Why Old Homes Are Expensive in Silicon Valley: Key Differences Between Japanese and U.S. Real Estate
- Fumika Takazawa
- May 2
- 4 min read
Updated: Jul 10
Why Old Homes Are Expensive in Silicon Valley: Key Differences Between Japanese and U.S. Real Estate
One of the most common questions I hear from Japanese buyers who are beginning their home search in the United States is:
"Why are these old homes so expensive?"
"In Japan, wouldn't a 40- or 50-year-old house usually be torn down and rebuilt?"
The answer lies in one of the biggest differences between the Japanese and American housing markets.
Understanding these differences can make buying a home in the United States—especially in Silicon Valley—much less confusing.
Why Are Old Homes So Expensive in Silicon Valley?
Existing Homes Are the Norm in the U.S.
While newly built homes are often highly desirable in Japan, most homebuyers in the United States purchase existing homes rather than new construction.
This is especially true in Silicon Valley, where available land is limited and demand remains high.
Land Value Drives Home Prices
One of the main reasons why old homes are expensive in Silicon Valley is that a home's value is often determined more by the land than by the structure itself.
Factors that significantly influence home values include:
School districts
Commute convenience
Neighborhood quality
Future growth potential
Scarcity of available land
As a result, even homes that are more than 50 years old can sell for several million dollars if they are located in highly desirable areas.
Americans Renovate Instead of Rebuilding
Another major difference is that homeowners in the United States often renovate and update their homes over time.
Common improvements include:
Kitchen remodels
Bathroom renovations
Flooring updates
Roof replacement
Plumbing upgrades
Exterior improvements
Because of this, buyers typically focus less on the age of a home and more on its current condition and maintenance history.
A well-maintained 50-year-old home may be viewed more favorably than a newer home that has been neglected.
Land and Building Value: A Different Perspective
In Japan, buildings often depreciate as they age, and much of a property's value may eventually come from the land alone.
In the United States, the general perspective is slightly different:
Buildings experience wear and tear over time.
Land can appreciate in value when demand increases.
This distinction helps explain why old homes are expensive in Silicon Valley.
Why Silicon Valley Land Values Remain Strong
Several factors have supported long-term property values in the region:
Limited housing supply
Concentration of major technology companies
Continued demand from high-income professionals
Strong local economies and job growth
Of course, real estate markets are affected by economic conditions, mortgage rates, and other factors, so prices can rise and fall in the short term.
However, many desirable Bay Area communities have historically maintained or increased their value over longer periods.
Why Do Americans Move More Frequently?
In Japan, many people purchase what they consider their "forever home."
In the United States, homeowners often move based on changing life circumstances.
A typical progression may look like this:
First Home Purchase
Condominium
Townhome
Growing Family
Three- to five-bedroom single-family home
Empty Nest Years
Smaller home
Downsizing for convenience
Retirement
Low-maintenance home
Condominium or active adult community
Because of this, many Americans view a home as the right fit for their current stage of life rather than a place they must live in forever.
Homes as Both Housing and an Asset
A home's primary purpose is to provide a comfortable place for a family to live.
At the same time, many Americans also view homeownership as a way to build wealth over time.
The concept of "living in your investment" is deeply embedded in American homeownership culture.
This differs from many parts of Japan, where home values often decline as buildings age and where new construction remains highly preferred.
As a result, the overall mindset surrounding homeownership can be very different between the two countries.
How Much Have Bay Area Home Values Increased?
While no future appreciation can ever be guaranteed, long-term data shows that the Bay Area has been one of the strongest-performing housing markets in the United States.
According to historical data from the Federal Housing Finance Agency (FHFA), approximate cumulative home price appreciation since 1991 has been:
Region | Approximate Home Price Appreciation Since 1991* |
Santa Clara County (San Jose-Sunnyvale-Santa Clara) | +448% |
San Mateo County (San Francisco-San Mateo-Redwood City) | +398% |
Alameda County (Oakland-Fremont-Berkeley) | +350% |
Based on FHFA House Price Index data. These figures represent regional averages and do not guarantee future appreciation of any individual property.
Although past performance does not predict future results, these figures help illustrate why many buyers view Bay Area real estate as a long-term asset.
Final Thoughts
Understanding why old homes are expensive in Silicon Valley begins with recognizing the differences between Japanese and American real estate markets.
Japan
New construction is often preferred.
Building values frequently decline with age.
Many buyers purchase a home with the intention of living there long term.
United States (Especially the Bay Area)
Existing homes make up the majority of sales.
Land value plays a major role in pricing.
Homeowners often renovate rather than rebuild.
Moving as life circumstances change is common.
Many buyers view homeownership as both a place to live and a long-term financial asset.
By understanding these differences, Japanese buyers can feel more confident navigating the U.S. housing market and making informed decisions about homeownership in Silicon Valley.
In the next article, we'll explain one of the most unique aspects of buying a home in the United States: the escrow process.
Fumika Takazawa
Bay Area Realtor
DRE#02216353
eXp Realty
(408)800-7625