DIY or hire · Decision
Should you replace your own toilet?
By Ken Hoven · Updated April 2026
Our verdict
DIY recommended
Mechanical, low-risk, well-documented. Typical DIY savings: $150–$300.
- Risk
- Low risk
- Permit
- Usually not required
- Time
- 2 hr (DIY)
- Savings
- ~$160
The reasoning
Replacing a toilet is the kind of repair homeowners consistently overpay for. The connection points are simple — a water supply line and two bolts anchoring the toilet to a flange — and the consequence of a small leak is a noticeable puddle, not a flooded home. The hardest part is usually carrying the toilet, not installing it. If the flange and the floor around it are in good shape, this is a 90-minute DIY job with a $30 trip to the hardware store. The cases where you should hire a pro: the flange is rotted, the floor is soft, or you're moving the drain location.
Honest cost comparison
| DIY | Hired | |
|---|---|---|
| Typical cost | $140–$400 | $300–$600 |
| What's included | Toilet + wax ring + supply line + shims | Typically includes removal and disposal of the old unit |
If you DIY
Pick up a toilet (most basic models are $120–$200), a wax ring, a new supply line, and a small bucket to catch residual water in the tank. Turn off the supply valve, flush to empty, disconnect the supply line, remove the tank, and unbolt the base. The wax ring will likely be stuck — a putty knife scrapes it off. Set the new wax ring on the flange, lower the new toilet straight down, tighten the bolts evenly (snug, not Hulk-tight — you can crack porcelain), reconnect the supply line, turn the water back on, and check for leaks.
Tools needed
- adjustable wrench
- putty knife
- bucket
- utility knife
- level
If you hire it out
A plumber quote in the $300–$600 range is fair for like-for-like replacement. If the quote goes over $700 without a specific reason (rotted flange, subfloor damage), get another quote. Don't pay extra for a 'haul-away fee' on a standard toilet — most plumbers include it or charge nominal ($25–$50). If the plumber recommends replacing the shutoff valve and it's more than 10 years old, that's reasonable — add $40–$80.
Permit & code
Not typically required for like-for-like toilet replacement.
Frequently asked
- Do I need to replace the wax ring?
- Yes, always. Wax rings are single-use — once compressed they won't reseal. A new one costs $3–$8.
- Can I reuse the toilet flange?
- If it's not cracked and sits at the right height (level with or slightly above the finished floor), yes. If it's rotted plastic or the bolts are stripped, replace the flange — that's a bigger job.
- Does the new toilet need to be the same rough-in?
- Yes — measure from the finished wall to the center of the closet bolts. Most homes are 12 inches; 10 and 14 exist in older homes. Buying the wrong rough-in is the most common DIY mistake on this job.
- How do I know if the floor is damaged?
- Push gently on the floor around the base. Spongy or flexing = subfloor damage from a prior leak. That's a stop-and-call-a-pro moment.
Related
The Home Repair Cost Calendar
One task list for every month of the year — with real 2026 cost ranges for each. Free PDF, no email required. Or subscribe for seasonal reminders when the next month's tasks come due.
One email a week. Seasonal reminders + one contractor-vetting tip. No spam. Unsubscribe anytime.