Massachusetts Diminished Value Claims — The Complete Guide.

Massachusetts: Policy Edition Determines Coverage.

Massachusetts is the most procedurally complex state in this guide. Two competing Supreme Judicial Court decisions govern: McGilloway v. Safety Insurance (2021) held that the 2008 Standard Massachusetts Automobile Insurance Policy (Part 4) covers third-party DV claims. Cubberley v. Commerce Insurance (January 30, 2025) held that the 2016 Standard Policy explicitly excludes DV via an "any decreased value or intangible loss" exclusion that the Insurance Commissioner approved.

The practical implication: Massachusetts DV recovery now depends on which policy edition the at-fault driver carries. Policies issued before January 1, 2018 generally use the 2008 form (DV recoverable per McGilloway). Policies issued on or after January 1, 2018 generally use the 2016 form (DV excluded per Cubberley). Despite the policy change, the underlying tort right to DV recovery still exists — but recovery may require pursuing the at-fault driver personally rather than through their insurer.

Massachusetts: Two SJC Decisions Five Years Apart

Massachusetts DV law has shifted twice. Both Supreme Judicial Court decisions are recent and both control depending on policy edition.

Calculate the Loss First — Then Match to Policy.

In Massachusetts, calculating the actual DV is the first step regardless of the policy complications. If the at-fault driver carries a 2008-form policy, you'll pursue the insurer per McGilloway. If they carry a 2016-form policy, you'll need to decide whether to pursue the driver personally. Either way, a USPAP-compliant appraisal documenting the loss is the foundation.

Run the calculator to document the actual loss. Compare against the policy edition to determine recovery path:

Filing a Diminished Value Claim in Massachusetts.

Massachusetts requires a procedural decision tree. The first step is determining which policy edition applies. Then route the claim accordingly.

1. Document liability. Massachusetts applies modified comparative negligence under Mass. Gen. Laws ch. 231, § 85 — recovery barred if you're more than 50% at fault.
2. Determine the at-fault driver's policy edition. Critical first step in Massachusetts. Policies issued before January 1, 2018 are typically 2008 form (DV recoverable per McGilloway). Policies on or after January 1, 2018 are typically 2016 form (DV excluded per Cubberley). Request the policy edition from the insurer.
3. Complete repairs. Massachusetts DV is calculated post-repair regardless of policy edition. Document repairs comprehensively.
4. Establish pre-accident market value. Massachusetts-market comparables — Boston metro, Worcester, Springfield, Lowell, Cambridge, Brockton. Boston's high market values and dense data make comparable analysis robust.
5. Document post-repair value. Two written dealer trade-in offers post-repair plus comparable sales of similar Massachusetts vehicles with accident-history Carfax.
6. Prepare a USPAP-compliant appraisal. The appraisal cites McGilloway if applicable, addresses Cubberley if applicable, and uses Massachusetts-market comparables.
7. Send a demand letter — tailored to policy edition. If 2008 policy: cite McGilloway and demand coverage. If 2016 policy: cite the underlying tort right to DV and demand recovery from the at-fault driver personally (insurer will likely deny based on Cubberley).
8. Allow 30 days for response. Massachusetts insurers typically respond within 21-30 days. Cubberley denials require pivoting to direct pursuit of the driver.
9. File a Massachusetts Division of Insurance complaint. mass.gov/orgs/division-of-insurance handles complaints. DOI complaints add regulatory pressure but won't override Cubberley's exclusion ruling.
10. Small claims for $7,000 or less; District Court above. Massachusetts small claims is capped at $7,000. District Court handles up to $50,000 in some divisions. Note: Massachusetts law doesn't allow plaintiffs or defaulting defendants to appeal small claims decisions.

Massachusetts DV Questions