---
title: "Bathroom Undermount Sink — $91K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/bathroom-undermount-sink"
last_updated: "2026-08-08T18:17:50.960Z"
locale: en
meta:
description: "Niche score 44/100 · $91K/yr market · 99K searches/yr · $80.89 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $91K/yr market · 99K searches/yr · $80.89 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Bathroom Undermount Sink — $91K/yr Amazon US Niche (2026) - Flapen"
---
# **bathroom undermount sink**
**Skip it**
Weak search conversion (1.1%) — this niche doesn't clear our bar today.
Market size 23Growth 19Conversion 14Competition 88Returns 16Price range 26Avg price 82Brand share 90Review moat 90Quality gap 28
**Brand share**
**Great****45%**
top-5 brand share — no brand owns this niche
**Review moat**
**Great****194.77**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Great****27%**
top-5 click share — an open shelf
**Avg price**
**Great****$80.89**
avg listing price — sweet spot $15–$100
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****$48.22–$249.28**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Bad****$91K**
$91K/yr · 99K searches
**Growth**
**Bad****-13.0%**
90-day search growth — must beat 0% to launch
**Returns**
**Bad****7.4%**
return rate — above 5% kills the launch gate
**Conversion**
**Bad****1.1%**
search→purchase rate — share of searches ending in a sale
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, bathroom undermount sink is a $91K/yr Amazon United States market (99K searches/yr). The top 5 brands hold 45% of demand. Verdict: Skip it — 44/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **bathroom undermount sink market data**
- **Units sold / yr**
- **2K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$121K–$162K**
- units × avg price
- **Conversion rate**
- **1.1%**
- **Avg BSR**
- **#93**
- **Page quality**
- **0%**
- **Prime**
- **88%**
- **Sponsored**
- **95%**
- **Out of stock**
- **3.1%**
- **Avg brand age**
- **60 months**
- **Avg seller age**
- **174 days**
## **Competition & brand share**
Clicks spread well past the top 5 (27% combined) — an open shelf where new products get seen.
**Brands**
**39 **▼falling
**Sellers**
**86**
**Top-5 brand share**
**45%**
Top 20: 88%
**Top-5 click share**
**27%**
Top 20: 61%
**Open market**
**49%**
- DeerValley14% - Hugsleek10% - HOROW8% - Kohler8% - Lordear6% - Couoko6%
## **Demand & seasonality**
Weekly Amazon search volume, last 102 weeks — -13.0% search growth over the last 90 days.
3K2KSpike '25Prime Day '25 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/bathroom-undermount-sink/trend)
## **Top bathroom undermount sink search terms**
- **undermount bathroom sinks**11K/yr+10.6%0.8% conv. - **bathroom sink undermount**18K/yr-14.2%0.8% conv. - **glass vessel sink**9K/yr+22.7%0.2% conv. - **semi recessed bathroom sink**9K/yr-17.4%0.9% conv. - **bathroom undermount sink**7K/yr-11.7%1.5% conv. - **oval vessel sink**8K/yr-14.1%0.3% conv. - **round bathroom sink**7K/yr-11.7%0.4% conv. - **undermount bathroom sink rectangle**7K/yr-19.7%1.2% conv. - **undermount vanity sink**5K/yr-14.9%0.9% conv. - **round sink bowl**4K/yr-17.3%0.2% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/bathroom-undermount-sink/search-terms)
## **Top bathroom undermount sink products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%3%$3K6%$5K9%$8K12%$11K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**DeerValley Undermount Bathroom Sink White Rectangle 21x15 Overflow Basin**DeerValley**$60.84**4.6★338 rev](https://www.amazon.com/dp/B08R9H8HRH) [2**HOROW Undermount Bathroom Sink 20x15 Inch Rectangle Bathroom Sink with Deep Basin Anti-Splash Design Overflow Small Vanity Sink for Half and Full Bathroom**HOROW**$57.60**4.4★108 rev](https://www.amazon.com/dp/B0D1R126VR) [3**Undermount Bathroom Sink Rectangle Hugsleek Interior Bowl Size 18 x 13 inch White Porcelain Ceramic Vessel Sink Under Counter Exterior Size 20x15in Rectangular Bath Sink Basin Lavatory Fireclay**Hugsleek**$67.89**4.8★149 rev](https://www.amazon.com/dp/B0CLK5NYR4) [4**KOHLER 20000-0 Caxton Rectangle Undermount Bathroom Sink Bathroom Vanity Sink with Overflow Drain 20-1/4 L x 15-11/16 W White**Kohler**$103.61**4.3★544 rev](https://www.amazon.com/dp/B00VG0PGKW) [5**Undermount Bathroom Sink Rectangle Hugsleek Interior Bowl Size 16 x 11 inch White Porcelain Ceramic Vessel Sink Under Counter Exterior Size 18x13in Rectangular Bath Sink Basin Lavatory Fireclay**Hugsleek**$64.00**4.8★149 rev](https://www.amazon.com/dp/B0D5XJQ9LH)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Lordear Vessel Sink Rectangle 19 Inch Bathroom Sinks 19x12 Inch Semi Recessed Sink 5 Deep Rectangular White Ceramic Modern Vanity Sink Bath Wash Above Counter Basin**Lordear**$85.25**16 rev10mo ago](https://www.amazon.com/dp/B0FQJ4F92V) [**18in Undermount Bathroom Sink Rectangular 18.1 x 13.8 Vessel Sink Rectrangle Undermount Bathroom Sink White Ceramic Lavatory Vanity Vessel Sink with Overflow**kjineaten**$83.83**53 rev1y ago](https://www.amazon.com/dp/B0F4YFQDSF) [**Bathroom Semi Recessed Sink Eridanus 21 x 13 Semi-Recessed Bathroom Sink Rectangular White Durable Ceramic Vessel Sinks for Bathroom Modern Sink Vanity Sink Space-Saving**Eridanus**$71.32**200 rev1y ago](https://www.amazon.com/dp/B0DS1V7F8J) [**18W x 13D Undermount Bathroom Sink Los Flexi Compact Rectangular 18 Inch Ceramic Undermount Lavatory Sinks for Small Bathrooms White Undercounter Vanity Sinks with Overflow**Los Flexi**$58.75**27 rev1y ago](https://www.amazon.com/dp/B0DPYVXKL9) [**Lordear Vessel Sink 19 x 12 Inch Semi Recessed Bathroom Sink Rectangular White Ceramic Vessel Sink Modern Vanity Sink Bath Wash Sinks Bowl Above Counter Basin**Lordear**$67.58**16 rev1y ago](https://www.amazon.com/dp/B0DNMMWLK7)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Lordear Vessel Sink Rectangle 19 Inch Bathroom Sinks 19x12 Inch Semi Recessed Sink 5 Deep Rectangular White Ceramic Modern Vanity Sink Bath Wash Above Counter Basin**Lordear**$85.25**4.2★**▲ 287%**](https://www.amazon.com/dp/B0FQJ4F92V) [**Lordear Undermount Bathroom Sink 18x14 Inch White Rectangle Porcelain Ceramic Vessel Sinks Deep Basin with Overflow Lavatory Vanity Sink Mounted Under the Counter**Lordear**$66.90**4.6★**▲ 181%**](https://www.amazon.com/dp/B07MLVNLMY) [**KOHLER 2882-0 Verticyl Rectangular Undermount Bathroom Sink 19 3/4 White**Kohler**$190.82**4.5★**▲ 50%**](https://www.amazon.com/dp/B002UYSP5Q) [**KINGWONG 16 Inch Undermount Bathroom Sink Small White Porcelain Rectangular Ceramic Sink with Overflow Under Counter Wash Basin for Tiny House RV Laundry Powder Room Easy to Clean 15.75 x 11.82**KINGWONG**$73.16**4.6★**▲ 50%**](https://www.amazon.com/dp/B0BG35LD4P) [**Undermount Bathroom Sink Rectangle Hugsleek Interior Bowl Size 16 x 12 inch White Porcelain Ceramic Vessel Sink Under Counter Exterior Size 18x14in Rectangular Bath Sink Basin Lavatory Fireclay**Hugsleek**$66.83**4.8★**▲ 44%**](https://www.amazon.com/dp/B0D2VSDNBF)
**~~View all trending →~~**
## **What buyers say about bathroom undermount sink**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**26%
*“Good quality and look perfect in our bathrooms”*
**Size-Overall**12%
*“Size that I needed”*
**Value For Money**11%
*“Good product for the price”*
**Design-Overall**9%
*“perfect modern design”*
**Assembly/Installation**8%
*“Easy to install”*
**Advertised Vs Actual Product**4%
*“Exactly as described”*
**Thickness**3%
*“Thick glass looks great with this Black Pearl granite countertop”*
**Shape/Style**3%
*“Nice Shape”*
**Material Quality**2%
*“good quality material”*
**Strength**2%
*“The sinks are solid”*
### **What buyers complain about **
**Size-Overall**22%
*“Did not fit”*
**Drainage**11%
*“Oh no sink drain”*
**Assembly/Installation**6%
*“We haven't installed it yet”*
**Advertised Vs Actual Product**6%
*“The description doesn't indicate that”*
**Leak-Proof**6%
*“50/50 Defective and Leaking”*
**Quality-Overall**5%
*“No quality control”*
**Ease Of Use**3%
*“The Cut-Out Too much Trouble To Provide”*
**Functionality-Overall**3%
*“Does not work”*
**Noise Level**3%
*“Extremely loud faucet”*
**Value For Money**3%
*“Good a little costly”*
### **Top return reasons **
**Size-Overall**61%
**Defective Material/Parts**11%
**Color**7%
**Advertised Vs Actual Product**6%
**Value For Money**4%
**Drainage**2%
**Compatibility-Overall**1%
**Height**1%
**Material Quality**1%
**Functionality-Overall**1%
## **Common questions**
- **Is bathroom undermount sink profitable to sell on Amazon United States?**
- The niche generates $91K/yr across 78 tracked products. 1 of 15 products launched in the last 360 days are still selling. 90-day search growth is -13.0%. Flapen's verdict: Skip it (44/100).
- **How competitive is the bathroom undermount sink niche?**
- 39 brands and 86 sellers compete. The top 5 products take 27% of clicks and top 5 brands hold 45% of demand.
- **What do buyers complain about in bathroom undermount sink?**
- Top complaints mined from reviews: Size-Overall, Drainage, Assembly/Installation. The return rate is 7.4% — above our launch gate.
- **When does demand for bathroom undermount sink peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the bathroom undermount sink niche?**
- Listings span $48.22–$249.28; the average listing price is $80.89 (sweet spot $15–$100). The average incumbent carries 195 reviews — the moat a new listing must climb.
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