How Massachusetts Judges Decide Sealing and Expungement Petitions

By Attorney Joe Serpa | Georgetown University Law Center | 30 Years Massachusetts Criminal Defense

Clients ask about sealing and expungement more than almost any other topic, and the questions usually start from the same misconception, that a judge simply decides whether he feels the petitioner deserves it. Massachusetts law is far more structured than that. Each remedy has a defined standard, the standards have shifted sharply in the petitioner’s favor over the last decade, and a petition built to the standard wins far more often than one that just asks. This post walks through how judges decide, remedy by remedy. The full framework with statutes and case law is on our page covering Massachusetts sealing and expungement standards, and the practical basics are on our guide to sealing and expunging a Massachusetts record.

Many of these matters can be resolved well before trial. See how criminal cases get dismissed in Massachusetts.

Time-Based Sealing Under Section 100A

Convictions seal on a petition mailed to the Commissioner of Probation. Three years after a misdemeanor or seven after a felony, with no new convictions or incarceration in between, the Commissioner must seal, and no judge is involved. The waiting periods and the short list of offenses that can never be sealed, including intimidation of a witness and the other crimes against public justice, are laid out on the standards page. What sealing hides, and from whom, is covered in our guide to Massachusetts criminal records and CORI.

Judicial Sealing Is Where Advocacy Matters

Cases that ended without a conviction go through a judge, and two decisions control. A case that ended in a not guilty finding now seals immediately and mandatorily under Commonwealth v. J.F., 491 Mass. 824 (2023). A dismissed or nolle prossed charge seals when the petitioner shows good cause under Commonwealth v. Pon, 469 Mass. 296 (2014), and the Pon factors reward documentation. The specific doors the record is closing, the rehabilitation since, the time passed, and the reasons the case ended the way it did all belong in the petition with evidence attached. A dismissal that followed a hard-fought clerk-magistrate hearing or a favorable continuance without a finding (CWOF) that terminated cleanly gives the judge reasons to find that substantial justice favors sealing, and the petition should say so plainly.

Time-Based Expungement Under Sections 100F to 100J

Time-based expungement is the young person’s remedy, and it destroys the record rather than hiding it. The offense must have occurred before the petitioner’s twenty-first birthday. Three years must have passed for a misdemeanor or seven for a felony, with no new cases in between. A person gets at most two expunged records in a lifetime, and roughly twenty offense categories are excluded by Section 100J, including assault and battery with a dangerous weapon, firearms offenses, restraining order violations, sex offenses, and OUI. Meeting those limits does not compel an order. Expungement remains discretionary, and a decision on a petition is reviewed for abuse of discretion. Commonwealth v. K.W., 490 Mass. 619, 624 (2022). That case arose under the reason-based provision of M.G.L. c. 276, § 100K rather than the time-based sections, and it treats a conviction for possession of a now-decriminalized amount of marijuana as a strong candidate for expungement under that provision. Id. at 633. A time-based petition therefore rests on the statutory criteria and on the record the petitioner puts before the judge.

This is the remedy every former student defendant should be screened for, because a college case almost always happened before twenty-one and expungement answers graduate school, bar, and medical school application questions in the cleanest possible way. There is nothing left to disclose and nothing for the school to find. Our student defense FAQs walk through the application disclosure problem in detail, and our results page shows why the better path is preventing the record in the first place.

For-Cause Expungement Under Section 100K

For-cause expungement is a different animal, and the burden runs the other way. There is no age limit and no waiting period, but the petitioner must prove by clear and convincing evidence that the record itself is the product of something that should never have generated a record. The qualifying grounds are specific. Someone else used your name or identity and the case is really theirs. Fraud was perpetrated upon the court. Law enforcement, court employees, or witnesses committed demonstrable error. Or the conduct is no longer a crime at all, the ground that applies to old marijuana offenses after decriminalization. A Section 100K petition is won with proof, not presumptions, and it should be built like a small trial, with the police reports, court records, and identity documentation assembled before filing. Identity fraud victims should read our page on Massachusetts identity fraud and financial crimes, because the same evidence that clears your name supports the expungement.

For noncitizens, expungement questions should never travel alone. Federal immigration law keeps its own definition of conviction and does not always honor state record relief, which is explained on our immigration consequences page, and an old plea taken without the full statutory warning may be better attacked under the SJC’s Chhieng decision than sealed or expunged.

What People Get Wrong

The most common mistake is assuming everything can eventually be sealed. It cannot. Witness intimidation, perjury, and the other crimes against public justice under chapter 268 can never be sealed, and neither can state ethics offenses or firearms licensing offenses. Witness intimidation deserves special attention because prosecutors add it to ordinary domestic violence cases with regularity, and a conviction on that count is permanent in a way almost nothing else in District Court practice is. The second mistake is assuming a Massachusetts seal cleans up the FBI. It does not do so automatically. The FBI keeps its own fingerprint-based record, the DCJIS transmits sealing orders and requests updates, and careers built on federal background checks, from security clearances to banking to defense work, may still see the case. The third mistake is confusing the two expungement paths. Time-based petitioners rely on the statutory eligibility criteria. For-cause petitioners carry a strict burden of proof under Section 100K. A petition that cites the wrong standard invites the wrong ruling. The fourth mistake is waiting. A clerk-magistrate hearing won or a case dismissed before arraignment means there is never a record to seal at all, which is the outcome every remedy on this page is trying to approximate after the fact.

Building a Petition That Wins

Start with your own record. Pull your CORI through the iCORI personal request before filing anything, because petitions fail over surprises more than over law. Docket numbers get transposed, old defaults linger, and a case you forgot about can change which remedy fits. Then build the file the judge will read. A Pon petition should attach the job posting or license application the record is blocking, proof of what you have done since the case ended, and a short affidavit telling the story in plain terms. A time-based expungement petition should walk the eligibility elements one by one and document each of them, while a Section 100K petition needs the documentary evidence that proves its qualifying ground by clear and convincing evidence. Timing matters too. File the sealing petition in the court where the case ended, expect the District Attorney to receive notice, and be ready for a short hearing. Most petitions built this way are allowed without drama. Your right to see your own sealed file afterward is confirmed by Gravito v. Commonwealth, and the answers to the questions clients ask most are collected in our sealing and expungement FAQs.

Students, Professionals, and the Trades

The remedy that fits depends on who will be checking. A college or university student headed to graduate school, medical school, or the bar faces application questions that often reach conduct as well as convictions, so a student with an old case should be evaluated for expungement first, because a destroyed record answers every version of the question. A licensed professional needs to read the board’s question before relying on a seal, because many boards keep statutory access to sealed records, a problem mapped on our professional license consequences page and answered question by question in our licensed professionals FAQ. Tradespeople and most private-sector workers get the cleanest benefit, since M.G.L. c. 151B lets an applicant with a sealed record answer no record to employers.

Who Should Petition Now

Anyone with a not guilty finding still visible on a background check should act immediately, because J.F. makes that sealing mandatory. Anyone whose dismissal is costing them a job, a license, or an apartment has a Pon petition worth building. Anyone whose case arose before age twenty-one should be evaluated for time-based expungement. Anyone whose record came from identity fraud, fraud upon the court, decriminalized conduct, or official error has a for-cause path under Section 100K, provided the qualifying ground can be proven by clear and convincing evidence. And anyone still facing an open case should treat the clerk-magistrate hearing and the pre-arraignment window as the main event. Serpa Law Office handles all of it. Contact Serpa Law Office at 617.936.0201 for a confidential consultation.