How Property Taxes Change When You Sell Your LA Apartment Building (Prop 13 Explained)

Understanding Proposition 13

If you've owned your Los Angeles apartment building for any length of time, you're benefiting from one of the most significant pieces of legislation in California history: Proposition 13.

Passed by voters in 1978, Prop 13 limits how much your property taxes can increase each year—but that protection ends when you sell. Understanding this dynamic is critical for both sellers and buyers in the LA multifamily market.

How Prop 13 Protects Current Owners

The 1-2% Annual Cap

Under Prop 13, your property's assessed value can only increase by a maximum of 2% per year, regardless of how much the market value has risen. This means:

• A building purchased in 2000 for $1,000,000 would have a current assessed value of roughly $1,600,000
• That same building might have a market value of $4,000,000 or more
• The owner pays taxes on $1.6M, not $4M

The Tax Rate

Property taxes in LA start with the 1% Prop 13 rate, plus voter-approved debt and fixed direct assessments that vary by parcel. This example uses 1.25% as a round number; your tax bill shows the actual rate. So:

• Taxes on $1.6M assessed: ~$20,000/year
• Taxes on $4M assessed: ~$50,000/year
• Annual savings: $30,000

This is why long-term owners often have dramatically lower property taxes than recent buyers of comparable buildings.

What Happens When You Sell

Reassessment to Market Value

When ownership changes, the property is reassessed to its current market value (the sale price). This means:

• The buyer's property tax bill will be based on what they paid
• A $4,000,000 purchase = ~$50,000/year in property taxes
• This is a permanent increase that affects the property's NOI and value

Impact on Buyers

Sophisticated buyers always underwrite the post-sale property tax, not your current tax bill. This means:

• Your low property taxes don't directly increase what buyers will pay
• Buyers calculate NOI using the reassessed tax amount
• The "Prop 13 benefit" stays with you—it doesn't transfer to the buyer

Example: How This Affects a Sale

Your Building:

• Gross Income: $300,000
• Operating Expenses (with your $15,000 property tax): $105,000
• Your NOI: $195,000

Buyer's Perspective:

• Gross Income: $300,000
• Operating Expenses (with $50,000 reassessed tax): $140,000
• Buyer's NOI: $160,000

At a 5% cap rate:

• Value based on your NOI: $3,900,000
• Value based on buyer's NOI: $3,200,000

The $35,000 difference in property taxes translates to $700,000 in value. This is why buyers always adjust for reassessment. (This is a simplified illustration: the buyer's actual tax is based on the price they pay.)

Prop 19 and Inherited Properties

Proposition 19, passed in 2020, changed the rules for inherited properties:

Before Prop 19

• A parent's principal residence passed to children with no reassessment
• Other real property, including rentals, was excluded only up to the first $1 million of assessed value per parent

After Prop 19 (Current Rules)

• Primary residences (and family farms): the child can keep the parent's assessed value only by moving in as their own primary residence and filing within one year, and only up to the parent's assessed value plus about $1.04 million (indexed; $1,044,586 through February 15, 2027). Value above that is added to the assessment
• Investment properties, including apartment buildings: reassessed to market value upon inheritance (for transfers since February 16, 2021)
• This significantly impacts estate planning for apartment building owners

Planning Considerations

If you're planning to pass your building to heirs:

• Consult with an estate planning attorney about current options
• Consider whether holding vs. selling makes sense given Prop 19
• Understand that your heirs may face a significant tax increase

Strategies for Sellers

1. Understand Your True Position

Know the gap between your assessed value and likely sale price. This helps you understand:

• How buyers will underwrite your property
• Why offers may seem lower than you expected
• The real economics of your building vs. recently sold comps

2. Focus on What You Can Control

Since buyers will adjust for reassessment anyway, focus on:

• Maximizing rent income
• Controlling other operating expenses
• Presenting clean financials
• Highlighting upside potential

3. Consider 1031 Exchange Implications

If you're doing a 1031 exchange, remember:

• Your replacement property will also be reassessed
• You're trading your low tax basis for a new, higher one
• Factor this into your replacement property analysis

Why This Matters for Pricing

When you see comparable sales, remember that each buyer paid taxes based on their purchase price. A building that sold for $3M in 2015 has lower taxes than one that sold for $4M in 2023, even if they're identical properties.

This is why experienced brokers and appraisers always normalize for property taxes when comparing buildings.

Quick FAQs

Q: Will my low property taxes make my building worth more?
A: Unfortunately, no. Buyers underwrite based on what their taxes will be after reassessment, not your current taxes.

Q: Can I transfer my low tax basis to a replacement property in a 1031?
A: No. The replacement property will be assessed at its purchase price. The 1031 exchange defers capital gains taxes, not property taxes.

Q: What if I add my child to the title?
A: It depends on how title is held. Adding a child as a tenant in common is generally a change in ownership of the share transferred. A joint tenancy where you remain on title is generally not reassessed until your interest ends. There can also be gift-tax and income-tax-basis consequences, so talk to a tax attorney before making any ownership changes.

Have questions about how property taxes affect your building's value? Request a valuation and let's discuss your specific situation.

Sources

• California State Board of Equalization: Proposition 19 (parent-child exclusion, current exclusion amount)
• California State Board of Equalization: Change in Ownership FAQ
• Los Angeles County Assessor: Proposition 13

This article is general information, not tax, legal or investment advice. Rules and figures were checked against the sources above on November 5, 2026 and can change. Confirm how they apply to you with a CPA or attorney.