Toilet Installation Cost Calculator

Toilet installation costs $300–$2,900 total per toilet including the unit and labor. Standard 2-piece toilet costs $150–$400 for the unit plus $150–$400 labor. One-piece costs $200–$700 plus labor. Wall-hung costs $300–$900 plus $250–$500 labor (more complex). Smart/bidet toilet costs $500–$2,500 plus labor. Add $100–$250 for flange repair if needed, $10–$30 for wax ring/bolts, and $50–$150 for a new shut-off valve. Most homeowners spend $400–$800 for a standard replacement.

A straightforward toilet replacement takes 1–2 hours for a professional plumber. Breakdown: remove old toilet (15–30 min), inspect flange and floor (10 min), set new wax ring and toilet (20–30 min), connect water supply (10 min), test and caulk (15 min). Add 30–60 minutes if flange repair is needed. Wall-hung toilets take 4–8 hours due to in-wall carrier frame installation. Smart toilets add 30–60 minutes for electrical connection. Multiple toilet installations are typically discounted — 2 toilets take 3–4 hours total.

Yes, toilet replacement is one of the more DIY-friendly plumbing projects. Required tools: adjustable wrench, wax ring ($3–$5), supply line ($5–$10), closet bolts ($3–$5). Steps: shut off water, flush and sponge remaining water, disconnect supply, remove bolts, lift old toilet, scrape old wax, install new wax ring, set toilet, tighten bolts evenly, connect supply, test for leaks. DIY saves $150–$400 in labor. Don't DIY if: flange needs repair, floor is rotted, or you're installing a wall-hung toilet.

Toilets last 25–50 years but consider replacement if: constant running or leaking (repair costs add up), multiple flushes needed (older 3.5–5 gpf models), cracks in bowl or tank, wobbling (may indicate flange or floor damage), or frequent clogs. Pre-1994 toilets use 3.5–5 gallons per flush vs. modern 1.28 gpf — replacing saves $100–$200/year on water bills. WaterSense-certified toilets use 20% less water. Tax credits or utility rebates ($50–$100) may be available for water-efficient models.

Standard 2-piece toilets ($150–$400) offer the best value — reliable, widely available, easy to repair with common parts. Top picks: Toto Drake ($280–$350), American Standard Champion ($200–$300), Kohler Cimarron ($250–$350). One-piece toilets ($200–$700) are easier to clean (no gap between tank and bowl) and look sleeker. Wall-hung toilets ($300–$900) save floor space and make cleaning easier but cost more to install. Smart toilets ($500–$2,500) are worth it if you want bidet features, heated seat, and auto-flush.

Not always, but inspect the flange during replacement. Replace or repair ($100–$250) if: flange is cracked or broken, bolts won't tighten (slots are stripped), flange is below floor level (needs extender ring), or flange is corroded (cast iron in older homes). A flange repair kit ($10–$30) fixes minor slot damage. A new flange ($15–$50 for PVC) is needed if the old one is beyond repair. Flange should sit on top of finished floor, not below. Improper flange height causes leaks and rocking.

Two-piece toilet: separate tank and bowl bolted together. Pros: cheaper ($150–$400), lighter (easier to carry upstairs), tank replaceable separately if cracked, parts widely available. Cons: harder to clean around tank-bowl joint, slightly more leak-prone at connection. One-piece toilet: tank and bowl are fused. Pros: sleeker look, easier to clean, no tank-bowl gasket to leak, slightly lower profile. Cons: more expensive ($200–$700), heavier (60–100 lbs), must replace entire unit if cracked.

Replacing an old toilet (3.5–5 gpf) with a modern WaterSense toilet (1.28 gpf) saves 12,000–16,000 gallons per year for a family of 4. That's $100–$200/year on water bills depending on local rates. Dual-flush toilets save even more: 0.8 gpf for liquid, 1.28 gpf for solid waste. Over a 25-year toilet lifespan, that's $2,500–$5,000 in water savings — often exceeding the cost of the toilet and installation. Many water utilities offer $50–$100 rebates for WaterSense-certified toilet purchases.