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Practical Guide to Used Condo Renovation Investment

As new condominiums become more expensive, used condo renovation investment is drawing attention. This practical guide explains why the strategy matters, with real project examples, common layout-change patterns, and planning tips for investors seeking stronger returns.

Last updated: About 2 min read

Average prices for newly built condominiums have surged to levels comparable to the bubble era, raising the barrier to entry for real estate investment. In that environment,used condominium renovation is drawing attention as an investment approach.This article explains the economic advantages of investing in used condominium renovations, representative project examples, and practical planning tips.

Why is used condominium renovation investment advantageous?

The average price of a newly built condominium is about JPY 62.84 million, a level comparable to the bubble era, whilethe average closing price of a used condominium is about JPY 34.79 million.Even after adding renovation costs of roughly JPY 10 million, the property can still be acquired for about two-thirds the cost of a new unit, helping investors control upfront capital while improving asset value.

In addition, many used condominiums in central urban areas offer excellent transport access, andtheir asset value tends to hold up even after renovation, which is a meaningful advantage.From a depreciation perspective, used properties also have shorter remaining useful lives, which can increase short-term tax benefits.

What are some renovation examples for used condominiums?

Let us look at representative examples of renovations that can improve occupancy and profitability.

Renovation without changing the number of rooms (3LDK→3LDK)

In areas with strong family demand, an effective approach is to refresh the design and equipment without changing the number of rooms.Properties that eliminate the dated feel of resale housing through carefully selected materials, such as solid walnut flooring and navy doors, have achieved high occupancy rates.

Skeleton renovation (retaining only the structural frame)

For older properties, a skeleton renovation that removes all ceilings, floors, and walls can be highly effective.Intentionally leaving the ceiling open creates a greater sense of openness and can make even compact urban units feel more spacious.

Reducing the number of rooms to create openness

This method integrates an older, tightly partitioned layout by removing walls, balancing airflow with a stronger sense of shared living space.It is particularly effective for family-oriented properties, where a larger living area tends to increase tenant satisfaction.

Layout changes designed around movement flow

Changing an isolated kitchen into an open-facing layout and integrating it with the living area improves household communication flow.Because it improves household efficiency, it also strengthens appeal to family households.

What are the keys to success in used condominium renovation investment?

Decide on the renovation plan first, then choose the property

If the ideal layout is not determined in advance, plumbing routes and slope constraints may limit where the kitchen and bathroom can be placed.Selecting the property based on the plan, rather than forcing the plan to fit the property, is the shortest path to a high-quality renovation.

Work backward from the local area to define the target tenant

When operating the unit as an investment property,analyzing the surrounding household mix, income segments, and competing properties, then building a renovation plan aligned with demand, is the key to maximizing returns.It is important to respond not only to the owner’s aesthetic preferences but also to actual market demand.

For rental management after renovation, please also refer toleasing operations strategy.

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Frequently Asked Questions (FAQ)

Q. Is used condominium renovation investment more advantageous than buying new?

It is advantageous because acquisition costs can be held to roughly two-thirds of a new unit, location quality can be preserved, and depreciation benefits are often greater. That said, verifying the building structure and management condition is essential.

Q. What is a typical renovation budget?

For an apartment building, a rough benchmark is JPY 5 million to JPY 15 million per unit. Costs will be higher if skeleton work is involved.

Q. Which layout tends to produce the highest returns in used condominium renovation?

It depends on the area, but a compact 1LDK tends to perform well in markets for single occupants, while a 3LDK with improved movement flow tends to achieve high occupancy in family-oriented areas.

Q. What is a skeleton renovation?

It is a renovation method that leaves only the building’s structural elements, such as beams, columns, and structural walls, while removing the entire interior and rebuilding it from scratch. It offers a high degree of flexibility, but costs are also higher.

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