







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Bathroom Remodeling Across Ontario
A full bathroom remodel in Ontario, CA typically runs $9,000 – $28,000, with small bathroom remodels landing between $5,000 and $12,000. The single biggest price variable here is what’s under your slab: mid-century Ontario tract homes often have cast-iron drain lines that need replacement before any new shower pan goes in. Call (254) 272-5876 for a free estimate with a written price before any work starts.
When we scope a bathroom in Ontario, we look at the house the way a plumber does first. Does the drain tie into PVC, or is it original cast iron from a 1960s build? That one answer changes the permit path, the timeline, and the final number. Our crews work in Ontario every week, from the older neighborhoods around Chaffey High School up to the newer developments off Archibald Avenue, so we know which streets tend to have which conditions.
Why Sawyer Remodeling Is Ontario’s Preferred Bathroom Remodeling Company

Ontario homeowners call us because we put the price in writing before demolition starts. That’s the Relay Visibility Guarantee: a written price, a live arrival time, and photo updates before and after. No estimating games, no invoice surprises. We’ve been part of the Relay Home Co. family since 2005, and the process has been the same for nearly two decades.
Our Bathroom Remodeling team works with background-checked, uniformed technicians. You know who’s walking into your house before they arrive. Every project carries the 365-Day Done Right Promise: if it’s not done right, we make it right, in writing. And when you call, a live person answers. No voicemail loops, no callback queues.
Luca Romano, who leads our Ontario projects, keeps homeowners informed at every step. From the initial walk-through to the final punch list, you get the same plain-spoken updates: what we found, what it means, and what it costs.
Styles & brands we work with







Small Bathroom Remodel in Ontario
A small bathroom remodel in Ontario, CA usually runs $5,000 – $12,000, depending on whether we’re keeping the existing footprint and how much plumbing work the rough-in reveals. Most Ontario homeowners doing a small bath remodel are updating a hall bath or a secondary bath that’s still original to the house. The goal is a cleaner finish and better fixtures without moving walls or reworking the drain layout.
Scope and Timeline
A small bath remodel typically stays within the existing footprint. We replace the vanity, countertop, fixtures, lighting, and often the tub or shower surround. If we’re not moving plumbing, the project usually takes 2 – 3 weeks from demo to final inspection. Something like a KraftMaid vanity with a Silestone top and Moen faucets keeps the look sharp without the cost of a full-gut redo.
What Adds Cost in Ontario
If the existing drain is cast iron and failing, even a small bath can jump in price because we’re cutting slab to replace it. That’s common in Ontario’s older tract homes. We’ll tell you during the estimate walk-through what your drain condition looks like and what it means for your number before you sign anything.
Shower Remodel in Ontario

A shower remodel in Ontario, CA costs between $3,000 and $12,000 depending on whether you’re replacing an existing shower, converting a tub to a shower, or installing a walk-in shower where a standard tub used to be. Tub-to-shower conversions run $3,500 – $10,000 here, and walk-in shower installation is $4,500 – $12,000. The biggest cost driver is waterproofing: a properly built shower here needs a waterproof membrane system that stands up to hard water and humidity cycles that are common in the Inland Empire.
Frameless Glass and Tile Choices
Frameless glass shower enclosures are the most requested upgrade in Ontario right now. They open up a small bathroom visually and they’re easier to keep clean. We order glass cut to the finished opening after tile is set, so there’s no gap-filling or sloppy tolerances. Pair it with large-format tile and a linear drain for a clean, modern look.
When to Replace vs. Resurface
If your shower pan has failed and water is getting under the tile, resurfacing won’t fix it. You need a pan replacement and likely a new waterproofing membrane. In Ontario homes with slab foundations, a failed pan often means water against the concrete, which can damage the drain assembly over time. We’ll scope it properly during the estimate.
Trusted Brands We Service in Ontario
We stock and install fixtures and surfaces from brands Ontario homeowners actually ask for: Cambria and Caesarstone countertops, Kohler and Moen fixtures, and KraftMaid cabinetry. We also work with Sakrete products for proper mortar beds and substrates, and we’ve spec’d materials from Cover and Dvele for homeowners looking at higher-end finish packages. Having these brands on the shelf means we’re not waiting on a distributor to ship something unusual before we can finish your shower valve or vanity top.
See the difference
Before
After
Before
After
Before
AfterCommon Bathroom Remodeling Problems We See in Ontario Homes
- Cast-iron drain failure under the slab. In Ontario’s mid-century tract homes, original cast-iron drain lines corrode from the inside out. A bathroom remodel that should be cosmetic turns into a slab-cutting job when the drain has to be replaced before tile goes down.
- Water damage from failed shower pans. We regularly open up bathrooms in neighborhoods like College Park and find the shower pan has been leaking for years. The tile looks fine from above, but the substrate is soft and the drain assembly is compromised.
- Unplanned framing changes. Some Ontario homes have bathroom walls that aren’t what they appear on the original plans. We verify load-bearing status during the estimate, not after demo, so the written price reflects the real scope.
- Under-scoped finish allowances. If your allowance was set before you visited the showroom, it’s probably too low for the Kohler, Moen, or Cambria selections you actually want. We set realistic allowances from the first walk-through so your change orders don’t stack up after you’ve fallen in love with a specific quartz.
Pricing for Bathroom Remodeling in Ontario, CA
Here are the honest ranges for bathroom work in Ontario right now:
| Project | Price Range in Ontario |
|---|---|
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Shower Replacement | $3,000 – $8,500 |
| Bathroom Vanity Installation | $800 – $3,000 |
The price on your written estimate is the price on your invoice. That’s the no-hassle upfront pricing model we’ve run since 2005. If something changes during the job, we put the change order in writing and you approve it before we move forward. No exceptions.
Call (254) 272-5876 to schedule a free estimate. We’ll walk your bathroom, check the drain condition, and give you a written line-item price before any tools are picked up.
We Also Serve Cities Near Ontario
Sawyer Remodeling handles bathroom remodels throughout the Ontario area, including Montclair, Claremont, Upland, and Rancho Cucamonga. If you’re in a neighboring city and weighing your options, the same written pricing and 365-Day Done Right Promise apply. Scheduling and dispatch are coordinated from our Inland Empire office, and our crews are local.
Serving Ontario, CA - Our Local Coverage Area
We’re based in the Ontario area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Bathroom Remodeling in Ontario
Yes, if you’re moving plumbing, changing the drain location, or altering any load-bearing framing, Ontario requires a permit and inspection. Cosmetic updates like swapping a vanity or replacing a faucet typically don’t require a permit, but anything that touches the drain line, water supply, or shower pan waterproofing does. We pull permits and pass inspections on every job that requires them. Call (254) 272-5876 if you’re not sure whether your project needs one.
Most full bathroom remodels in Ontario take 3 – 5 weeks from demo to final inspection. Small bath remodels that stay in the existing footprint run 2 – 3 weeks. If we’re replacing a cast-iron drain under the slab, add a few days for the plumbing fix and the re-inspection. We give you a written timeline with your estimate, and we stick to it.
The drain condition is the single biggest cost variable in Ontario. If your home has original cast-iron drain lines under the slab and they need replacement, that adds real money to the job. The second biggest driver is waterproofing: a properly built shower with a full membrane system costs more than a basic tile-over-drywall job, and it’s worth every dollar. Finish selections from Kohler, Cambria, and Moen move the number too. Call
Yes, keeping the existing footprint is the single easiest way to control cost in an Ontario bathroom remodel. When you don’t move the toilet, shower, or sink, you avoid relocating drain lines and water supply, which means less slab work and fewer permits. Most small bathroom remodels stay in the existing footprint and still get a complete visual transformation. We’ll show you exactly where the savings are when we price your project.
Your written price, the complete scope of work, the timeline, your finish allowances, and the change order process. At Sawyer Remodeling, every project starts with a written line-item price, and every change during the job gets approved in writing before work moves forward. That’s the Relay Visibility Guarantee, and it applies to every Ontario project. Call (254) 272-5876 to get yours.
Written by Luca Romano, Owner at Sawyer Remodeling, serving Ontario since 2005.
Why Ontario Chooses Sawyer Remodeling
We set the standard for bathroom remodeling in Ontario.
No Change-Order Surprises
The written quote you sign is the price you pay. Anything we find mid-job gets priced and approved by you in writing before we touch it.
Licensed & Insured
Fully certified technicians who meet all local and state licensing requirements.
Upfront Pricing
No hidden fees, no surprises. You approve the price before any work begins.
Guaranteed Work
Every repair and installation is backed by our workmanship warranty and satisfaction guarantee.
How It Works in Ontario
Getting your bathroom remodeling handled is simple and fast.
Call or Request a Free Estimate
Tell us about your bathroom remodeling needs and we provide an upfront, transparent quote - no obligation, no hidden fees.
Licensed Technician Dispatched
A background-checked, certified technician arrives in Ontario - typically within 30-60 minutes, with parts stocked on the truck.
Problem Solved, Guaranteed
We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.
What happens when you call
- 1A real person answersNo phone trees - talk to a local bathroom remodeling pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Ontario Customers Say
Trusted by homeowners across Ontario and surrounding areas.
"Home renovation with a new layout. Permits and inspections were all tracked online."
"Crew cleaned up each day. Swept and wiped down the work area every evening, which I did not expect."
"Quote was itemized and every change was approved in the app."
Our Work in Ontario
A look at recent construction projects across Ontario and surrounding areas.
Ideas for every room in the house
Built-ins, window seats, family rooms and staircases: the changes that make a whole house work better.
Read our remodeling guides





More remodeling services in Ontario
Every project below starts the same way: a free on-site visit and a written price.
General Contractor
Additions, garage conversions and wall removals, engineered, permitted and inspected.
Explore general contractorHome Renovation
Several rooms or the whole house on one plan, one schedule and one crew lead.
Explore home renovationGetting started with Sawyer
Every project starts with a conversation and a written price. Here is how to take the first step.

Free on-site estimate
A project lead walks the job with you, measures it and hands you a written, line-item price. No obligation.
Book an estimate
Find your local team
Each location is independently owned and works to the same written standard. Enter your ZIP code to reach yours.

Read our written promise
What we promise on every job, written down, with the terms spelled out before any work starts.
Our promiseCurrent Offers
Bring these savings to your next appointment.
Free On-Site Estimate & Written Quote
No obligation. We measure, price the job in writing, and the quote is yours to keep.
Written Price Before Any Work Starts
Written Guarantee on Every Repair
Free Second Visit if the Repair Fails
Ready for Bathroom Remodeling in Ontario?
Call now for a free estimate - or request one below. Licensed, insured, and here with fast after-hours help in Ontario.
(254) 272-5876Request a Free Estimate in Ontario
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