The four stages
Editable planning ranges, last checked July 2026 — not schedule promises.
1. Why published timelines differ
Published figures mix very different projects. The variables that matter:
2. Phase 1: consultation and bathroom assessment
Typical tasks: measuring the space, inspecting the existing tub, discussing the shower type, reviewing entry and seating, identifying plumbing locations, checking walls and flooring, selecting accessibility features, and establishing a preliminary scope. Come prepared:
3. Phase 2: estimates and contractor selection
Expect site visits and written estimates you can compare scope-for-scope. Per FTC consumer guidance: verify licensing where required, ask for proof of insurance, get multiple written estimates, use a detailed written contract, understand payment and financing terms, avoid high-pressure decisions, never pay the entire price in advance, confirm who obtains permits, and keep copies of every agreement. Estimates should state start and completion expectations — as estimates, not guarantees.
4. Phase 3: design and product selection
Decisions to lock in: prefab walls or tile, shower pan, threshold or curbless entry, seat, grab bars, handheld showerhead, controls, storage, glass or curtain, flooring, and lighting. Delayed decisions delay ordering — and ordering delays construction.
5. Phase 4: permits and ordering
Permit requirements vary by jurisdiction — plumbing, electrical, structural, or broader remodel work may trigger them, and many contractors handle the filings. Custom products carry lead times, and custom glass is usually measured only after the finished opening exists, which is why glass often trails the main construction. Products should be on hand and checked before demolition begins.
No blanket rule: some conversions need permits and some don’t — your jurisdiction and scope decide. Ask who files, and how inspection scheduling works locally.
7. Prefab, custom tile, and curbless timelines
A standard same-footprint prefab project is usually the fastest path: pre-sized base and panels, little tile work, fewer curing stages, and retained plumbing. It can still be delayed by repairs, product fit, plumbing surprises, permits, missing parts, inspection, or a custom enclosure — “one-day bath” claims belong only to specific verified installation systems under good conditions, never as a generic promise.
Custom tile takes longer by nature: framing, a shower pan, waterproofing (with flood testing where used), tile setting, grout, sealing, curing, and custom glass measurement and fabrication. Curbless construction adds floor structure work — recessing or rebuilding the floor, drainage slope, waterproofing beyond the shower area, linear drains, floor transitions, and inspection. And a curbless entry alone doesn’t make a project wheelchair accessible.
9. Will the bathroom be usable?
The bathing area will generally be unavailable during construction. The toilet and sink stay usable in some projects and not others; dust, noise, and temporary utility shutoffs should be expected. Plan alternative bathing arrangements before day one, and ask the contractor to explain daily access — continued bathroom access is never guaranteed.
10. Questions to ask about timing
11. How to reduce avoidable delays
12. Warning signs in timeline promises
Treat these cautiously: a guaranteed completion date offered without inspecting the bathroom, no allowance for hidden damage, no discussion of permits, no written schedule, pressure to sign immediately, missing product specifications, full payment required before work, or timeline claims that count only demolition and installation while excluding glass and finish work. A trustworthy schedule names its assumptions.
A typical on-site timeline
An illustrative sequence for a standard project — not a promise. Tasks may overlap or occur in a different order.
What can delay the project?
Frequently asked questions
How long does a standard tub-to-shower conversion take?
About three to seven working days of on-site construction is typical for a standard professional project — with the full calendar from consultation to completion running longer because of planning, ordering, permits, and glass. No individual project is guaranteed to match the range.
Can a tub be converted to a shower in one day?
Only specific prefabricated installation systems, under good conditions, in a same-footprint project — and even then repairs or fit issues can extend it. Treat generic one-day promises made before a site inspection with caution.
How long does a tiled conversion take?
Usually a week or more of on-site work: pan construction, waterproofing, tile setting, grout, sealing, and curing each take real time — plus custom glass measured after the opening is finished.
Does a curbless shower take longer?
Generally yes. Recessing or rebuilding the floor, extended waterproofing, linear drains, and floor transitions add structural work — often with inspection steps.
How long does custom shower glass take?
It’s typically measured after the finished opening exists, then fabricated — commonly adding days to weeks after the main construction. Curtains and standard enclosures avoid the wait.
Will the bathroom be usable during installation?
The bathing area won’t be. The toilet and sink stay usable in some projects and not others — ask the contractor to explain daily access, and plan alternative bathing before work starts.
Does the project require a permit?
It depends on your jurisdiction and scope — plumbing, electrical, or structural work commonly triggers permits, and many contractors handle the filings. There’s no universal yes or no.
What happens if water damage is found?
Demolition sometimes reveals damage the estimate couldn’t see. A fair contract states in advance how hidden conditions are priced and handled — repairs extend the schedule but protect the result.
Can the contractor use the existing plumbing?
Often yes — same-footprint conversions usually reuse the drain and supply locations, which is a big reason they’re faster and cheaper. Drain relocation (common in curbless designs) adds time.
What causes the most common delays?
Hidden water damage, product availability, custom glass, permit and inspection scheduling, and late homeowner decisions. Half of those are avoidable with early decisions and on-hand materials.
How long should waterproofing cure?
Whatever the specific system’s manufacturer specifies — curing and flood-testing steps vary by product and must not be rushed. It’s the one stage where patience directly protects the whole project.
When can the new shower be used?
When the contractor confirms that sealants, grout, and waterproofing have cured per the products’ instructions and any inspection is complete — often within a day or two of finish work, but product-specific.
Should materials arrive before demolition?
Yes — having the base, walls, fixtures, and accessories on site and checked before demolition begins prevents the worst kind of delay: an open, unusable bathroom waiting on a backorder.
How can I prepare for the project?
Finalize feature decisions, clear the bathroom and the path to it, plan where household members will bathe, confirm daily access and dust protection with the contractor, and keep a contingency fund for what demolition reveals.
Planning a Tub-to-Shower Conversion?
Explore project options and typical costs before requesting a site-specific schedule from a professional.
Sources
Companion guides: the conversion service page, conversion costs, walk-in shower costs, the bathroom safety checklist, and financial assistance. See our Editorial Policy.