Why the Kitchen Is One of Japan's Most Popular Reform Projects
The kitchen is consistently ranked among the top areas homeowners choose to renovate in Japan. After 15–20 years, system kitchens (システムキッチン) begin to show wear in the countertop surface, sink, and ventilation hood. Modern units offer significantly better ergonomics, energy efficiency, and storage solutions.
Understanding the Japanese System Kitchen
Unlike Western kitchens that are often built in place, Japanese kitchens are predominantly system kitchens — factory-manufactured modular units installed as a complete set. Major manufacturers include Panasonic, LIXIL (リクシル), Takara Standard, TOTO, and Cleanup. Each brand offers different price tiers, material options, and warranty terms.
Key components of a system kitchen include:
- Base cabinets — lower storage units supporting the countertop
- Wall cabinets — upper storage, often with soft-close mechanisms
- Countertop (天板) — materials include artificial marble, stainless steel, ceramic
- Sink unit — stainless or quartz composite options
- Range hood (レンジフード) — ventilation unit, often linked to the hob
- Cooking hob — gas (ガスコンロ) or IH induction options
Layout Options for Japanese Kitchens
| Layout | Japanese Name | Best For |
|---|---|---|
| I-shape (straight) | I型 | Narrow spaces, galley-style |
| L-shape | L型 | Corner spaces, efficient workflow |
| Peninsula (open) | ペニンシュラ型 | Open-plan living, family interaction |
| Island | アイランド型 | Large kitchens, social cooking |
Gas vs. IH: An Important Decision
Switching from gas to IH (induction heating) is one of the most common decisions made during a kitchen reform. IH hobs are easier to clean, have no open flame, and can reduce kitchen ventilation requirements. However, switching from gas to IH requires an electrical upgrade (typically to a 200V circuit) and means your existing gas cookware may need to be replaced.
Gas hobs remain preferred by many cooks for their high heat output and compatibility with any cookware, including woks. In Nagoya, gas supply from Toho Gas (東邦ガス) is widespread, so gas kitchens remain very common.
Ventilation: A Critical Compliance Point
Japan's Building Standards Act requires kitchens to meet specific ventilation standards. When reforming a kitchen, your contractor must ensure the new range hood meets current code. This is particularly relevant if you are converting a closed kitchen to an open-plan layout, which can affect ventilation zone calculations.
Typical Kitchen Reform Process
- Initial consultation and measurement by contractor
- Product selection (showroom visits recommended)
- Quotation and contract
- Removal of old kitchen unit (1 day)
- Plumbing and electrical preparation (1–2 days)
- Installation of new system kitchen (1–2 days)
- Finishing work, testing, and handover
Things to Confirm with Your Contractor
- Disposal fee for old kitchen unit (産廃処理費)
- Whether plumbing and electrical changes are included in the quote
- Manufacturer's warranty vs. contractor's installation warranty
- Timeline for product delivery (some system kitchens have 4–8 week lead times)