Japanese rental units come with a fixed set of built-in equipment — stove, range hood, water heater, air conditioner, and plumbing fixtures — that the landlord, not the tenant, must maintain and replace. This is distinctly Japanese: in many English-speaking markets tenants bring their own appliances, so a breakdown is their problem. In Japan it is the owner's problem, and a sudden failure — no hot water, a faucet that will not stop running — can push a tenant to move out. This guide covers replacement timing, warning signs, and cost benchmarks (converted to USD) for each system.
What to Check Before Replacing Equipment in a Japanese Rental Property
Most built-in equipment is recommended for replacement around the 10-year mark, though service life varies with usage. Unlike a US or UK landlord who might wait for a tenant complaint, Japanese owners and their property management company (kanri gaisha, 管理会社 — the local firm handling maintenance on the owner's behalf) track equipment age proactively.
Built-in Gas Stove (Biruto-in Konro, ビルトインコンロ)
Japanese kitchens use a built-in gas stove (biruto-in konro) fixed into the countertop, rather than the freestanding range common in North America and Europe — unambiguously landlord property. Using one past its service life is a fire-safety hazard. Consider replacement if:
- The flame goes out immediately: usually a dead battery or dirty igniter. If cleaning or a battery swap does not fix it, the unit may have failed.
- The flame color looks abnormal: red or orange rather than blue signals incomplete combustion and a carbon monoxide risk.
- You smell gas: stop using it immediately and contact the gas utility or management company.
The unit itself typically costs ¥70,000–¥100,000 (approx. $455–$650 at 155 JPY/USD), plus ¥10,000–¥20,000 (approx. $65–$130) for installation. Quotes from multiple contractors can reduce the total.
Range Hood
The range hood comes in a few standard shapes, and shape affects both upkeep and lifespan:
- Uncovered propeller type (kabā-nashi-gata): a propeller fan mounted directly on the exterior wall, exposed to outside temperature.
- Shallow type (asa-gata): compact, but grease builds up quickly and needs frequent cleaning.
- Deep / boot type (fuka-gata): the most common style, with a filter that limits grease scatter.
Water Heater (Kyūtōki, 給湯器)
The water heater — a compact wall-mounted or outdoor unit, not the tank-style heater in a US basement — lasts roughly 10 to 15 years. Watch for:
- Hot water temperature fluctuating instead of staying steady
- Unusual noise or a burning smell during operation
- Reheating the bath (oidaki, 追い焚き — recirculating and reheating water already in the tub, standard in Japan and rare elsewhere) taking noticeably longer
- The remote panel frequently showing an error code
Air Conditioner
Air conditioners last about 10 to 13 years. The standard unit is a wall-mounted split-type heat pump handling both heating and cooling — unlike separate furnace-and-central-air systems common in the US, or radiator heating common in Europe. Weak performance, unusual noise, or a water leak are signs to replace it.
Plumbing Fixtures
Toilets, vanities, and bathroom fixtures generally last 15 to 20 years. Addressing leaks or cracks promptly prevents damage spreading into the building structure — a real concern in Japan's wood-frame and light-steel buildings, where a leak can reach the unit below or next door.
Replacement Timing and Cost Benchmarks by Equipment Type
The table below summarizes typical replacement timing and cost, with JPY converted to USD at roughly 155 JPY/USD (¥10,000 ≈ $65).
| Equipment | Typical Replacement Timing | Typical Replacement Cost |
|---|---|---|
| Built-in gas stove | 10–15 years | ¥80,000–¥120,000 (approx. $520–$780) |
| Range hood | 8–10 years | ¥70,000–¥150,000 (approx. $455–$975) |
| Water heater | 10–15 years | ¥100,000–¥250,000 (approx. $650–$1,625) |
| Air conditioner | 10–13 years | ¥50,000–¥150,000 (approx. $325–$975) |
| Toilet | 15–20 years | ¥50,000–¥200,000 (approx. $325–$1,300) |
| Bathroom faucet | 10–15 years | ¥20,000–¥50,000 (approx. $130–$325) |
| Intercom | 10–15 years | ¥30,000–¥100,000 (approx. $195–$650) |
Should You Replace Equipment That Is Not Yet Broken?
The short answer is yes — planned, proactive replacement is standard among experienced Japanese landlords, unlike the more reactive, tenant-driven repair culture common in English-speaking markets. Since the owner covers every built-in appliance, scheduled replacement is routine asset management. The reasons:
- Vacancy prevention: newer equipment is a concrete selling point when marketing a unit, especially in a competitive market like central Tokyo.
- Energy efficiency: newer water heaters and air conditioners are far more efficient than models a decade old, lowering the tenant's utility bills.
- Avoiding emergency trouble: scheduled replacement avoids the higher cost and tenant frustration of an emergency callout after an unannounced failure.
What Tenants Are Responsible for Replacing Themselves
As a general rule, the following consumables are the tenant's own expense — a division of responsibility usually spelled out in the lease agreement (chintai keiyaku, 賃貸借契約) rather than left to custom, which matters for foreign tenants and overseas owners unfamiliar with Japanese rental norms:
- Light bulbs and fluorescent tubes in light fixtures
- Routine cleaning of the air conditioner's air filter
- Rubber gaskets and washers (pakkin, パッキン) that prevent faucet leaks
- Batteries in remote controls
That said, failure of the equipment itself or ordinary aging remains the owner's responsibility. Spelling this out clearly in the lease removes ambiguity for an overseas owner and a tenant unfamiliar with local norms alike.
Can Equipment Replacement Costs Be Deducted as a Business Expense?
Replacement costs can be deducted on Japan's annual income tax return (kakutei shinkoku, 確定申告) as either a repair expense or a capital expenditure — similar to the repair-versus-improvement test used in the US and UK, though the thresholds below are Japan-specific.
- Full deduction as a repair expense (shūzenhi, 修繕費): restoring original condition or simply maintaining function can be expensed in full for that year.
- Depreciation as a capital expenditure (shihonteki shishutsu, 資本的支出): an upgrade in function must instead be depreciated over its statutory useful life, across multiple years.
When unclear, Japanese practice generally allows an item under ¥200,000 (approx. $1,300) per replacement to be booked as a repair expense. Consulting a Japanese tax accountant (zeirishi, 税理士) before finalizing the classification is recommended.
Frequently Asked Questions (FAQ)
Can equipment be replaced while a tenant is still living there?
Yes, as long as it is scheduled in coordination with the tenant. Equipment tied directly to daily habitability — a water heater or a toilet — should be addressed promptly, since Japanese tenants generally expect a fast response.
What happens if a tenant replaces equipment without authorization?
In principle, a tenant cannot replace landlord-owned equipment on their own initiative. Doing so may expose them to a restoration claim at move-out under Japan's genjō kaifuku (原状回復) rule — a duty to return the unit to its original condition, stricter than typical Western wear-and-tear allowances. Any issue should be reported to the owner or management company instead.
Does replacing equipment improve tenant satisfaction?
Yes. The condition of built-in equipment significantly affects tenant satisfaction, and the age of plumbing fixtures and the air conditioner strongly shapes a prospective tenant's first impression during a viewing — worth weighing when budgeting upgrades ahead of re-leasing.
Related Reading
- When Should You Replace a Range Hood? A Complete Guide to Lifespan, Types, and Selection
- Adding Bath-Reheating (Oidaki) to a Japanese Rental Property: Retrofit Costs, Benefits, and How to Choose a Contractor
- What Is Urethane Waterproofing? Types, Costs, and Contractor Selection for Japanese Apartment Buildings
