Bathroom Remodel Permit in San Juan, TX (2026)

Research by DoINeedAPermit Research Team · Updated May 2026

The Short Answer

A full bathroom remodel in San Juan requires a permit if you're moving any plumbing fixture, adding electrical circuits, installing new ventilation, or modifying walls. Surface-only work — swapping a vanity or faucet in place — does not.

San Juan follows Texas Building Code (which adopts the 2015 IRC with state amendments), and the city's Building Department requires separate trade permits for plumbing, electrical, and mechanical work whenever those systems are altered. What sets San Juan specifically apart from larger metros like Austin or Houston: the city has no online permit portal — you file in person at San Juan City Hall, and there's no provisional approval system. This means your plan review happens over the counter or through a single site visit, not an asynchronous portal exchange. You cannot email plans and wait; you must present them at the counter. Expansive clay soils are common in this region, which can affect foundation-mounted plumbing runs, and inspectors flag improper slope on drain lines because of settling risk. The city also enforces the GFCI mandate aggressively in bathrooms (per NEC 210.8) — inspectors will reject a rough electrical plan if outlet locations and GFCI protection strategy are not clearly marked. For pre-1978 homes, lead-paint disclosure and containment rules apply to any surface disturbance.

What happens if you skip the permit (and you needed one)

Stop-work order issued by the city: $300–$500 fine, plus you must pull a permit retroactively and pay double the original permit fee ($400–$1,600 total on a $800-remodel permit).
Insurance denial on water damage: if a plumbing or electrical fault causes damage and you filed no permit, your homeowner's claim is often rejected, leaving you $5,000–$25,000 out of pocket.
Lender or title company blocks refinance: appraisal flagged unpermitted work, forcing removal or costly retroactive permits ($1,000–$3,000 each trade).
Neighbor complaints (rare in bathrooms, but possible if electrical fires or water intrusion affects an adjoining wall): city can demand removal or permit-and-repair at your expense.

San Juan full bathroom remodels — the key details

Framing and structural changes trigger additional permits and inspections. If you're moving or removing a wall, you need a framing permit and possibly a structural engineer's stamp (if the wall is load-bearing). Even non-load-bearing wall moves require a framing permit in San Juan because the city needs to verify drywall fire-ratings and blocking for fixtures. A typical full bathroom remodel includes drywall removal to access plumbing and electrical; the framing permit covers this. When you submit plans, include a framing sketch showing wall locations, fixture locations (toilet, sink, tub/shower), and blocking for grab bars or future accessibility. Inspectors will do a framing inspection after drywall is removed but before new drywall is installed. The inspection verifies blocking is in place, studs are properly spaced, and plumbing/electrical rough-ins are correctly positioned. If you're installing grab bars, IRC standards require blocking at 33-36 inches high, rated to 250 pounds lateral load. Many remodels skip the blocking during framing, then try to add it after drywall — inspectors will call this out and may require drywall removal. The city's final inspection also checks drywall tape and mud quality; cosmetic work, but inspectors use it to confirm the job is done to code standard.

Three San Juan bathroom remodel (full) scenarios

Scenario A

Vanity and faucet swap in place, new tile around existing tub — North San Juan tract home

You're replacing the existing 30-inch vanity with a new 36-inch vanity in the same location, swapping out the faucet, and re-tiling the wall behind the tub (no moving the tub itself, no plumbing reroute). This is a surface-only cosmetic remodel and does not require a permit in San Juan. The existing supply and drain lines stay in place; you're just connecting new shutoffs and P-traps to the new vanity. The tile work is adhesive-and-grout, not a waterproofing assembly change. You can hire a contractor or do it yourself without filing anything. However, if the vanity replacement involves opening the wall to access supply lines and you discover the wall behind the existing vanity is not properly waterproofed (no cement board or membrane), you have two choices: leave it as-is and accept the risk of future water damage, or stop, pull a permit, and bring the wall up to code (which adds $500–$1,000 and 3-4 weeks). Most homeowners in San Juan choose the first path, understanding the risk. Cost: $2,000–$5,000 total (vanity $400–$800, faucet $300–$700, labor $1,300–$3,500, tile included). No permit fees. Timeline: 1-2 weeks.

Scenario B

Moving toilet to new location (3 feet over), new exhaust fan, tub stays in place — Central San Juan older home (1970s)

You're relocating the toilet to a new spot 3 feet away from the existing location (to make room for a larger vanity on the opposite wall). The tub and shower stay where they are. You're also adding a new exhaust fan because the current bathroom has no ventilation. This triggers a plumbing permit (toilet relocation) and a mechanical permit (new exhaust fan). The plumbing permit requires a plan showing the new toilet location, the drain run from the new location to the main vent stack, and the trap arm length (which must be 6 feet or less; if it's longer, you'll need an engineer's review or a secondary vent, adding cost). The drain slope must be 1/4 inch per foot, and the contractor must verify this during rough-in inspection. San Juan's soil is expansive Houston Black clay in much of the region; inspectors will check that the drain line is properly bedded and won't shift if the foundation moves (rare but possible). The mechanical permit covers the exhaust fan duct routing. The fan must duct to the outside (not the attic), with a 4-inch duct minimum. If the run exceeds 25 feet, a larger fan is needed. Typical plan review: 2-3 weeks. Inspections: rough plumbing (after drain is buried in the slab or floor), rough mechanical (after duct is run), final plumbing and mechanical (after drywall, to verify termination). Cost: plumbing permit $250–$350, mechanical permit $150–$250. Contractor labor for relocation: $1,500–$2,500 (jackhammer floor, reroute drain, patch slab). Fan installation: $400–$800 (fan unit $200–$400, ductwork and labor $200–$400). Total: $3,000–$4,500. Timeline: permit review 2-3 weeks, construction 3-5 days, inspections 1-2 weeks.

Scenario C

Full gut remodel: tub-to-shower conversion, new vanity location, new electrical circuits for heated floor and mirror, wall framing to enlarge space — Central San Juan home with potential lead paint (pre-1978)

You're gutting the entire bathroom: removing the existing tub and converting to a walk-in shower with a custom pan, moving the vanity to the opposite wall, removing a non-load-bearing wall to expand the space, adding heated floor mats and a heated mirror (new electrical circuits), and installing a new exhaust fan. This is a comprehensive permit job requiring plumbing, electrical, mechanical, and framing permits. Because the home is pre-1978, EPA RRP Rule applies: the contractor must be certified, and you must receive a lead-hazards pamphlet before disturbance begins. The plumbing permit covers the shower pan waterproofing assembly (cement board plus liquid membrane, or synthetic pan per manufacturer spec), drain routing, vanity relocation, and fixture connections. The code requires a pan liner and sloped floor (minimum 1/4 inch per foot to drain). Inspectors will fail rough drywall/framing if they don't see the membrane installed. The electrical permit covers two new circuits: one for the heated floor mat (typically 20 amp, GFCI-protected, per NEC 210.8), and one for the heated mirror (typically 20 amp). Every outlet must be GFCI-protected. The plan must show circuit assignments, outlet locations, and switch placement. The mechanical permit covers the new exhaust fan (if not already in place). The framing permit covers wall removal (inspector will verify non-load-bearing status or require an engineer's stamp) and drywall fire-rating. Plan review is thorough: 3-4 weeks because of the complexity. Inspections: (1) Framing — after drywall is removed, before new framing; (2) Waterproofing — after shower pan membrane is installed, before tile; (3) Rough plumbing and electrical — after stubs and runs are in place, before drywall; (4) Drywall — after new drywall is hung; (5) Final — after tile, fixtures, and electrical trim are complete. Permit fees: plumbing $300–$400, electrical $250–$350, mechanical $150–$250, framing $200–$300. Total permits: $900–$1,300. Contractor labor and materials: gutting/framing $3,000–$5,000, shower pan and waterproofing $1,500–$2,500, vanity and sink $800–$1,500, tile $1,500–$3,000, electrical and fixtures $1,500–$2,500, exhaust fan $400–$800, heated floor and mirror $600–$1,200. Total: $10,000–$17,000 (not including your own labor if you're doing demo). Timeline: permits 3-4 weeks, construction 4-6 weeks, inspections interspersed over 2-3 weeks.

Plumbing permit required (tub-to-shower conversion, fixture relocation) | Electrical permit required (heated floor and mirror circuits, GFCI protection) | Mechanical permit required (new exhaust fan) | Framing permit required (wall removal) | Lead-paint disclosure required (pre-1978 home) | Waterproofing membrane inspection mandatory | $10,000–$17,000 total cost | $900–$1,300 permit fees

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Shower waterproofing in San Juan: why inspectors scrutinize it

The most common reason San Juan inspectors fail bathroom remodels is inadequate shower or tub waterproofing. IRC R702.4.2 requires a continuous, impermeable barrier behind tile in wet areas. The code allows cement board (not drywall) plus a liquid membrane, or a synthetic pan system. Many DIYers and inexperienced contractors use regular drywall with caulk, which fails within 2-3 years as water penetrates behind the tile and rots the framing. San Juan's climate (coastal or central, humid) accelerates this decay. When you apply for a permit, your plumbing or framing plan must specify the waterproofing method in writing: for example, 'Schluter shower pan with synthetic membrane and tile' or 'Cement board with Redgard liquid membrane and tile.' If you don't specify it, the inspector will ask, and if the contractor can't answer, the rough inspection fails.

During the rough inspection (after framing and plumbing rough-in but before drywall), the inspector will verify the waterproofing layer is installed and correct. If you've installed cement board, the inspector checks that it's attached with corrosion-resistant fasteners and taped at joints. If you've used a liquid membrane, the inspector verifies it's applied per the manufacturer's spec (thickness, overlap, cure time). If you've skipped this step and gone straight to drywall, the inspector will stop the job. You'll have to remove drywall, install the membrane, and wait for re-inspection. This adds 1-2 weeks and $500–$1,000 in labor.

A common shortcut is using regular drywall and a waterproofing primer/sealant. San Juan's inspectors will not accept this because the drywall core still absorbs moisture and fails over time. If your contractor suggests this, push back. The code is clear, and the city enforces it. If you've already tiled over poor waterproofing, you have a choice: live with the risk (and accept potential future wall rot and mold), or request a permit-and-repair and do it right. Most homeowners choose to live with it, but it's a known liability that can affect resale and insurance.

San Juan's in-person filing process: no portal, so plan ahead

Unlike Austin, Houston, or Dallas, San Juan has no online permit portal. You must file permits in person at San Juan City Hall. This means you cannot email plans and check back online; you must visit the building counter with two printed sets of plans (plumbing, electrical, framing, and/or mechanical, depending on the scope). The building official or plan reviewer will review them on the spot, ask questions, and either approve or request revisions. If revisions are needed, you leave, make the changes, and come back. This can add 1-2 weeks to the review cycle. Plan review itself takes 2-4 weeks; the city is not fast, but it's thorough. Once approved, you receive a permit card (or permit number) and can schedule your first inspection.

Inspections are also scheduled by phone or in person. You call the building department the day before you're ready, and the inspector schedules a time the next day (usually morning). Rough inspections (framing, plumbing, electrical) are relatively quick (30-45 minutes). Final inspection takes longer (1-2 hours) because the inspector checks everything: tile grout, paint, fixtures, outlets, ductwork termination, and grab bar blocking. If the inspector finds a deficiency, you correct it and call back for a re-inspection. Plan for at least 3-5 inspection cycles on a full bathroom remodel.

The city's hours are Monday through Friday, 8 AM to 5 PM, with a lunch break from 12 to 1 PM. If you work a standard job, filing requires a lunch hour or half-day off. Some contractors handle this; others ask the homeowner to file. If you're an owner-builder, you must file yourself. Bring your property deed or tax certificate to prove ownership. The city charges a small filing fee ($25–$50) on top of permit fees. Keep your permits visible in the home during construction; inspectors look for them on arrival.

City of San Juan Building Department
San Juan City Hall, San Juan, Texas (exact address available via Google or local directory)
Phone: Verify with City of San Juan main number; building department extension typically listed on city website | No online portal — file in person at City Hall
Monday–Friday, 8 AM–5 PM (closed 12–1 PM lunch)

Common questions

Can I install a new toilet in the same location without a permit?

Yes. Replacing an existing toilet with a new one in the same location (same drain line) does not require a permit — it's a fixture swap. You only need a permit if you're relocating the toilet to a new spot. Even a simple tank replacement on the existing flange is permit-free. However, if you discover water damage or settling around the old flange during removal, you should pull a permit and have an inspector verify the drain slope and seal before you install the new toilet.

Do I need a permit to add a second exhaust fan in an existing bathroom with one fan already?

Yes, you need a mechanical permit. Adding a second exhaust fan is a new system addition. You must show duct routing and termination location on the mechanical plan. The city also wants to verify the fans don't interfere with each other or the HVAC system. Typical mechanical permit in San Juan is $150–$250 and review is 2-3 weeks.

Is a tub-to-shower conversion a major remodel that requires multiple inspections?

Yes. Converting a tub to a shower changes the waterproofing assembly and drain configuration, so it triggers a plumbing permit and a waterproofing inspection. You'll have a rough plumbing inspection (after drain and rough-ins), a waterproofing inspection (after the pan membrane is installed), and a final inspection (after tile and grouting). Expect 3-4 inspections and 4-6 weeks total timeline.

What if my bathroom is in a pre-1978 home and I'm not sure if there's lead paint?

Assume there is. EPA RRP Rule requires contractors to be certified for any disturbance of painted surfaces in homes built before 1978. The contractor must use lead-safe work practices (containment, HEPA vacuum, wet cleanup) and provide you with a lead-hazards pamphlet before work starts. You should also consider a lead test (typically $300–$600) before renovation to identify high-risk areas. San Juan inspectors will ask about lead compliance during the framing inspection.

Do I need an engineer for a wall removal in my bathroom?

Only if the wall is load-bearing. A non-load-bearing wall (one that does not support joists or rafters above) can be removed with a framing permit alone. If you're unsure, the building department can advise during plan review. If the wall is load-bearing, you'll need a structural engineer's stamp, which costs $400–$800 and adds 1-2 weeks to the review timeline.

Why do inspectors care about exhaust fan duct termination?

Code requires the duct to terminate outside, not in the attic or crawlspace. Many DIYers route the duct into the attic to avoid an external wall penetration, which causes moisture to accumulate and promotes mold in the attic. Inspectors in San Juan specifically check this during final inspection because the region's humidity makes attic mold a real risk. A proper outside termination with a damper and flap costs $100–$200 extra but prevents long-term damage.

Can I pull a permit myself as an owner-builder, or do I need a contractor?

You can pull a permit yourself as an owner-builder in San Juan, but only if you're the owner-occupant. You must file in person at City Hall with your deed and two sets of plans. If you hire a contractor, they can apply for the permit on your behalf with written authorization, but you're still responsible for inspections and code compliance. Many owner-builders choose to hire contractors to handle the permits and inspection scheduling, which costs a small fee (typically $100–$300) but saves headaches.

What happens if I install new outlets in my bathroom without pulling an electrical permit?

If you add outlets and do not pull a permit, the work is unpermitted and not inspected. If there's a fire, shock hazard, or ground-fault incident tied to those outlets, your homeowner's insurance may deny the claim. If you later refinance, the lender's inspector may flag the unpermitted outlets and require a permit-and-inspection or removal. Most lenders in Texas require permits for any electrical work. San Juan's building department does not typically police unpermitted electrical work unless a neighbor complains or a major incident occurs, but the risk is yours to accept.

How much does a typical full bathroom remodel permit cost in San Juan?

For a full remodel (plumbing, electrical, mechanical, framing), expect $900–$1,300 in permit fees combined: plumbing $300–$400, electrical $250–$350, mechanical $150–$250, framing $200–$300. These are rough estimates; the city may adjust based on project valuation. If the remodel is estimated at $10,000–$15,000 in labor and materials, permits typically run 6-10% of that. The city may also charge a small filing/administrative fee ($25–$50) per permit.

Can I do a bathroom remodel in phases to avoid pulling multiple permits?

Not legally. Each phase that involves plumbing, electrical, or structural changes requires a separate permit. The building department can see unpermitted work during inspections for later phases and will cite you or demand a retroactive permit. The cost of a retroactive permit (often double) plus potential fines makes it more expensive than filing up front. If you're budgeting a remodel over time, file one master permit that covers all phases, then schedule inspections as work progresses.

Disclaimer: This guide is based on research conducted in May 2026 using publicly available sources. Always verify current bathroom remodel (full) permit requirements with the City of San Juan Building Department before starting your project.

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