, and 21 in of clear space in front of the bowl. The National Kitchen and Bath Association recommends 18 in to the side and 30 in in front for comfort. Check the drain's rough-in distance from the back wall, usually 12 in, before ordering a toilet.

Should I choose a vanity with drawers or doors?

Drawers almost always store more usefully. A door cabinet hides a deep box where items get lost behind the plumbing, while drawers bring everything into view. Many vanities now use U-shaped top drawers that wrap around the trap. If you need tall storage for cleaning products, pair a drawer vanity with a narrow linen tower or recessed cabinet rather than giving up drawers.

Does replacing a bathroom fan need a permit?

It depends on your jurisdiction and the work involved. A like-for-like fan swap on existing wiring and duct often does not. Adding a new circuit, a new roof or wall penetration, or a fan and light combo with new wiring usually does. Ask your building department before ordering, because a required inspection has to be booked into a one-week schedule.

Is it worth keeping the old tub in a full bathroom refresh?

If the tub is level, does not leak, and the surround is sound, keeping it saves $2,000 to $6,000 and at least a week of work. Reglazing changes its color and covers chips for about $400 to $700 and dries in roughly 24 to 48 hours. Replace it if the surround is failing, the tub flexes when you stand in it, or you need a walk-in shower for accessibility.

How much does a one-week function-first bathroom refresh cost?

With a contractor, expect roughly $5,000 to $14,000 for a 40 to 70 sq ft bathroom. A drawer vanity with top and faucet costs $800 to $3,000, a toilet $250 to $700, and a quiet fan with ducting $250 to $800 installed. Floor tile installed runs $800 to $2,500, and labor for demo, plumbing, electrical and finishing makes up the rest.

Bathroom · Function First

Owner Bathroom Full Refresh Playbook

Last updated October 15, 2026

If your bathroom fails you every morning, with no drawer space, a fan that leaves the mirror fogged, a toilet jammed against the vanity and a counter too small for two people, a cosmetic update will not fix it. This 7-day full refresh replaces the vanity, toilet, fan, floor and lighting in the existing footprint, sized to real clearances. It only fits in a week if every product is on site before day 1 and the tub or shower surround stays in place unless it is failing.

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Overview

A full refresh judged by how the bathroom works

Function-first means you start from the problems, not the look. Count what needs storing, time how long the mirror stays fogged, measure the space in front of the toilet, and note where two people collide. Then choose a vanity, fan, toilet and lighting that solve those specific problems inside the current footprint. Keeping drains and the tub where they are is what makes a one-week schedule possible; moving plumbing adds inspections and usually adds weeks.

Scope & guardrails

What fits in a seven-day functional refresh

A week is tight for a bathroom with a contractor and tight-to-impossible for a weekend DIYer. Draw the line at work that can happen in one crew rotation without waiting on special orders or inspections. Anything outside that line can still happen, just not this week, so list it as a phase two item rather than squeezing it in.

✓ Budget: $5,000 to $14,000 with a contractor, depending on vanity, floor tile and fan ductwork.
✓ In scope: new vanity and top, faucet, toilet, exhaust fan, vanity lighting, floor, wall paint, accessories and storage.
✓ Tub and shower surround stay unless leaking; a reglaze ($400 to $700) fits the week, a tile surround does not.
✓ Drain and supply locations stay within 2 in of current positions.
✓ Every product, including floor tile, grout and the fan, is delivered and inspected for damage before demo.
✓ If the fan needs a new roof or wall penetration or a new circuit, pull the permit before day 1 and book the inspection.
✓ Floor choice must cure in time: porcelain tile with rapid-set thinset, or click-lock waterproof LVP.

Timeline

Day-by-day schedule for a one-week bathroom

This schedule assumes a small crew and a 40 to 70 sq ft bathroom. Every product arrives in week minus one, and nothing waits on a supplier once demo starts. Plan for another bathroom in the house to carry the load, because this one has no working toilet from day 1 until the afternoon of day 6, and only a tub you cannot easily reach.

1Day 0 (one to two weeks before): Measure clearances, confirm vanity and toilet rough-in, order everything, pull permits for fan and electrical work.
2Day 1: Shut water, remove toilet, vanity, old fan, flooring and baseboard, protect the tub, and inspect the subfloor for rot around the toilet flange.
3Day 2: Run the new fan duct to the exterior, install the fan housing, add or move the vanity light box, and adjust supply lines if the new vanity needs it.
4Day 3: Repair subfloor, install backer or uncoupling membrane, and set floor tile with rapid-set thinset, or lay LVP.
5Day 4: Grout the floor, patch walls around the old mirror and fan, and prime.
6Day 5: Paint walls and ceiling with a mildew-resistant bathroom paint and seal grout once it has cured enough per the label.
7Day 6: Set the vanity and top, install the faucet and drain, set the toilet on a new wax or foam seal, mount lights, mirror and fan grille.
8Day 7: Install towel bars, hooks and storage, caulk vanity and tub joints, test every fixture and the fan, and walk the punch list.

Action items

Function checklist for the new layout

Check these against your real routines, not a showroom. If one fails, fix it before the vanity and toilet are set, because after day 6 it is expensive. Tape the vanity outline on the floor during demo day and stand in it with the door open to catch problems early.

✓ Every daily item has a drawer or closed cabinet within arm's reach of where it is used.
✓ The mirror clears of fog within 5 minutes of a shower with the fan running.
✓ There is at least 30 in of clear floor in front of the toilet and in front of the vanity.
✓ Vanity drawers open fully without hitting the toilet, door or tub.
✓ Towels hang within one step of the tub or shower exit.
✓ There are at least two GFCI-protected outlets or one double outlet near the sink for tools.
✓ The door swings without hitting the vanity, toilet or someone standing at the sink.
✓ Night lighting lets you use the toilet without switching on the full vanity light.

Specs

Clearances, airflow and storage numbers to build to

These are the code minimums and the more comfortable recommended dimensions. Use the recommended numbers wherever the room allows. Local codes vary, so confirm minimums with your building department, but in most US jurisdictions these figures follow the IRC and NKBA guidelines. Where the room is too small for the comfort numbers, a shallower or wall-hung vanity usually wins back the space.

✓ Toilet centerline to side wall or vanity: 15 in code minimum, 18 in recommended.
✓ Clear space in front of toilet and vanity: 21 in code minimum, 30 in recommended.
✓ Exhaust fan: 1 CFM per sq ft for rooms under 100 sq ft with a 50 CFM floor; an 80 to 110 CFM fan at 1.0 sone or less suits most hall baths.
✓ Fan duct: 4 in rigid or semi-rigid for fans up to about 80 CFM, 6 in for 110 CFM and above, terminating outdoors, never in the attic.
✓ Fan control: humidity-sensing switch or a 20 to 30 minute timer so the fan runs after you leave.
✓ Vanity: 34 to 36 in comfort height, 21 in deep standard or 18 in shallow in tight rooms, with drawers over doors wherever possible.
✓ Lighting: 1,600 to 2,400 lumens at the mirror from sconces at about 64 to 66 in or a bar above the mirror, 3000K, CRI 90+.
✓ Electrical: bathroom receptacles on a 20 amp circuit with GFCI protection, and a night light or toe-kick LED on a separate switch.

Common mistakes

Functional failures that show up after move-in

A refresh can look great and still frustrate you daily. These are the errors owners most often discover in the first month. Each one is locked in once the vanity, fan and toilet are installed, so catch them during ordering on day 0 rather than living with them for the next fifteen years.

✓ Buying a vanity with a fake drawer front and a single large door, which wastes the most valuable storage.
✓ Venting the new fan into the attic or a soffit with no damper, so moisture lands on the roof sheathing.
✓ Choosing a quiet fan rated too low for the room, so it runs silently and fogs anyway.
✓ Setting a 21 in deep vanity in a narrow room and losing the 30 in in front of it.
✓ Ordering a toilet with the wrong rough-in, most commonly a 12 in bowl for a 10 or 14 in drain.
✓ Leaving the outlet beside the mirror where a hair tool cord drapes across the sink.

Risk checks

Schedule and building risks in a one-week bathroom

A seven-day plan breaks when something hidden turns up behind the old vanity or under the toilet. Check these early so they cost you a day, not a week. Keep a contingency of 10 to 15% of the budget for subfloor or valve surprises; older homes almost always have one.

✓ Probe the subfloor around the toilet flange on day 1; a soft or black area means plywood replacement and possibly a joist sister.
✓ Confirm the main shutoff and both fixture valves close fully before demo, and replace any seized angle stop.
✓ Check the ceiling joist direction before ordering the fan so the duct run to the exterior is short and straight.
✓ Book the electrical inspection for day 2 or 3 if walls stay open; it is the single most common cause of slipping a day.
✓ Verify the new vanity top's faucet holes match the faucet you bought before the top is set.

Sign-off

Day 7 sign-off: does the room work

Test the room the way you will use it before the crew leaves, with a real shower and a real morning routine. Problems found while the crew is on site are fixed in minutes; the same problems found next week mean a return visit, a scheduling gap and often a trip charge. Hold final payment until every line below is true.

✓ After a 10 minute hot shower with the fan on, the mirror clears in under 5 minutes.
✓ The fan exhaust can be felt at the exterior hood, not in the attic.
✓ Toilet flushes fully, does not rock, and shows no water at the base after a dozen flushes.
✓ Every vanity drawer opens fully and every outlet trips and resets at its GFCI.
✓ Measured clearances in front of the toilet and vanity match the plan.
✓ Grout and caulk cure times are written down, with a date before which the floor should not be mopped.

AI prompts

Prompts for testing a function-first layout

Photograph the room from the door, showing the vanity and toilet together. Ask for storage and lighting changes inside the same footprint so the preview stays buildable in a week. Use the results to compare vanity depth and drawer layouts, then check every option against the 30 in clearance numbers before ordering.

✓ Keep the tub, toilet location and room footprint. Redesign this bathroom for maximum function: a 36 in wall-hung vanity with three stacked drawers, a recessed medicine cabinet above it, sconces either side, porcelain floor tile, and hooks beside the tub.
✓ Do not move plumbing or walls. Replace the vanity with an 18 in deep floating vanity with drawers to open floor space in front of the toilet, add a tall linen cabinet in the corner, a quiet ceiling fan grille, and bright even 3000K lighting.
✓ Keep the existing bathtub. Show this bathroom as a durable family bathroom: double-drawer vanity, quartz top, matte gray porcelain floor, a towel hook for each person near the tub, a toe-kick night light under the vanity, and a large mirror cabinet.

Test the storage and layout before you order

Upload a photo of your bathroom and preview vanity sizes, medicine cabinets and lighting in your real footprint. Settle the layout before day 0, when everything has to be ordered. A clear picture also makes contractor quotes faster and more accurate, since everyone is pricing the same room with the same vanity and fan.

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Validate the plan

Check circulation and furniture clearances step by step. Check the measurements with the Furniture Spacing Calculator before execution.