California Form RE 4521 is the Mortgage Loan Activity Report that every California real estate broker who negotiates, makes, services, or arranges loans secured by real property must file with the California Department of Real Estate under Business and Professions Code §10232.2. The form captures every covered loan transaction during the broker’s fiscal year and feeds the DRE’s audit and trust-fund oversight program.
Filing this report wrong, late, or not at all triggers a $50-per-day penalty, possible license discipline under §10177, and in serious cases an immediate desk audit by the DRE Mortgage Loan Activities Unit. According to the DRE 2024 Annual Report, more than 3,800 brokers file the RE 4521 each year, and roughly 14% of them are flagged for follow-up because of math errors, missing trust-fund disclosures, or reporting period mistakes.
Here is what you will learn in this guide:
- 📋 What Form RE 4521 covers and exactly who must file it under California law
- 🗂️ The eight-document pre-filing checklist that prevents most rejections
- ✏️ A line-by-line walkthrough of every box on the current Rev. 10/23 form
- 👥 Three full-named scenarios showing real broker filings from start to finish
- ⚖️ Filing deadlines, fees, penalties, and the proof-of-filing you must keep
What Form RE 4521 Is and Who Must File It
Form RE 4521, titled the Mortgage Loan Activity Report, is the annual disclosure that licensed California real estate brokers use to report mortgage loan activity to the DRE Mortgage Loan Activities Unit. The form is required by Business and Professions Code §10232.2 and the supporting Commissioner’s Regulation §2846.5. The current revision is RE 4521 Rev. 10/23, and you should always confirm the version printed in the lower-left corner of page 1 before you start.
Any broker who meets the threshold under §10232 must file. The threshold is met when, during the prior fiscal year, the broker negotiated or made 20 or more loans or loans totaling $2,000,000 or more in aggregate principal. Brokers who service loans for note holders also file when servicing activity crosses the same line. The reporting obligation captures both Article 5 loans (consumer-purpose) and Article 7 loans (broker-arranged trust deed investments under §10237).
The form is filed by the designated officer of a corporate broker, by the sole proprietor broker for an individual license, and by the responsible broker for a fictitious-business-name DBA. Property managers who only collect rent are not covered, but property managers who arrange owner-financing or seller carrybacks usually are. Mortgage Loan Originators (MLOs) endorsed under the SAFE Act do not file individually; their employing broker files for them. The penalty for non-compliance starts at $50 per day and escalates to license suspension, so the form is non-optional once the threshold is crossed.
Before You Start: Documents and Information You Need
The single biggest cause of RE 4521 rejection is starting the form before gathering source data. The DRE expects every figure to tie back to your trust account ledgers, your Trust Fund Status Report (RE 4524), and your loan-by-loan transaction log. Pull all source documents before you open a blank RE 4521.
Use this pre-filing checklist before you write a single number on the form:
- Broker license number and NMLS ID. The DRE cross-checks both against the NMLS Consumer Access database; a mismatch triggers a manual hold.
- Fiscal year-end date. Most brokers use 12/31, but if you elected a non-calendar fiscal year on your last filing you must keep it consistent or the report is rejected.
- Trust account bank statements. Twelve months of statements reconcile against Section III; missing months force a desk audit.
- Trust Fund Status Report (RE 4524). This companion form is filed with RE 4521 if you handled trust funds during the year.
- Threshold Notification (RE 853). If you crossed the threshold for the first time, the RE 853 must already be on file before RE 4521 is accepted.
- Loan transaction log. A spreadsheet or LOS export listing every loan negotiated, made, or serviced, with date, principal, lender, borrower, and property address.
- Multi-lender transaction list. Required if you arranged any loan with two or more investors under §10238.
- Prior year’s RE 4521. The DRE compares year-over-year totals; large unexplained swings trigger inquiry letters.
- Independent CPA review (if applicable). Brokers servicing $500,000+ in trust funds for note holders must attach a CPA-reviewed report under §10232.2(a)(3).
If anything on this list is missing, stop and gather it. The DRE Audit Manual makes clear that incomplete filings are treated as non-filings for penalty purposes.
Where to Get the Form and How to Access It
The official, current Form RE 4521 lives on the DRE Forms page as a fillable PDF. Always download a fresh copy at the start of each filing year because the DRE silently updates the PDF when statutes change. Older saved copies often have outdated box labels or missing attestation language, and the DRE will reject them on intake.
You can also access the form through the DRE eLicensing portal once you log in with your broker license number and password. The portal version pre-fills your name, license number, main office address, and fiscal year-end based on your license record. This is the fastest path because it eliminates transcription errors on the identification block.
If you prefer paper, you may print the PDF and complete it by hand or by typewriter, but the DRE strongly prefers typed entries because handwritten figures jam the optical-character-recognition intake. The Spanish-language community can request a translated walkthrough from the DRE Public Information line at (877) 373-4542, but the form itself is filed only in English. Brokers using a third-party service like a CPA firm should still personally sign Section V because the signature must be the broker’s, not the preparer’s.
Step-by-Step: How to Fill Out Form RE 4521 Line by Line
The form is organized into five sections plus a certification block. Work top to bottom and do not skip blank fields. The DRE treats a blank required field as a defective filing, even if the answer would be zero. Where a field allows zero, write 0 — never leave it empty.
Section I, Box 1 — Broker Name
This box asks for the exact legal name on your broker license, not a marketing name or DBA. Enter the name as it appears on your wall license, in all caps, with no abbreviations except those the DRE itself uses. Example: MARIA L. RODRIGUEZ writes her name exactly as her individual broker license shows it.
If you hold a corporate license, enter the corporation’s full legal name and add , INC. or , LLC as appropriate. The nuance most filers miss is the DBA question — if you operate under a fictitious business name, the DBA goes in Box 2, never Box 1. A common mistake is entering the DBA here because clients know the broker by that name; the consequence is automatic rejection because the name will not match the license database. The misconception is that “broker name” means “the name on my business card.” It does not. It means the licensee of record.
Section I, Box 2 — Broker License Number and NMLS ID
This box collects your eight-digit DRE broker license number and your NMLS unique identifier. Enter the DRE number first, then the NMLS ID on the line below. Example: 01987654 for the DRE number and 1234567 for the NMLS ID.
Format both numbers with no dashes, spaces, or letters. The nuance is that some older brokers licensed before NMLS integration may not have an NMLS ID; in that case, write N/A and attach a brief explanation. The common mistake is transposing digits, which causes the DRE intake software to associate your filing with another broker’s record. The misconception is that the NMLS ID is optional; under the SAFE Act implementation rules, it is mandatory for any broker doing residential mortgage activity.
Section I, Box 3 — Main Office Address
Enter the physical address of your main licensed office, not a PO Box, not a mail-drop, and not your home if your home is not the licensed location. Use the format: street number, street name, suite, city, state, ZIP. Example: 742 Evergreen Terrace, Suite 200, Sacramento, CA 95814.
The nuance is that virtual brokers operating from a residence must list the residence if that is the address of record on the license. The common mistake is entering a UPS Store mailbox; the DRE checks the address against its license database and a mismatch flags the filing for a license-record audit. The misconception is that you can “update” your address on the form itself. You cannot — address changes require a separate RE 204 Branch Office Notification filed before RE 4521.
Section I, Box 4 — Fiscal Year Reporting Period
This box asks for the start and end dates of the fiscal year you are reporting. Enter both dates in MM/DD/YYYY format. Example: 01/01/2025 to 12/31/2025 for a calendar-year filer.
The nuance is consistency — once you elect a fiscal year, the DRE expects you to keep it. Switching from calendar year to a 6/30 fiscal year requires written notice to the DRE Mortgage Loan Activities Unit. The common mistake is reporting only a partial year because you started mid-year; the consequence is the DRE treats the gap as unreported activity and issues a citation. The misconception is that “fiscal year” means “the year I file.” It means the year being reported, which is always the year just ended.
Section II, Box 5 — Loans Negotiated
Enter the count of loans negotiated during the reporting period and the aggregate principal in dollars. A “negotiated” loan is one where you, as broker, brought borrower and lender together. Example: Carlos Mendoza, a sole-proprietor broker, writes 18 in the count column and $4,275,000 in the dollar column.
The nuance is that a loan you negotiated and funded yourself counts here, not in Box 6. The common mistake is double-counting the same loan in both Box 5 and Box 6, which inflates totals and invites audit. The misconception is that pre-approvals or applications that did not close are negotiated loans; only funded loans count.
Section II, Box 6 — Loans Made
This box captures loans where you, the broker, lent your own funds or your principal’s funds directly. Enter both the count and the aggregate dollar amount. Example: 2 loans for $310,000 if you funded two small bridge loans from your own capital.
The nuance is the §10240 disclosure interaction — every loan made must have had a Mortgage Loan Disclosure Statement (RE 882) delivered to the borrower. The common mistake is including loans where you were merely a correspondent for an institutional lender; those go in Box 5. The misconception is that “loans made” means “loans I closed.” It specifically means loans where you were the lender of record at closing.
Section II, Box 7 — Loans Serviced
Enter the count of loans you serviced for note holders during the year and the aggregate unpaid principal balance at year-end. Example: 47 loans serviced with $8,920,000 in aggregate UPB at 12/31/2025.
The nuance is that “servicing” under §10232.2 means collecting payments and remitting to a lender or note holder, not simply tracking your own portfolio. The common mistake is leaving this blank when you collect even a single payment for an investor; that triggers a trust-fund deficiency citation. The misconception is that one-time payoff handling is not servicing — under DRE policy, even one collected payment crosses the line.
Section II, Box 8 — Multi-Lender Transactions
Report loans arranged under §10238 where two or more investors funded a single note. Enter both the count and the aggregate principal. Example: 3 multi-lender transactions totaling $1,650,000.
The nuance is the 10-investor cap per loan; exceeding it converts the transaction into a securities offering subject to Department of Financial Protection and Innovation jurisdiction. The common mistake is treating a husband-and-wife joint investor as two investors; they count as one. The misconception is that multi-lender deals are also reported in Box 5; they are reported only in Box 8 to prevent double counting.
Section III, Box 9 — Trust Fund Receipts
Enter the total dollar amount of trust funds you received during the reporting year on behalf of others. Example: $1,420,500 in total receipts.
The nuance is that this number must reconcile to the deposits column of your trust account ledger required by §10145. The common mistake is reporting net receipts after refunds; the DRE wants gross receipts. The misconception is that personal commissions held briefly in trust are excluded; they are included until disbursed to the broker’s general account.
Section III, Box 10 — Trust Fund Disbursements
Enter the total disbursements out of trust during the year. Example: $1,388,250 disbursed.
The nuance is that the difference between Box 9 and Box 10 must match the change in your trust account balance from the start to end of the fiscal year. The common mistake is omitting bank fees that were paid from broker funds rather than trust funds; if any fees were paid from trust, they must appear here. The misconception is that intra-account transfers between two trust accounts are disbursements; they are not.
Section III, Box 11 — Trust Fund Year-End Balance
Enter the trust account balance as of the last day of your fiscal year. Example: $32,250.00 at 12/31/2025.
The nuance is that the balance must match your bank statement and your trust ledger to the penny. The common mistake is reporting the ledger balance without reconciling outstanding checks; the consequence is a trust-fund shortage citation. The misconception is that the figure can be “approximately” correct; the DRE requires exact reconciliation.
Section IV, Box 12 — Threshold Status
Check the box that indicates whether you exceeded the §10232 threshold during the year. Options are Yes — first year above threshold, Yes — continuing, or No — below threshold but voluntarily reporting.
The nuance is that first-time threshold filers must have already submitted RE 853 within 30 days of crossing the line. The common mistake is checking No when you crossed the threshold mid-year; that creates a false statement under §10232.5. The misconception is that voluntary reporting protects you from audit; it does not.
Section V, Box 13 — Broker Certification and Signature
This is the attestation block where the broker signs under penalty of perjury that the figures are true and correct. Sign in blue or black ink, print your name, write your license number, and date the form. Example: Maria L. Rodriguez, license 01987654, dated 03/15/2026.
The nuance is that the signature must be the broker’s, not a CPA’s, attorney’s, or office manager’s. The common mistake is having an unlicensed assistant sign — that is a §10177 violation by itself. The misconception is that an electronic signature is not allowed; the DRE accepts DocuSign and similar e-signature platforms for portal filings.
Three Filled-Out Examples Using Real Scenarios
Reading the form once is not enough. Walking three named brokers through it from top to bottom shows how the boxes interact. The three scenarios below cover the most common filer profiles the DRE sees each year.
Scenario 1 — Carlos Mendoza, Solo Broker Just Above Threshold
Carlos is a solo broker in Fresno who crossed the threshold for the first time in 2025. He negotiated 22 loans, made none, and serviced none.
| Form Section | What Carlos Enters |
|---|---|
| Box 1 — Broker Name | CARLOS A. MENDOZA |
| Box 2 — License / NMLS | 01776543 / 2098771 |
| Box 3 — Main Office Address | 1490 Shaw Avenue, Suite 12, Fresno, CA 93710 |
| Box 4 — Fiscal Year | 01/01/2025 to 12/31/2025 |
| Box 5 — Loans Negotiated | 22 / $5,180,000 |
| Box 6 — Loans Made | 0 / $0 |
| Box 7 — Loans Serviced | 0 / $0 |
| Box 12 — Threshold Status | Yes — first year above threshold |
| Box 13 — Signature | Carlos A. Mendoza, 03/05/2026 |
Scenario 2 — Sierra Pacific Mortgage, Inc., Corporate Broker With Multi-Lender Activity
Sierra Pacific is a corporate broker arranging trust deed investments for high-net-worth investors. Designated officer Janet Park signs.
| Form Section | What Sierra Pacific Enters |
|---|---|
| Box 1 — Broker Name | SIERRA PACIFIC MORTGAGE, INC. |
| Box 2 — License / NMLS | 01334455 / 654321 |
| Box 3 — Main Office Address | 4500 Park Granada, Suite 220, Calabasas, CA 91302 |
| Box 4 — Fiscal Year | 07/01/2024 to 06/30/2025 |
| Box 5 — Loans Negotiated | 14 / $11,250,000 |
| Box 8 — Multi-Lender Transactions | 9 / $7,400,000 |
| Box 9 — Trust Fund Receipts | $2,180,000 |
| Box 11 — Trust Fund Year-End Balance | $48,720.16 |
| Box 13 — Signature | Janet S. Park, Designated Officer, 09/12/2025 |
Scenario 3 — Aisha Williams, Servicing-Heavy Broker
Aisha runs a small Sacramento brokerage that focuses on servicing seller-carryback notes for retired investors.
| Form Section | What Aisha Enters |
|---|---|
| Box 1 — Broker Name | AISHA J. WILLIAMS |
| Box 2 — License / NMLS | 02112233 / 1908877 |
| Box 3 — Main Office Address | 1015 K Street, Suite 408, Sacramento, CA 95814 |
| Box 4 — Fiscal Year | 01/01/2025 to 12/31/2025 |
| Box 5 — Loans Negotiated | 6 / $1,200,000 |
| Box 7 — Loans Serviced | 83 / $14,650,000 |
| Box 9 — Trust Fund Receipts | $1,920,400 |
| Box 10 — Trust Fund Disbursements | $1,898,225 |
| Box 11 — Trust Fund Year-End Balance | $22,175.00 |
| Box 13 — Signature | Aisha J. Williams, 02/28/2026 |
How to File the Completed Form
You may file RE 4521 through three channels. Each has a specific address, fee structure, and proof of filing you must keep. The DRE accepts the earliest postmark, portal timestamp, or in-person stamp as the filing date.
Online via the DRE eLicensing portal. Log in at the DRE eLicensing portal, select Mortgage Loan Activity Report, upload your completed PDF and any attachments, and submit. There is no filing fee. Processing time is typically 10 business days, and your proof of filing is the confirmation email and the portal-generated transaction number — save both as PDFs.
By mail. Send the original signed form, with attachments, to California Department of Real Estate, Mortgage Loan Activities Unit, P.O. Box 137007, Sacramento, CA 95813-7007. There is no filing fee. Use USPS Certified Mail with Return Receipt because the green card is your only proof of filing. Processing takes 4–6 weeks.
In person. Hand-deliver to the DRE Sacramento headquarters at 1651 Exposition Boulevard, Sacramento, CA 95815. The clerk date-stamps your copy at the counter, which becomes your proof of filing. There is no fee, but the office is open only Monday–Friday, 8 a.m. to 5 p.m., excluding state holidays.
Whichever channel you use, keep a complete file copy with all attachments for four years under §10148. DRE auditors can demand it during any routine inspection.
What Happens After You File
Once filed, the report enters the DRE’s Mortgage Loan Activities Unit review queue. A reviewer compares your figures to your prior year filing, your trust account history, and any consumer complaints in your file. Routine filings clear in 4–8 weeks with no further contact.
If something looks off, the DRE sends a Request for Additional Information letter, usually within 60 days. You typically have 30 days to respond with documentation. Failure to respond converts the inquiry into a formal investigation under §10176.
In rare cases, the DRE schedules a desk audit or field audit. The DRE Audit Manual describes the scope, but plan on producing trust ledgers, loan files, and disclosure records for the entire reporting period. Marcus Liu, an Oakland broker audited in 2024, told industry press that the audit covered three full days; his clean RE 4521 reduced the scope significantly because the auditor used it as the roadmap.
Mistakes to Avoid When Filling Out the Form
Form RE 4521 has more failure points than most DRE forms because every figure must reconcile to outside records. Avoid these specific mistakes:
- Using last year’s PDF. The DRE rejects superseded versions; download a fresh PDF each year.
- Leaving zero fields blank. A blank field is treated as defective; write 0.
- Mixing fiscal year and calendar year data. All figures must come from the same reporting period.
- Reporting net trust receipts. The DRE wants gross; netting triggers a citation.
- Double-counting loans. A loan goes in Box 5 or Box 6 or Box 8, never two at once.
- Forgetting RE 4524. The Trust Fund Status Report is a required attachment when trust funds are handled.
- Wrong signatory. Only the broker may sign; an unlicensed assistant signing is its own §10177 violation.
- Skipping the threshold notification. Filing RE 4521 before RE 853 creates a sequence error that delays processing.
- Mailing without certified tracking. Without proof of mailing, a lost form equals an unfiled form for penalty purposes.
- Late filing past the 90-day window. The penalty starts at $50 per day and accrues until receipt.
- Inconsistent NMLS ID. The DRE pulls the NMLS record; a mismatch holds the filing.
- Handwritten illegible figures. OCR jams reject the form; type all entries.
Do’s and Don’ts
The following short lists capture the habits of brokers whose filings clear without inquiry.
Do:
- Reconcile every Section III figure to your bank statements before signing, because unreconciled trust numbers are the top audit trigger.
- File through the DRE eLicensing portal when possible, because the portal pre-fills identification fields and reduces transcription errors.
- Keep a four-year file copy with all attachments under §10148 because DRE auditors will demand it.
- File at least 30 days before the deadline because portal outages do happen near the cutoff.
- Use the current Rev. 10/23 PDF or its successor because superseded versions are rejected on intake.
- Have a CPA review the report if you service more than $500,000 in trust, because §10232.2(a)(3) requires it for that volume.
Don’t:
- Don’t sign the form until every figure ties to a source document, because a signed inaccurate form is a perjury exposure.
- Don’t mail the original without certified tracking, because lost forms equal unfiled forms.
- Don’t combine multiple DBAs onto one form, because each licensed entity files separately.
- Don’t let a CPA or attorney sign in your place, because only the broker of record may sign Box 13.
- Don’t include personal residence loans where you were the consumer, because those are not covered transactions.
- Don’t skip Box 12 thinking the threshold question is optional, because that triggers automatic rejection.
Pros and Cons of Filing on Your Own vs. With Help
Brokers debate whether to file RE 4521 in-house or hire a CPA or compliance consultant. Each path has tradeoffs.
Pros of filing on your own:
- No fee saves the typical $1,200–$2,500 a CPA would charge.
- You learn your own books deeply, which improves day-to-day compliance.
- You control timing and avoid waiting on a third-party schedule.
- You build direct familiarity with the DRE eLicensing portal, which speeds future filings.
- You eliminate the engagement letter and confidentiality coordination overhead.
Cons of filing on your own:
- You miss the second set of eyes that catches reconciliation errors before submission.
- You bear full §10232.5 perjury exposure with no professional buffer.
- You absorb time cost that could be billable to clients.
- You may misclassify loans between Box 5, 6, and 8 without realizing it.
- You will not have a CPA review attached, which is mandatory for $500,000+ servicers under §10232.2(a)(3).
Annual vs. Threshold-Triggered Filing
Brokers often confuse the two filing triggers. The table below clarifies how each works under California law.
| Filing Trigger | What It Requires |
|---|---|
| Annual Mortgage Loan Activity Report | Filed within 90 days after fiscal year-end by every broker who met the §10232 threshold during the year |
| Threshold Notification (RE 853) | Filed within 30 days of crossing the threshold, before the first RE 4521 |
| Trust Fund Status Report (RE 4524) | Attached to RE 4521 whenever trust funds were handled during the year |
| CPA-Reviewed Report | Required attachment when servicing exceeds $500,000 in trust funds for note holders |
Frequently Asked Questions
Do I file RE 4521 if I only had one loan all year?
No. A single loan does not meet the §10232 threshold of 20 loans or $2,000,000 in aggregate principal. You file only if you crossed either the count or the dollar trigger.
Is the filing fee really zero?
Yes. The DRE charges no fee for RE 4521 through any channel. Penalties only apply if you file late or not at all.
Can my CPA sign Box 13 for me?
No. Only the licensed broker of record may sign. A CPA may prepare the figures, but the broker must personally sign under penalty of perjury.
What goes in Box 4 if my fiscal year ended mid-year?
Yes, write the actual start and end dates of your elected fiscal year, such as 07/01/2024 to 06/30/2025. The DRE tracks fiscal year consistency across filings.
Do I include loans I only originated as an MLO under another broker?
No. Those loans belong on your employing broker’s RE 4521, not yours. Individual MLOs do not file separately.
What if Box 11 trust balance does not match my bank statement exactly?
No, that is not acceptable. The figure must reconcile to the penny; mismatches trigger trust-fund shortage citations under §10145.
Can I e-sign through DocuSign?
Yes. The DRE eLicensing portal accepts standard e-signature platforms for portal filings.
Do I write my DBA in Box 1?
No. Box 1 takes the legal licensee name only. The DBA, if any, goes in Box 2 or the designated DBA field on the current revision.
Is RE 4524 always required?
No, RE 4524 is required only when you handled trust funds during the reporting year. Brokers with no trust activity skip it.
What is the penalty for filing 30 days late?
Yes, the penalty is $50 per day, so 30 days late costs $1,500 plus possible license discipline under §10177.
Do I file separately for each branch office?
No. One RE 4521 covers all branches under a single broker license. Branch offices are tracked separately on RE 204.
Can I amend a filed RE 4521 if I find an error?
Yes. File a corrected form marked AMENDED at the top, along with a brief letter explaining the change, through the same channel as the original.
Do I need to keep the form after filing?
Yes. Under §10148 you must retain a complete file copy with attachments for four years from the filing date.
Does the threshold reset each year?
Yes. Each fiscal year stands on its own. If you fall below the threshold, you do not file for that year, but you file RE 853 again the next time you cross it.
Related reading
- How to Fill Out California Form RE 227 (w/Examples) + FAQs
- How to Fill Out California Form RE 4053 (w/Examples) + FAQs
- How to Fill Out California Form RE 851 (w/Examples) + FAQs
- How to Fill Out California Form RE 859 (w/Examples) + FAQs
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