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Why You Should Run a Mortgage Simulation Before Buying a Used Condo

This article explains the mortgage structure for buying a used condo, the earthquake-resistance standards required for Flat 35, the conditions for mortgage tax deductions, and the practical benefits of running a loan simulation before purchase.

Last updated: About 2 min read

More people are considering the purchase of a used condominium. Can you obtain a home loan for it in the same way as for a newly built property, and is there real value in running a simulation in advance? This article explains how home loans work when buying a used condominium and the key points for using simulations effectively.

Can you get a home loan for a used condominium?

In conclusion, yes, you can generally obtain a home loan for a used condominium in much the same way as for a newly built property. Financial institutions review applications without fundamentally distinguishing between new and pre-owned properties. However, there are several points to keep in mind.

Earthquake-resistance standards when using フラット35

フラット35 satisfies the earthquake-resistance assessment standards only for used condominiums built on or after June 1, 1981. Properties built earlier than that do not meet the applicable earthquake-resistance standards, so フラット35 cannot be used. With private financial institutions, however, you can generally still apply for screening without issue.

If the building is 25 years old or less, you may also qualify for the home loan tax deduction

Even for a used condominium, you can use the home loan tax deduction if the following conditions are met.

  • The building is 25 years old or less
  • The floor area is 50㎡ or more, and at least half is used for residential purposes
  • If the building is more than 25 years old, you must obtain a certificate of compliance with earthquake-resistance standards

Limitations based on repayment capacity and collateral valuation

Because used condominiums are often assigned a lower collateral value than newly built properties, the amount you can borrow may be limited. Depending on the building age, the repayment term may also be set shorter, so careful review is necessary.

What are the benefits of running a loan simulation?

Running a simulation in advance can significantly improve the accuracy of your decisions, from property selection through to repayment planning.

You can grasp rough estimates and use them to choose a property

If you understand the amount you can borrow, your monthly repayments, and the total repayment amount, you can avoid wasting time considering properties that exceed your budget. If you include renovation and remodeling costs in the simulation as well, you can build a more realistic repayment plan.

You can calculate the loan amount backward from an affordable monthly repayment

What matters is not "how much you can borrow" but "how much you can repay." A safer approach is to calculate a comfortable repayment amount based on your current income, living expenses, and expected future spending, then work backward from there to estimate the loan amount.

Why you should understand ancillary costs before running a simulation

Ancillary costs when purchasing a used condominium are typically about 10% of the property price. These include registration fees, stamp duty, administrative fees, insurance premiums, and various taxes. If you make a plan without incorporating these costs into the simulation, you risk falling short of funds.

Frequently Asked Questions (FAQ)

Q. Can you get a home loan for a used condominium?

Yes, you can. The screening process is generally the same as for a newly built property. However, フラット35 is limited to properties built in June 1981 or later.

Q. Can the home loan tax deduction be used for used properties?

Yes, if the building is 25 years old or less. Even if it is more than 25 years old, you may still qualify by obtaining a certificate of compliance with earthquake-resistance standards.

Q. Where can I run a loan simulation?

You can use free simulation tools on the websites of financial institutions and on the official フラット35 website. We recommend comparing results across multiple financial institutions.

Q. Can ancillary costs be included in the loan?

Depending on the financial institution, an "ancillary cost loan" may be available to include these costs in the financing. However, because this increases the total borrowing amount, it should be considered carefully.

Q. What should I watch for in the loan screening for a used condominium?

You should be aware that collateral valuation is often lower than for a newly built property and that the repayment term may be set shorter depending on the building age.

Daisuke Inazawa, President & CEO of INA&Associates Inc.

Author

President & CEOINA&Associates Inc.

President & CEO of INA&Associates Inc. Leads real estate brokerage, rental leasing, and property management across Greater Tokyo and the Kansai region. Specialises in income-property investment strategy and advisory for ultra-high-net-worth individuals.

Daisuke Inazawa is the President and CEO of INA&Associates Inc., a Japanese real estate firm headquartered in Osaka with a Tokyo branch. He leads the company's three core businesses — real estate sales brokerage, rental leasing, and property management — across the Greater Tokyo Area and the Kansai region.

His areas of expertise include investment strategy for income-generating real estate, profitability optimisation of rental operations, real estate advisory for ultra-high-net-worth individuals (UHNWIs) and institutional investors, and cross-border real estate investment. He provides data-driven, long-horizon advisory to investors in Japan and overseas.

Under the management philosophy "a company's most important asset is its people," he positions INA&Associates as a "people-investment company" and is committed to sustainable corporate-value creation through talent development. He also writes and speaks publicly on leadership and organisational culture in times of change.

He has passed eleven Japanese professional qualification examinations: Licensed Real Estate Broker (Takken), Certified Real Estate Consulting Master, Licensed Condominium Manager, Licensed Building Management Supervisor, Certified Rental Housing Management Professional, Gyōseishoshi Lawyer (administrative scrivener), Certified Personal Information Protection Officer, Class-A Fire Prevention Manager, Certified Auctioned Real Estate Specialist, Certified Condominium Maintenance Engineer, and Licensed Moneylending Operations Supervisor.

  • Licensed Real Estate Broker (Takken)
  • Certified Real Estate Consulting Master
  • Licensed Condominium Manager
  • Licensed Building Management Supervisor
  • Certified Rental Housing Management Professional
  • Gyōseishoshi Lawyer (Administrative Scrivener)
  • Certified Personal Information Protection Officer
  • Class-A Fire Prevention Manager
  • Certified Auctioned Real Estate Specialist
  • Certified Condominium Maintenance Engineer
  • Licensed Moneylending Operations Supervisor