Repair Risk in Older Japanese Property: Reserve Funds and Owner Costs

This article is part of the Zagdim Japan property series. It covers repair risk in older Japanese condominiums and detached houses: how to tell from the documents whether the money set aside for repairs is enough, and what owners may have to pay on top when it is not. It is written for readers who already own, or are looking at, Japanese property with a higher building age.

To judge repair risk in an older condominium, look at three things first: what work the long-term repair plan (長期修繕計画) schedules, how much the repair reserve fund (修繕積立金, long-term repair fund) has actually accumulated, and the date on which the building obtained its building confirmation (建築確認). When the money falls short, the gap is made up by all owners: monthly amounts may be raised, a one-time special levy (一時金) may be collected, or the management association (管理組合, the body formed by all owners of a condominium) may borrow. Costs for shared parts are generally allocated by the share attached to your unit. As of September 2026, detached houses (一戸建て) have no such system, so the owner plans repairs alone, and a house that is left vacant and poorly managed may also draw guidance or a recommendation from the municipality.

Why Doesn’t the Monthly Amount Show Repair Risk?

The repair reserve figure in a property listing is what you pay each month now. It does not show whether the building has saved enough for the work coming next. The current amount may also not be the later amount: in the fiscal year 2023 Condominium General Survey (マンション総合調査), among the 1,522 management associations that answered this question, 47.1% used a graduated increase method (段階増額積立方式), in which the amount starts low and rises in steps.

Older condominiums add another layer. Ministry of Land, Infrastructure, Transport and Tourism (MLIT) guidelines explain that the higher the building age, the more repair reserve is needed, and that replacement cycles for items such as water supply and drainage pipes and window frames may fall outside the plan period and so may not appear in the plan. Whether you are thinking of buying a used condominium in Japan or already own a unit, these points need to be part of your assessment.

How Do You Read a Long-Term Repair Plan?

First check how long the plan covers and when it was last reviewed. Then look at which works are scheduled next and which major items are not included.

A long-term repair plan is a management association’s plan for future repair items, timing and costs. MLIT’s long-term repair plan preparation guidelines (長期修繕計画作成ガイドライン) recommend a plan period of 30 years or more that includes two large-scale repairs (大規模修繕工事), reviewed roughly every 5 years based on survey and diagnosis results, with the reserve fund reviewed at the same time. This guideline and the repair reserve guideline discussed below are MLIT guidelines, not laws; what counts is the long-term repair plan and bylaws of the specific building.

In the fiscal year 2023 Condominium General Survey (1,589 management associations responded; the number of answers differs by question), 88.4% had prepared a long-term repair plan. The most common plan period was “30 years or more” (72.7%), and the most common review timing was “regular review about every 5 years” (63.2%); 3.7% did no review.

How Often Does Large-Scale Repair Happen?

The guidelines explain that large-scale repairs such as exterior wall repainting and roof waterproofing generally come around every 12 to 15 years, depending on materials and the specification of the work.

In MLIT’s fiscal year 2021 survey of work cases (200 companies, 818 cases, excluding seismic retrofit work), the most common cycle was 13 years, and about 70% fell between 12 and 15 years. By round of work, the cycle was 15.6 years for the first, 14.0 for the second and 12.9 for the third, so the cycle gets shorter with each round. In the fiscal year 2023 Condominium General Survey, among large-scale repair items that had been carried out, exterior wall painting was the most common at 87.1%, followed by roof waterproofing at 75.0% and floor waterproofing of balconies and open corridors at 61.6%.

What Other Major Works Are There Besides Exterior Walls?

The guidelines list the following reference cycles. These are references, not legal cycles, and they do not mean the equipment can be used for that many years:

• Exterior wall painting: repainting at 12 to 15 years; repainting after removing the old coating at 24 to 30 years.
• Roof waterproofing: repair at 12 to 15 years; removal and redo at 24 to 30 years.
• Ironwork painting: 5 to 7 years.
• Water supply and drainage pipes: rehabilitation at 19 to 23 years (cleaning the inside of the pipe and then coating it, which is not replacement); replacement at 30 to 40 years.
• Elevators: repair at 12 to 15 years; replacement at 26 to 30 years.
• Mechanical parking: repair at 5 years; replacement at 18 to 22 years.

The guidelines also warn that even if the plan period is set at 30 years, replacement cycles for water supply and drainage pipes and for window frames and similar fittings may extend beyond it and so not be listed. When looking at an older condominium, it is worth confirming whether these major works have been done and whether they appear in the plan.

How Do You Check Whether the Reserve Fund Is Adequate?

Work out the average over the whole plan period for the building and compare it with the reference values in the MLIT guidelines. Then check the accumulation method and how far actual savings differ from the plan.

MLIT’s repair reserve guideline (マンションの修繕積立金に関するガイドライン, revised June 2024) calculates reference values from 366 long-term repair plan cases, mainly owner-occupied, residential-only condominiums. The amounts are averages over the whole plan period, expressed per month per square meter of exclusive floor area, and exclude mechanical parking:

“Two-thirds of cases” is the range left after excluding the highest and lowest one-sixth. The guideline explains that being outside the reference range does not mean the amount is immediately judged inappropriate.

How Do You Calculate the Figure for a Specific Building?

The guideline’s formula is: (reserve balance at the start of the plan + total reserve to be collected during the plan period + total amount transferred in from parking fees and similar) divided by the total exclusive floor area of the building, divided by the number of months in the plan period. All three amounts are recorded in the long-term repair plan.

When there is mechanical parking, an additional amount is added to the reference value; if the parking repair costs are covered by parking fees and accounted for separately, no addition is needed. As for how much each unit pays per month, the long-term repair plan preparation guidelines calculate it by dividing the cumulative estimated repair cost over the plan period by the number of months in the plan period, then multiplying by each unit’s share ratio.

**Example: the guideline’s model case**

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Take a condominium with 10 floors above ground and a total building floor area of 7,000 sq m, with a total exclusive area of 4,900 sq m (70 sq m per unit, 70 units) and a 30-year plan period. The three amounts total JPY 424,600,000, and 424,600,000 divided by 4,900 divided by 360 comes to about JPY 241.

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It falls in the group “under 20 floors, 5,000 to under 10,000 sq m,” with an average of JPY 252 and a range of JPY 170 to 320. If there were 30 mechanical parking spaces (three levels, two-level pit lift type), about JPY 36 is added, so the reference value becomes an average of JPY 288 and a range of JPY 206 to 356; JPY 241 is within the range either way.

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Converted to a 70 sq m unit, JPY 241 is about JPY 16,870 per month. This is a conversion estimate, useful only as an order of magnitude, and it is an average over the whole plan period, not the amount currently payable each month. This case is a fictional model in the guideline, not an actual condominium.

The Amount Is Low Now: Will It Go Up Later?

It may. There are two accumulation methods: the level method (均等積立方式), which saves the same amount each month, and the graduated increase method, which keeps the initial amount low and raises it in steps. The guideline considers the level method preferable, because there have been condominiums where owners could not agree when an increase was due, leaving savings short.

Under the graduated increase method, the guideline uses the monthly amount of the level method as a base amount, with the initial amount at least 0.6 times the base and the final amount not exceeding 1.1 times; but this does not limit large increases made when the plan is reviewed because construction costs have risen. The guideline also explains that as buildings age and owners grow older, the burden becomes harder to bear, so graduated increases should be completed early. Even under the level method, an increase may be needed after a review of the long-term repair plan.

In the 2023 survey (1,522 management associations answering this question), 47.1% used the graduated increase method and 40.5% the level method, and the more recently a condominium was completed, the higher the share using graduated increases. The most common way of deciding the reserve amount was “decided by the required amount calculated from the long-term repair plan,” at 78.4%.

What Signs Suggest the Fund May Be Short?

• Actual savings below the plan: in the 2023 survey, among the 1,402 management associations answering this question, 36.6% were in this position, and 11.7% were short by more than 20%.
• The plan has not been reviewed for a long time, or there is no plan: the guideline recommends review about every 5 years and resetting the reserve accordingly.
• A graduated increase where the planned rises are not yet complete: the current low amount is only one stage.
• In a year of large-scale repair, savings temporarily fall below the estimated cost of the work: the guideline explains that special levies, borrowing and similar measures are then needed.

When the Money Falls Short, What Extra Do Owners Pay?

All owners make up the gap. Under the repair reserve guideline, the methods include raising the monthly amount, collecting a special levy at the time of repairs, or borrowing from a financial institution; the long-term repair plan preparation guidelines also remind owners to watch for special levies and similar responses when disasters or accidents occur. Under the Act on Building Unit Ownership (建物の区分所有等に関する法律), costs for shared parts are borne according to ownership share unless the bylaws provide otherwise, and the share is in principle proportional to the exclusive floor area of your unit.

The repair reserve fund is used for work on shared parts; renovation costs inside your own unit are in principle outside what the fund covers and must be set aside separately.

For construction costs, MLIT’s fiscal year 2021 survey of work cases (200 companies, 818 cases) is a reference: the range with the highest share of cases for the work amount per unit was “JPY 1,000,000 to 1,250,000,” followed by “JPY 750,000 to 1,000,000” and “JPY 1,250,000 to 1,500,000.” This is not an average, it excludes common temporary costs and consumption tax, and it does not reflect later changes in construction costs.

What Happens to You When the Association Borrows for Repairs?

The Japan Housing Finance Agency (住宅金融支援機構) loan for repairs to shared parts of condominiums (マンションすまい・る融資) is borrowed by the management association, not by individual owners. According to the agency’s web pages as of September 2026, when the loan is guaranteed by the Condominium Management Center or the Housing Improvement Development Corporation, the conditions include:

• General meeting resolution: the association must resolve to carry out the work, to borrow from the agency (amount, term, expected interest rate), to repay from the repair reserve fund, and to commission the guarantee; a resolution on the purpose and amount is also required when a special levy is collected to make up own funds or the reserve is raised.
• Savings status: the repair reserve must be accounted for separately from management fees, held in the name of the association or its manager, accumulated on a time deposit of one year or more, and the arrears ratio must in principle be within 10%.
• Repayment ceiling: the monthly repayment must be within 80% of the monthly repair reserve collected; where the arrears ratio is over 10% and within 20%, it must be within 60%, with other conditions.
• Amount and term: a minimum of JPY 1,000,000, up to the cost of the eligible work; a repayment term of 1 to 10 years, up to 20 years for work such as seismic retrofit, water supply and drainage pipe replacement and elevator replacement, and up to 35 years for some work where a management plan certification has been obtained.
• Exclusive areas: the cost of work in exclusive areas is in principle not eligible.

The association repays the loan from the repair reserve fund; the reserve may be raised in order to repay, and that requires a general meeting resolution.

How much more you actually pay depends on the building’s long-term repair plan, its actual savings and your unit’s share, and there is no single general figure.

**Example: an overseas owner of an older condominium unit**

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An owner of an older condominium unit in Japan receives a notice of a general meeting: the management association plans to borrow from the Japan Housing Finance Agency to replace the water supply and drainage pipes and to raise the repair reserve.

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Under the agency’s conditions as of September 2026, the borrower is the association; both the borrowing and the raised amount need a general meeting resolution; the monthly repayment must be within 80% of the monthly repair reserve; and the repayment term for pipe replacement can be up to 20 years. Renovation inside the owner’s unit is in principle not covered by the loan. What the owner should do is read the raised amount and repayment term in the proposal, decide whether to vote in writing or through a proxy, and estimate separately the cost of the interior work.

I Live Overseas: How Do Votes on Repairs and Reconstruction Affect Me?

Large-scale repairs are decided by a majority of those attending; decisions such as reconstruction look at all owners.

From April 1, 2026, apart from resolutions that dispose of unit ownership such as reconstruction, general meeting resolutions are decided by a majority of the owners attending and of their voting rights, and the bylaws can set otherwise; owners who vote in writing or by proxy count as attending. The Ministry of Justice’s example is a resolution on large-scale repairs such as exterior walls and roof waterproofing. Changes to shared parts are in principle a special resolution (a majority of owners and voting rights present, with at least 3/4 of those present and their voting rights in favor); for changes needed to remove defects in shared parts (for example, insufficient seismic resistance or corroded water supply and drainage pipes), the proportion of those present is reduced to 2/3. An owner who neither attends nor votes in writing or by proxy is not counted in these resolutions.

Reconstruction, and the new regeneration resolutions such as renovating, selling or demolishing a whole building, in principle need at least 4/5 of owners and voting rights, reduced to 3/4 where there are objective grounds such as insufficient seismic resistance. For the two involving a sale, the value of the site-use right shares must also reach the same ratio, and there is a separate 2/3 rule for buildings damaged by disasters designated by government ordinance. A meeting to convene a reconstruction resolution must be notified at least 2 months before it is held, with the content of the repair plan and the amount of repair reserve accumulated.

An owner who cannot be reached has no voting right at the meeting only if, after necessary investigation, their whereabouts remain unknown and a court has ruled that they are of unknown whereabouts; being out of contact does not automatically cost you your vote. Notices go to the address you have reported to the manager, and if none was reported, notice sent to your unit is deemed delivered. For how to report an overseas address and appoint a domestic representative (国内管理人), see the main Zagdim guide.

What Else Should You Check for an Old-Standard Seismic Condominium?

As of the end of 2025, there were about 1.588 million sold-unit condominium units aged 40 years or more (MLIT’s estimate of the stock based on building start statistics and other sources); MLIT estimates this will rise to about 2.0 times in 10 years and about 3.2 times in 20 years.

Seismic standards depend on the date of building confirmation: a building that obtained its building confirmation on or before May 31, 1981 (that is, before June 1) was built to the old seismic standard (旧耐震基準), and MLIT explains that many such buildings have insufficient seismic resistance. These buildings cannot be checked against the new seismic standard (新耐震基準) using existing structural calculation documents. In the fiscal year 2023 Condominium General Survey (1,589 management associations responded; the number of answers differs by question), 31.6% of condominiums built to the old seismic standard had undergone a seismic diagnosis. When looking at an old-standard condominium, first ask whether a seismic diagnosis has been done and whether there is a retrofit plan; the fiscal year 2021 work survey mentioned above excludes seismic retrofit work.

Will an Old Condominium Be Rebuilt?

It should not be assumed. As of March 31, 2025, cumulative condominium reconstructions nationwide numbered 323 (about 26,000 units), not including reconstructions of condominiums damaged in the Hanshin-Awaji, Great East Japan and Kumamoto earthquakes (115 in total); cumulative condominium site sales (マンション敷地売却) and similar totaled 17 (about 1,300 units).

From April 1, 2026, the former Act on Facilitation of Reconstruction of Condominiums was renamed the Act on Facilitation of Redevelopment and Similar of Condominiums (マンションの再生等の円滑化に関する法律). A condominium’s manager or similar party can apply to the specified administrative agency (特定行政庁) for a “certification as requiring demolition” (要除却等認定): the agency is to certify when the condominium does not meet seismic or fire safety standards; when peeling of exterior walls or similar poses a danger to the surroundings; when deterioration of water supply, drainage and other piping poses a markedly harmful sanitation risk (limited to cases where renovation is markedly difficult); or when it does not meet accessibility standards. Owners of a certified condominium must make efforts to carry out demolition and similar work.

For reconstruction or renovation of a certified condominium whose site area is at or above a size set by government ordinance, the floor area ratio or the height of parts of the building can be relaxed within the permitted range with permission from the specified administrative agency. This requires permission; it is not an automatic relaxation.

Is Management Plan Certification a Useful Signal?

It can serve as one signal, but not having certification does not mean poor management.

Condominium management plan certification (管理計画認定) has been available since fiscal year 2022, applied for voluntarily by the management association to the local government (cities and special wards that have prepared a condominium management optimization promotion plan; prefectures for town and village areas), and is renewed every 5 years. The criteria include, for example, holding a general meeting at least once a year, having management bylaws, accounting separately for management fees and repair reserve, a long-term repair plan of 30 years or more with at least two large-scale repairs in the remaining period, a repair reserve average that is not markedly low, and having rosters of association members and residents; local governments may set additional criteria.

Benefits of certification include a reduced interest rate on the Japan Housing Finance Agency’s Flat 35 loan and a reduction in fixed asset tax when large-scale repairs that help extend the building’s life are carried out; the requirements follow the current official rules. The 35-year repayment term for the repair loan above also has certification as one of its conditions. MLIT’s target is to raise the share of certified condominiums from about 3% in 2024 to 20%.

Published amendments that take effect on April 1, 2027 and had not yet taken effect as of September 2026 allow condominium sellers to apply for certification at the time of sale and hand it over to the management association, and create a certification display system.

What Responsibilities Do Owners Have for a Detached or Vacant House?

As of September 2026, detached houses have no statutory system like a management association or repair reserve fund, and the owner plans the cost and timing of repairs. The reference values and cycles above are for condominiums and should not be applied directly to detached houses.

Article 717 of the Civil Code provides that when a defect in the installation or maintenance of a structure on land (土地の工作物) causes damage to another person, the possessor compensates; if the possessor has taken the care needed to prevent the damage, the owner compensates. When a house is rented out, the possessor may be the tenant; an owner abroad may also be liable.

A house that has not been used for a long time is subject to the Act on Special Measures concerning Vacant Houses (空家等対策の推進に関する特別措置法). “Vacant houses and similar” (空家等) means buildings that are regularly not lived in or otherwise used, together with their sites. Owners must make efforts to manage them properly so that they do not harm the surrounding living environment; this is an obligation to make efforts. When management is inadequate, the municipality has these measures:

• Inadequately managed vacant houses (管理不全空家等, from December 13, 2023): where leaving the house may make it a specified vacant house, the mayor may give guidance; if there is no improvement after guidance and the house is highly likely to become a specified vacant house, the mayor may recommend specific measures such as repairs.
• Specified vacant houses (特定空家等): where leaving the house may lead to a markedly dangerous condition such as collapse, markedly harm sanitation or markedly harm the landscape, the mayor may advise, give guidance and recommend; if the owner does not take the recommended measures without justifiable reason and it is especially necessary, the mayor may order them, and may carry out the work by proxy execution if the order is not complied with.
• Tax impact: after a recommendation, the land no longer qualifies for the fixed asset tax (固定資産税) special treatment for residential land (the taxable base is 1/6 of the value for the portion up to 200 sq m and 1/3 for the rest).

If you are overseas and the house will be vacant for a long time, agree in advance who will check on it regularly and who will arrange necessary repairs.

Which Claims Deserve a Second Look?

• “The repair reserve is low, so holding costs are low.” It may be the initial amount of a graduated increase, or savings may already be below the plan.
• “The increase will not exceed 1.1 times.” The 0.6 and 1.1 multiples are guideline considerations, not legal caps, and they do not limit large increases when construction costs rise.
• “It is within the reference range, so there is nothing to worry about.” The reference values are averages over the whole plan period; they must still be compared with the building’s plan and actual savings.
• “Large-scale repair was just finished, so nothing is coming.” Replacement cycles for water supply and drainage pipes and for window frames and similar fittings may lie outside the 30-year plan period.
• “An old condominium will be rebuilt later.” Reconstruction needs at least 4/5 (or 3/4) of all owners and voting rights, and a floor area ratio relaxation needs permission.

How Should You Decide What to Do Next?

• You can go on evaluating: you can get the long-term repair plan, the year of the latest review and the actual savings, and the plan covers the major works ahead. Include the planned increases in your own holding costs.
• Stop and fill in the information first: the plan has not been reviewed for a long time, savings are clearly below the plan, or the association is discussing borrowing or a special levy. First obtain the general meeting materials and proposals and work out how much more your unit may have to pay.
• When buying a used condominium: confirm whether the unit has any unpaid amounts. Under the Act on Building Unit Ownership, claims arising from the bylaws or general meeting resolutions can be pursued against the new owner who takes over the unit; MLIT’s standard management bylaws (a model, not law) state expressly that management fees and similar are claims of this type, and what counts is that condominium’s own bylaws.
• When you need the full picture: for the management association, the person handling matters on your behalf in Japan, rental and tax arrangements as a whole, see the main Zagdim guide “How Do Condominium Associations, Rental Management and Repair Costs Work for Foreign Owners of Japanese Property?”

Older Japanese Property Repairs FAQ

Will Owners of an Older Japanese Condominium Be Asked to Pay a Large Lump Sum for Repairs?

It is possible. When savings are not enough, the management association may collect a special levy at the time of repairs, raise the monthly amount or borrow; costs for shared parts are generally borne by ownership share. How much you pay depends on the gap between the building’s work and its savings, and what counts is that condominium’s resolutions.

If the Repair Reserve Is Below MLIT’s Reference Value, Does the Condominium Have a Problem?

Not necessarily. The reference value is the average over the whole plan period listed in the guideline, not a legal standard, and the guideline explains that being outside the range does not mean immediately judged inappropriate. Compare it further with the building’s long-term repair plan, the accumulation method and the gap between actual savings and the plan.

Do You Also Pay a Repair Reserve When Buying a Detached House in Japan?

As of September 2026, detached houses have no statutory system like a management association or repair reserve fund, and the owner plans repairs. When a house is vacant for a long time, owners must make efforts to manage it properly; after a recommendation for inadequate management, the land no longer qualifies for the fixed asset tax special treatment for residential land.

Glossary

• Long-term repair plan (長期修繕計画): A plan of repair items, timing and costs for a condominium for 30 years or more ahead; the guidelines recommend review about every 5 years.
• Large-scale repair (大規模修繕工事): Large planned repair work on the whole building or several parts, for example full exterior wall painting.
• Repair reserve fund (修繕積立金): A long-term repair fund accumulated monthly for future repairs to shared parts.
• Level method (均等積立方式): Spreading the repair costs over the plan period evenly across the months of saving.
• Graduated increase method (段階増額積立方式): A saving method with a lower initial amount that is raised in steps.
• Special levy (一時金): A one-time charge collected from owners at the time of repairs or a disaster.
• Building confirmation (建築確認): The legal confirmation of a building’s design; this date determines whether the old or new seismic standard applies.
• Certification as requiring demolition (要除却等認定): A certification by the specified administrative agency for condominiums that do not meet seismic and other standards and need demolition or work to restore the main structure.
• Management plan certification (管理計画認定): A condominium management certification applied for voluntarily by the association to the local government and renewed every 5 years.
• Specified vacant house (特定空家等): A vacant house that may collapse or is otherwise markedly dangerous or harmful, for which the municipality can give guidance, recommendations and orders in sequence.

About This Data

The information in this article is current as of September 30, 2026, and is based on Japanese laws and official materials from MLIT, the Ministry of Justice and the Japan Housing Finance Agency.

“As of September 2026, detached houses have no statutory system like a management association or repair reserve fund” is inferred from the scope of application of the Act on Building Unit Ownership and the two condominium repair guidelines; no official document says it in a single sentence, and it does not exclude other individual arrangements such as shared private roads. The text of Civil Code Article 717 uses the term “structure on land” and does not say “building” directly; that the possessor may be the tenant when a house is rented out and that an owner abroad may also be liable is an explanation based on the text, and case law has not been reviewed.

The repair reserve guideline, the long-term repair plan preparation guidelines and the standard management bylaws are all MLIT guidelines or models, not laws; the reference values, cycles and the 0.6 and 1.1 multiples are guideline considerations. What counts is each condominium’s bylaws and long-term repair plan. The guideline’s model case and the 70 sq m conversion are a fictional model and a conversion estimate in this article, and do not represent an actual condominium.

The surveys cited each have a limited scope: the fiscal year 2023 Condominium General Survey covered 4,270 management associations with 1,589 responses (about 37%), the number of answers differs by question (1,522 for the accumulation method, 1,402 for the savings gap); the fiscal year 2021 survey of large-scale repair work covers 818 cases from 200 construction companies, excludes seismic retrofit work, and its work amounts exclude common temporary costs and consumption tax; the number of units aged 40 years or more is MLIT’s estimate from statistics. The seismic and other standards on which the reduction of the reconstruction threshold to 3/4 and the certification as requiring demolition rest are set by the Minister of Justice and the Minister of Land, Infrastructure, Transport and Tourism respectively, and their specific content is not covered here.

Still changing: the expansion of condominium management plan certification takes effect only on April 1, 2027; the Japan Housing Finance Agency’s loan conditions are taken from its web pages of September 30, 2026, the interest rate is not covered here, and the conditions may change at any time.

Have a question about this guide? Leave a comment below, or ask Zagdim directly.

Sources

• 国土交通省－マンションの修繕積立金に関するガイドライン
• 国土交通省－長期修繕計画標準様式・長期修繕計画作成ガイドライン・同コメント
• 国土交通省－令和３年度マンション大規模修繕工事に関する実態調査について（概要）
• 国土交通省－令和５年度マンション総合調査結果〔概要編〕
• 国土交通省－令和5年度マンション総合調査結果からみたマンションの居住と管理の現状
• 国土交通省－令和5年度マンション総合調査の結果について（資料4）
• 住宅金融支援機構－マンションすまい・る融資（管理組合申込みの場合）
• 住宅金融支援機構－マンションすまい・る融資 ご利用条件
• e-Gov法令検索－建物の区分所有等に関する法律
• 法務省民事局－区分所有法・被災区分所有法の改正について
• 国土交通省－令和７年改正マンション標準管理規約（単棟型）及び同コメント
• 国土交通省－築４０年以上の分譲マンション数の推移（2025年末現在）
• 国土交通省－マンションの耐震性等についてのＱ＆Ａ
• 国土交通省－住宅・建築物の耐震化について
• e-Gov法令検索－マンションの再生等の円滑化に関する法律
• 国土交通省－マンション建替え等の実施状況（2025年3月31日現在）
• e-Gov法令検索－マンションの管理の適正化の推進に関する法律
• 国土交通省－マンション管理計画認定制度
• 国土交通省住宅局－施行規則等改正省令について（概要）
• 国土交通省－マンション関係法改正の概要（令和７年９月）
• e-Gov法令検索－民法
• e-Gov法令検索－空家等対策の推進に関する特別措置法
• 国土交通省－空家等対策の推進に関する特別措置法の一部を改正する法律について
• e-Gov法令検索－地方税法

Important Notice

This article is a general information summary and is not individual legal, tax, financial or real estate advice. The information is current as of September 30, 2026. Rules, guidelines and survey figures may be updated; rely on the current announcements of the competent Japanese authorities and on your own condominium’s bylaws and long-term repair plan, and consult a qualified professional where needed.