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Undermount Bathroom Sinks

Showing 1 - 24

Enhance the sleek and seamless look of your bathroom with our collection of Undermount Bathroom Sinks at The Sink Boutique. Designed for a clean and modern aesthetic, these sinks are installed beneath the countertop for a smooth, integrated appearance. Choose from a range of shapes, sizes, and materials to complement your bathroom's style. Undermount sinks not only provide a polished finish but also make cleaning a breeze.

Elevate your bathroom design with the understated elegance of our Undermount Bathroom Sinks collection.

Alternate Image for Native Trails Trough 48" Rectangle Copper Bathroom Sink, Polished Copper, CPS408

Alternate Image for Native Trails Trough 48" Rectangle Copper Bathroom Sink, Polished Copper, CPS408

Native Trails Trough 48" Rectangle Copper Bathroom Sink, Polished Copper, CPS408

$2,741.25 $3,655.00

In stock, ready to ship

Alternate Image for Ruvati Krona 19" Rectangle Undermount Porcelain Bathroom Vanity Sink with Overflow, White, RVB0718

Alternate Image for Ruvati Krona 19" Rectangle Undermount Porcelain Bathroom Vanity Sink with Overflow, White, RVB0718

Ruvati Krona 19" Rectangle Undermount Porcelain Bathroom Vanity Sink with Overflow, White, RVB0718

$149.00 $186.25

In stock, ships in 1–2 days

Alternate Image for Native Trails Trough 48" Rectangle Nickel Bathroom Sink, Brushed Nickel, CPS508

Alternate Image for Native Trails Trough 48" Rectangle Nickel Bathroom Sink, Brushed Nickel, CPS508

Native Trails Trough 48" Rectangle Nickel Bathroom Sink, Brushed Nickel, CPS508

$3,472.50 $4,630.00

Low stock, ready to ship

Native Trails Nipomo 20" Rectangle NativeStone Concrete Farmhouse Bathroom Sink, Ash, NSL1915-A

Native Trails Nipomo 20" Rectangle NativeStone Concrete Farmhouse Bathroom Sink, Ash, NSL1915-A

Native Trails Nipomo 20" Rectangle NativeStone Concrete Farmhouse Bathroom Sink, Ash, NSL1915-A

$634.50 $846.00

In stock, ready to ship

Alternate Image for TOTO 20" Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT1535G#01

Alternate Image for TOTO 20" Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT1535G#01

TOTO 20" Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT1535G#01

$340.00

In stock, ready to ship

Sale

Alternate Image for Nantucket Sinks Brightwork Home 20" Brass Bathroom Sink, TRB-OF

Alternate Image for Nantucket Sinks Brightwork Home 20" Brass Bathroom Sink, TRB-OF

Nantucket Sinks Brightwork Home 20" Brass Bathroom Sink, TRB-OF

$974.99 $1,299.99

Low stock, ships in 1–2 days

Best seller

Alternate Image for TOTO Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT191G#01

Alternate Image for TOTO Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT191G#01

TOTO Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT191G#01

$470.00 $553.00

In stock, ready to ship

Best seller

Alternate Image for Ruvati Ariaso 18" Rectangle Undermount Stainless Steel Bathroom Sink, Gunmetal Matte Black, 16 Gauge, RVH6107BL

Alternate Image for Ruvati Ariaso 18" Rectangle Undermount Stainless Steel Bathroom Sink, Gunmetal Matte Black, 16 Gauge, RVH6107BL

Ruvati Ariaso 18" Rectangle Undermount Stainless Steel Bathroom Sink, Gunmetal Matte Black, 16 Gauge, RVH6107BL

$299.00 $373.75

In stock, ships in 1–2 days

TOTO 19" x 12-3/8" Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT542G#01

TOTO 19" x 12-3/8" Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT542G#01

TOTO 19" x 12-3/8" Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT542G#01

$340.00

In stock, ready to ship

Alternate Image for Native Trails Trough 30" Rectangle Copper Bathroom Sink, Antique Copper, CPS200

Alternate Image for Native Trails Trough 30" Rectangle Copper Bathroom Sink, Antique Copper, CPS200

Native Trails Trough 30" Rectangle Copper Bathroom Sink, Antique Copper, CPS200

$1,827.00 $2,436.00

Low stock, ready to ship

Best seller

Alternate Image for Eago 22" x 15" Rectangle Under Mount Porcelain Bathroom Sink, White, No Faucet Hole, BC227

Alternate Image for Eago 22" x 15" Rectangle Under Mount Porcelain Bathroom Sink, White, No Faucet Hole, BC227

Eago 22" x 15" Rectangle Under Mount Porcelain Bathroom Sink, White, No Faucet Hole, BC227

$160.00 $175.00

In stock, ready to ship

TOTO 21-1/4" x 14-3/8" Large Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT540G#01

TOTO 21-1/4" x 14-3/8" Large Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT540G#01

TOTO 21-1/4" x 14-3/8" Large Rectangular Undermount Bathroom Sink with CEFIONTECT, Cotton White, Vitreous China, LT540G#01

$360.00

In stock, ready to ship

Alternate Image for Nantucket Sinks Great Point 20" Ceramic Bathroom Sink, White, UM-18x13-W

Alternate Image for Nantucket Sinks Great Point 20" Ceramic Bathroom Sink, White, UM-18x13-W

Nantucket Sinks Great Point 20" Ceramic Bathroom Sink, White, UM-18x13-W

$189.00

In stock, ships in 1–2 days

Alternate Image for Karran Cinox 15.75" x 23.625" Rectangular Undermount Stainless Steel Bathroom Sink, Gunmetal Grey, 16 Gauge, CCU400GG

Alternate Image for Karran Cinox 15.75" x 23.625" Rectangular Undermount Stainless Steel Bathroom Sink, Gunmetal Grey, 16 Gauge, CCU400GG

Karran Cinox 15.75" x 23.625" Rectangular Undermount Stainless Steel Bathroom Sink, Gunmetal Grey, 16 Gauge, CCU400GG

$329.95

In stock, ships in 1 day

Best seller

Alternate Image for Nantucket Sinks Great Point 17" Rectangle Undermount Ceramic - Vitreous China Bathroom Sink, White, UM-159-W

Alternate Image for Nantucket Sinks Great Point 17" Rectangle Undermount Ceramic - Vitreous China Bathroom Sink, White, UM-159-W

Nantucket Sinks Great Point 17" Rectangle Undermount Ceramic - Vitreous China Bathroom Sink, White, UM-159-W

$193.00

In stock, ships in 1–2 days

Sale

Alternate Image for Nantucket Sinks Brightwork Home 48" x 14" x 6" Rectangle Undermount Stainless Steel Bathroom Sink, 18 Gauge, TRS48-OF

Alternate Image for Nantucket Sinks Brightwork Home 48" x 14" x 6" Rectangle Undermount Stainless Steel Bathroom Sink, 18 Gauge, TRS48-OF

Nantucket Sinks Brightwork Home 48" x 14" x 6" Rectangle Undermount Stainless Steel Bathroom Sink, 18 Gauge, TRS48-OF

$1,649.99 $2,199.99

In stock, ships in 1–2 days

Alternate Image for Premier Copper Products 19" Rectangle Copper Bathroom Sink, Oil Rubbed Bronze, LREC19DB

Alternate Image for Premier Copper Products 19" Rectangle Copper Bathroom Sink, Oil Rubbed Bronze, LREC19DB

Premier Copper Products 19" Rectangle Copper Bathroom Sink, Oil Rubbed Bronze, LREC19DB

$283.00 $404.00

In stock, ready to ship

Alternate Image for Ruvati Krona 21" Rectangle Undermount Porcelain Bathroom Sink with Overflow, White, RVB0720

Alternate Image for Ruvati Krona 21" Rectangle Undermount Porcelain Bathroom Sink with Overflow, White, RVB0720

Ruvati Krona 21" Rectangle Undermount Porcelain Bathroom Sink with Overflow, White, RVB0720

$159.00 $198.75

In stock, ships in 1–2 days

Alternate Image for Native Trails Trough 48" Rectangle Nickel Bathroom Sink, Polished Nickel, CPS808

Alternate Image for Native Trails Trough 48" Rectangle Nickel Bathroom Sink, Polished Nickel, CPS808

Native Trails Trough 48" Rectangle Nickel Bathroom Sink, Polished Nickel, CPS808

$3,835.50 $5,114.00

Low stock, ready to ship

Alternate Image for Native Trails Trough 36" Rectangle Copper Bathroom Sink, Antique Copper, CPS206

Alternate Image for Native Trails Trough 36" Rectangle Copper Bathroom Sink, Antique Copper, CPS206

Native Trails Trough 36" Rectangle Copper Bathroom Sink, Antique Copper, CPS206

$2,070.75 $2,761.00

Low stock, ready to ship

Alternate Image for Nantucket Sinks Great Point 18" Ceramic Bathroom Sink, Bisque, UM-16x11-B

Alternate Image for Nantucket Sinks Great Point 18" Ceramic Bathroom Sink, Bisque, UM-16x11-B

Nantucket Sinks Great Point 18" Ceramic Bathroom Sink, Bisque, UM-16x11-B

$189.00

In stock, ships in 1–2 days

Alternate Image for Ruvati Cresta 20 x 14 inch Brushed Stainless Steel Undermount Ramp Bathroom Sink Stainless Steel, 16, RVH6140ST

Alternate Image for Ruvati Cresta 20 x 14 inch Brushed Stainless Steel Undermount Ramp Bathroom Sink Stainless Steel, 16, RVH6140ST

Ruvati Cresta 20 x 14 inch Brushed Stainless Steel Undermount Ramp Bathroom Sink Stainless Steel, 16, RVH6140ST

$349.00 $436.25

In stock, ships in 1–2 days

Alternate Image for Native Trails Nipomo 20" Rectangle NativeStone Concrete Farmhouse Bathroom Sink, Pearl, NSL1915-P

Alternate Image for Native Trails Nipomo 20" Rectangle NativeStone Concrete Farmhouse Bathroom Sink, Pearl, NSL1915-P

Native Trails Nipomo 20" Rectangle NativeStone Concrete Farmhouse Bathroom Sink, Pearl, NSL1915-P

$711.75 $949.00

In stock, ready to ship

Alternate Image for Native Trails Amara 20" x 14" Rectangle Fireclay Bathroom Sink, Gunmetal, PML2014-M

Alternate Image for Native Trails Amara 20" x 14" Rectangle Fireclay Bathroom Sink, Gunmetal, PML2014-M

Native Trails Amara 20" x 14" Rectangle Fireclay Bathroom Sink, Gunmetal, PML2014-M

$1,483.50 $1,978.00

In stock, ready to ship

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Return Policy

At The Sink Boutique, your satisfaction is our priority. We stand behind every product we sell and are here to ensure you're satisfied with your purchase.

What we promise:

Free replacements for damaged or incorrect items upon delivery
30-day return window for peace of mind with fair terms and fees
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Start here: Visit our Contact Us page and use our message form. Include your order number and photos if applicable. We’ll respond within 1 business day with the next steps.

Quick Links

Arrived Damaged or Wrong Item?
Missing Items?
Need to Cancel Your Order?
Product isn't quite Right for your space?
Exchanges
Important Details

Common Situations & Solutions

Arrived Damaged or Wrong Item?

We'll make it right at no cost to you:

Contact us within 48 hours of delivery. Report the damage here.
We'll arrange a free replacement immediately
Follow our Delivery Inspection Guidelines for the fastest resolution

Missing Items?

We'll investigate right away.

Report within 24 hours of delivery confirmation
We'll track down your missing item immediately

Need to Cancel Your Order?

We move fast, so call us ASAP. We work with multiple manufacturers who often process orders immediately.

Best option: Call (844) 470-1212 (Mon–Fri, 9–5 PM EST)
Email cancellation requests aren't guaranteed unless we confirm
In-stock items often move to shipping immediately, even after hours
Once manufacturers begin processing, cancellation becomes a standard return

Product Isn't Quite Right for Your Space?

We understand – finding the perfect fit can be tricky. Eligible items can be returned within 30 days. Here's how it works:

To qualify:

The item must be unused, uninstalled, and in original packaging
Return authorization is required (we'll provide clear instructions)
Return must be trackable and insured

Return fees apply:

Return shipping is the customer’s responsibility (varies by location and item size)
Manufacturer restocking fee (up to 25%) - this is an industry-standard fee charged by manufacturers, not The Sink Boutique, to cover the specialized handling these products require.

We'll confirm exact costs when you request your return authorization.

Exchanges

Exchanges are handled as a return + new purchase.
Simply return the original product (as above) and place a new order.

Important Details

Final Sale Items

Items marked "Final Sale" cannot be returned or exchanged per manufacturer policy, but we'll still replace them free if they arrive damaged.

Natural Variations

Our handcrafted sinks may have minor variations that make each piece unique. Small bubbles, dimples, or surface irregularities on unfinished undersides are normal characteristics of the artisan process and don't affect functionality.

Questions about your specific item? Contact us – we're happy to review it with you.

Color Matching

Colors may appear different due to monitor settings and natural material variations. Please review our Color Disclaimer before ordering.