Fast, Reliable Bathroom Remodeling Across Midway City
A full bathroom remodel in Midway City typically runs $18,000 to $42,000 depending on whether you’re refreshing a hall bath or gutting a primary suite. The number moves most when walls come open and we find what 1950s tract ranches in the 92655 ZIP actually hide. We’re Casita ADU Builders, and while our name says ADU, our in-house Bathroom Remodeling team handles full gut renovations, waterproofing and tile, and the electrical and plumbing upgrades these older Midway City homes almost always trigger once a permit goes through OC Public Works. Call (877) 658-7475 for a free estimate, and we’ll walk your specific house before quoting anything.
Why Casita ADU Builders Is Midway City’s Preferred Bathroom Remodeling Company
Midway City isn’t Westminster. It isn’t Garden Grove. It’s unincorporated Orange County, which means every permit application routes through OC Public Works and the county’s OCTAP program, not a city planning counter. A contractor who files with the wrong jurisdiction stalls your project by weeks and leaves county-level code upgrades unaddressed. We know the difference because we work here, and we’ve pulled county permits for bathroom remodels on residential streets off Bolsa Avenue and Brookhurst Street long enough to know which inspectors want what documentation.
Our clients in Midway City tend to own modest post-WWII single-family homes: stucco bungalows and tract ranches with compact lots and original plumbing that’s reaching the end of its service life. Nolan Treffert, who leads our team, built Casita ADU Builders around one principle: the same contractor who designs and builds your ADU should be able to finish the interior, including the bathroom, without handing you off to a second crew. That means one contract, one point of accountability, and no gaps where a sub walks away and you’re left holding a half-tiled shower.
We also hear the same comparison from Midway City homeowners: a quote from a generalist remodeler in Huntington Beach comes back padded because they’re commuting in and billing travel time. We work the 92655 regularly, and our pricing reflects that familiarity.
Our Bathroom Remodeling Services in Midway City
Full Bathroom Remodel
A full gut remodel in Midway City means removing everything to the studs, replacing the valve, drain, and supply lines, and rebuilding with new waterproofing, tile, fixtures, and ventilation. In homes built between 1950 and 1965 around the Bolsa Chica corridor, what we find behind the old tile decides how far your budget stretches. We price the visible scope, then write allowances for the likely surprises so you’re not blindsided mid-project. A hall bath off the main hallway near Hollydale Street might run $18,000 to $26,000. A primary suite with a shower rebuild and custom tile often lands between $30,000 and $42,000.

Waterproofing and Tile
Waterproofing failures are the single most common reason a Midway City bathroom fails inspection. The original pans in these 1950s and 60s homes were often copper or lead, installed over wood subfloors without slope, and decades of settling have cracked them. We use Schluter membrane systems on every shower rebuild, with flood tests documented before tile goes on. In coastal-inland Midway City, where summers stay dry but Santa Ana events push dust and wind, the real enemy is humidity trapped behind improperly sealed tile. We address it at the substrate level, not with caulk and hope.

Electrical and Plumbing Upgrades
This is where Midway City’s unincorporated status hits your budget directly. A bath remodel permitted through OC Public Works triggers county-level code requirements that a city like Westminster might not enforce for the same scope. Galvanized supply lines next to corroded copper, 60-amp panels feeding bathroom circuits, and undersized vent stacks all show up once walls are open. We inspect before demolition, identify what the county will require, and write those upgrades as line items. No vague change orders. No “we’ll see what the inspector says.”

What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Midway City
We install and stand behind products that survive Orange County’s specific conditions, including James Hardie fiber-cement backer in wet zones and Schluter waterproofing assemblies. Our supplier relationships, built through ADU work with brands like Abodu and Cover, give us access to fixtures and materials at pricing most single-bathroom remodelers can’t touch. Midway City homeowners get the same procurement channel we use on six-figure ADU builds, applied to a 40-square-foot hall bath.
Common Bathroom Remodeling Problems We See in Midway City Homes
- Galvanized and polybutylene supply lines. Homes off Bolsa Avenue often had original galvanized steel patched over the years with whatever was on the truck. We pressure-test every line before closing walls, and we typically repipe the bath in PEX when the old stuff fails.
- Undersized framing and single-wall construction. 1950s tract ranches in the 92655 were framed fast and cheap. When tile weight or a new tub flexes the floor, we reinforce joists and blocking before waterproofing, not after the tile cracks.
- 60-amp electrical panels feeding 20-amp bathroom circuits. GFCI protection, vent fans, and heated floors all pull load. County inspectors in Midway City will flag an overloaded panel on a permitted bathroom remodel. We plan for the panel upgrade if the load calculation calls for it.
- Failed copper shower pans. Original copper pans in 1950s homes corrode from the underside, and the first sign is often a water stain on the ceiling below. By the time you see it, the subfloor is compromised. A Schluter rebuild fixes it permanently.
Pricing for Bathroom Remodeling in Midway City, CA
Here’s what we’re actually quoting in Midway City right now. A cosmetic refresh, new vanity, toilet, mirror, light, and paint, runs $8,000 to $14,000. A full hall bath remodel with PEX repipe, Schluter waterproofing, tile shower, and new fixtures lands between $18,000 and $26,000. A primary suite gut with custom tile, panel upgrade, and structural reinforcement under a new tub starts around $30,000 and can reach $42,000 depending on finish level. If your bathroom is adjacent to an ADU we’re building, the remodel often costs less per square foot because mobilization, design, and permits overlap.
What moves the number: the package of county-required upgrades (repipe, panel, venting), tile selection, and whether we’re working around a second-story unit or a slab-on-grade footprint near the Golden West Street corridor. Call (877) 658-7475 for a free estimate. We price from a site walk, not a square-footage formula.
We Also Serve Cities Near Midway City
Our Midway City clients often ask us to handle bathroom remodels on rental properties they own in neighboring cities. We serve Westminster, Garden Grove, Fountain Valley, and Huntington Beach with the same in-house crew and the same written-pricing discipline. If your Midway City project includes a secondary unit or a family property one city over, we can scope both in a single estimate.
Serving Midway City, CA — Our Local Coverage Area
We’re based in the Midway City 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 – Bathroom Remodeling in Midway City
Midway City is unincorporated Orange County, so all building permits for the 92655 ZIP are issued through OC Public Works and the county’s OCTAP program, not a city hall. A contractor who files with Westminster or Garden Grove by mistake creates a rejected application and delays your inspection schedule. Call (877) 658-7475 if you’re unsure which jurisdiction applies to your address, and we’ll verify it before any work begins.
Galvanized supply lines, undersized floor framing, dry-rotted subfloors under original fixtures, and 60-amp electrical panels are the four we see most. Homes off Bolsa Avenue and Brookhurst Street were built fast during the postwar housing boom, and the original materials are often still in place. We inspect before demolition and write allowances for the likely fixes, so the quote you sign reflects what we expect to find, not a best-case scenario.
Yes, in most cases where the permit scope includes plumbing or electrical changes. OC Public Works enforces current California Plumbing Code and Electrical Code on permitted remodels, which often means a full copper or PEX repipe, a panel upgrade, and proper venting. These are the same upgrades neighboring Westminster might not trigger for an identical scope, and they’re priced into our Midway City estimates from the start.
We inspect before demolition, write allowances for the specific issues common in 1950s tract ranches, and any surprise beyond the allowance is priced and approved in writing before we proceed. No silent add-ons. No “we’ll settle up at the end.” We recently opened up a hall bath in a 1958 tract ranch off Bolsa Avenue and found original galvanized supply lines patched with polybutylene, plus a 60-amp panel feeding a 20-amp bathroom circuit. After inspection, we repiped the bath in PEX, upgraded the panel to 100 amps, and replaced the failed copper pan with a Schluter waterproofing system, all priced and approved in writing before demolition began.
Yes, and this is where Casita ADU Builders operates differently than a standalone remodeling contractor. If your Midway City property includes or will include an ADU, the bathroom remodel and the ADU’s plumbing and electrical scope can be permitted and built together, which often reduces total cost and keeps a single warranty across both projects. Nolan Treffert’s team handles the bath remodel, the ADU construction, and the interior finishes under one contract, so a panel upgrade we install for the bathroom also serves the ADU instead of being paid for twice.
Written by Nolan Treffert, Owner at Casita ADU Builders, serving Midway City and greater Orange County.