Renovation vs. New Construction Cost Comparison
The conditions behind the Yubari City case that came in at about one-third of new construction, and how to check seismic performance
The unit costs by item and the amounts in the subsidy scenarios are assumptions this article makes, not published statistics. They move a great deal with the building, the area and the line of business, so replace them with your own quotes and comparable local results. Amounts attached to a source are the figures in that source.
Yubari City, Hokkaido: the contract amount for the part converted from the old school building, compared by the Construction Research Institute article with the average cost of building new (Kensetsu Bukka, October 2018)
About 1/3
Renovation costs for the 47 cases in MEXT's Closed School Reuse Case Collection (March 2023)
¥0 to about ¥2.93 billion
The first question any operator faces when considering closed school reuse is how much renovation will cost. Some conversions have come in well below new construction, but how much you save depends on the building's condition and the scope of the work.
A Case That Came In at About One-Third of New Construction
When the former Nozomi Elementary School in Yubari City, Hokkaido (completed 1986, closed 2011) became the Yubari Momijien home for the elderly, a survey found the main structure, exterior walls and roof in good enough condition that light renovation sufficed. The final contract amount for the part converted from the old school building (2,145.20m² total floor area, excluding the extension) was ¥158.53 million, or ¥73,900/m², which the article says came to about one-third of the average cost of building new. It adds that the nine-month construction period also helped keep costs down.The one-third ratio belongs to this building, whose main parts needed no major work. It does not carry over to other closed schools as it stands.
Why Renovation Can Cost Less Than New Construction
New construction starts from the foundations and frame. A renovation can skip that work where the existing foundations, frame and roof are in usable condition.
| Cost Category | New Construction | Closed School Renovation |
|---|---|---|
| Foundation and structural frame | Required | Not required or minimal, if in usable condition |
| Roof and exterior wall | Required | Partial only, depending on condition |
| Interior finishes | Required | Required |
| Electrical and plumbing systems | Required | Required (may need updating) |
| HVAC systems | Required | Required (may need updating) |
If the frame or foundations are damaged, renovation costs rise. When the former Shimada Elementary School in Nagaoka City, Niigata, became a disability employment support facility, the work included repairing columns deformed by age, adjusting foundations that had sunk after earthquakes, and bringing the building up to the current Building Standards Act and Fire Service Act, which cost a considerable amount. Renovation cost about ¥235 million in total.
Prerequisite: Checking Seismic Performance
Check seismic performance before estimating renovation costs. MLIT notes that many buildings built in or before 1981 were built under the so-called old seismic standards, before the standards were strengthened, and lack adequate seismic performance. It urges owners to start with a seismic diagnosis and to consider retrofitting or rebuilding if performance falls short. Seismic diagnosis is legally mandatory for large buildings built under the old standards and similar cases; for elementary and junior high schools, the threshold is two or more storeys and 3,000m² or more of total floor area. For houses and small buildings, diagnosis and any needed retrofit are an obligation to make efforts. The current seismic standards took effect in June 1981.
Construction year alone does not settle it, so ask the municipality whether the building has had a seismic diagnosis and what it found. The case collection notes that the former Etchuhata Elementary School in Nishiwaga Town, Iwate (built in FY1980), already met seismic standards before reuse and subsidies were available, so opening costs could be covered with borrowing alone. The Yubari City building was completed in 1986, after the current standards took effect.
Cost Breakdown by Category and Unit Cost
This article's unit cost assumptions for each item, and the installation conditions for fire safety equipment and accessibility
Renovation costs for a closed school are composed of the following categories. The unit costs and amounts in the tables are this article's assumptions (see the note at the top). The installation conditions for fire safety equipment and accessibility are taken from the statutes.
1. Structural and Seismic Work
| Condition | Work Required | Estimated Cost-per-m² |
|---|---|---|
| Seismic diagnosis finds performance adequate | No seismic reinforcement | ¥0 |
| Seismic diagnosis finds performance inadequate | Seismic reinforcement work | ¥20,000–50,000 |
| Significant exterior wall deterioration | Exterior repair and waterproofing | ¥10,000–30,000 |
2. Roof and Exterior Walls
| Work Type | Estimated Unit Cost |
|---|---|
| Roof waterproofing repair | ¥5,000–15,000/m² |
| Full roof replacement | ¥15,000–25,000/m² |
| Exterior wall repainting | ¥3,000–8,000/m² |
| Exterior wall re-cladding | ¥10,000–20,000/m² |
3. Interior Finishes
Putting classrooms and corridors to another use can call for floor, wall and ceiling work and for partitions to divide rooms.
| Work Type | Estimated Unit Cost |
|---|---|
| Flooring replacement (hardwood) | ¥8,000–15,000/m² |
| Flooring replacement (tile/cushion floor) | ¥5,000–10,000/m² |
| Wall wallpaper replacement | ¥1,500–3,000/m² |
| Ceiling repair/replacement | ¥3,000–6,000/m² |
| New partition wall installation | ¥100,000–200,000 per location |
4. Electrical and Plumbing Systems
How much of the electrical and plumbing systems needs replacing depends on the building's age and how it was maintained after closure. For welfare or food service uses, check the condition of the pipes and the electrical capacity first.
| System Category | Estimated Replacement Cost |
|---|---|
| Electrical systems (panels and wiring) | ¥5–20 million |
| Plumbing (pipe replacement) | ¥3–15 million |
| Sanitary equipment (toilets, washbasins) | ¥2–5 million |
5. HVAC Systems
Dividing classrooms into individual rooms or workrooms can mean each room needs its own air conditioning. For welfare facilities, check that the temperature can be set room by room.
| HVAC Work | Estimated Cost |
|---|---|
| New individual room/classroom split systems | ¥300,000–800,000 per room |
| Replacement of existing central system | ¥2–8 million (scale-dependent) |
6. Accessibility Modifications
When a building is converted into a home for the elderly, a welfare home or similar (used mainly by older people or persons with disabilities), or into a welfare centre for the elderly, a children's recreation facility, a welfare centre for persons with physical disabilities or similar, and the floor area being converted totals 2,000m² or more, it must meet the building accessibility standards (Barrier-Free Act, Article 14(1); Enforcement Order, Articles 5 and 9). Local governments can add buildings or lower this area by ordinance (Article 14(3)). Below the threshold, these specified buildings must still be brought toward the standards as an obligation to make efforts (Article 14(5)). Check how much work is needed against local ordinances as well.
| Accessibility Work | Estimated Cost |
|---|---|
| Ramp installation | ¥500,000–2,000,000 (scale/grade-dependent) |
| Step removal (corridors and entries) | ¥100,000–300,000 per location |
| Accessible toilet installation | ¥1,000,000–2,500,000 per unit |
| Grab rail installation (corridors, stairs) | ¥30,000–80,000/m |
| Elevator installation (2+ story buildings) | ¥10–20 million |
7. Fire Safety Equipment
Changing the use can require fire safety equipment that the building did not need as a school. The Construction Research Institute article notes that under the Fire Service Act a school faces few requirements because only specific people use it, but converting it into a facility used by many unspecified people brings obligations such as adding evacuation guide lights and installing smoke vents.
Whether equipment is required depends on the use categories in Appended Table 1 of the Fire Service Act Enforcement Order, together with floor area, storey and capacity. Schools fall under category (7). After-school day services fall under (6)(c)(4), and daily life support, transition support for employment and continuous employment support fall under (6)(c)(5). Homes for the elderly, special nursing homes for the elderly, and small-scale multifunctional home care facilities where older people who would have difficulty evacuating mainly stay overnight fall under (6)(b)(1).
| Fire Safety Equipment | Main Conditions for Installation (Fire Service Act Enforcement Order) | Estimated Cost |
|---|---|---|
| Automatic fire alarm | Regardless of floor area for category (6)(b), and for category (6)(c) facilities where users live in or stay overnight. Other category (6)(c) facilities: 300m² or more of total floor area. Schools (category (7)): 500m² or more (Article 21) | ¥1–4 million |
| Sprinkler system | Category (6)(b)(1) and (3): regardless of floor area. (6)(b)(2), (4) and (5): 275m² or more of total floor area (regardless of area where the facility mainly houses people who cannot evacuate without assistance). Both exclude structures that limit fire spread as set by MIC ordinance. Category (6)(c): buildings other than single-storey with 6,000m² or more of total floor area, or floors of 1,000m² or more in a basement or windowless storey, or of 1,500m² or more on the 4th to 10th floors, among others (Article 12) | ¥3–15 million |
| Guide lights and evacuation equipment | Exit and passage guide lights: the whole building for category (6); for schools (category (7)), basements, windowless storeys and the 11th floor and above (Article 26). Evacuation equipment: floors of category (6) buildings on the 2nd floor or above or in a basement, with a capacity of 20 or more people (Article 25) | ¥500,000–2,000,000 |
If only part of a school building is put to another use, the building can become a mixed-use property under category (16) of Appended Table 1, which changes how the conditions apply. Confirm with the local fire department which equipment is required before design begins.
Renovation Costs in the MEXT Case Collection
The range of renovation costs across the 47 cases, and seven welfare, childcare and medical cases
Even for similar floor areas, renovation costs vary widely with the use and the scope of the work. MEXT's case collection gives renovation costs for 47 cases, ranging from ¥0 (Ogano Town, Saitama, a filming location for films, TV and commercials) to about ¥2.93 billion in total (Sakai City, Osaka, a university). Even at around 2,000m², the drone development and research facility in Minobu Town, Yamanashi (1,996m²) cost about ¥1 million in total, while the rice cracker factory in Koshimizu Town, Hokkaido (2,170m²) cost about ¥450 million.
The seven cases with welfare, childcare and medical uses are listed below. Facility size and renovation cost are given as written in the "basic facility information" of each case.
| Municipality and Former School | Use | Facility Size | Renovation Cost | Breakdown (as written in the collection) |
|---|---|---|---|---|
| Saikai City, Nagasaki; former Matsushima Elementary School | After-school children's club | 166m² | About ¥8.14 million in total | Municipality about ¥8.14 million; operator about ¥1,000 |
| Nishiwaga Town, Iwate; former Etchuhata Elementary School | Small-scale multifunctional care home (welfare facility for the elderly) | 489.78m² | About ¥41.5 million in total | Operator about ¥8.5 million; subsidies about ¥33 million |
| Minamisatsuma City, Kagoshima; former Kasasa Elementary School | Complex with a city office branch, clinic and other facilities | 699.27m² | About ¥231 million in total | Municipality about ¥180 million; subsidies about ¥51 million |
| Miharu Town, Fukushima; former Sawaishi Elementary School | Welfare-oriented farming facility (welfare facility for persons with disabilities) | 1,344.52m² | About ¥4 million in total | No subsidies |
| Mihara City, Hiroshima; former Kui-Minami Elementary School | Certified childcare centre (kodomoen) | 1,570.92m² | About ¥323 million in total | Municipality about ¥318 million; subsidies about ¥5 million |
| Nagaoka City, Niigata; former Shimada Elementary School | Disability welfare service establishment | 2,973.68m² | About ¥235 million in total | Operator about ¥180 million; subsidies about ¥55 million |
| Yokkaichi City, Mie; former Higashi-Kyohoku Elementary School | Child-rearing support complex | About 6,315m² | About ¥1 billion in total | Municipality about ¥990 million; subsidies about ¥10 million |
Even among disability welfare uses, the welfare-oriented farming facility in Miharu Town, Fukushima (1,344.52m²) cost about ¥4 million in total, while the disability welfare service establishment in Nagaoka City, Niigata (2,973.68m²) cost about ¥235 million. The case collection notes that in the Miharu Town case, the departments mainly responsible for the Building Standards Act and the Fire Service Act were also consulted, and the renovation work needed for the change from school use was explained to the operator in advance so that the operator could picture the renovation costs.
To find comparable cases, compare the construction year, renovation cost and subsidies used in the "basic facility information" of each case in the collection.
Five Cost-Reduction Strategies
Building survey, phased renovation, use selection, reuse of existing equipment, and subsidy timing
Strategy 1: Preliminary Building Survey
Strategy 2: Phased Renovation
Strategy 3: Use-Type Optimization
Strategy 4: Reuse Existing Equipment and Fixtures
Strategy 5: Match Subsidy Timing to the Construction Schedule
Subsidy Combination Scenarios
What a social welfare corporation developing a facility and a municipality renovating the building each end up paying
A Social Welfare Corporation Developing a Disability Welfare Service Establishment
Facilities eligible for the social welfare facility development subsidy include disability welfare service establishments and similar under Article 5 of the Act on Comprehensive Support for Persons with Disabilities. When a social welfare corporation or similar body develops a facility, the national government covers one half of the development cost in principle, and the prefecture (including designated and core cities) covers one quarter for the facility operator. The remaining quarter falls to the social welfare corporation or similar body.Assumptions (figures set by this article):
- Used floor area: 700 m²
- Total renovation cost: ¥50 million
- Intended use: Type-B continuous employment support (disability welfare service establishment)
- The full renovation cost is eligible and the application is approved
| Who Pays | Amount | Share |
|---|---|---|
| National government (Social Welfare Facility Development Subsidy) | ¥25 million | 1/2 |
| Prefecture (including designated and core cities) | ¥12.5 million | 1/4 |
| Social welfare corporation or similar (operator) | ¥12.5 million | 1/4 |
The one-quarter share assumes the full renovation cost is eligible. In the case collection's Nagaoka City example, the Social Welfare Facility Development Subsidy (MHLW) covered about ¥55 million of the roughly ¥235 million total renovation cost, and the operator paid about ¥180 million. Check which costs are eligible and whether you are likely to be selected against that year's rules and with the prefecture (including designated and core cities).
Whether another national subsidy can be stacked on the same cost is set program by program. To combine programs, split the costs by facility or item and check that each part fits the eligible costs in each program's rules.
A Municipality Renovating the Building for a Private Operator
Consider a municipality renovating a closed school for education or community use (a free school and community space, for example) and leasing it to an operator.
The Regional Future Promotion type of the Regional Future Grant broadly supports local governments' own initiatives. It covers non-capital projects and hub facility projects, and the subsidy rate is 1/2. A local government seeking the grant draws up a regional revitalization plan describing the projects the grant will fund, and applies for its certification. Hub facility projects develop the facilities needed to carry out non-capital projects.Assumptions (figures set by this article):
- Used floor area: 400 m²
- Total renovation cost: ¥15 million
- The municipality renovates the building as a hub facility project in its regional revitalization plan, and the grant is awarded
| Who Pays | Amount | Share |
|---|---|---|
| National government (Regional Future Grant) | ¥7.5 million | 1/2 |
| Municipality | ¥7.5 million | 1/2 |
The municipality receives the grant; none of it goes to the private operator. What the operator pays depends on the rent and other terms of use agreed with the municipality.
Among the measures under the Act on Special Measures for Supporting the Sustainable Development of Depopulated Areas, 70% of principal and interest repayments on depopulation countermeasure bonds is covered through local allocation tax. A municipality in a depopulated area should check, against its sustainable development plan for depopulated areas and the bond procedures, whether these bonds can be used for its share.
For a complete guide to available subsidy programs, see "Subsidies for Closed School Reuse: All 6 Ministries Covered." For after-school day service conversion details, see "After-School Day Services × Closed Schools."
Six-Ministry Subsidy Guide for Closed School Reuse
National subsidy programs for closed school reuse, checked against MEXT's list as of April 2026 and each ministry's rules: subsidy rates, caps, who can apply, and what to check before combining them.
Abandoned School × Welfare Facility Revenue Model
Using Type B continuous employment support as the example: base fee tiers from June 2026, the rule on user wages, how to work out facility cost differences, and three cases.
What to do next
When developing a school reuse plan and renovation budget, check the following matters.
| # | What to check or consider | Responsible team or contact |
|---|---|---|
| 1 | Find operators interested in using the building. Ask about their intended uses and requirements, and use the responses to develop the reuse plan | Market sounding and local operators |
| 2 | Check the seismic assessment and asbestos survey results. If surveys have not been conducted, determine their scope and how to commission them | Facilities team |
| 3 | Estimate renovation costs from the survey results and compare them with demolition costs | Design office |
| 4 | Check the property disposal procedures. For subsidized school buildings, check MEXT approval or reporting requirements against the intended use and disposal restriction period | Board of education and MEXT |
| 5 | Explain the proposed reuse to alumni and community groups and hear their views before announcing the use | Alumni and neighbourhood associations |
Check operator interest and requirements before finalizing the use, and take prospective demand into account when developing the reuse plan.
References
Closed School Reuse Case Collection: Everyone's Closed School Project, Connecting to the Future — Ministry of Education, Culture, Sports, Science and Technology (March 2023)
Realizing the Reuse of a School Loved by Its Community through Cooperation with the City — Construction Research Institute (Kensetsu Bukka, October 2018) (2018)
Survey on the Utilization Status of Closed School Facilities (FY2024) — Ministry of Education, Culture, Sports, Science and Technology (March 2025)
Seismic Retrofitting of Housing and Buildings — Ministry of Land, Infrastructure, Transport and Tourism (2026)
Promoting Seismic Retrofitting of Buildings Subject to Mandatory Seismic Diagnosis — Ministry of Land, Infrastructure, Transport and Tourism (2018)
Development and Operation of Social Welfare Facilities — Ministry of Health, Labour and Welfare (2026)
On the Regional Future Grant — Cabinet Secretariat Regional Future Strategy Headquarters Secretariat and Cabinet Office Regional Revitalization Promotion Secretariat (April 2026)
Regional Future Grant System Rules — Cabinet Office and others (February 2026)
Overview of the Act on Special Measures for Supporting the Sustainable Development of Depopulated Areas — Ministry of Internal Affairs and Communications (2022)
Overview of Property Disposal Procedures for Public School Facility Subsidies — Ministry of Education, Culture, Sports, Science and Technology (2026)
