How Often Should You Replace Your Toilet? Complete Guide
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Most toilets last 25 to 50 years, but the smart replacement window is usually the 20-year mark. Here is what the signs,…
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Bathroom Inspection Checklist: What Home Inspectors Check
A thorough bathroom inspection goes far beyond whether the toilet flushes. Inspectors evaluate plumbing, ventilation, electrical safety, water damage, and fixture condition. This guide shows you exactly what they look for so you can spot problems before an offer or listing.
Why Trust Best Flushing Toilets
- Flushing power and MaP flush-test scores
- Water efficiency (GPF and EPA WaterSense)
- Aggregated owner reviews
- Clog resistance and trapway design
- Brand reliability and warranty
Research updated June 2026.
Quick Answer
A standard bathroom inspection covers 40 to 60 individual checkpoints across plumbing, ventilation, electrical, structure, and fixtures. Inspectors prioritize active leaks, improper venting, GFCI protection, and mold indicators. Most issues are minor; roughly 12 percent of inspections flag a plumbing defect serious enough to negotiate repair or credit.
What Does a Home Inspector Actually Check in a Bathroom?
A licensed home inspector evaluates the bathroom's plumbing supply and drain lines, toilet function and stability, sink and tub/shower operation, exhaust ventilation, GFCI electrical protection, caulking and grout integrity, and visible signs of water intrusion or mold. The inspection is visual and functional: the inspector operates every fixture but does not open walls or pressure-test pipes.
Recommended toilets in this guide
Inspectors follow ASHI (American Society of Home Inspectors) or InterNACHI standards of practice, both of which mandate checking all accessible plumbing fixtures and reporting evidence of leaks, improper venting, or safety hazards at electrical outlets near water sources.
Bathroom inspections matter disproportionately in real estate transactions. According to the National Association of Realtors, plumbing problems are among the top five defects discovered during home inspections, and the bathroom is the most plumbing-dense room in any home. A single slow leak behind a toilet can silently rot subfloor material for years before it surfaces in an inspection report.
The checklist below mirrors the sequence most inspectors follow during a standard single-family home inspection. It covers toilets, sinks, tubs, showers, exhaust fans, electrical outlets, and structural elements like floors, walls, and ceilings. Use it as a pre-listing audit or as a buyer's companion when reviewing your inspector's written report.
| Inspection Category | Common Issues Found | Severity Level | Typical Repair Cost Range |
|---|---|---|---|
| Toilet function and sealing | Phantom flush, wobble, wax ring leak | High | $80 to $350 |
| Exhaust ventilation | Duct terminates in attic, no fan | High | $150 to $500 |
| GFCI protection | Missing GFCI within 6 ft of sink | High (safety) | $80 to $200 |
| Caulking and grout | Missing caulk at tub/shower seam | Medium | $50 to $250 |
| Subfloor around toilet | Soft or spongy floor material | High | $400 to $2,500 |
| Sink drain and P-trap | Slow drain, improper trap depth | Medium | $60 to $200 |
| Shower pan / tub surround | Grout cracks, failed waterproofing | Medium to High | $200 to $3,000 |
| Water pressure at fixtures | Low pressure, inconsistent hot water | Medium | $100 to $800 |
How Do Inspectors Evaluate a Toilet?
Inspectors test every toilet by flushing it at least once, watching for proper bowl clearing, checking for phantom flush (a sign of a worn flapper), and pressing against the base to detect movement or rocking. A stable toilet sits flush against a sound subfloor with no side-to-side play; any wobble suggests the wax ring seal may be compromised or the closet flange has corroded.
Inspectors also verify the shut-off valve operates, that no supply line is corroded or braided-hose past its rated lifespan (typically 10 years), and that water does not drip from the tank-to-bowl connection or from the base after flushing.
The toilet checklist breaks into three zones:
Tank Inspection Points
- Fill valve operation: Water should stop rising at approximately one inch below the overflow tube. Continuous running indicates a worn fill valve or float calibration issue.
- Flapper seal: Drop a few drops of food coloring into the tank. If color appears in the bowl without flushing after 15 minutes, the flapper is leaking. This can waste 200 gallons of water per day according to EPA estimates.
- Tank lid: Check for cracks. A cracked tank is a safety hazard and cannot be adequately sealed.
- Condensation: Heavy condensation on the outside of the tank can drip onto the floor and degrade subfloor material. Common in humid climates.
- Supply line condition: Corroded metal lines or kinked braided hoses should be flagged for replacement.
Bowl and Base Inspection Points
- Flushing performance: The bowl should clear completely within one flush cycle. Inspectors note sluggish flush as a potential venting or trapway issue.
- Base stability: No rocking, no movement when pressed firmly from both sides.
- Caulk bead at base: The base should be caulked on the sides but left open at the rear (so any wax ring leak drains visibly rather than accumulating under the toilet undetected).
- Discoloration at base: Brown or dark staining on the floor around the base is a strong indicator of a past or active wax ring failure.
Water Efficiency Notes
While inspectors do not score a toilet's flush performance to MaP standards, buyers should know that modern EPA WaterSense-certified toilets use 1.28 GPF or less. Older 3.5 GPF or 5 GPF toilets found in homes built before 1992 are legal to leave but add significant water cost. High-performers like the TOTO Drake II (1.28 GPF, MaP Premium at 1,000 grams) and the American Standard Champion 4 (1.6 GPF, MaP score 1,000 grams) demonstrate that flushing power and efficiency are not mutually exclusive. See our best flushing toilets guide for scored comparisons.
Expert Take
A toilet that runs continuously is the single most common plumbing defect reported in home inspections. It costs almost nothing to fix with a $15 flapper kit, but it inflates water bills by $70 to $200 per year and signals to buyers that routine maintenance has been deferred. Sellers should replace every flapper and fill valve in the home before listing.
What Plumbing Items Beyond the Toilet Do Inspectors Examine?
Inspectors check every water-consuming fixture: sinks (hot and cold supply, drain speed, P-trap condition), bathtubs (overflow plate, drain stopper, tub surround waterproofing), and showers (pan integrity, door seals, pressure balance valve). They also look at visible drain cleanouts, note any evidence of prior leak repairs on supply lines, and check under vanities for active drips or water staining.
Water pressure is tested at each fixture. Most inspectors flag anything below 40 psi or above 80 psi at the fixture as noteworthy, since low pressure suggests a partially closed shutoff or supply line scale buildup, while excessive pressure can damage fixture internals over time.
Sink Checklist
- Hot and cold supply valves operate and do not leak.
- Drain speed: fill basin halfway, release stopper, water should drain without gurgling in under 30 seconds for a clear drain.
- P-trap is accessible, properly oriented (not reversed), and shows no corrosion through the wall of the trap.
- No water staining or warping on vanity cabinet floor beneath the drain connections.
- Pop-up stopper assembly (if present) opens and closes fully.
- Faucet aerator is not plugged with sediment causing spray pattern issues.
Tub and Shower Checklist
- Tub surround: Tiles are firm with no hollow sound (tap each tile). Grout is intact with no gaps wider than 1/16 inch at horizontal joints where water pools.
- Caulk at tub/wall joint: The horizontal seam where the tub deck meets the surround wall is the highest-risk caulk joint in a bathroom. Any gap here directs water behind the wall.
- Shower pan: Inspector presses on the pan floor to detect flex, which indicates rotted subfloor. Some inspectors perform a visual flood test if the pan can be plugged.
- Shower door or curtain rod: Doors seal without a gap at the bottom edge. Curtain rod is anchored securely into studs or rated anchors.
- Pressure balance or thermostatic valve: All showers in homes built after 1993 are required by most codes to have a pressure-balancing valve (ASSE 1016) that prevents scalding when a toilet is flushed. Inspectors note absent or inoperable anti-scald valves.
- Overflow plate: Present, properly seated, gasket intact (prevents water from running behind the tub through the overflow opening).
- Handheld wand or fixed head: Operates at both low and high flow without dripping from the stem when off.
What Electrical Issues Do Inspectors Look for in Bathrooms?
Every bathroom outlet within six feet of a water source must be protected by a GFCI (Ground Fault Circuit Interrupter) device under the National Electrical Code. Inspectors test every GFCI outlet and circuit breaker with a plug-in tester and flag any that do not trip within the required time. Missing GFCI protection is one of the most commonly cited safety defects in home inspections.
Inspectors also check that light fixtures rated for damp or wet locations are used above or inside the shower enclosure, that exhaust fan wiring is enclosed and not spliced with exposed wire nuts, and that no extension cords or multi-outlet strips are in permanent use.
Electrical Checklist
- All outlets within 6 feet of any sink, tub, or shower basin are GFCI-protected. A single GFCI outlet can protect downstream outlets on the same circuit.
- GFCI devices test and reset correctly with a plug-in receptacle tester.
- Light fixture above shower is rated at minimum "damp location" (recessed lights inside the shower zone must be "wet location" rated).
- No exposed wiring or open junction boxes visible at exhaust fan housing.
- Exhaust fan operates and vents to the exterior (not into the attic or crawl space).
- Bathroom is on a dedicated 20-amp circuit (required by NEC for all bathrooms in newer construction).
- No double-tapped breakers on the bathroom circuit (flagged at panel, not in bathroom itself).
How Do Inspectors Check for Water Damage and Mold?
Inspectors look for visual indicators of water intrusion: staining on ceilings (from a bathroom above), dark discoloration at the base of walls, bubbled or peeling paint, warped baseboards, and soft or spongy flooring. Bathrooms directly over finished living space are inspected from below whenever access exists, because slow toilet wax ring leaks almost always affect the ceiling below before they surface as visible floor damage.
Mold identification is outside the standard inspector's scope. Inspectors report "evidence of possible mold" or "microbial growth" and recommend specialist testing; they do not identify species. However, any black or green growth on grout, caulk, or drywall near water fixtures warrants further evaluation before closing.
Water Damage and Moisture Checklist
- Ceiling: Staining directly above or adjacent to fixtures suggests a leak from plumbing above. Inspect particularly around toilet and vanity drain lines.
- Floor around toilet base: Softness indicates subfloor rot from a wax ring failure. This is the most expensive single-fixture repair in bathrooms, often running $400 to $2,500 depending on extent of rot and floor material.
- Under vanity: Open cabinet and look for watermarks, swollen particleboard, or active drips on any supply or drain connection.
- Grout and caulk condition: Cracked grout in shower walls is an infiltration path. Missing or moldy caulk at the tub/wall horizontal joint is a near-certain path to wall cavity water damage over time.
- Exhaust ventilation: A bathroom without proper exhaust ventilation accumulates humidity over years, leading to mold on ceilings, grout blackening, and drywall paper degradation. An inspector will note the absence of a working fan vented to the exterior as a material defect.
- Window condition: Casement or single-pane windows in bathrooms are prone to condensation damage on the sill and frame. Inspectors check for rot, peeling paint, or failed glazing compound.
Expert Take
Subfloor rot around the toilet base is consistently the most expensive bathroom defect discovered in inspections, yet it is almost always caused by a $8 part: the wax ring. A wax ring that has compressed, dried, or shifted because the toilet rocked for years without being secured allows sewer gas and water to escape at the floor level on every flush. Pre-listing, any toilet that rocks even slightly should have the wax ring replaced and the closet flange inspected. Total cost: under $150 with a plumber. Discovered by a buyer's inspector: leverage for a $2,000 credit.
Ventilation Requirements by Code
The International Residential Code (IRC) requires all bathrooms without an openable exterior window of at least 3 square feet to have a mechanical exhaust fan ventilating directly to the exterior. Fan capacity must be at least 50 CFM for intermittent use or 20 CFM for continuous operation per HVI (Home Ventilating Institute) minimums. Inspectors flag fans that terminate in the attic as a defect, because attic-dumped bathroom exhaust causes moisture condensation on rafters and can lead to mold or structural deterioration.
Fixtures and Accessories Inspectors Note
Beyond plumbing and safety systems, a thorough inspection documents fixture condition that affects livability and may affect negotiating position:
- Toilet seat is present, hinged properly, and not cracked.
- Towel bars and toilet paper holder are anchored to studs or with appropriate hollow-wall anchors (not pull-out loose).
- Mirror is mounted securely if framed.
- Grab bars, if present, are rated and anchored to blocking or studs.
- Medicine cabinet door closes and latches.
- Vanity drawers and doors operate without obstruction.
What Inspectors Do NOT Check in Bathrooms
Understanding inspector scope prevents misaligned expectations:
- Inspectors do not open walls, ceilings, or floors. They cannot see behind tile or inside drain pipes.
- Inspectors do not run a sewer scope (a separate, specialized service that costs $150 to $400 and is strongly recommended for homes over 20 years old).
- Inspectors do not identify mold species. A positive visual indication requires separate environmental testing.
- Inspectors do not assess the aesthetics of fixtures. Scratched tubs, dated tile, and mismatched hardware are noted only if they affect function.
- Inspectors do not test water quality (hardness, pH, lead content). A separate water test is recommended for well-sourced homes and for homes with older galvanized supply lines.
How Should Sellers Prepare a Bathroom Before a Home Inspection?
Sellers should complete a self-audit using the same checklist an inspector will use: replace worn flappers and fill valves, re-caulk any gaps at the tub/wall seam and around the toilet base, anchor any loose toilet (re-set wax ring if it rocks), clean exhaust fan grilles and test fan operation, and verify all GFCI outlets test and reset correctly. Most of these items take under two hours and cost under $100 total in parts.
Addressing items proactively prevents a buyer's inspector from generating a defect list that triggers a renegotiation or repair request. Sellers who disclose proactive repairs with receipts often gain credibility with buyers and avoid post-inspection price reductions.
Pre-Listing Bathroom Repair Priority List
Rank these by cost-to-fix versus negotiating leverage lost if discovered:
- Rocking toilet: Re-set wax ring and bolt to floor. ($80 to $150 with plumber)
- Running toilet: Replace flapper and fill valve. ($15 to $40 DIY or $80 with plumber)
- Missing or failed caulk at tub/wall seam: Remove old caulk, apply 100% silicone. ($15 to $50 DIY)
- Non-functional exhaust fan: Replace fan or repair ductwork. ($60 to $300)
- GFCI outlets: Install GFCI outlet on bathroom circuit. ($15 to $80 per outlet DIY or with electrician)
- Slow sink drain: Clear P-trap blockage. ($0 to $60 DIY)
- Grout touch-up: Apply grout pen or re-grout cracked lines. ($10 to $80 DIY)
- Under-sink drip: Replace supply lines and drain connections showing any corrosion.
Specific Toilet Models That Pass Inspection with No Issues
If a bathroom inspection reveals an aging toilet with poor flushing, rocking issues, or active leaks, replacement is often more cost-effective than repeated repair. Based on MaP flush-test data and published specifications, these models have documented track records:
| Model | GPF | MaP Score | EPA WaterSense | Trapway Size | Best For | Check Price |
|---|---|---|---|---|---|---|
| TOTO Drake II | 1.28 | 1,000 g (Premium) | Yes | 2-1/8 in fully glazed | Best all-around performance | Check price |
| American Standard Champion 4 | 1.6 | 1,000 g | No (1.6 GPF) | 4 in fully glazed | Maximum clog resistance | Check price |
| Kohler Cimarron | 1.28 | 800 g+ | Yes | 3 in | Mid-budget reliability | Check price |
| TOTO Aquia IV | 1.0 / 0.8 | 800 g (flush 1) | Yes | 2-1/8 in glazed | Water conservation | Check price |
| American Standard Cadet 3 | 1.28 | 700 g+ | Yes | 3 in | Budget-friendly WaterSense | Check price |
| Woodbridge T-0001 | 1.28 | 800 g+ | Yes | 3 in | Modern one-piece look | Check price |
MaP scores above 500 grams are considered passing for household use; MaP Premium (1,000 grams) is the highest rating. All EPA WaterSense toilets use 1.28 GPF or less. For detailed flushing analysis, see our guides on TOTO Drake toilet review and American Standard Champion 4 review.
Bathroom Inspection and Older Homes: What to Watch For
Homes built before specific code milestones carry predictable inspection flags:
| Home Era | Common Bathroom Defects | Primary Concern |
|---|---|---|
| Pre-1978 | Lead paint on window sills, old cast-iron drain lines, polybutylene supply pipes (if replumbed 1978-1995) | Material safety and drain capacity |
| 1978 to 1992 | 3.5 GPF or higher toilets, fiberglass tub degradation, no GFCI protection in older permitted work | Water cost and electrical safety |
| 1993 to 2005 | Missing pressure-balance valve in shower, 1.6 GPF low-profile toilets with poor flushing | Scald safety, flushing performance |
| 2006 to present | Generally code compliant; spot-check exhaust duct routing and GFCI daisy-chaining | Installation quality variations |
If you are evaluating whether a toilet replacement is necessary after an inspection, our when to replace a toilet guide and the complete toilet buying guide walk through decision criteria and sizing considerations by bathroom type.
How to Read a Home Inspection Report: Bathroom Section
Inspection reports use standardized severity language. Understanding the terminology helps buyers prioritize repair requests:
- Safety hazard: Requires immediate attention. Missing GFCI, no anti-scald valve, or exposed electrical wiring fall here. Always negotiate repair before closing, not credit.
- Material defect: A condition that significantly affects the value or habitability of the property. Active toilet base leak, failed shower pan, or non-functional exhaust fan qualify. Typically the subject of buyer repair requests.
- Maintenance item: Items that are working but show wear. Slow drain, worn caulk, or a toilet that runs briefly after flushing. Buyers note but rarely negotiate these.
- Recommend further evaluation: Inspector identified something requiring specialist review. A spongy floor around the toilet, a musty odor without visible source, or an exhaust fan duct that could not be traced to exterior all warrant a plumber or contractor visit before finalizing the deal.
Frequently Asked Questions
Does a home inspector flush every toilet?
Yes. Standard ASHI and InterNACHI inspection practice requires the inspector to operate every toilet at least once, observe the flush cycle, check for phantom running, and press against the base to test stability. If the water to the home is off at the time of inspection, the inspector will note that they could not test the toilets.
What happens if the inspector finds mold in the bathroom?
The inspector will document "evidence of possible microbial growth" and recommend specialist evaluation. They will not identify the species. Buyers typically hire an environmental hygienist ($200 to $400) to sample and identify the mold before deciding to negotiate remediation costs or exit the contract.
Is a running toilet a serious inspection defect?
It depends on severity. A toilet that runs briefly for 10 to 15 seconds after each flush is a minor maintenance item. A toilet that runs continuously wastes up to 200 gallons per day per EPA estimates and may indicate a failing fill valve or damaged overflow tube -- reported as a material defect that affects utility costs.
Can a bathroom fail a home inspection?
Home inspections do not use a pass/fail system. Inspectors document conditions. A bathroom with multiple defects -- failed GFCI, active leak, non-venting exhaust fan -- generates a detailed defect list that buyers use to negotiate repairs or price reductions. There is no threshold that "fails" a bathroom; the buyer and their agent interpret the findings.
What is a phantom flush and should I fix it before selling?
A phantom flush (or ghost flush) is when the toilet refills on its own without being flushed. It is caused by a worn flapper allowing water to slowly leak from tank to bowl until the fill valve triggers. A flapper replacement costs $5 to $15 and takes 10 minutes. Fix it before listing -- it is a very visible and easily avoided defect.
Do inspectors check the toilet's flush volume (GPF)?
Standard home inspectors do not measure GPF. They assess whether the toilet functions properly, not its efficiency rating. However, the toilet model is sometimes noted in the report. EPA WaterSense certification and MaP testing data are relevant when you choose a replacement, not during the inspection itself.
How long does a bathroom inspection take?
An inspector typically spends 10 to 20 minutes in each full bathroom during a standard home inspection. A half bath (toilet and sink only) takes 5 to 10 minutes. More time is spent if there are access restrictions, apparent water damage, or complex plumbing configurations.
Does the inspector check under-vanity plumbing?
Yes. Opening cabinet doors under the sink is standard practice. Inspectors look at the P-trap for corrosion or incorrect configuration, check supply shut-off valves for drips, and look at the cabinet floor and back wall for water staining that suggests past or ongoing leak activity.
What is a closet flange and why does it matter?
The closet flange is the fitting that connects the toilet's drain horn to the drain pipe in the floor. If the flange is corroded, cracked, or set too low relative to the finished floor, the toilet cannot seat properly on the wax ring and will rock. Inspectors flag an unstable toilet; a plumber assessing that toilet often finds a failed flange beneath.
Should I replace the toilet if it is just old?
Age alone is not a reason to replace a functioning toilet. A toilet with no cracks, stable base, effective flush, and intact tank components can last 50 or more years. However, toilets manufactured before 1992 use 3.5 to 7 GPF versus today's 1.28 GPF WaterSense standard, representing significant annual water cost. Replacement for efficiency, not failure, is a valid economic decision.
What GPF is considered efficient for a toilet today?
EPA WaterSense certification requires 1.28 GPF or less. Some dual-flush models like the TOTO Aquia IV use 1.0 GPF for liquid waste and 0.8 GPF for the reduced cycle. These are among the most water-efficient toilets currently available with MaP test scores above 500 grams, confirming they clear waste adequately despite low water volume.
What is MaP testing and is it relevant to inspections?
MaP (Maximum Performance) testing is an independent third-party protocol that measures how many grams of solid waste a toilet can remove in a single flush. It is not part of a home inspection, but it is highly relevant when choosing a replacement toilet after an inspection defect. MaP Premium (1,000 grams) is the highest performance tier. TOTO Drake, Drake II, and UltraMax II all achieve MaP Premium scores.
Does a non-functioning exhaust fan fail inspection?
A non-functioning or absent exhaust fan in a bathroom without an openable exterior window is a material defect under most inspection standards and building codes. Even with a window present, many inspectors note a non-functional fan as a maintenance deficiency because of long-term humidity and mold risk. Replacing a fan costs $60 to $300 depending on whether ductwork changes are needed.
What is a pressure-balance valve and is its absence a defect?
A pressure-balance valve (ASSE 1016 standard) prevents sudden temperature spikes in the shower when a toilet is flushed or another fixture draws cold water. Homes built after 1993 in most jurisdictions require them. Inspectors flag absent anti-scald protection as a safety concern. Replacement requires a licensed plumber and costs $150 to $400 depending on access.
Can I do my own bathroom inspection using this checklist?
Yes. This checklist mirrors professional inspection protocols and is suitable for a pre-listing self-audit or a buyer's pre-offer walkthrough. However, a licensed home inspector uses calibrated electrical testers, moisture meters, and professional-grade assessment documentation. Self-inspections are a starting point, not a substitute for a licensed professional evaluation.
What brands make the most inspection-ready toilets?
TOTO, Kohler, American Standard, Woodbridge, Swiss Madison, and Gerber all manufacture toilets with robust warranty support and replacement parts availability. TOTO's Drake and UltraMax II lines are particularly noted for minimal maintenance callbacks in owner reviews aggregated across major retail platforms. Long-term parts availability matters because it affects how repairable a toilet is when an inspector flags a component issue.
How do I test my own GFCI outlets before an inspection?
Press the "Test" button on the GFCI outlet. The outlet should de-energize. Plug in a lamp or night light to confirm. Then press "Reset" to restore power. If the outlet does not trip when tested, or if pressing Reset does not restore power, the GFCI is faulty and must be replaced before the inspection. Cost: $15 to $25 for a new outlet, 20 minutes to install.
What is the most expensive bathroom defect found in inspections?
Subfloor rot around the toilet base or beneath the shower pan consistently generates the highest repair costs, ranging from $400 for a small localized area to $2,500 or more when rot has spread under adjacent tiles. Second most expensive is a failed shower pan requiring retiling and waterproof membrane replacement, often $1,500 to $3,000 depending on tile material and labor rates in the region.
Should buyers attend the home inspection?
Yes, whenever possible. Walking through the bathroom with the inspector while they explain each finding gives context that written reports cannot fully convey. Buyers who attend often understand which defects are genuinely concerning versus cosmetic, which directly affects the quality of their repair request negotiations.
Does bathroom tile grout condition affect the inspection outcome?
Cracked or missing grout in shower walls is noted as a defect when it represents an active water infiltration risk -- particularly on horizontal joints where water sits and on joints adjacent to the tub/wall seam. Hairline grout cracks in non-wet areas are typically flagged as maintenance items. Inspectors distinguish between cosmetic grout aging and structurally compromised grout that allows water behind the tile.
Sources
- EPA WaterSense, epa.gov/watersense
- MaP flush testing, map-testing.com
- American Society of Home Inspectors (ASHI) Standards of Practice, homeinspector.org
- InterNACHI Standards of Practice for Home Inspectors, nachi.org
- International Residential Code (IRC) bathroom ventilation requirements
- National Electrical Code (NEC) Article 210.8 -- GFCI protection requirements
- ASSE 1016 standard for pressure-balance valves
- HVI Home Ventilating Institute, hvi.org
- Manufacturer published specifications: TOTO, Kohler, American Standard, Woodbridge, Swiss Madison, Gerber
Our Verdict
A bathroom inspection examines roughly 40 to 60 checkpoints spanning plumbing, electrical safety, ventilation, moisture, and fixture function. The four highest-priority items inspectors and buyers should focus on are: toilet stability and wax ring integrity, GFCI protection at all outlets near water, functional exhaust ventilation vented to the exterior, and caulk/grout integrity at tub and shower seams. Addressing these before a listing or negotiating repair credits for them as a buyer will have the greatest impact on deal outcomes. For fixture replacement decisions prompted by an inspection, compare EPA WaterSense models with published MaP scores to ensure water efficiency does not compromise flushing performance.
How we rank & our data sources
We do not run physical lab tests. Rankings are built from published, verifiable data and real owner feedback, never paid placement.
- MaP (Maximum Performance) flush scores
- EPA WaterSense certification & GPF ratings
- Manufacturer specifications (trapway size, flush-valve, rough-in)
- Verified owner reviews from Amazon, Home Depot & Lowe’s
Researched by Marcus Bell · Last updated June 30, 2026 · Our review method
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