Choosing between a single sink vs double sink vanity is one of the most practical decisions you'll make during a bathroom remodel. Get it right and your bathroom works smoothly every morning. Get it wrong and you're either cramped or wasting square footage you could have used better. This guide breaks down the real differences — space requirements, cost, storage, and daily habits — so you can make a confident choice before you buy.
Understanding What Each Vanity Type Actually Offers
A single sink vanity has one basin centered or offset on the cabinet. Widths typically range from 24 to 60 inches, making these fixtures flexible enough for powder rooms, guest baths, and smaller primary bathrooms alike.
A double sink vanity — also called a double vanity — features two basins set side by side, usually on cabinets starting at 60 inches wide and stretching to 84 inches or more. The extra width is the defining factor that shapes everything else about the decision.
Browse both options directly: Single Sink Vanity and Double Sink Vanity collections at VanityArt.
Space Requirements: Measuring Before You Decide
Floor space is the first filter. Before falling for any style, measure your bathroom carefully.
- Single sink vanity: Fits comfortably in bathrooms as narrow as 5 feet wide. A 36- or 48-inch cabinet leaves room for a toilet, storage, and easy movement.
- Double sink vanity: Needs a bathroom that is at least 8 feet wide — ideally more — to avoid a cramped layout. You also need to account for plumbing rough-in on both ends of the cabinet.
- The National Kitchen and Bath Association recommends at least 30 inches of clear floor space in front of any vanity. Double that length for a double vanity and confirm it fits your floor plan.
- If your bathroom is under 80 square feet, a double vanity will almost always dominate the room in a way that feels uncomfortable.
If space is tight, a floating vanity can visually open the room regardless of sink count, since the exposed floor underneath reads as extra square footage.
Cost Comparison: Purchase Price and Installation
Double vanities cost more at every stage of the project. Here is a realistic breakdown:
- Cabinet and sink price: A quality single sink vanity often runs $400–$1,200. A comparable double vanity starts around $700 and can exceed $2,500 for larger or premium units.
- Plumbing labor: Two sinks mean two drain lines, two supply lines, and potentially two faucets. Plumbers typically charge per fixture, so expect labor costs to roughly double the sink-related portion of the bill.
- Faucets: You will need two faucets for a double vanity. Even mid-range faucets add $150–$400 to the budget when purchased as a pair.
- Countertop and mirror: A longer countertop costs more material, and you will likely need either one wide mirror or two separate mirrors to balance the look.
If budget is a primary concern, a well-chosen single sink vanity from the Vanities collection delivers strong value without the added plumbing expense.
Single Sink vs Double Sink Vanity: Storage and Counter Space
Counter space and storage work differently depending on configuration.
- A single sink vanity concentrates counter space on one side, which suits one person well but can feel tight when two people share it simultaneously.
- A double vanity divides counter space between two users, but the total surface area is larger. Each person essentially has their own zone.
- Storage is often comparable per linear foot of cabinet. However, a wider double vanity naturally provides more total drawer and door storage, which helps households with a lot of toiletries and grooming products.
- Some homeowners compensate for a single sink's smaller counter by adding a freestanding cabinet or a tall linen cabinet nearby.
Lifestyle and Household Size: The Deciding Factor
More than square footage or budget, your household's daily routine often determines which option makes the most sense.
Single sink vanity works well when:
- Only one person uses the bathroom regularly, or the bathroom is a guest or secondary bath.
- Users have staggered morning schedules and rarely need to be at the sink at the same time.
- The bathroom serves a single child or a small guest room.
- You want to keep the overall bathroom remodel budget lower without sacrificing quality.
Double sink vanity makes more sense when:
- Two adults share the primary bathroom and have overlapping morning routines.
- You have children of similar ages who need to brush teeth and get ready simultaneously.
- You are remodeling a master bathroom and plan to stay in the home long-term — a double vanity adds resale appeal.
- You have the floor space to support a 60-inch or wider cabinet without it overwhelming the room.
Style and Design Flexibility
Both configurations come in a wide range of styles, finishes, and sink types. Your design preferences do not have to be limited by the sink count.
- Vessel sinks add a sculptural quality that works well on both single and double vanities. See the Vessel Sink Vanity collection for options.
- Undermount sinks keep counter lines clean and are easy to wipe down. The Undermount Sink Vanity collection offers many sizes.
- Mirrors make a significant visual difference. A single large mirror above a double vanity creates a cohesive look; two individual mirrors give each user a defined space. Explore Mirrors and LED Mirrors to finish the look.
- Floating designs work for both sink counts and are especially useful in smaller bathrooms where visual lightness matters.
Resale Value Considerations
If you are remodeling with resale in mind, a double vanity in the primary bathroom is generally viewed favorably by buyers. Real estate professionals consistently note that a well-appointed master bath — one with dual sinks, good storage, and a quality finish — can positively influence a home's perceived value and time on market.
That said, a double vanity installed in a bathroom that is clearly too small for it can have the opposite effect. Proportion matters. A single sink vanity that fits the room correctly will always look better than an oversized double vanity that crowds the space.
If you want to see what is currently popular with other buyers, the Best Selling collection reflects real purchase trends and is a practical starting point for any remodel.
Quick Decision Checklist
Use this checklist before making a final decision:
- Is your bathroom wall at least 72 inches wide where the vanity will go? If not, start with single sink options.
- Do two or more people share this bathroom daily? If yes, a double vanity is worth the extra investment.
- Is your total bathroom remodel budget under $3,000? A quality single sink vanity stretches that budget further.
- Are you planning to sell the home within five years? A double vanity in the primary bath often appeals to buyers.
- Do you want a streamlined, minimal look? A single sink vanity with a clean countertop is easier to style and maintain.
Frequently Asked Questions
What is the minimum bathroom size for a double sink vanity?
Most designers recommend at least 8 feet of wall width and a bathroom of 80 square feet or more before installing a double sink vanity. You need enough clear floor space in front of the cabinet — at least 30 inches — plus room for the toilet and any other fixtures without the layout feeling cramped.
Can I convert a single sink vanity to a double sink later?
Not directly. Single sink vanities are built around one sink cutout and one set of plumbing rough-ins. Converting requires replacing the entire vanity and cabinet, rerouting plumbing, and potentially moving the drain location in the floor or wall. It is almost always more cost-effective to choose the right configuration upfront than to retrofit later.
Do double sink vanities always cost twice as much as single sink vanities?
Not necessarily twice as much, but they do cost significantly more in total. The cabinet and countertop price is higher due to size, and plumbing labor increases because you are adding a second sink, drain, and supply line. Budget roughly 40–70% more for the full installed cost of a double vanity compared to a comparable single sink setup.
Whether you land on a single or double configuration, the right vanity is the one that fits your space, suits your routine, and holds up over time. Browse the full Vanities collection at VanityArt to find the right size, style, and finish for your bathroom.