Shower Pan Replacement Cost
Estimate the cost to replace a shower pan, installed — by pan type (prefab acrylic/fiberglass base, solid-surface, or custom tiled), shower size, and whatever water damage is found under the old pan. See why the subfloor is the wild card.
Estimate what it costs to replace a shower pan (the waterproof base of the shower), installed by a pro. The price depends most on the pan type — a cheap drop-in prefab base versus a custom tiled pan — plus the shower's size and, often the wild card, whatever water damage is found under the old pan.
Pan type
The kind of shower base going in — the biggest cost factor. A prefab acrylic or fiberglass base is a molded, ready-made pan that drops in and connects to the drain; it's the cheapest and quickest. A solid-surface or stone base is a heavier, more upscale ready-made pan that costs more. A custom tiled pan is built on site — a sloped mortar bed with a waterproof membrane, then tiled — the most expensive because of the materials and skilled, leak-critical labor.
Shower size
The footprint of the shower. Small is a compact stall (around 32–36 inches). Standard covers most showers (roughly 36–48 inches). Large is a big walk-in, a 60-inch-plus footprint, or a curbless (zero-threshold) design — more material and labor, especially for a tiled pan.
Condition under the old pan
How much extra work beyond a straight swap. Choose 'straightforward swap' if you're just replacing the pan and the drain stays put. Choose 'drain move / minor subfloor' if the drain has to be relocated or there's a small area to patch. Choose 'water-damaged subfloor' if the old pan leaked and rotted the subfloor or joists — common, since a leak is usually why a pan gets replaced, and it can add a lot. If you're not sure, expect at least some surprise here and budget a cushion.
Cost to replace your shower pan (installed)
$700–$1,600
prefab acrylic/fiberglass base · standard shower
A prefab base is the budget-friendly, more DIY-able choice
A molded acrylic or fiberglass base drops into place and connects to the existing drain, so it's the cheapest and fastest option — and a handy homeowner can install one, though getting it dead-level and the drain sealed still matters. Solid-surface and stone bases cost more but look more upscale. All are one-piece, so there's no membrane to fail like a tiled pan.
Budget a cushion for what's under the old pan
Most shower pans get replaced because they leaked — and you won't know what the water did to the subfloor until the old pan is out. If it uncovers rot or mold, repairs can add anywhere from a couple hundred to a couple thousand dollars. It's smart to hold back 10–15% for surprises, even on a "straightforward" swap.
Estimate = a per-type installed cost (pan + demo + labor + basic plumbing) scaled for shower size, plus any drain or subfloor/water-damage work. Excludes wall tile, a new door, valve/trim, and permits. 2026 national-average figures — the subfloor is the wild card, so get an on-site quote once the old pan can be inspected.
💡About this calculator▼
A shower pan is the waterproof base of your shower — the sloped floor that catches the water and sends it to the drain. When it cracks, leaks, or wears out, replacing it is one of those jobs where the quote can swing wildly, because "shower pan" covers everything from a $700 drop-in plastic base to a $3,500-plus custom tiled floor. This calculator estimates what yours should cost, installed by a pro, based on the three things that actually move the price.
The biggest one is the pan type. A prefab acrylic or fiberglass base is a molded, ready-made pan that drops into place and connects to the existing drain — it's the cheapest and fastest, and the most DIY-friendly. A solid-surface or stone base is a heavier, more upscale ready-made pan that costs more. A custom tiled pan is built on site: a sloped mortar bed, a waterproof membrane, and then tile — the most expensive because of the materials and the skilled, leak-critical labor. The second factor is shower size, since a big walk-in or curbless shower takes more material and labor than a compact stall.
The third — and the one that turns a predictable job into a nervous one — is what's underneath. Most shower pans get replaced because they *leaked*, and you don't find out what that water did to the subfloor until the old pan comes out. If it uncovers rot, mold, or damaged joists, the repair can add anywhere from a couple hundred to a couple thousand dollars, and it's not optional — a new pan set over rotted framing just fails again. So this tool lets you flag that condition, and it's honest about the fact that the subfloor is the real wild card. Use the estimate to budget and sanity-check quotes, but plan to confirm the number once a pro can actually see under the pan.
The estimate starts from an installed cost for the pan type, scales it for shower size, and adds any drain or water-damage work.
Pan type (installed — pan + demo + labor + basic plumbing, standard size): • Prefab acrylic/fiberglass base ≈ $700–$1,600 — molded, drop-in, cheapest. • Solid-surface / stone base ≈ $1,100–$2,400 — upscale ready-made. • Custom tiled pan ≈ $1,300–$3,500 — mortar bed + membrane + tile, priciest.
× Shower size: small (≈32–36") ×0.85 · standard ×1.0 · large (60"+/curbless) ×1.3.
+ Condition under the old pan: • Straightforward swap — drain stays, no damage: +$0. • Drain move / minor subfloor — relocate the drain or patch a small area: +$250–$900. • Water-damaged subfloor — rot or mold from the leak: +$700–$2,500 (severe damage can double or triple the labor).
So: installed cost = (pan-type base × size) + damage work. A simple prefab swap can be well under $1,500; a large custom tiled pan over a rotted subfloor can top $6,000.
📐How it's calculated▼
Installed cost = (pan-type base × size multiplier) + condition add.
Pan base: prefab $700–$1,600 · solid-surface $1,100–$2,400 · custom tiled $1,300–$3,500 Size: small ×0.85 · standard ×1.0 · large ×1.3 · Condition: simple +$0 · moderate +$250–$900 · major +$700–$2,500
Example — prefab base, standard shower, straightforward swap:
→ $700–$1,600 × 1.0 + $0 = $700–$1,600 — a typical drop-in base replacement.
Example — solid-surface base, standard shower, drain relocation:
→ ($1,100–$2,400 × 1.0) + $250–$900 = $1,350–$3,300.
Example — custom tiled pan, large shower, water-damaged subfloor:
→ ($1,300–$3,500 × 1.3) + $700–$2,500 = $2,390–$7,050 — a premium pan over a damaged subfloor.
📎Sources:This Old House — Cost To Install a Shower Pan (2026): cost by type (fiberglass/acrylic/stone/tile), labor, and water-damage add,Modernize — Shower Pan Replacement Cost by Size & Type (2026): average ~$1,600, range $530–$2,700, cost by size
🔍Finding your inputs▼
Pan type: The kind of base going in, and the single biggest cost factor. A prefab acrylic or fiberglass base is a one-piece molded pan that drops in and hooks to the drain — cheapest, fastest, and the option a handy homeowner can tackle. A solid-surface or stone base is a heavier, higher-end ready-made pan (better looks and durability, more money). A custom tiled pan is built from scratch on site — a sloped mortar bed with a waterproof membrane, then tile — which is fully customizable but the most expensive and the most dependent on skilled, watertight workmanship. If you just want the cheapest reliable fix and don't need a custom look, a prefab base does the job; if you want a specific tile look or an odd size, you're in tiled-pan territory.
Shower size: The footprint of the shower. Small is a compact stall (around 32–36 inches). Standard covers most showers (roughly 36–48 inches). Large is a big walk-in, a 60-inch-plus base, or a curbless (zero-threshold) design — all of which use more material and labor, especially for a tiled pan where every extra square foot is hand-built. Pick the closest match to your shower's floor size.
Condition under the old pan: How much work beyond a straight swap you expect — and this is where shower jobs get unpredictable. Choose straightforward swap if you're simply replacing the pan and the drain stays where it is. Choose drain move / minor subfloor if the drain needs to be relocated for a new layout, or there's a small area to patch. Choose water-damaged subfloor if the old pan has been leaking and rotted the subfloor or joists underneath — which is common, because a leak is usually *why* a pan is being replaced, and repairing it can add a lot. If you don't know what's under there (you usually won't until the pan is out), it's wise to assume at least some surprise and keep a 10–15% cushion in your budget.
⚠️Special situations▼
Why is my shower pan replacement quote so much higher than the base price?
Almost always because of what's under and around the pan, not the pan itself — a shower pan replacement is rarely just the cost of the pan and an hour of labor, and the extras are where quotes climb. The pan (or tile materials) is often the smallest line item; the bigger costs come from demolition of the old pan, hauling it away, the plumbing to reconnect (or relocate) the drain, and — the big one — any water damage repair. Because pans are usually replaced due to leaks, contractors frequently find a rotted or mold-damaged subfloor once the old pan is out, and repairing that can add a few hundred dollars for a small patch to a couple thousand for replacing subflooring or joists, with severe damage doubling or tripling the labor. Beyond that, a quote may be higher because it's not really 'just the pan': it might include new wall tile where the old pan met the walls, a new drain assembly, a curb or threshold change, waterproofing upgrades, or a shower door — all reasonable, but they inflate the number versus the bare pan price you saw online. Layout and access matter too: a cramped or upstairs bathroom, a curbless/zero-threshold design (which requires recessing the drain into the floor framing), or an odd size all add labor. To understand your quote, ask the contractor to itemize it: separate the pan/materials, demolition and disposal, plumbing/drain work, any wall or door work, and a specific line (or contingency) for subfloor repair if damage is found. That itemization also lets you compare bids fairly and decide what's essential (the pan and a sound, waterproofed subfloor) versus optional (upgraded tile, a new door). If the quote is high mainly because of found or anticipated water damage, that's not padding — it's the part you can't skip.
Can I replace a shower pan myself to save money?
It depends heavily on the type of pan, and the honest answer splits cleanly: a prefab base is a realistic DIY for a handy homeowner, while a custom tiled pan usually is not. A molded acrylic or fiberglass base is designed to drop into place — you remove the old pan, dry-fit the new one, set it in mortar or per the manufacturer's instructions, connect it to the existing drain with the right drain kit, seal it, and check that it's dead level and drains properly. It's very doable with basic tools and patience, and doing it yourself saves the labor (roughly $350–$570 for a simple replacement) so you mostly pay for the pan. The critical details even on a DIY prefab job: get it perfectly level, get the drain connection watertight (a leaking drain seal is a common DIY failure), and inspect the subfloor while it's exposed — if you find rot or mold, deal with it before setting the new pan. A custom tiled pan is a different story and generally not a beginner DIY, because it's a from-scratch waterproofing system: you're building a sloped mortar bed (pre-slope), installing a waterproof membrane or a system like a foam pan with a bonded membrane, setting the drain at the right height, and then tiling — and every one of those steps has to be right or the pan leaks, sending you back to square one plus subfloor repairs within a few years. Experienced DIYers do build tiled pans, but it requires real knowledge of shower waterproofing (the biggest cause of failed showers is bad waterproofing), so most people should hire a tile/shower pro for a tiled pan. The middle path: some homeowners do the demolition themselves to save labor, then have a pro install the pan and handle the waterproofing. And whatever you do, if the reason you're replacing the pan is a leak, don't skip diagnosing and fixing the source — otherwise the new pan inherits the same problem.
How do I know if the subfloor under my shower is water-damaged?
You often can't be fully certain until the old pan is removed, but there are strong warning signs before and during the job, and knowing them helps you budget and avoid a nasty surprise. Before you start, watch for: a shower floor that feels soft, spongy, or flexes when you stand on it; a musty or moldy smell in or near the bathroom; discoloration, staining, peeling paint, or bubbling on the ceiling or walls of the room below (or the floor around the shower); loose or cracked tiles or a pan that has visibly cracked or separated from the walls; and any history of the shower leaking. A ceiling stain directly under an upstairs shower is a classic tell that water has been getting through for a while. That said, the definitive check comes during the replacement: once the contractor removes the old pan, they can see and probe the subfloor directly — pressing for softness, looking for dark staining, rot, delamination of plywood layers, mold growth, or damaged floor joists beneath. This is exactly why many shower pan quotes include a contingency or a 'to be determined pending inspection' note for subfloor repair: a reputable contractor won't know the full scope until they open it up. Practically, assume there's at least some chance of damage (since a leak is usually why the pan is being replaced) and budget a 10–15% cushion, or ask the contractor to price out both scenarios — sound subfloor versus needing repair — so you're not blindsided. If damage is found, fixing it properly (removing the wet material, treating or replacing it, letting it dry, and addressing the leak source) is essential before the new pan goes in; skipping it just guarantees the new pan fails too. The upside of catching it during a pan replacement is that the area is already opened up, so it's the cheapest time to fix subfloor damage you'd otherwise pay much more to access later.
Is a prefab base or a custom tiled pan better for my shower?
It comes down to budget, the look you want, and how much you value customization versus simplicity and reliability — each has clear strengths. A prefab acrylic or fiberglass base is the practical choice for most people: it's the cheapest, it installs fast, it's the most DIY-friendly, and because it's a single molded piece with no field-built waterproofing, there's no membrane to fail — which makes it very reliable and low-risk. The trade-offs are that you're limited to standard sizes and shapes, the look is more basic (though modern solid-surface and stone bases look quite upscale), and if it ever cracks you typically replace the whole pan. A custom tiled pan is the choice when you want a specific high-end look, a tile floor that matches or flows into the rest of the bathroom, an unusual size or shape, or a curbless/zero-threshold design for accessibility — none of which a prefab base can do. The costs of going tiled: it's significantly more expensive, it takes longer, and it lives or dies by the waterproofing — a properly built tiled pan (good pre-slope, quality membrane, correct drain) lasts decades, but a poorly built one leaks and takes the subfloor with it, so the installer's skill matters enormously. A solid-surface or stone prefab base splits the difference: more upscale than basic fiberglass, still a reliable one-piece pan, at a middle price. A good rule of thumb: choose a prefab base if you want the most cost-effective, low-risk, and possibly DIY option and a standard size works; choose a custom tiled pan if you want a specific custom look, need a non-standard or curbless design, and are willing to pay more and hire a skilled tile pro to get the waterproofing right. This calculator prices all three so you can see the cost difference and weigh it against how much the custom look and flexibility are worth to you.
❓Common questions▼
How much does it cost to replace a shower pan?
Replacing a shower pan costs about $530 to $2,700 for most homeowners, averaging around $1,600 installed — but it ranges from roughly $700 for a simple prefab base up to $3,500 or more for a custom tiled pan, and higher still if there's water damage underneath. The biggest factor is the pan type. A prefab acrylic or fiberglass base — a molded, drop-in pan — is the cheapest, typically $700 to $1,600 installed, because the pan itself runs about $150 to $620 and labor for a straightforward replacement is around $350 to $570. A solid-surface or stone base costs more (roughly $1,100 to $2,400 installed) for a more upscale look. A custom tiled pan, built on site with a mortar bed, waterproof membrane, and tile, is the most expensive at about $1,300 to $3,500 (the tile work alone runs $900 to $3,500) because of the materials and skilled labor. Shower size adds or subtracts — a large walk-in or curbless shower costs more than a compact stall. And the wild card is what's under the old pan: since pans are usually replaced because they leaked, contractors often find a water-damaged subfloor, and repairing that adds anywhere from about $225 for a small patch to a couple thousand dollars for structural work, with severe damage doubling or tripling the labor. The estimate covers the pan, demolition, installation, and basic drain work, but not wall tile, a new door, or a new valve. Enter your pan type, shower size, and expected condition in the calculator above for a range tailored to your project, and budget a 10–15% cushion for surprises found under the pan.
Why are shower pans usually replaced, and does the subfloor need work too?
Shower pans are most often replaced because they've started leaking — through a crack in the pan, a failed waterproof membrane on a tiled pan, a bad seal where the pan meets the drain or the walls, or simply age and wear — and that leaking is exactly why the subfloor so often needs work too. Water that escapes a failing pan doesn't just disappear; it soaks into the subfloor and framing underneath, and over months or years it can cause the wood to rot, grow mold, or weaken structurally. So by the time a pan is bad enough to replace, there's a real chance the surface beneath it has taken damage — which is why 'replace the shower pan' frequently becomes 'replace the pan and repair the subfloor.' You usually can't confirm the extent until the old pan is removed and the contractor can see and probe the subfloor directly, but warning signs include a spongy or flexing shower floor, a musty smell, and stains on the ceiling or walls below. If damage is found, repairing it is essential, not optional: setting a brand-new pan over rotted or compromised framing just leads to another failure, and you'd be paying to do the whole job twice. Repair costs vary with severity — a small patch might add a couple hundred dollars, while replacing sections of subfloor or joists can add a couple thousand, and severe damage can double or triple the labor of the whole job. Two pieces of advice: budget a 10–15% cushion (or ask your contractor to quote both a sound-subfloor and a damaged-subfloor scenario) so you're not caught off guard, and make sure the underlying leak source is diagnosed and fixed when the new pan goes in — otherwise the new pan inherits the same problem. The one silver lining is that a pan replacement already exposes the subfloor, making it the cheapest time to fix damage you'd otherwise pay much more to reach later.
Is a tiled shower pan worth the extra cost over a prefab base?
It's worth it if you specifically want what a tiled pan offers — a custom look, a non-standard size or shape, or a curbless design — but not if you just need a reliable, cost-effective base, in which case a prefab pan is the smarter buy. A custom tiled pan costs significantly more (roughly $1,300 to $3,500 installed versus $700 to $1,600 for a prefab base) and takes longer, because it's built by hand on site: a sloped mortar bed, a waterproof membrane, the drain set to the right height, and then tile. What you get for that premium is full customization — you can match the tile to the rest of the bathroom, create an oversized or oddly shaped shower, and build a curbless, zero-threshold entry that a molded pan can't provide (valuable for accessibility and a high-end look). The catch is that a tiled pan's reliability depends entirely on the waterproofing: done right by a skilled installer, it lasts for decades; done poorly, it leaks and damages the subfloor, and bad waterproofing is the number-one cause of failed showers. A prefab acrylic or fiberglass base, by contrast, is a single molded piece with no field-built waterproofing to fail, so it's cheaper, faster, more DIY-friendly, and very reliable — its downsides are limited sizes and shapes and a more basic look (though solid-surface and stone bases upgrade the appearance at a middle price). So the honest test is: if a standard-size, reliable, budget-friendly pan meets your needs, a prefab base is worth it and a tiled pan is overkill; if you need the custom look, size, or curbless design and you'll hire a skilled tile pro to get the waterproofing right, the tiled pan is worth its higher cost. Use the calculator to see the price difference for your shower, then weigh it against how much the customization matters to you.
What does a shower pan replacement include, and what costs extra?
A standard shower pan replacement — and what this calculator estimates — includes removing and disposing of the old pan, supplying and installing the new pan (whether a prefab base or a built-on-site tiled pan), the labor to set it, and reconnecting it to the existing drain. That's the core job. What commonly costs extra, and isn't in the base estimate, falls into a few buckets. First and most important, subfloor or water-damage repair: if the old pan leaked and rotted the subfloor or framing, repairing that adds from a couple hundred to a couple thousand dollars and can double or triple the labor — it's the most frequent 'extra' because leaks are usually why pans are replaced. Second, plumbing changes: if the drain has to be relocated for a new layout (rather than reusing the existing spot), that adds plumbing time and cost, as do new drain assemblies or venting adjustments. Third, related surfaces and fixtures that people often do at the same time but that aren't strictly 'the pan' — new wall tile or surround where it meets the pan, a new shower door or curtain rod, a new shower valve, trim, or fixtures, and any curb or threshold changes (a curbless conversion is notably more involved). Fourth, the extras like a built-in bench or a trench drain, and project overhead like permits and debris removal. Because of all this, it's worth getting an itemized quote that separates the pan and installation from the drain work, any wall/door work, and a specific line or contingency for subfloor repair — that way you can see exactly what you're paying for and decide what's essential versus optional. As a rule, budget a 10–15% cushion above the base estimate for the things that tend to surface once the old pan is out.
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