48 Inch Bathroom Vanities

Maximum Single-Sink Width for Your Bathroom

The 48-inch bathroom vanity is the top of the single-sink range, and it gives you more usable counter space than any other single-basin configuration available. At four feet wide, you get generous countertop on both sides of the sink for spreading out your morning routine, plus a deep storage layout underneath with multiple drawers and cabinet doors that hold everything from hair tools and toiletries to extra towels and cleaning supplies. If you want the function of a wide vanity but only need one sink, this is the size that delivers the best of both worlds.

Who Should Choose 48 Inches

This width works especially well in master bathrooms where only one person uses the sink, in large guest baths where you want the vanity to fill the wall proportionally, and in renovations where the existing plumbing supports a single drain but you have wall space for a wider cabinet. You also see 48-inch vanities in couples' bathrooms where one person prefers a separate makeup station or wall-mounted mirror rather than a second sink. The wide countertop gives that person their own workspace without requiring double plumbing.

Some 48-inch models also come in offset double-sink configurations, where two smaller basins are placed closer together than a standard 60-inch double-sink layout. This gives two people their own sink while staying within the compact footprint of a four-foot cabinet. Check individual product specs to see which basin configurations are available at this width.

Construction and Countertop Details

Our 48-inch vanities feature solid birch or oak frames with marine-grade plywood panels built to handle years of bathroom humidity. Countertop options include Carrara marble, White Carrara quartz, and select granite, each pre-fitted with undermount sinks and pre-drilled faucet holes. Soft-close doors and drawers are standard, along with dovetail drawer construction that keeps everything tracking smoothly under daily use. If you need a wider double-sink setup, our 60 inch double sink vanities are the natural next step up. For a narrower single-sink option, our 42 inch bathroom vanities offer a slightly more compact footprint, and the ever-popular 36 inch bathroom vanity remains the most common single-sink width of all. Compare all widths in our bathroom vanities by size collection to find the right match for your bathroom layout and daily routine.