Toilet Installation Cost: Replacement, Flange, and Rough-In

Toilet installation is a flat-rate task when it is a clean swap onto a good flange, and a variable job the moment there is a rocking toilet, a rotted floor, or a corroded flange underneath.

What does toilet installation cost?

A standard replacement with the customer's toilet on a sound flange runs $130 to $300 in labor. Supplying a mid-grade toilet plus install runs $300 to $600. Add $150 to $400 for a flange repair or replacement, and more if subfloor around the flange has to be cut out and rebuilt.

What turns a swap into a bigger job?

• A broken or below-tile flange needing a repair ring or full replacement
• Soft or water-damaged subfloor around the closet flange
• Corroded closet bolts or a rusted supply stop that must be replaced
• A cast-iron drain where the flange is part of the pipe
• Moving the rough-in for a different toilet footprint — a real drain-line job

How should you quote it?

Quote the swap as a flat rate with the flange and stop assumed good, and list unit prices for flange replacement and shutoff valve replacement so the on-site adjustment is transparent. Customers accept a $200 add-on they were warned about; they dispute a surprise.

What should the estimate mention about the old toilet?

Haul-away and disposal, wax ring and hardware included, a 24-hour leak check recommendation, and that any pre-existing floor damage revealed when the old toilet comes up is documented with photos and quoted separately.