PACE and Mello-Roos Liens in California: The Assessment Stack That Survives Your Foreclosure Purchase

The Assessment Stack You Didn't See Coming

A San Bernardino County investor purchased a single-family residence at a trustee sale in Fontana for $287,000 in early 2023. The property had been encumbered by a first deed of trust with an unpaid balance of $412,000, which the trustee sale extinguished as expected. What the investor discovered thirty days later when the property tax bill arrived: a $47,200 outstanding PACE lien from a 2019 solar panel and HVAC installation, plus $8,400 in remaining Mello-Roos special assessments from the community facilities district that built the subdivision's infrastructure in 2006. Neither obligation was extinguished by the foreclosure. Both now belonged to the new owner.

This scenario plays out across California with alarming frequency because PACE (Property Assessed Clean Energy) financing and Mello-Roos Community Facilities District assessments occupy the same priority position as ad valorem property taxes. Under California law, they are collected on the property tax bill, they run with the land, and they survive every foreclosure except a tax sale. The investor who assumes these liens are subordinate debt learns an expensive lesson about California's assessment lien hierarchy.

The Legal Architecture of PACE in California

California's PACE program operates under the authority of Assembly Bill 811 (2008), codified in California Streets and Highways Code sections 5898.10 through 5898.32. The statute authorizes local governments to create voluntary contractual assessment districts that allow property owners to finance energy efficiency improvements, renewable energy installations, water conservation measures, and seismic retrofits. The financing is repaid through an assessment levied on the property tax bill, typically over 15 to 25 years.

The critical language appears in Streets and Highways Code section 5898.30: assessments levied under a PACE program "shall have the same priority, lien, and collection procedures as regular property taxes." This single sentence determines everything about PACE lien survival in foreclosure.

When a property owner defaults on a conventional mortgage and the lender forecloses through a trustee sale under California Civil Code sections 2924 through 2924m, the sale extinguishes junior liens. But PACE assessments are not junior liens in the traditional sense. They are contractual assessments that have been granted property tax lien priority by statute. The trustee sale wipes out the deed of trust being foreclosed, any junior deeds of trust, judgment liens, and mechanic's liens. It does not wipe out property taxes, and by operation of law, it does not wipe out PACE assessments.

The major PACE programs operating in California include HERO (Home Energy Renovation Opportunity), Ygrene Energy Fund, Renew Financial, and various county-administered programs. Each program records a Notice of Assessment Lien with the county recorder when the financing closes. This recording provides constructive notice, but the lien itself exists independently by virtue of the assessment contract between the property owner and the PACE administrator.

Mello-Roos: The Original Assessment Survival Mechanism

Mello-Roos Community Facilities Districts predate PACE by decades. Established under the Mello-Roos Community Facilities Act of 1982, Government Code sections 53311 through 53368.3, these special districts allow local governments and developers to finance public infrastructure—schools, roads, parks, water systems, fire stations—through special taxes levied on properties within the district.

Unlike PACE, which is voluntary and contractual, Mello-Roos special taxes are imposed by district formation, typically at the time of subdivision development. Property owners who purchase homes in a Mello-Roos district are obligated to pay the special tax for the life of the bonds that financed the improvements, often 25 to 40 years.

Government Code section 53356.1 establishes that Mello-Roos special taxes are collected on the county property tax bill. Section 53356 provides that delinquent special taxes are subject to the same penalties and collection procedures as delinquent ad valorem property taxes. This statutory framework creates the same survival characteristic as PACE assessments: the special tax obligation runs with the land and is not extinguished by foreclosure of a deed of trust.

The practical difference between Mello-Roos and PACE for foreclosure investors is disclosure. Mello-Roos obligations are disclosed in recorded Notices of Special Tax Lien filed at the time of district formation. More critically, California Civil Code section 1102.6b requires sellers to provide buyers with a Mello-Roos disclosure form, and Government Code section 53341.5 requires subdividers to record a Notice of Special Tax that identifies the maximum special tax rate. A competent title search will reveal the existence of a Mello-Roos district.

The challenge is quantification. The Notice of Special Tax Lien discloses the maximum authorized special tax, not the current annual amount. In a district with partially retired bonds, the current tax may be substantially lower than the maximum. In a district approaching bond maturity, the remaining obligation may be modest. But in a district formed within the last decade with 30-year bonds outstanding, the buyer at foreclosure may be inheriting hundreds of thousands of dollars in future tax obligations.

Why the Stacking Problem Compounds

California properties can simultaneously carry both PACE assessments and Mello-Roos special taxes. A home in a Rancho Cucamonga CFD that was later improved with PACE-financed solar panels will show both obligations on the property tax bill. Both survive foreclosure. Both must be paid by whoever owns the property after the trustee sale.

The stacking creates due diligence complexity because the obligations appear in different places in the public record:

PACE assessments are evidenced by (1) a Notice of Assessment Lien recorded with the county recorder, (2) the assessment appearing on the annual property tax bill under a line item separate from the ad valorem tax, and (3) the contractual agreement between the property owner and the PACE administrator, which may or may not be recorded.

Mello-Roos special taxes are evidenced by (1) the Notice of Special Tax Lien recorded at district formation, (2) the annual special tax appearing on the property tax bill, and (3) the continuing disclosure documents filed by the CFD with the California Debt and Investment Advisory Commission.

A foreclosure investor relying solely on a preliminary title report may see the recorded notices but will not see the current outstanding balance, the payoff amount, or the future payment stream. The property tax bill—available from the county tax collector—provides the annual amount but not the aggregate remaining obligation.

AB 2693 and the PACE Disclosure Problem

Recognizing the informational asymmetry in PACE transactions, California enacted Assembly Bill 2693 in 2018, which added disclosure requirements to Streets and Highways Code section 5898.16. The law requires PACE administrators to provide property owners with specific disclosures before financing closes, including the total estimated cost, the annual assessment amount, and the impact on property taxes.

Critically, AB 2693 also added section 5898.26, which requires the PACE administrator to request payoff demand statements from all existing lien holders and to provide those lien holders with notice of the PACE assessment. This requirement was intended to address complaints from mortgage lenders who discovered PACE liens had been placed ahead of their security interest without notice.

For foreclosure investors, AB 2693 created an indirect benefit: PACE administrators must now provide payoff demand statements upon request. Under section 5898.28, a property owner or authorized agent can request a payoff statement from the PACE administrator. The administrator must provide the statement within 30 days, specifying the total amount required to satisfy the PACE lien.

The practical limitation is timing. A foreclosure investor conducting due diligence before a trustee sale typically has days, not weeks, to evaluate the property. Requesting and receiving a PACE payoff statement within that window is often impossible. The investor must instead estimate the outstanding obligation from the recorded Notice of Assessment Lien (which shows the original principal amount) and the property tax bill history (which shows annual assessment amounts paid).

Calculating What You're Actually Buying

The due diligence mathematics for California PACE and Mello-Roos obligations requires three data points for each assessment:

Original principal amount: Found on the recorded Notice of Assessment Lien (PACE) or the bond issuance documents (Mello-Roos).

Annual payment amount: Found on the property tax bill, typically itemized separately from the general ad valorem tax.

Remaining term: For PACE, the term is specified in the Notice of Assessment Lien (typically 15-25 years from origination). For Mello-Roos, the bond maturity date is specified in the Notice of Special Tax Lien.

Consider a Riverside County property purchased at trustee sale for $315,000 with the following assessment stack:

PACE Lien (HERO Program):

• Original amount: $38,500 (2020 solar installation)
• Annual assessment: $3,850
• Remaining term: 17 years
• Estimated remaining principal: approximately $31,000-34,000 (depending on amortization)

Mello-Roos Special Tax (CFD 2008-01):

• Annual special tax: $2,100
• Bond maturity: 2038
• Remaining annual payments: 15 x $2,100 = $31,500 aggregate

The investor is effectively buying the property for $315,000 plus approximately $62,500-65,500 in assessment obligations that will be collected through future property tax bills. If the investor fails to account for these obligations when calculating maximum bid, the actual acquisition cost substantially exceeds the trustee sale purchase price.

The Tax Sale Exception and Its Limitations

The only foreclosure proceeding that extinguishes PACE and Mello-Roos liens in California is a tax sale conducted under Revenue and Taxation Code sections 3691 through 3731. A tax sale is conducted by the county tax collector after a property has been tax-defaulted for five years. The sale extinguishes all private liens and encumbrances, including deeds of trust, judgment liens, and—importantly—PACE assessments.

However, California counties rarely conduct tax sales because delinquent property tax liens are typically purchased by tax lien investors through the county's agreement sale or alternative collection procedures. Moreover, properties with substantial equity rarely remain tax-defaulted long enough to reach tax sale; the owner, a lienholder, or a redemption bidder typically pays the delinquent taxes before the five-year default period expires.

For practical purposes, foreclosure investors should assume they are purchasing at trustee sales, not tax sales, and that all PACE and Mello-Roos obligations survive.

What TitlePin Would Have Shown

The San Bernardino investor who purchased the Fontana property would have seen the assessment stack clearly identified in a TitlePin report before bidding. TitlePin aggregates data from multiple county sources, including recorded assessment liens from the county recorder, property tax bill line items from the county tax collector, and CFD formation documents from county planning records.

The TitlePin report for that property would have flagged:

• PACE Assessment Lien: Notice of Assessment Lien recorded 2019-08-14, Instrument No. 2019-0284721, Original Amount $47,200, 20-year term, HERO Program
• Mello-Roos Special Tax: CFD 2006-02 (Fontana Infrastructure), Special Tax Lien recorded 2006-03-22, Current Annual Tax $1,400, Bond Maturity 2036
• Assessment Survival Alert: Both obligations survive trustee sale and will transfer to purchaser

Critically, TitlePin calculates an estimated remaining balance based on the original principal, annual payment amounts from tax bill history, and the assessment term. This allows investors to incorporate the assessment stack into their maximum bid calculation before auction, not after.

Junior PACE: The Emerging Exception

Recent California legislation has created a new category of PACE financing that does not enjoy property tax lien priority. Assembly Bill 1284 (2017), codified in Financial Code sections 22680 through 22693.5, established the PACE Loss Reserve Fund and permitted the creation of "PACE financing" that is subordinate to existing mortgage liens.

Under Financial Code section 22689, a PACE financing instrument may be recorded as a junior assessment lien if the program administrator participates in the PACE Loss Reserve Fund. This subordinate PACE lien would be extinguished by a foreclosure of a senior deed of trust, just like any other junior lien.

However, junior PACE remains relatively uncommon. Most PACE financing in California continues to be originated through assessment district programs under Streets and Highways Code section 5898 et seq., which carries property tax lien priority. Foreclosure investors should not assume a PACE lien is subordinate without verifying the specific program and statutory authority under which it was originated.

Orange County Case Study: Layered Assessments in a Hot Market

Orange County presents a particularly concentrated example of assessment stacking. The county contains over 400 active Mello-Roos Community Facilities Districts, many of which were formed during the residential building boom of the 1980s and 1990s. Simultaneously, Orange County was an early adopter of PACE financing, with significant HERO program penetration in cities like Anaheim, Santa Ana, and Garden Grove.

An investor evaluating a trustee sale property in Irvine must navigate:

1. City of Irvine Landscape Maintenance Assessment Districts (special assessments for median landscaping, parkway maintenance)
2. Orange County Sanitation District Assessments (sewer system financing)
3. Irvine Unified School District CFD Special Taxes (school facility financing)
4. Any PACE assessments from voluntary property improvements

Not all of these assessments carry property tax lien priority. Landscape maintenance assessments under the Landscaping and Lighting Act of 1972 (Streets and Highways Code section 22500 et seq.) are typically subordinate to deeds of trust. But CFD special taxes and PACE assessments are not. The investor must distinguish between assessment types, identify which survive foreclosure, and calculate the aggregate obligation.

Key Takeaways

• PACE assessments in California carry property tax lien priority under Streets and Highways Code section 5898.30 and survive trustee sale foreclosures. The purchaser at foreclosure inherits the remaining PACE obligation.

• Mello-Roos special taxes survive all foreclosures except tax sales and continue until the underlying bonds mature, often 25-40 years from district formation.

• Both obligations appear on the property tax bill but require separate analysis to determine remaining principal (PACE) and aggregate future payments (Mello-Roos).

• AB 2693 requires PACE administrators to provide payoff statements within 30 days of request, but this timeline often exceeds the due diligence window before trustee sales.

• Junior PACE exists but remains uncommon; assume PACE liens carry senior priority unless you can verify participation in the Financial Code section 22689 Loss Reserve Fund program.

Sources

• California Streets and Highways Code sections 5898.10-5898.32 (PACE authorization and lien priority)
• California Government Code sections 53311-53368.3 (Mello-Roos Community Facilities Act of 1982)
• California Civil Code sections 2924-2924m (trustee sale procedures)
• California Revenue and Taxation Code sections 3691-3731 (tax sale procedures)
• California Financial Code sections 22680-22693.5 (PACE Loss Reserve Fund and junior PACE)
• Assembly Bill 811 (2008), Chapter 159, California Statutes of 2008
• Assembly Bill 2693 (2018), Chapter 813, California Statutes of 2018
• Assembly Bill 1284 (2017), Chapter 475, California Statutes of 2017
• California Government Code section 53341.5 (Mello-Roos disclosure requirements)
• California Civil Code section 1102.6b (Mello-Roos resale disclosure)