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Bathroom Remodeling in San Marino, CA: What It Costs and What the DRB Actually Requires
A full bathroom remodel in San Marino typically runs $9,000 to $28,000 depending on whether your home falls under Design Review Board jurisdiction, which most pre-1950 estates do. The bigger variable isn’t tile or fixtures, it’s whether your project touches an exterior wall, a vent stack, or a window opening, because in San Marino that can add months of review before a single wall comes down. Tom Barrett and his sons have worked inside enough 1920s Spanish Colonials and Mediterranean Revivals here to know exactly where the DRB line sits, and we put every scope in writing before we pull a permit. Call (877) 610-1318 and we’ll walk your property, tell you what triggers review, and hand you a written estimate the same week.
Key Takeaways for San Marino Homeowners:
- Bathroom remodels in San Marino cost $9,000-$28,000; smaller baths run $5,000-$12,000.
- Any change to an exterior wall, vent, or window on a pre-1950 home triggers Design Review Board review.
- Original lath-and-plaster walls need period-correct repair, not generic drywall patches that crack within months.
- Written change orders are standard on every Barrett & Sons job; so are permits pulled and inspections signed.
- The 90-Day Done Right Promise covers the work, in writing, on every contract.
Why Barrett & Sons Construction Is San Marino’s Preferred Bathroom Remodeling Company
Barrett & Sons has been owner-operated since 1998, and the crews working in San Marino are Tom’s sons and their teams, not dispatched strangers. Homeowners in the 91108 and 91118 ZIP codes call us because we already know what the DRB wants before we file. That knowledge saves weeks. On a 1930s Spanish Colonial off Lorain Road, our crew was brought in after a previous contractor tried to install a modern walk-in shower and compromised the original lath-and-plaster walls. We rebuilt the structural framing behind the original wall line, matched the period lime-based stucco on an exterior vent relocation, and installed a Kohler Purist suite with a frameless glass enclosure that cleared DRB inspection without a single change order. That’s the kind of outcome you only get from a company that has done it in San Marino before.
Tom Barrett publishes his name, his address, and his license number. Look it up before you sign anything. A live person answers the phone around the clock, not a voicemail box. And we carry the four standing offers you’ll find everywhere we work: $40 off any repair over $200, a free second opinion on any written estimate, no trip charge inside the county, and a permanent 10% senior and veteran discount. We answer our own phones, and we show up when we say we will.
Our Bathroom Remodeling Services in San Marino
Most San Marino bathrooms we open up were last touched before Eisenhower was president. That means original tile, original plumbing, and original framing that’s been settling for 80-plus years. Here’s what we do most often for homeowners in this city:
Full Bathroom Remodeling
A full remodel in San Marino means working carefully around original lath-and-plaster walls, old-growth Douglas fir studs, and tile that a previous owner may have already damaged. We keep what’s worth keeping, replace what’s structurally failing, and bring the rest up to code without erasing the room’s period character. Expect $9,000-$28,000 depending on square footage, waterproofing scope, and whether the DRB gets involved.

Walk-In Showers & Shower Remodeling
Walk-in showers are the single most requested upgrade in San Marino, largely because owners of 1920s-1940s estates want to age in place without leaving the house. Installation runs $4,500-$12,000, but the unknown is what’s behind the wall. If a previous contractor used generic gypsum board to patch original plaster, we’ll find it when we open the surround, and we’ll fix it before the new tile goes in.

Tub-to-Shower Conversion
Converting a bathtub to a walk-in shower in San Marino costs $3,500-$10,000. Inside the 91108 ZIP, this job frequently triggers DRB review when the drain location shifts or a vent pipe needs to move. We submit the plans, we handle the review, and we build to period-correct exterior details so you don’t get a stop-work order halfway through. Budget for the conversion plus whatever masonry patching the board requires.

Vanities, Tile & Fixtures
Vanity installation in San Marino runs $800-$3,000, but the finish matters more than the price. A modern vessel sink or floating vanity that clashes with the home’s original Spanish Revival millwork will fail the architectural consistency review and cost you double when you have to replace it. We help you choose vanities, tile, and fixtures that hold DRB scrutiny and look like they’ve been there since 1932.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in San Marino
We carry and install brands you can look up yourself: Kohler plumbing fixtures, KraftMaid cabinetry, and quartz surfaces from Cambria where the design calls for them. For San Marino clients, we keep a working stock of period-appropriate tile profiles and lime-based stucco patches so minor DRB corrections don’t stall a project for weeks. If you’re doing exterior hardscape alongside the bathroom, Techo-Bloc and Cambridge Pavers are the paver lines we trust most in this area. We don’t install mystery brands off the back of a van, and we don’t expect you to sign for materials you’ve never heard of.
Common Bathroom Remodeling Problems We See in San Marino Homes
- Drywall patches over original plaster. Generic gypsum board and modern joint compound on lath-and-plaster walls cracks within months in San Marino’s settlement patterns and humidity swings. We repair with original-gauge plaster and proper bonding agents, which is slower but stays intact.
- Vent relocations done without DRB plans. Relocating an exhaust fan or vent stack without submitting plans to the Design Review Board leads to a stop-work order and full removal of the new exterior stucco. The fix is submitting first, building second.
- Vessel sinks and floating vanities that fail consistency review. A modern fixture in a Mediterranean Revival bathroom can fail the DRB’s architectural consistency check, which means buying a replacement and redoing the install. We steer you toward period-appropriate millwork from the first conversation.
- Hidden cripple wall and subfloor weakness behind new tile. Many San Marino bathrooms sit over unbraced cripple walls or unbolted sill plates. A full remodel without a seismic upgrade means beautiful new tile hiding structural weakness the next earthquake will find. We’ll show you the framing and give you a written scope for whatever needs attention.
Pricing for Bathroom Remodeling in San Marino, CA
Here’s what you should expect to spend in San Marino, line-item by line-item:
| Scope | San Marino Price Range |
|---|---|
| Full 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 |
| Bathroom Vanity Installation | $800-$3,000 |
The wide spread reflects what the DRB may require, not a contractor padding the bid. A tub-to-shower conversion where the vent relocates and the board wants matching lime stucco costs more than one that stays purely interior. We give you a written line-item quote before work starts, and every price change after that comes as a written change order before we touch anything. Call (877) 610-1318 for a free estimate with real numbers for your specific bathroom.
How San Marino’s Housing Stock Changes the Remodel Math
San Marino is one of the few cities in Southern California where virtually all construction work is high-end residential renovation of 1920s-1940s estate homes. Spanish Colonial Revival, Mediterranean Revival, Tudor Revival. The Design Review Board enforces architectural consistency with the city’s historic character, which means any exterior modification, addition, or new construction gets scrutinized for period-appropriate materials and roofline pitch. For a bathroom remodel, that review matters the moment a vent relocates, a window opening shifts, or an exterior wall gets touched. A simple exhaust fan relocation that Pasadena wouldn’t blink at can add six to twelve weeks of review in San Marino. That’s not bureaucracy for its own sake, it’s why the city still looks the way it looked in 1940. But it does mean your contractor needs to plan for it from day one.
The housing stock itself is almost entirely large single-family estates built between 1920 and 1950. Original lath-and-plaster walls. Old-growth Douglas fir framing. Unreinforced masonry. Clay tile roofs, often original Gladding-McBean or similar. When you open a bathroom wall in the 91108 ZIP, you’re not looking at modern lumber. You’re looking at framing that’s been holding for eight decades and plaster that has its own moisture and settlement rhythm. Matching that matters. Every decision, from the type of compound we use on patches to the tile profile on a curb, has to answer one question: will this hold up and will the DRB accept it. A contractor who doesn’t already know the answer is learning on your budget.
We Also Serve Cities Near San Marino
Our Bathroom Remodeling team works throughout the San Gabriel Valley. If you’re in San Gabriel, East San Gabriel, Alhambra, or East Pasadena, the same written-scope, permit-pulling, DRB-aware approach applies. For a closer look at how we serve the city itself, visit our San Marino page.
Serving San Marino, CA - Our Local Coverage Area
We’re based in the San Marino 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 San Marino
No, not if the work stays entirely interior and no vent stack, window opening, or exterior wall is touched. The moment a vent relocates or an exterior stucco patch is needed, DRB review likely applies. We’ll tell you on the first walkthrough whether your conversion stays interior-only or heads to the board. Call (877) 610-1318 and we’ll map out exactly what your job triggers before you spend a dollar.
You cut the minimum opening needed, stabilize the surrounding lath with plaster washers, and patch with original-gauge lime plaster rather than modern joint compound. Modern compound dries harder and less flexible than the original plaster, which is why it cracks within months. Our crew has done this in San Marino bathrooms repeatedly and the patches stay put. We’ll show you what we’re using and why before we open the wall.
Yes, interior vanity tops generally fall outside DRB architectural review, provided the vanity itself matches the room’s millwork language. The board cares about exterior consistency first, but any interior change that reads as stylistically jarring can draw scrutiny during a broader review. We’ll help you pick quartz, marble, or period-look tile that holds up visually and has zero DRB friction.
Plan on four to six months, with the first four to twelve weeks consumed by design review before demolition starts. Once we submit plans, San Marino’s DRB typically takes four to eight weeks for initial comments, and resubmissions add more time. Budget the review window into your schedule and you won’t be surprised. We’ll give you a written timeline at the estimate.
Original Gladding-McBean tile usually has a slightly uneven glaze, minor pooling around the edges, and a back stamp with the company’s markings, though the stamp is often hidden behind mortar. Color saturation is deeper than most mid-century replacements. Call (877) 610-1318 and we’ll look at it together, because preserving original San Marino tile is almost always cheaper than replacing it with new material that won’t match the rest of the house.
Get Your San Marino Bathroom Remodel Estimate
Tom Barrett answers his own phone. When you call (877) 610-1318, you’ll get a live person, a scheduled walkthrough, and a written line-item estimate with real San Marino numbers, no trip charge inside the county. Every scope is in writing. Every allowance is in writing. Every change order is in writing. And the 90-Day Done Right Promise is on the contract where you can read it. Call today and we’ll start with the free estimate.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving San Marino homes with period-correct remodeling since 1998.







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