Leasing or finding premises for small-scale childcare in Japan — what use zone and floor area actually decide

In short: premises for small-scale childcare do not stall on the use zone. A 保育所 (hoikusho, nursery) can be built even in the Category I exclusively low-rise residential zone, the most restrictive of them (Building Standards Act, Appended Table 2, item (i), No. 6). What stalls a project is four other things: the floor area per child (3.3 m² for a child under two, 1.98 m² for a child of two or over), whether a change-of-use confirmation application is required, the fire safety equipment, and the escape rules that apply where the room is above the ground floor. All four can be checked before the lease is signed.

"All that is left is to choose the property." Then the search stops at the viewing. The backtracking that happens with care-service premises and clinics happens with childcare too. This article is for operators planning small-scale childcare in Tokyo (a licensed capacity of 6 to 19 children) and for the landlords and agents who introduce and lease the premises. Whether the business itself is licensed is decided by the municipality; final confirmation rests with the municipality, the specified administrative authority and the fire station with jurisdiction.

Can the premises be built in the use zone?

The use zone is rarely the obstacle.

The 建築基準法 (Building Standards Act, Act No. 201 of 1950) lists, in Appended Table 2, the buildings permitted in each use zone. A nursery is permitted even in the Category I exclusively low-rise residential zone, the most restrictive (Appended Table 2, item (i), No. 6: "homes for the elderly, nurseries, welfare homes and the like"). Being permitted in that zone means it is also permitted in the other residential zones and in the commercial and industrial zones. A nursery is not, in principle, refused on the ground of the use zone.

But that is the zoning question alone. To actually run small-scale childcare you separately need a licence under the 児童福祉法 (Child Welfare Act, Act No. 164 of 1947). Small-scale childcare is one of the "regional childcare services" defined in Article 6-3, paragraph 10 — a licensed capacity of 6 to 19 children, in principle under three years old. Where the operator is not the state, a prefecture or a municipality, Article 34-15, paragraph 2 requires the mayor's licence.

Question	What decides it	Where to check
Can a building be built in the zone	Building Standards Act, Appended Table 2	Specified administrative authority
Is the business licensed	Child Welfare Act; municipal ordinance	Municipality (childcare division)

How zoning and floor-area ratio move land prices is covered in this article. Confirm the use zone with the specified administrative authority.

How much floor area and daylight are required?

This is the real dividing line. Capacity is capped by area.

The equipment for small-scale childcare (Type A and Type B) is set out in Article 28 of the Standards for Facilities and Operations of Family-Based and Small-Scale Childcare (Ministry of Health, Labour and Welfare Ordinance No. 61 of 2014), which each municipality gives concrete form to by ordinance (Article 34-16 of the Act).

Category	Rooms / equipment required	Floor area per child
Under 2 years	Infant room or crawling room, cooking facilities, toilet	Infant/crawling room 3.3 m² or more
2 years and over	Playroom, outdoor play area, cooking facilities, toilet	Playroom 1.98 m² or more / outdoor play area 3.3 m² or more

Note that the area is taken differently from a licensed nursery. A licensed nursery (Standards for Facilities and Operations of Child Welfare Institutions, Ordinance No. 63 of 1948, Article 32) splits the infant room (1.65 m² per child) from the crawling room (3.3 m² per child). Small-scale childcare merges them into "infant room or crawling room" at a flat 3.3 m² for a child under two. A capacity calculated on the nursery standard does not match one calculated on the small-scale standard.

Daylight is also a requirement. Article 19, paragraph 3 of the Enforcement Order of the Building Standards Act (Cabinet Order No. 338 of 1950) requires the effective daylight area of a nursery's playroom to be at least one-fifth of the floor area (relaxed in some cases where lighting equipment is installed). In a tenant room with small windows, this can cap the capacity. So at the viewing you are not asking "is it large?" but "will the target capacity fit in this floor area and these windows?" Ask the municipal childcare division first how the ordinance calculates the area.

When is a change-of-use confirmation application required?

Here a nursery is the reverse of a clinic.

A clinic without beds does not fall within column (i) of Appended Table 1 of the Building Standards Act, so it does not, in principle, need a change-of-use confirmation. A nursery is different. Article 115-3, item 1 of the Enforcement Order designates "child welfare institutions and the like (including integrated centres for early childhood education and care)" as a use akin to Appended Table 1, column (i), row (2) (hospitals, clinics with beds, apartment buildings, etc.). A nursery is a child welfare institution.

As a result, under Article 87, paragraph 1 and Article 6, paragraph 1, item 1, a change of use into a nursery where the total floor area for that use exceeds 200 m² requires a confirmation application. At 200 m² or below it is, in principle, not required.

	Change of use into a clinic without beds	Change of use into a nursery
Special building under Appended Table 1 (i)	No	Yes (via Enforcement Order Art. 115-3)
Change-of-use confirmation (Art. 87 (1))	In principle not required	Required if that floor area exceeds 200 m²

Even where confirmation is not required, the Building Standards Act still applies. Article 87, paragraph 2 applies Article 48 and other provisions, and the substantive requirements — daylight (Art. 19), means of escape, interior finish restrictions — apply according to the new use regardless of whether a confirmation is needed. "No confirmation application" does not mean "nobody looks at the work." The confirmation drawings themselves are the work of an architect (the designer).

Where do the extra fire safety costs come from?

A nursery falls under item (6)(ha) of Appended Table 1 of the Enforcement Order of the Fire Service Act (Cabinet Order No. 37 of 1961). Because infants — people who need help to evacuate — use the facility, the assessment is made carefully.

Equipment	Rough approach for a nursery ((6)(ha))	Basis
Fire extinguishers	Required at 150 m² or more	Fire Service Enforcement Order Art. 10
Automatic fire alarm	In principle at 300 m² or more, but the standard can change with the facility's actual use	Art. 21
Sprinklers	Stricter for facilities housing those unable to self-evacuate ((6)(ro)); an ordinary nursery is often out of scope	Art. 12

There are two traps. One: where you lease a single room in a tenant building, the unit of assessment can be the whole building, not the room. Two: a facility used mainly by infants may need an automatic fire alarm without waiting for the floor-area threshold, depending on nap and evacuation-support realities. "It is small, so it is exempt" does not always hold.

Whether the equipment is already installed, whether additional work is needed, and who pays — consult the fire station with jurisdiction before signing. A comparable case is covered here. And where the playroom is above the ground floor, Article 28 of the childcare standards adds fire-resistant construction and dedicated escape stairs and routes that a single storey does not need; a cheaper upper floor can end up more expensive.

In what order should things be checked?

Order	What to check	Where
1	Use zone; district plans and ordinances	Specified administrative authority
2	How the ordinance calculates area; will the target capacity fit	Municipality (childcare division)
3	Change-of-use confirmation (over 200 m²?); certificate of inspection	Specified administrative authority / designated agency
4	Daylight, means of escape (extra rules above the ground floor)	Architect (designer)
5	Fire safety equipment required and already installed	Fire station with jurisdiction
6	Landlord's consent (use, signage, plumbing, restoration, incidents)	Landlord / management company
7	Lease terms	Licensed real estate agent

Signing before items 1 to 5 are settled puts the cost of backtracking on the tenant. Which clauses of a Japanese lease to read is covered here, why the same backtracking happens with care premises here, and the contrast with a clinic's change of use here. How to find group-home premises for disability welfare is here. See also investment and commercial property and offices and permits.

Who should you consult?

Property investigation, brokerage and the lease are handled by Yotsuba Real Estate Co., Ltd. (licensed real estate agent, Tokyo Governor (1) No. 113304). Preparation of documents submitted to public authorities — including the licence application — is handled by Yotsuba Administrative Scrivener Office. The change-of-use confirmation drawings are the work of an architect (designer); the fire safety assessment rests with the fire station; the licence itself is decided by the municipality.

Yotsuba Real Estate and Yotsuba Administrative Scrivener Office are two independent business entities, engaged separately and directly by you. We neither pay nor accept referral fees or introduction commissions. Registration is for a judicial scrivener, tax for a licensed tax accountant, disputes for an attorney — each engaged by you directly. Consultation is free of charge.

Frequently asked questions

Q. Can small-scale childcare premises be leased in a Category I exclusively low-rise residential neighbourhood?
A. Appended Table 2, item (i), No. 6 of the Building Standards Act lists "nurseries" among the buildings permitted there, so the use zone is rarely the obstacle. District plans, ordinances, the existing structure, and parking or drop-off space vary by property. Confirm with the specified administrative authority and the municipality.

Q. Does the capacity calculated on the licensed-nursery standard also fit for small-scale childcare?
A. No. A licensed nursery splits the infant room (1.65 m²) from the crawling room (3.3 m²), whereas small-scale childcare (Type A/B) uses "infant room or crawling room" at a flat 3.3 m² for under-twos, and 1.98 m² for the playroom for two-and-overs (Article 28 of the childcare standards). Confirm the ordinance's calculation with the municipality.

Q. We are turning one floor of an office building into a small-scale nursery. Is a change-of-use confirmation required?
A. A nursery is a special building akin to Appended Table 1 column (i) row (2) by way of Article 115-3, item 1 of the Enforcement Order. Where the total floor area for that use exceeds 200 m², a confirmation under Article 87, paragraph 1 is required. Below 200 m² the substantive rules on daylight and escape still apply. Check the scope of work with your architect and the administrative authority.

Q. Does a small nursery need an automatic fire alarm?
A. A nursery falls under Appended Table 1 (6)(ha) of the Fire Service Enforcement Order, and an alarm is in principle required at 300 m² or more (Article 21). But a facility used by infants can be assessed more strictly, and in a tenant building the assessment can cover the whole building. Consult the fire station with jurisdiction, including on existing equipment.

Sources (primary)

• e-Gov "建築基準法" (Building Standards Act) — Act No. 201 of 1950. Art. 6 (1) (i); Art. 87 (1) and (2); Appended Table 2 item (i) No. 6 (nurseries). Current text as amended by Act No. 23 of 2026, in force 27 May 2026. Accessed 24 August 2026.
• e-Gov "建築基準法施行令" (Enforcement Order of the Building Standards Act) — Cabinet Order No. 338 of 1950. Art. 19 (3) (nursery playroom daylight, one-fifth of floor area); Art. 115-3 item 1 (child welfare institutions as a use akin to Appended Table 1 (i)(2)). Accessed 24 August 2026.
• e-Gov "児童福祉法" (Child Welfare Act) — Act No. 164 of 1947. Art. 6-3 (10) (small-scale childcare, capacity 6–19, under 3); Art. 34-15 (2) (mayor's licence); Art. 34-16 (municipal ordinance). Accessed 24 August 2026.
• e-Gov "家庭的保育事業等の設備及び運営に関する基準" (Standards for Facilities and Operations of Family-Based and Small-Scale Childcare) — Ordinance No. 61 of 2014. Art. 28 (Type A equipment: infant/crawling room 3.3 m², playroom 1.98 m², outdoor play area 3.3 m², escape above the ground floor); Art. 29 (staff). Accessed 24 August 2026.
• e-Gov "児童福祉施設の設備及び運営に関する基準" (Standards for Facilities and Operations of Child Welfare Institutions) — Ordinance No. 63 of 1948. Art. 32 (licensed nursery: infant room 1.65 m², crawling room 3.3 m², playroom 1.98 m² — for contrast). Accessed 24 August 2026.
• e-Gov "消防法施行令" (Enforcement Order of the Fire Service Act) — Cabinet Order No. 37 of 1961. Appended Table 1 (6)(ha) (nurseries); Art. 10 (extinguishers); Art. 12 (sprinklers); Art. 21 (automatic fire alarm). Current text as amended by Cabinet Order No. 85 of 2025, in force 1 October 2025. Accessed 24 August 2026.

Whether a change-of-use confirmation is required depends on the uses before and after, floor area, whether the change is between similar uses designated by Cabinet Order, and whether construction is involved. This article does not assess any individual property. Fire safety obligations depend on the category, floor area, storeys, structure and the users' circumstances; prior consultation with the fire station with jurisdiction is necessary. The standards and the treatment of a substitute outdoor play area are given concrete form by municipal ordinance — check the municipality's own page and division when you start.

This article is general information. It does not judge or guarantee the feasibility of any particular property or the grant of any licence. Final confirmation rests with the municipality, the specified administrative authority and the fire station. Property investigation, brokerage and leases are undertaken by Yotsuba Real Estate Co., Ltd. (licensed real estate agent); documents for submission to public authorities, including the licence application, by Yotsuba Administrative Scrivener Office — two independent business entities, engaged separately and directly. The change-of-use confirmation drawings are an architect's work. We neither pay nor accept referral fees.

About the author

Joji Uramatsu — licensed real estate transaction specialist (Tokyo Governor registration No. 293544) and administrative scrivener (registration No. 25087022). Representative Director, Yotsuba Real Estate Co., Ltd. (licensed real estate agent, Tokyo Governor (1) No. 113304); principal, Yotsuba Administrative Scrivener Office. Kohinata, Bunkyo, Tokyo, about five minutes' walk from Myogadani station. Property and paperwork are put on the same table. Full profile: author page.