Double Vanity Installation in Columbus, Ohio

Transit & Flow Group installs double-sink vanities for Columbus and Central Ohio homeowners converting a single-sink bathroom to two sinks, or replacing an existing double vanity, as part of a broader bathroom project. This Bathroom Services page is scoped for the plumbing and electrical work that a double vanity genuinely requires: two sets of supply lines, a drain configuration that serves both basins, and potentially two GFCI-protected outlets for two sets of grooming appliances. If your project is a simpler single-sink swap into plumbing that already exists, our Appliance and Fixture Installation division’s Bathroom Vanity Installation and Customer-Supplied Vanity Installation pages are the faster, narrower, install-only options. Describe your bathroom and your vanity plans in the Estimate Builder for a preliminary online estimate.

Is this the right service for you?

Double Vanity Installation fits homeowners in one of these situations:

• Converting an existing single-sink vanity to a double-sink vanity, which almost always means adding a second full set of supply and drain connections where only one existed before
• Replacing an existing double vanity with a new one, where sink spacing, drain locations, or electrical outlet positions are shifting even slightly
• Adding a second GFCI-protected outlet to serve two sinks, since most single-vanity bathrooms were wired for one outlet, not two
• Doing the vanity as one piece of a larger bathroom project, alongside a new vanity top, flooring, or lighting, where the plumbing and electrical work needs to be sequenced with everything else

If your situation is simpler than this, a single-sink vanity going into the same footprint using the plumbing already there, our Appliance and Fixture Installation division has two pages built specifically for that: Bathroom Vanity Installation, for a standard single-sink drop-in swap, and Customer-Supplied Vanity Installation, for an oversized, floating, or relocated single-sink unit. Both of those pages are narrower, install-only labor for a vanity you have already purchased, with no other bathroom work happening. This page exists because going to two sinks changes the plumbing and electrical scope in a way that a single-fixture install does not, and it is priced to reflect that.

How pricing works

Double Vanity Installation is scope-based pricing built around what the room needs to support two sinks:

• Plumbing for two basins. A second set of supply lines and a drain configuration that serves both sinks, whether that means splitting an existing drain or running a new branch, is the core driver of this scope.
• Electrical. Many single-vanity bathrooms have one outlet positioned for one sink; a double vanity often needs a second GFCI-protected outlet added or relocated to serve the second basin safely.
• Vanity size and mounting. A wider double vanity may need different cabinet support or blocking than the single-sink unit it replaces.
• Coordination with other work. If the vanity is part of a broader bathroom project, flooring, lighting, or a new vanity top, the plumbing and electrical steps are sequenced with that work rather than priced in isolation.
• What changes the price on site: older cast iron drain stacks that complicate splitting a single drain into two, wall cavities that need opening to add electrical, or a vanity top requiring its own sink cutout templating.

As general market context, not a Transit & Flow Group quote, Forbes Home’s 2025 cost guide lists installation labor for larger, double-sink vanities at roughly $500 to $1,200, with plumbing and electrical work adding further to that range depending on complexity. Starting at $299.

Enter your project details and photos in the Estimate Builder for a preliminary online estimate. Final scope and price subject to verification on site.

What’s included

• Removal and disposal of the existing single or double vanity, cabinet, and sinks
• A second set of supply lines and a drain configuration serving both sinks
• Assessment and, where needed, addition of a second GFCI-protected outlet for the double-sink setup
• Setting, leveling, and securing the new double vanity
• Faucet connections for both sinks
• Cleanup and haul-away of packaging and old fixtures
• All workmanship is backed by a 1-year labor warranty on labor, parts, and equipment covered per manufacturer terms.

What’s not included

• The vanity, sinks, countertop, or faucets themselves; you supply the units
• A standard single-sink, same-footprint swap using plumbing already in place (see Bathroom Vanity Installation or Customer-Supplied Vanity Installation, Appliance and Fixture Installation division)
• Vanity top fabrication or material selection (see our Vanity Top Replacement page)
• Structural wall modifications beyond blocking and electrical work needed for the double vanity
• Wall or floor finish repair beyond the immediate installation area, priced separately if needed

Central Ohio context

A lot of Central Ohio’s older housing stock, in neighborhoods like Clintonville, Bexley, and German Village, was built with a single-sink bathroom as the standard, one supply line pair, one drain, one outlet. Converting that setup to a double vanity means genuinely adding capacity, not just reconnecting what is already there, and older plaster-and-lath walls or cast iron drain stacks can make that work slower than in a newer home. In Dublin, New Albany, and Lewis Center, primary bathrooms built in the last two decades more often already have rough-in for two sinks even if only one vanity is currently installed, which can make a double vanity upgrade in those homes noticeably more predictable.

Our process

1. Describe your bathroom and vanity plans in the Estimate Builder. Current setup, target vanity dimensions and sink count, and photos, for a preliminary online estimate.
2. Book online or call (614) 382-0000.
3. On-site verification. We confirm what the plumbing and electrical actually need to become a double-sink setup. Final scope and price subject to verification here.
4. Installation. Plumbing and electrical work first, then the vanity is set, leveled, and connected.
5. Final check. Water run at both sinks, outlets tested, connections checked for leaks, and cleanup before we leave.

Services completed by appropriately qualified professionals where required.

Related services

Bathroom Vanity Installation (Appliance and Fixture Installation) | Customer-Supplied Vanity Installation (Appliance and Fixture Installation) | Vanity Top Replacement

Not sure which vanity service fits your project? Send photos of your current bathroom through the Estimate Builder and we will point you to the right page, or call Transit & Flow at (614) 382-0000.