What Long-Term Homeowners Should Know Before Selling a Highly Appreciated Home?

By Georgina Patterson | Your Real Estate Connection

In Marin County and many parts of California, it is very common for homeowners to experience significant appreciation after owning a home for many years. A property purchased decades ago for a few hundred thousand dollars may now be worth well over one million dollars today.

Many homeowners are concerned that selling their home could result in substantial capital gains taxes due to years of appreciation.

Understanding how capital gains work before selling can help homeowners better prepare financially and potentially reduce taxable gains.

Long-Term vs. Short-Term Capital Gain

For tax purposes, long-term capital gain generally applies when a property has been owned for more than one year.

Short-term gain applies when a property is owned for less than one year.

When discussing the sale of a primary residence, long-term homeowners often benefit from more favorable capital gains tax treatment than short-term capital gains, which are generally taxed as ordinary income.

Primary Residence Exclusion

 Homeowners may qualify for a capital gain exclusion on the sale of their primary residence.

If you have lived in the home for at least 2 years out of the last 5 years before the sale, you qualify to exclude:

• Up to $500,000 if married filing jointly

• Up to $250,000 if single

This exclusion can make a substantial difference for homeowners who have owned their property for many years.

Understanding Capital Gain

Capital gain is generally the difference between:

• How much you originally paid for the home, and

• How much did you sell the property for

For example, a homeowner purchased a home in Marin County in 1990 for $400,000.

Thirty years later, the property sells for $1,400,000.

In this example, the appreciation over time generated $1,000,000 in gains before adjustments and exclusions.

This is a very common situation throughout Marin County and many parts of the Bay Area.

Why Cost Basis Is Important

One of the most important concepts homeowners should understand is “cost basis.”

The basis of the property generally starts with:

• The original purchase price of the home

  
  

However, certain expenses may be added to the basis over time. This is important because increasing the cost basis helps reduce the taxable gain.

Costs That May Increase Basis

Some examples of expenses that increase cost basis include:

• Major renovations

• Room additions

• Kitchen remodels

• Roof replacement

• Landscaping projects

• Permit costs

• Contractor fees

• Architect and consultant fees

Certain closing costs from the original purchase may also be included.

For example:

• Purchase price: $500,000

• Qualifying closing costs and improvements: $20,000

The adjusted cost basis becomes:

500,000 + 20,000 = 520,000

If the property later sells for $1,300,000, the estimated gain would be:

1,300,000 − 520,000 = 780,000

If the homeowners qualify for the $500,000 exclusion for married filing jointly, the remaining taxable gain could be approximately:

780,000 − 500,000 = 280,000

Improvements vs. Repairs

It is important to understand the difference between improvements and repairs.

Improvements

Improvements increase the basis of the home and reduce taxable gain later.

Examples include:

• Major remodeling projects

• Additions

• Roof replacement

• Kitchen renovations

• Extensive landscaping

• Structural improvements

Repairs

Repairs generally do not increase basis.

Examples may include:

• Fixing leaks

• Repainting

• Replacing broken items

• Routine maintenance

Keeping renovation expenses and repair expenses organized separately is very important.

Keep Your Records Organized

Keeping organized records is extremely important, especially for long-term homeowners.

Important documents may include:

• Contractor invoices

• Receipts

• Permits

• Warranties

• Settlement statements from the title company

• Closing statements

• Remodeling documentation

The more documentation homeowners keep regarding their home, the easier it may be to support the adjusted basis later if needed.

Even repair records and warranties can still be valuable for future reference and resale purposes.

Paper Receipts Fade Over Time

One practical issue many homeowners face is that paper receipts often fade over time.

Many receipts from years ago become unreadable and may no longer be useful.

A good strategy is to scan and digitally organize receipts and invoices as they are received.

Apps such as SimplyWise can help homeowners scan and organize receipts digitally.

Creating separate folders for:

• Remodeling expenses

• Contractor invoices

• Repair records

• Warranties

• Closing documents

It can help homeowners stay organized over the years.

Selling Costs and Capital Gains

Some selling costs connected to the sale of the home also help reduce taxable gain.

Examples include:

• Real Estate commissions

• Title and escrow fees

• Some professional fees are connected to the sale

Preparing a home for sale also involves costs such as:

• Deep cleaning

• Staging

• Home inspections

• Natural hazard disclosures

Proper documentation of these expenses is important.

Timing Can Affect Taxes

Timing may also affect taxation. Long-term capital gains are generally taxed differently from short-term capital gains.

Depending on income levels, long-term capital gains may be taxed at:

• 0%

• 15%

• or 20%

For some homeowners, selling during a lower-income year helps reduce the tax impact. For example, a retired homeowner with a lower annual income falls into a lower long-term capital gain bracket than someone with high earned income.

Final Thoughts

For many homeowners in Marin County and throughout California, substantial appreciation over decades of ownership is extremely common.

Understanding:

• Capital gain

• Cost basis

• Improvements

• Exclusions

• and Record keeping

It can help homeowners better prepare before selling a highly appreciated property.

Keeping organized records, maintaining digital copies of receipts, and understanding the difference between repairs and improvements makes a significant difference when calculating taxable gain later.

Before selling, homeowners should consult with their tax professional and financial advisor. 

About the Author

Georgina Patterson is a French-American real estate professional serving buyers and sellers across Marin and Sonoma County. With a background in tax preparation as an Enrolled Agent, she helps clients better understand both the lifestyle and financial side of homeownership. Georgina is fluent in both French and English, allowing her to effectively serve international clients.

Georgina Patterson Realtor®, DRE #02104684

📞 415.342.6794

✉️ Georgina.Patterson@kw.com  

🌐 GeorginaTheHomeFinder.com

Let’s Talk Through Your Position

If you are considering moving to Marin County, I am happy to walk you through to discover whether buying or renting makes more sense to you.