---
title: "Door Knob with Lock — $2.0M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/door-knob-with-lock"
last_updated: "2026-08-06T17:49:39.795Z"
locale: en
meta:
description: "Niche score 63/100 · $2.0M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 63/100 · $2.0M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Door Knob with Lock — $2.0M/yr Amazon US Niche (2026) - Flapen"
---
# **door knob with lock**
**Worth a look**
Shows a sweet-spot price point ($29.99 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 94Growth 25Conversion 50Competition 86Returns 39Price range 75Avg price 95Brand share 85Review moat 39Quality gap 45
**Avg price**
**Incredible****$29.99**
avg listing price — sweet spot $15–$100
**Market size**
**Great****$2.0M**
$2.0M/yr · 1.6M searches
**Competition**
**Great****29%**
top-5 click share — an open shelf
**Brand share**
**Great****50%**
top-5 brand share — no brand owns this niche
**Price range**
**Great****$6.88–$119.36**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****4.0%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,613.4**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Okay****3.9%**
return rate — above 5% kills the launch gate
**Growth**
**Bad****-0.9%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United States niche tracking, door knob with lock is a $2.0M/yr Amazon United States market (1.6M searches/yr). The top 5 brands hold 50% of demand. Verdict: Worth a look — 63/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **door knob with lock market data**
- **Units sold / yr**
- **60K–80K**
- avg 1,000–1,250/product
- **Revenue / yr**
- **$1.8M–$2.4M**
- units × avg price
- **Conversion rate**
- **4.0%**
- **Avg BSR**
- **#55**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **76%**
- **Out of stock**
- **1.1%**
- **Avg brand age**
- **47 months**
- **Avg seller age**
- **149 days**
## **Competition & brand share**
Clicks spread well past the top 5 (29% combined) — an open shelf where new products get seen.
**Brands**
**25 **—flat
**Sellers**
**73**
**Top-5 brand share**
**50%**
Top 20: 97%
**Top-5 click share**
**29%**
Top 20: 62%
**Open market**
**43%**
- BESTTEN13% - Probrico11% - Kwikset9% - Copper Creek9% - Estmoon8% - Goldenwarm7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -0.9% search growth over the last 90 days.
45K35KPrime Day '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/door-knob-with-lock/trend)
## **Top door knob with lock search terms**
- **black door knobs**503K/yr-8.1%2.5% conv. - **closet door knobs**244K/yr-4.9%1.6% conv. - **black door knobs interior**106K/yr-9.0%2.1% conv. - **doorknob with lock and key**87K/yr-0.7%5.4% conv. - **door knob lock**69K/yr+16.5%3.1% conv. - **black door knob**69K/yr+2.9%3.5% conv. - **door knob with key**61K/yr+10.8%5.4% conv. - **door knobs with lock and key**41K/yr+49.0%2.2% conv. - **door lock with key**60K/yr+19.9%3.9% conv. - **passage door knobs**58K/yr-5.4%3.2% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/door-knob-with-lock/search-terms)
## **Top door knob with lock 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%$59K6%$118K9%$177K12%$236K1001K10K100K 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**BESTTEN Keyed Entry Door Knob with Lock Heavy Duty Interior and Exterior Door Lock Standard Ball Satin Nickel**BESTTEN**$9.37**4.4★11,408 rev](https://www.amazon.com/dp/B08MFJYCV8) [2**Probrico Black Door Knobs for Bedroom Bathroom Interior Door Knob with Round Ball Matte Black Privacy Door Knob 6 Pack**Probrico**$34.03**4.5★4,249 rev](https://www.amazon.com/dp/B079R6C3Q7) [3**Goldenwarm Matte Black Door Knobs Interior Privacy Bedroom Door Knob with Lock Black Interior Door Knobs Bathroom 6 Pack**Goldenwarm**$58.14**4.5★142 rev](https://www.amazon.com/dp/B0FN384LZM) [4**Estmoon 5 Pack Matte Black Door Handles Interior Door Knobs Keyless Privacy Bedroom Door Lock Heavy Duty Zinc Alloy Home Improvement Door Handleset for Bedrooms Bathrooms**Estmoon**$51.45**4.4★2,159 rev](https://www.amazon.com/dp/B0C4SH85BZ) [5**LANSTE Black Door Knobs 10 Pack Privacy Door Knobs Interior Door Knob for Bedroom/Bathroom Keyless Doorknobs Interior/Exterior Lockset Black Modern Design Door Hardware**LANSTE**$46.48**4.6★118 rev](https://www.amazon.com/dp/B0GD68DLBG)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**LANSTE Black Door Knobs 10 Pack Privacy Door Knobs Interior Door Knob for Bedroom/Bathroom Keyless Doorknobs Interior/Exterior Lockset Black Modern Design Door Hardware**LANSTE**$46.48**118 rev4mo ago](https://www.amazon.com/dp/B0GD68DLBG) [**Goldenwarm Matte Black Door Knobs Interior Privacy Bedroom Door Knob with Lock Black Interior Door Knobs Bathroom 6 Pack**Goldenwarm**$58.14**142 rev8mo ago](https://www.amazon.com/dp/B0FN384LZM) [**Plustool 8 Pack Matte Black Door Knobs Privacy Door Knob with Lock Interior Doorknobs with Round Ball Keyless Door Lockset for Bedrooms Bathrooms**Plustool**$32.67**332 rev10mo ago](https://www.amazon.com/dp/B0FL6PWMYZ) [**RAFECIEE Keyed Entry Door Knob with Lock and Key Exterior and Interior Door Lock for Bedroom Entry Door Handle for Front DoorSatin Nickel**RAFECIEE**$8.97**676 rev1y ago](https://www.amazon.com/dp/B0F9FRBM6J) [**Estmoon 6 Pack Door Knobs Matte Black Privacy Door Knob with Lock Keyless Door Handle with Lock for Bedrooms/Bathrooms**Estmoon**$27.71**544 rev2y ago](https://www.amazon.com/dp/B0D9PSH4DR)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**LANSTE Black Door Knobs 10 Pack Privacy Door Knobs Interior Door Knob for Bedroom/Bathroom Keyless Doorknobs Interior/Exterior Lockset Black Modern Design Door Hardware**LANSTE**$46.48**4.6★**▲ 176%**](https://www.amazon.com/dp/B0GD68DLBG) [**Copper Creek Colonial Privacy Interior Door Knob ANSI Grade-3 Certified Modern Heavy Duty Handle Easy Install and Reversible for Bedroom Bathroom and Closets Matte Black (1 Pack)**Copper Creek**$10.57**4.7★**▲ 140%**](https://www.amazon.com/dp/B003F35WS4) [**Goldenwarm Matte Black Door Knobs Interior Privacy Bedroom Door Knob with Lock Black Interior Door Knobs Bathroom 6 Pack**Goldenwarm**$58.14**4.5★**▲ 131%**](https://www.amazon.com/dp/B0FN384LZM) [**Kwikset Tylo Interior Passage Door Knob Handle For Closet and Hallway Doors Non-Locking Doorknob in Satin Nickel with Microban Protection 1 Count (Pack of 1)**Kwikset**$12.92**4.6★**▲ 116%**](https://www.amazon.com/dp/B077Y7315M) [**NCSEN Matte Black Door Knobs Interior Door Knob with Lock Coastal Style Door knob for Privacy and Bedroom (Bath or Privacy)**NCSEN**$10.67**4.5★**▲ 60%**](https://www.amazon.com/dp/B0D14NK8ZZ)
**~~View all trending →~~**
## **What buyers say about door knob with lock**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**21%
*“Easy assemble”*
**Quality-Overall**15%
*“Solid quality”*
**Value For Money**14%
*“they are affordable”*
**Locking Mechanism**11%
*“The locking mechanism works smoothly”*
**Advertised Vs Actual Product**4%
*“As shown”*
**Size-Overall**4%
*“Awesome fit”*
**Design-Overall**4%
*“Well built”*
**Strength**3%
*“These are sturdy”*
**Ease Of Use**3%
*“Ease of use”*
**Efficiency**3%
*“Works Great”*
### **What buyers complain about **
**Locking Mechanism**19%
*“Does not lock”*
**Quality-Overall**17%
*“Poor Quality Control”*
**Durability**9%
*“Fell apart”*
**Assembly/Installation**8%
*“Difficult to assemble”*
**Size-Overall**5%
*“It was too big”*
**Functionality-Overall**4%
*“doesn't function well”*
**Ease Of Use**3%
*“hard to turn”*
**Strength**2%
*“kind of flimsy”*
**Instructions/User Manual/Troubleshooting**2%
*“Not very good instructions”*
**Value For Money**2%
*“it looks much more expensive than it actually is”*
### **Top return reasons **
**Size-Overall**36%
**Locking Mechanism**12%
**Functionality-Overall**9%
**Defective Material/Parts**7%
**Mechanism Issues**6%
**Compatibility-Overall**6%
**Color**4%
**Value For Money**4%
**Advertised Vs Actual Product**3%
**Quality-Overall**3%
## **Common questions**
- **Is door knob with lock profitable to sell on Amazon United States?**
- The niche generates $2.0M/yr across 67 tracked products. 10 of 10 products launched in the last 360 days are still selling. 90-day search growth is -0.9%. Flapen's verdict: Worth a look (63/100).
- **How competitive is the door knob with lock niche?**
- 25 brands and 73 sellers compete. The top 5 products take 29% of clicks and top 5 brands hold 50% of demand.
- **What do buyers complain about in door knob with lock?**
- Top complaints mined from reviews: Locking Mechanism, Quality-Overall, Durability. The return rate is 3.9%.
- **When does demand for door knob with lock peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the door knob with lock niche?**
- Listings span $6.88–$119.36; the average listing price is $29.99 (sweet spot $15–$100). The average incumbent carries 2,613 reviews — the moat a new listing must climb.
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