How Property Tax Works When You Buy in LA County
Prop 13 reassessment, supplemental bills, special assessments, Mello-Roos, and how to estimate your exact number before making an offer.
- 1How Prop 13 Reassessment Works at Purchase
- 2The 1.25% Rate: What It Is and What It Includes
- 3The Supplemental Tax Bill Every Buyer Gets
- 4How to Estimate Your Bill Before Buying
- 5Mello-Roos and Special Districts
- 6What Triggers (and What Doesn't Trigger) Reassessment
- 7LA vs. Orange County Property Tax
- 86 Mistakes Buyers Make on Property Tax
- 9Property Tax Payment Calendar
- 10Prop 19 Portability for Buyers 55+
- 11How to Appeal Your Assessment
- 12Quick Reference Cheat Sheet
- 13Property Tax Glossary
- 14Frequently Asked Questions
How Prop 13 Reassessment Works at Purchase
Proposition 13, passed by California voters in 1978, is the single most important thing to understand about property taxes before you buy in LA County. Here is the core rule: your property is reassessed to full market value -- meaning your purchase price -- the moment you close escrow. That new figure becomes your assessed value, and it is the starting point for everything that follows.
Before your purchase, the previous owner may have been paying taxes on an assessed value set decades ago, capped by Prop 13's 2% annual increase limit. Their tax bill on a $1.4 million Pasadena Craftsman might reflect an assessed value of $400,000 from 1994. When you buy at today's market price, that historical benefit disappears. Your assessment resets to what you paid -- and then the 2% cap begins protecting you going forward. This is why long-term owners in neighborhoods like Eagle Rock or Highland Park often pay a fraction of what their new neighbors pay.
The reassessment date is the first day of the month following your change of ownership. So if you close on October 15, your new assessment is effective November 1. The LA County Assessor then calculates a prorated supplemental tax for the period from November 1 through June 30 -- the remainder of the fiscal year.
- Annual increases capped at 2% permanently
- Protection from runaway market appreciation
- Long-term cost predictability for budgeting
- Tax base established at purchase -- never a surprise spike
- Your tax bill is higher than the prior owner's was
- Supplemental bill arrives 2 to 6 months after closing
- No grace period on the new assessment
- Moving up means a full reset, even within LA County
In my 13 years representing buyers across LA County, the biggest property tax shock I see is not the annual bill -- it is the supplemental bill. Buyers budget for the regular payment, then forget that the county sends a separate one-time charge after closing. I walk every client through this before we even start looking at homes.
Understanding this dynamic also matters when you compare LA County to adjacent markets. If you are weighing homes on both sides of the county line, see our full breakdown of orange county property tax -- the structural rules are the same, but the specific bond measures and CFD patterns differ in ways that can meaningfully affect carrying cost. For buyers deciding between neighborhoods at similar price points, that difference can matter more than a $10,000 difference in list price.
The 1.25% Rate: What It Is and What It Includes
California's Prop 13 sets a base property tax rate of 1% of assessed value. That is the floor -- the statewide general levy. But almost no property in LA County pays exactly 1%. When you add voter-approved bonds, school levies, and special district assessments, the effective rate for most LA County buyers lands between 1.15% and 1.35%, with 1.25% as the standard planning estimate used by most lenders and real estate agents.
Your exact rate depends on your Tax Rate Area (TRA). LA County has more than 900 taxing authorities, and your property's TRA determines which combination applies to you. Two homes on the same block can theoretically fall in different TRAs if they are in different school district zones. The LA County Auditor-Controller publishes a free Tax Rate Area Lookup at auditor.lacounty.gov -- enter any address and get the exact rate.
One note for buyers comparing across neighborhoods: the rate difference between the lowest and highest TRAs in LA County is roughly 0.2 percentage points. On a $900,000 purchase, that is $1,800 per year -- real money, but rarely the deciding factor between two properties. What more commonly swings carrying cost is the presence or absence of Mello-Roos, which can add $1,200 to $6,000 per year as a flat charge on top of whatever your TRA rate produces. Always look at both before comparing homes across different parts of the county.
Mello-Roos (Community Facilities District taxes) appear as separate line items and are NOT part of the percentage-based rate. Neither are direct assessments for things like landscape maintenance, sidewalk repair, or refuse collection. These are dollar-amount charges, not percentages, and they show separately on your tax bill.
| Price Point | At 1.15% | At 1.25% | At 1.35% | Per Month (1.25%) |
|---|---|---|---|---|
| $600,000 | $6,900/yr | $7,500/yr | $8,100/yr | $625/mo |
| $800,000 | $9,200/yr | $10,000/yr | $10,800/yr | $833/mo |
| $1,000,000 | $11,500/yr | $12,500/yr | $13,500/yr | $1,042/mo |
| $1,200,000 | $13,800/yr | $15,000/yr | $16,200/yr | $1,250/mo |
| $1,500,000 | $17,250/yr | $18,750/yr | $20,250/yr | $1,563/mo |
| $2,000,000 | $23,000/yr | $25,000/yr | $27,000/yr | $2,083/mo |
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Reserve Your Free SeatThe Supplemental Tax Bill Every Buyer Gets
Every buyer in California receives a supplemental property tax bill after close of escrow. This is not a penalty -- it is the mechanism by which the county collects the tax on the difference between the previous owner's assessed value and your new one, prorated for the remainder of the fiscal year (July 1 through June 30).
Here is the practical timeline: after you close, the LA County Assessor's office processes your change of ownership, which typically takes 2 to 6 months. They then calculate the supplemental assessment and mail a Notice of Assessed Value Change. The supplemental tax bill follows. Unlike your regular annual tax bill, which your lender usually pays from your impound account, the supplemental bill is mailed directly to you and is your responsibility to pay.
If your close of escrow falls between January 1 and May 31, you will receive two supplemental bills -- one for the remainder of the current fiscal year, and one for the full upcoming fiscal year. This is one of the most common buyer surprises I see. Budget accordingly before you close.
The safest practice: ask your agent to pull the current assessed value from the LA County Assessor's records before you close, calculate the gap, and set aside funds equal to about 6 months of tax on that difference. Your escrow officer can help with the math as well.
How to Estimate Your Bill Before Buying
You do not have to wait until escrow to know what your taxes will be. Here is the 5-step method I walk clients through before they make any offer in LA County. It takes about 10 minutes and can prevent a very unpleasant surprise 6 months after move-in.
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1
Look Up the Tax Rate Area
Visit the LA County Auditor-Controller's website at auditor.lacounty.gov and use the Tax Rate Area Lookup. Enter the property address to get the exact total rate for that location. This is the most precise number you can get -- far better than using a county average.
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2
Multiply Purchase Price by the Rate
Take your expected offer price and multiply by the TRA rate. If you have not looked up the TRA yet, use 1.25% as a planning estimate. Example: $975,000 purchase x 1.25% = $12,188 per year, or $1,016 per month.
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3
Check for Mello-Roos
Ask the listing agent directly: "Is this property in a Community Facilities District?" The seller is required to disclose this. You can also check the LA County Special Districts Portal or look at the current property tax bill in the disclosures -- Mello-Roos appears as a separate line item.
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4
Add Fixed Assessments
Review the current annual tax bill, available through the LA County Property Tax Portal. Look for line items beyond the general levy: flood control district ($23-$28 typical), vector control, fire protection districts, and any local improvement districts. These amounts transfer to you and do not change when assessed value resets.
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5
Budget for the Supplemental Bill
Look up the prior owner's current assessed value on the LA County Assessor's website. Subtract it from your purchase price. Multiply the difference by 1.25% for the annual supplemental tax. Then prorate by how many months remain in the fiscal year -- that is roughly what your first supplemental bill will be.
Once you buy and occupy the property as your primary residence, file for the California Homeowners Exemption with the LA County Assessor. It reduces your assessed value by $7,000, saving approximately $70 per year. File it once -- it renews automatically as long as you own and occupy the home.
Understanding how property taxes connect to assessed value is also important when you are working through the appraisal process. For buyers navigating what comparable sales mean for your purchase price, see our guide on how appraisals work for LA buyers.
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Get My Free Home ValuationMello-Roos and Special Districts in LA County
Mello-Roos taxes come from Community Facilities Districts (CFDs) -- special tax zones created by local governments to fund infrastructure in newer developments. If a city or school district wanted to build roads, parks, or schools in a newly developed area without raising the general tax rate, it could create a CFD and have the properties in that zone pay a special annual tax. That tax is Mello-Roos.
The critical thing to understand: Mello-Roos is a flat dollar amount, not a percentage of assessed value. It does not scale with your home's price, and it is not affected by Prop 13. It appears as a separate line item on your annual tax bill, and it transfers to you as the new owner. Mello-Roos also expires -- most CFD taxes are structured to last 20 to 40 years, so older communities often have none while newer ones do.
You cannot negotiate Mello-Roos out of a purchase. It runs with the land. If the property is in a CFD, you inherit the obligation. When comparing two similar homes in different locations, always check whether Mello-Roos creates a meaningful total-cost difference before deciding.
| Area | Typical Mello-Roos | Notes |
|---|---|---|
| Valencia (FivePoint, West Creek) | $2,000 - $5,600/yr | Multiple CFDs often stacked |
| Stevenson Ranch | $1,500 - $3,500/yr | School district CFD common |
| Palmdale / Lancaster (new tracts) | $1,200 - $3,000/yr | Varies significantly by tract |
| Pasadena / Arcadia / Alhambra | $0 | Established cities, no active CFDs |
| Eagle Rock / Highland Park / NELA | $0 | Pre-1985, no CFD formation |
| New South Bay Developments | $600 - $2,400/yr | Check by specific address |
What Triggers Reassessment -- and What Does Not
Not every change in ownership or property modification triggers a Prop 13 reassessment. Knowing the difference can save tens of thousands of dollars in planning -- particularly for inherited property and transfers between family members. The California Revenue and Taxation Code lays out the complete list of exclusions, and Proposition 19 (passed in 2020) significantly narrowed the parent-to-child exclusion.
| Event | Triggers Reassessment? | Notes |
|---|---|---|
| Arms-length sale at market price | Yes -- full reset | Standard purchase trigger |
| Gift or below-market transfer | Yes (if above $1 FMV) | FMV applies |
| Spouse-to-spouse transfer | No | Excluded under Revenue and Taxation Code 63 |
| Parent-to-child transfer (primary residence) | Partial | Prop 19: Excluded up to $1M above assessed value |
| Refinancing | No | No change of ownership |
| Adding co-owner to title (without sale) | No | Proportional interest only |
| Death (with qualifying trust or heir transfer) | No (with exclusions) | Prop 19 rules apply |
| New construction / major addition | Partial -- addition only | Existing structure value unchanged |
| Cosmetic renovation / repair | No | Permits reviewed but generally no reset |
For buyers purchasing from long-term owners, the reassessment mechanics work in your favor long-term: once you reset, your 2% cap starts protecting you. For buyers inheriting property or receiving property through family transfers, the rules are more nuanced -- Proposition 19 changed what was previously a broad parent-to-child exclusion into a more limited benefit tied to primary residence use.
If you are dealing with inherited property and want to understand how assessments interact with the sale decision, see our full breakdown of orange county property tax for buyers moving between counties, and our guide on navigating a buyers market in LA real estate for broader buying strategy context.
LA County Property Tax vs. Orange County: Key Differences
Many buyers crossing the county line from LA County to Orange County -- or vice versa -- are surprised by how similar the core structure is. Both counties operate under Prop 13. The base 1% rate is identical statewide. The differences come in the bonds, special assessments, and the specific development patterns that make Mello-Roos more or less common.
Mello-Roos concentration: Santa Clarita, Palmdale/Lancaster new tracts
Older neighborhoods: Most NELA, SGV, and Westside neighborhoods have zero Mello-Roos
Special assessments: LA County Flood Control District assessment is near-universal; LAUSD and community college bonds are common
Mello-Roos concentration: Higher prevalence in master-planned communities (Irvine, Ladera Ranch, portions of Lake Forest, new Rancho Mission Viejo tracts)
Older neighborhoods: Similarly low in pre-1980 cities
Special assessments: OC Water District, local flood control, and city-specific measures
The mechanics of Prop 13 reassessment, supplemental bills, and the homeowners exemption are identical in both counties -- those are statewide rules. What differs is which bonds voters have approved and which CFDs have been formed. For buyers comparing specific properties across the county line, the TRA lookup is the definitive answer for either county. For a deeper look at how Orange County handles property tax, see our full guide on orange county property tax explained.
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Get My Free Home Valuation6 Property Tax Mistakes LA County Buyers Make
These are the most common errors I see -- in order of how expensive they are.
Quick Decision Matrix: Your Situation
LA County Property Tax Payment Calendar
Most buyers with a mortgage do not think much about payment timing because the lender handles it through an impound account. But if you close escrow without setting up impounds, or if your lender underfunds the impound, knowing the exact calendar matters. Late payments carry a 10% penalty on the delinquent amount -- not something you want to discover by accident.
| Date | What Happens | Notes |
|---|---|---|
| July 1 | Tax year begins (fiscal year start) | New assessed values effective |
| October / November | Annual tax bills mailed | Based on July 1 roll value |
| November 1 | 1st installment due | Covers July 1 through December 31 |
| December 10 | 1st installment delinquent | 10% penalty applies after this date |
| February 1 | 2nd installment due | Covers January 1 through June 30 |
| April 10 | 2nd installment delinquent | 10% penalty + $10 fee after this date |
| Ongoing (post-purchase) | Supplemental bill mailed | 2 to 6 months after close of escrow |
| Within 30 days of move-in | File Homeowners Exemption | File with LA County Assessor; renews automatically |
Your lender sets up an impound account based on the prior owner's tax bill from the loan disclosures. But your assessed value resets to what you paid -- which may be significantly higher. The lender's impound estimate may come up short in the first year. Call your servicer after close to confirm the impound amount reflects your new assessed value, not the prior owner's.
Prop 19 and What It Means for Buyers Over 55
Proposition 19, approved by California voters in November 2020, created a significant benefit for buyers aged 55 or older: the ability to transfer your current home's low property tax base to a new home anywhere in California, up to three times in your lifetime. This means that a long-term Pasadena homeowner who has been paying taxes on a $300,000 assessed value can sell and buy a new home at a higher price -- and carry that favorable tax base with them, subject to a formula adjustment.
This matters for the LA County buyer pool because it creates a class of move-up buyers who are not deterred by property tax resets the way first-time buyers are. If you are a seller, understanding that Prop 19 eligible buyers exist -- and may be specifically motivated to move -- is part of reading your buyer pool correctly. If you are a buyer over 55, talk to a tax professional before closing on any replacement property to confirm you meet the eligibility requirements and file the correct paperwork within the deadline.
The replacement home must be your primary residence. You must move within 2 years of selling the prior home. If the replacement home costs more than the prior home, the tax base difference is added proportionally. The exclusion is available up to three times during your lifetime. County of purchase does not matter -- Prop 19 applies statewide since April 1, 2021.
How to Appeal Your LA County Property Tax Assessment
Most buyers who purchase at fair market value will not have grounds to appeal their assessment -- because the purchase price is itself the strongest possible evidence of value. The LA County Assessor uses your recorded sale price as the primary benchmark. But there are situations where an appeal makes sense: if you overpaid due to duress, bought a distressed or damaged property at above-market pricing, or if the assessor's value comes in higher than what you actually paid.
The appeal window is tight. In LA County, you must file with the Assessment Appeals Board (AAB) between July 2 and November 30 of the assessment year. Missing this window means waiting a full year to challenge the value. The process involves submitting evidence -- typically recent comparable sales, an independent appraisal, or documentation of property condition issues that affected your purchase price.
Appeals tend to succeed when: (1) the property had major defects known at purchase that other buyers would not have paid full price for; (2) the market declined significantly between the close of escrow and the assessment date; (3) there was an error in the property's size or characteristics on record. Appeals almost never succeed on recently completed arms-length sales at market price -- that sale price is your assessment.
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1
Review the Notice of Assessed Value Change
After purchase, the assessor mails a notice showing your new assessed value. Compare it to your purchase price. If it is higher than what you paid, that is unusual and worth investigating -- contact the Assessor's office first to check for data entry errors before filing a formal appeal.
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2
File Before November 30
File your Application for Changed Assessment with the LA County Assessment Appeals Board online at assessmentappeals.lacounty.gov. There is a $30 filing fee. You will need the APN (Assessor's Parcel Number) from your tax bill and documentation supporting your claimed value.
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3
Gather Your Evidence
The strongest evidence for a newly purchased property is the recorded purchase price itself, combined with documentation of any known defects that reduced the property's value. An independent appraisal completed close to the assessment date is also useful. Recent comparable sales showing lower values in the same neighborhood can support your case.
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4
Attend the Hearing or Submit Evidence by Mail
The AAB will schedule a hearing. You may appear in person, by phone, or submit a written stipulation. The burden of proof is on you to show the assessor's value is incorrect. Hearings can take 6 to 18 months to schedule -- during that time you still owe and should pay your tax bill to avoid penalties, even if you disagree with the amount.
The LA County Assessor's office offers an informal assessment review process. Before going through the full AAB appeal, contact the Assessor and request a review of your value. Many assessment errors -- particularly clerical errors in square footage or lot size -- can be corrected quickly and informally without a formal hearing. This saves time and the filing fee.
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Get My Free Home ValuationWhat to Ask Your Agent About Property Tax Before You Offer
A competent buyer's agent should be running these numbers before you ever write an offer. If yours is not, ask directly. The information is all publicly available -- it just takes someone who knows where to look and why it matters.
1. What is the current assessed value? Pull from the LA County Assessor's website. Compare to the list price -- the gap tells you the supplemental bill exposure.
2. What is the exact Tax Rate Area rate? Look up via auditor.lacounty.gov. Use this, not the 1.25% estimate, for underwriting calculations.
3. Is the property in a Mello-Roos district? Ask the listing agent. Verify against the current tax bill in the seller disclosures.
4. What fixed assessments transfer to the buyer? Review the annual secured property tax bill line by line -- flood control, lighting districts, school bonds, and others all follow the property.
5. If buying between January 1 and May 31, budget for two supplemental bills. Calculate each one based on the assessed value gap and the months remaining in each fiscal year.
6. Does the seller qualify for any exemptions that will NOT transfer? Senior exemptions, disabled veterans exemptions, and similar programs are personal to the prior owner and do not carry over to you.
In 13 years of representing buyers across Pasadena, Eagle Rock, the SGV, and NELA, I have seen property tax surprises derail more post-close budgets than almost any other factor. It is not that the rules are hidden -- they are all public record. It is that most buyers and even some agents do not know which questions to ask before the offer goes in. Ask them up front. It takes 20 minutes and protects you from a 5-figure surprise.
Quick Reference Cheat Sheet
| What is the base tax rate? | 1% of assessed value under Prop 13 |
| What is the typical effective rate? | 1.15% to 1.35%; use 1.25% for planning |
| When does my assessment reset? | At purchase -- first day of the month after close |
| How fast can my taxes grow after purchase? | Maximum 2% per year under Prop 13 |
| When does the supplemental bill arrive? | 2 to 6 months after close of escrow |
| Does my lender pay the supplemental bill? | No -- it comes directly to you, not through impound |
| How many supplemental bills if I close Jan-May? | Two -- current fiscal year + next fiscal year |
| What is Mello-Roos? | A fixed annual CFD tax on newer developments; not a % of value |
| Do older LA neighborhoods have Mello-Roos? | Rarely -- most pre-1985 areas have none |
| Where do I find the exact rate for an address? | LA County Auditor-Controller TRA Lookup (auditor.lacounty.gov) |
| How do I claim the homeowners exemption? | File one-time with the LA County Assessor after occupying as primary |
| When are taxes due? | Nov 1 (1st installment) and Feb 1 (2nd installment) |
| Delinquency penalties? | 10% penalty on delinquent amount after Dec 10 (1st) or Apr 10 (2nd) |
| Can I appeal my assessed value? | Yes -- file with LA County Assessment Appeals Board by Nov 30 |
| Does Prop 19 let me transfer my tax base? | Yes, if 55+ or disabled -- to any CA county, up to 3 times lifetime |
| Does my lender pay the supplemental bill? | No -- mailed directly to you; not covered by standard impound account |
Source: LA County Assessor (assessor.lacounty.gov), LA County Auditor-Controller (auditor.lacounty.gov), LA County Property Tax Portal (propertytax.lacounty.gov), California Board of Equalization, Proposition 13 (1978), Proposition 19 (2020).
All rate ranges reflect 2025-2026 fiscal year data. Individual Tax Rate Areas vary. Always verify the exact rate for a specific address using the LA County Auditor-Controller TRA Lookup before making purchase decisions. Supplemental bill timing depends on when the Assessor processes your change of ownership -- the 2 to 6 month window is typical but not guaranteed. Mello-Roos figures cited are examples from publicly available disclosures and may not reflect current CFD rates -- request a current CFD disclosure from the seller for any property in a Community Facilities District.
Frequently Asked Questions
These are the questions buyers ask most often when working through an LA County purchase. If yours is not here, text Justin directly at (213) 262-5092.
What is the property tax rate in Los Angeles County?
The base rate is 1% of assessed value under Prop 13. When you add voter-approved bonds, school levies, and special assessments, most LA County buyers pay between 1.15% and 1.35% total. The commonly cited figure is approximately 1.25% as a working estimate, though your exact rate depends on your Tax Rate Area (TRA).
Does property tax reset when I buy a home in California?
Yes. Under Proposition 13, a change of ownership triggers a full reassessment at the purchase price. Your new assessed value becomes your tax base, and future increases are capped at 2% per year -- no matter how fast the market rises. This is one of the most important financial features of owning California real estate.
What is a supplemental property tax bill in California?
A supplemental bill is the one-time tax you owe on the difference between the previous owner's assessed value and your new purchase-price assessment. It is prorated for the remaining months in the fiscal year (July 1 to June 30). Expect it 2 to 6 months after closing. If you buy between January 1 and May 31, you may receive two supplemental bills.
What is Mello-Roos and does LA County have it?
Mello-Roos is a special tax levied in Community Facilities Districts (CFDs) to fund schools, roads, and infrastructure in newer developments. In LA County, it is most common in newer master-planned communities in Santa Clarita (Valencia, Stevenson Ranch), parts of Palmdale and Lancaster, and some newer tracts in the South Bay. Older neighborhoods in Pasadena, Eagle Rock, or Highland Park almost never carry Mello-Roos.
How do I estimate my property tax bill before buying in LA County?
Multiply the purchase price by your area's effective rate. For most LA County neighborhoods, 1.25% is a safe working estimate. On a $900,000 home, that is $11,250 per year or $938 per month. Then check the LA County Auditor-Controller's Tax Rate Area Lookup for the exact rate at that address, and ask if the property is in a Mello-Roos district.
What events trigger a property tax reassessment in California?
A change of ownership triggers full reassessment. This includes most sales, transfers, and gifts above fair market value. It does NOT include transfers between spouses, certain parent-to-child transfers under Prop 19 (with an exclusion limit), refinancing, or adding a co-owner on title without a sale. Death alone does not trigger reassessment if a qualifying transfer exemption applies.
Can I appeal my LA County property tax assessment?
Yes. You have until November 30 of the assessment year to file an appeal with the LA County Assessment Appeals Board. You will need to show that your purchase price was above market value -- typically by presenting recent comparable sales. Most buyers who closed at arm's length at market value will not have grounds to appeal, since purchase price is the strongest evidence of value.
Is there a homeowners exemption that reduces property tax in LA County?
Yes. The California Homeowners Exemption reduces your assessed value by $7,000, saving you roughly $70 per year on your tax bill. You must file a one-time claim with the LA County Assessor after purchasing and occupying the property as your primary residence. It is a small savings, but it is yours for as long as you own and occupy the home.
When are LA County property taxes due?
LA County property taxes are billed in two installments. The first installment covers July 1 through December 31 and is due November 1 (delinquent after December 10). The second installment covers January 1 through June 30 and is due February 1 (delinquent after April 10). Most buyers with a mortgage will have taxes impounded, meaning the lender collects and pays on their behalf.
What is a Tax Rate Area and how does it affect my bill?
A Tax Rate Area (TRA) is the specific geographic zone that determines which taxing authorities apply to your property. Two houses on the same street can be in different TRAs if they fall under different school districts, water districts, or municipal service zones. LA County has thousands of TRAs. The LA County Auditor-Controller offers a free TRA Lookup tool so you can see the exact rate for any address.
Property Tax Glossary for LA County Buyers
These are the terms you will encounter on your tax bill, in disclosure documents, and in conversations with your lender and escrow officer. Knowing what they mean prevents the most common buyer confusion points.
| Term | What It Means |
|---|---|
| Assessed Value | The value assigned to your property by the LA County Assessor for tax purposes. Under Prop 13, this resets to your purchase price at close of escrow and can increase no more than 2% per year afterward. |
| Appraised Value | The value determined by a licensed appraiser for your lender, used to confirm the loan amount is justified. Not the same as assessed value. Appraised value is a market opinion; assessed value is set by the county. |
| Base Year Value | The assessed value established at the time of purchase (or construction). Under Prop 13, annual increases are limited to 2% from this base year value. |
| Change of Ownership | Any transfer of property that triggers a reassessment under Prop 13. Most sales qualify. Some transfers between family members are excluded under specific statutes. |
| Community Facilities District (CFD) | The formal name for a Mello-Roos district. A special tax zone created to fund public infrastructure in newer developments. The annual CFD tax appears separately on your property tax bill. |
| Direct Assessment | A fixed-dollar charge for a specific service or improvement district, such as weed abatement, landscape maintenance, lighting, or flood control. Appears as a separate line item on your tax bill and does not scale with assessed value. |
| Homeowners Exemption | A one-time filing that reduces your assessed value by $7,000. Available to owner-occupants of primary residences in California. Saves approximately $70 per year. File with the LA County Assessor after purchase. |
| Impound Account | Also called an escrow account. A portion of your monthly mortgage payment set aside by your lender to pay property taxes and insurance on your behalf. The supplemental bill is typically NOT paid through the impound account. |
| Mello-Roos | Informal name for a Community Facilities District tax. Named after the California legislators who authored the enabling legislation (Mike Mello and Don Roos). Most common in post-1985 master-planned developments. |
| Proposition 13 | The 1978 California ballot measure that caps property tax at 1% of assessed value and limits annual assessment increases to 2%. Reassessment to market value is triggered only by a change of ownership or new construction. |
| Supplemental Assessment | The interim reassessment calculated after your purchase, representing the difference between the prior owner's assessed value and your new purchase-price-based value, prorated for the remainder of the fiscal year. |
| Tax Rate Area (TRA) | A geographic zone that determines which combination of taxing authorities (state, county, city, school districts, special districts) applies to a specific property. LA County has thousands of distinct TRAs. |
Ready to Buy in LA County? Start With a Free Property Tax Review.
Before you make an offer, know exactly what you are getting into on taxes. Justin will pull the TRA rate, check for Mello-Roos, estimate your supplemental bill, and walk you through the full carrying cost picture -- at no cost.
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