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How to Avoid Mistakes with a Natural Material Home: Costs, Maintenance, and Drawbacks

This article explains the advantages and drawbacks of natural material homes and how to avoid costly mistakes. It covers budgeting, maintenance, and how to choose the right builder so you can plan a home with greater confidence.

Last updated: About 2 min read

Homes built with natural materials are drawing attention because of their health and environmental benefits. However, if you focus only on the advantages, you may end up regretting the decision after moving in. In this article, we explain what a natural-material home is, the common pitfalls, and how to avoid them.

What Is a Natural-Material Home? Definition and Materials Used

A natural-material home is a house built primarily with naturally derived materials such as solid wood, plaster, and diatomaceous earth. There is no strict definition such as “what percentage or more,” and even if some industrial materials are used, the home is generally described this way as long as the main building materials are natural.

The biggest reason these homes attract attention is their health benefits. Chemicals contained in the paints and adhesives used in conventional building materials can contribute to sick house syndrome. Natural-material homes can significantly reduce this risk.

What Are the Common Pitfalls of Natural-Material Homes? Two Perspectives: Cost and Maintenance

【Cost】Construction Costs Are Higher Than for Standard Homes

There are two main reasons why the construction cost of a natural-material home tends to be higher.

  • The materials themselves are expensive:Solid wood, plaster, and diatomaceous earth cost more per unit than industrial building materials
  • Skilled craftspeople are required:Working with natural materials demands experience and technical expertise

On the other hand, natural-material homes often have a long service life, which can make them cost-effective over the long term. It is important not to judge based only on the initial cost, but to compare lifecycle costs as well.

【Maintenance】Aging Changes and Regular Care Are Necessary

One of the appeals of natural materials is the way they change over time, but that also means they require maintenance.

  • Diatomaceous earth walls:They offer excellent moisture control, deodorizing performance, and fire resistance, but they are also more prone to stains and cracking
  • Solid wood floors:They provide good humidity control and insulation, but they are vulnerable to water and dirt and scratch easily

These materials are well suited to people who can continue living with the mindset of “enjoying the changes that come with age.”

Key Points for Avoiding Mistakes With a Natural-Material Home

Understand the Characteristics of the Materials Thoroughly in Advance

The most effective way to avoid mistakes is to understand each material’s characteristics, how it changes over time, and how it should be maintained before moving in. We recommend visiting showrooms and requesting samples so you can inspect the actual materials.

Choose a Reliable Contractor

Natural materials are difficult to handle, and construction quality has a major impact on the final result. By choosing a contractor with strong after-sales support, you can also receive prompt assistance if problems arise after moving in.

Frequently Asked Questions (FAQ)

How much more expensive is a natural-material home?

In many cases, it costs about 10% to 30% more than a standard home. The amount varies depending on the types of materials used, the area involved, and the skill of the craftspeople.

Are diatomaceous earth walls prone to cracking?

Cracks can occur due to poor substrate work or drying shrinkage. The contractor’s experience and the quality of the substrate preparation are critical.

How should solid wood floors be maintained?

The basics are regular oil application (once or twice a year) and avoiding wet mopping (a tightly wrung cloth is acceptable). Scratches can be repaired with sandpaper.

How can you build a home without concerns about sick house syndrome?

The basic measures are to choose F☆☆☆☆ (the highest rating) building materials and install a continuous ventilation system. Using natural materials as the primary materials can reduce the risk even further.

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