--- title: "DIY・工具・ガーデン Niches on Amazon JP — ¥40.3B/yr Tracked (2026) - Flapen" canonical_url: "https://flapen.com/research/jp/diy" last_updated: "2026-08-08T03:49:17.416Z" locale: en meta: description: "Market analysis of DIY・工具・ガーデン on Amazon Japan: 4191 niches tracked, ¥40.3B/yr of combined demand, each niche scored with a launch verdict." "og:description": "Market analysis of DIY・工具・ガーデン on Amazon Japan: 4191 niches tracked, ¥40.3B/yr of combined demand, each niche scored with a launch verdict." "og:title": "DIY・工具・ガーデン Niches on Amazon JP — ¥40.3B/yr Tracked (2026) - Flapen" --- # **DIY・工具・ガーデン** ¥40.3B/yr of tracked demand across 4,191 niches on Amazon Japan (median 90-day growth +2.8%) — led by 草刈り機 替え刃 at 79/100. #2 of 4 tracked Japan categories · 22% of the tracked market **Niches tracked** **4,191** Data through 2026-07-26 **Market / yr** **¥40.3B** across tracked niches **Median growth (90d)** **+2.8%** search volume vs the prior quarter **Launch-ready** **1,360** niches that clear our launch bar **1360** of 4191 tracked niches clear our launch bar. [Launch it **1360**](https://flapen.com/research/niches?market=jp&categories=jp:2016930051&verdict=launch "See these niches in the workspace") [ Worth a look **2040**](https://flapen.com/research/niches?market=jp&categories=jp:2016930051&verdict=watch "See these niches in the workspace") [ Skip it **791**](https://flapen.com/research/niches?market=jp&categories=jp:2016930051&verdict=skip "See these niches in the workspace") **Signals**[** Trending **573](https://flapen.com/research/niches?market=jp&categories=jp:2016930051&signal=trending) [** No Dominant Brand **783](https://flapen.com/research/niches?market=jp&categories=jp:2016930051&signal=no_dominant_brand) [** Low Review Barrier **1,443](https://flapen.com/research/niches?market=jp&categories=jp:2016930051&signal=low_review_barrier) [** Quality Gap **1,315](https://flapen.com/research/niches?market=jp&categories=jp:2016930051&signal=quality_gap) [** High Returns **1](https://flapen.com/research/niches?market=jp&categories=jp:2016930051&signal=high_returns) [** High Price **4,191](https://flapen.com/research/niches?market=jp&categories=jp:2016930051&signal=high_price) [** Out of Stock **361](https://flapen.com/research/niches?market=jp&categories=jp:2016930051&signal=out_of_stock) ## **Where the money is** Yearly tracked market size by niche +66 too small to tile at tap-target size — every entry is listed below the map Top 100 of 250 niches by market size shown ## **Top picks** The strongest niches we track in DIY・工具・ガーデン **Launch it** ### **草刈り機 替え刃** A $38.2M/yr market growing +268.1% this quarter with returns at 0.3% — clears our launch bar.
**Market/yr**
**¥38.2M**
**Growth 90d**
**+268.1%**
**Top-5 clicks**
**20%**
**Rating**
**3.7★**
**Launch it** ### **風鈴** A $14.2M/yr market growing +658.9% this quarter with returns at 0.4% — clears our launch bar.
**Market/yr**
**¥14.2M**
**Growth 90d**
**+658.9%**
**Top-5 clicks**
**25%**
**Rating**
**4.0★**
**Launch it** ### **草刈り機 ハンドル** A $5.2M/yr market growing +385.4% this quarter with returns at 0.4% — clears our launch bar.
**Market/yr**
**¥5.2M**
**Growth 90d**
**+385.4%**
**Top-5 clicks**
**30%**
**Rating**
**3.5★**
## **Opportunity map** Each bubble is one niche — 90-day growth against how locked the shelf is; bubble size tracks market size, color grades the verdict. Click a bubble to open its verdict. -50%0%+50%+100%+150%0%25%50%75%100% Top-5 click share — right = concentratedGrowth 90d草刈り機 替え刃草刈り機 ハンドル Launch it Worth a look Skip it ## **Demand & seasonality** Weekly Amazon search volume, last 104 weeks — median niche search growth of +2.8% over the last 90 days. 15.0M10.0MSpike '24Holiday '24Prime Day '25Spike '25Black Friday '25Prime Day '26 seasonSepDecMarJunAugNovMarMay No pronounced peak months · busiest ÷ quietest = 1.4× ## **Movers — rising vs cooling niches by 90-day growth** ### **Rising** #NameGrowth (90d) 1 根こそぎ抜ける手動草取りツール ¥918K/yr **↑>1,000%** 2 タカラ産業 室外機カバー ¥308K/yr **↑>1,000%** 3 蚤取りホイホイ ¥277K/yr **↑>1,000%** 4 蚊とり器 ¥956K/yr **↑>1,000%** 5 プールカバー ¥2.4M/yr **↑>1,000%** ### **Cooling** #NameGrowth (90d) 1 テトラポット ¥52.4M/yr **↓98.5%** 2 雪下ろし ¥21.0M/yr **↓98.2%** 3 防災頭巾 カバー付き ¥808K/yr **↓95.5%** 4 アンダーウォッシュ ¥3.6M/yr **↓95.4%** 5 雪かき ¥15.1M/yr **↓94.5%** ## **Niches** 4191 tracked | **#** | **Niche** | **Verdict** | **Score** | **Market/yr** | **90d** | **Top 5** | **Rating** | **Price** | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **草刈り機 替え刃** A $38.2M/yr market | **Launch it** | **79** | ¥38.2M | **+268.1%** | 20% | 3.7★ | ¥2057.86 | | 2 | **風鈴** A $14.2M/yr market | **Launch it** | **79** | ¥14.2M | **+658.9%** | 25% | 4.0★ | ¥1801.25 | | 3 | **草刈り機 ハンドル** Demand growing +385.4% this quarter | **Launch it** | **79** | ¥5.2M | **+385.4%** | 30% | 3.5★ | ¥2452.64 | | 4 | **はえたたき** Demand growing +349.4% this quarter | **Launch it** | **79** | ¥3.7M | **+349.4%** | 45% | 3.6★ | ¥821.72 | | 5 | **共立 刈払機 パーツ** A $11.0M/yr market | **Launch it** | **78** | ¥11.0M | **+249.0%** | 19% | 3.9★ | ¥2691.85 | | 6 | **防鳥ネット** A $10.9M/yr market | **Launch it** | **78** | ¥10.9M | **+127.4%** | 32% | 4.0★ | ¥1454.83 | | 7 | **高圧洗浄ノズル** Demand growing +328.8% this quarter | **Launch it** | **78** | ¥4.8M | **+328.8%** | 29% | 3.1★ | ¥1610.07 | | 8 | **室外機カバー** A $156.3M/yr market | **Launch it** | **77** | ¥156.3M | **+406.8%** | 39% | 4.0★ | ¥2228.94 | | 9 | **鳥よけ** A $49.9M/yr market | **Launch it** | **77** | ¥49.9M | **+107.1%** | 32% | 3.6★ | ¥1813.22 | | 10 | **網戸** A $13.5M/yr market | **Launch it** | **77** | ¥13.5M | **+266.8%** | 32% | 4.0★ | ¥1954.10 | [**~~Browse all DIY・工具・ガーデン niches A–Z → ~~**](https://flapen.com/research/jp/diy/niches) [**Explore all 4,191 niches **](https://flapen.com/research/niches?market=jp&categories=jp:2016930051)