Before You Sue Your Lawyer: The Evidence Checklist

Gathering evidence takes time, and the statute of limitations keeps running while you do it. In California, you generally have one year from discovering the lawyer's mistake, and never more than four years from the act, to file (Code of Civil Procedure § 340.6). Texas allows two years (Willis v. Maverick, 1988), Florida two years from discovery (Fla. Stat. § 95.11), and New York three years (CPLR 214(6)).

Write down the date you first learned something was wrong, and how you learned it. That date can matter under the discovery rule. Then look up your state on the statute of limitations table. If the deadline is close, contact a malpractice lawyer before you finish the rest of this list.

A malpractice claim starts with a duty, which usually means you were the lawyer's client. The legal term for that relationship is privity, and some statutes limit malpractice claims to it: Florida's two-year malpractice limit applies only to persons in privity with the professional. Gather:

• The engagement letter or retainer agreement, and any amendments
• The fee agreement. Under ABA Model Rule 1.5(c), a contingent fee agreement must be in a writing signed by the client, so if you had one, it should exist.
• Your first emails or intake forms, and any court filing listing the lawyer as your attorney
• Payment records: canceled checks, card statements, receipts
• Any letter ending the representation, from you or from the lawyer, which can matter for deadline rules tied to when the representation ended

If there was never a written agreement, do not assume you have no claim. Courts in many states can find an attorney-client relationship from the way the lawyer and client acted, even without a signed agreement. Gather the emails, texts, and notes that show the lawyer giving you legal advice and you relying on it, along with any invoices or payments.

The engagement letter also shows the scope of the job. A lawyer hired only to review a lease is not usually responsible for a lawsuit they were never asked to handle.

Your client file is the single most useful piece of evidence. ABA Model Rule 1.16(d) requires a lawyer, when a representation ends, to surrender papers and property the client is entitled to and refund any advance fee that has not been earned. Some states go further. Louisiana's version says that on written request the lawyer must promptly release the entire file to the client or new lawyer, and may not condition release on copying costs.

1. Send a written request by email and by a trackable method. Ask for the complete file, including correspondence, pleadings, discovery, research, and notes the rules in your state allow.
2. Keep a copy of the request and proof of delivery.
3. If the lawyer refuses or stalls, your state bar may help, and the refusal itself can be the basis of a bar grievance.

Our guide on how to get your case file from your lawyer has more detail.

You need to show what the lawyer did or failed to do, and when. The lawyer is judged against the standard of care, so dates and specifics matter.

• The court docket and orders. The docket lists every filing with its date. A dismissal order, default judgment, or sanctions order often states the reason in plain words.
• Every communication. Emails, texts, letters, and voicemails with the lawyer and staff. Save them in original form, with dates and sender details intact.
• Settlement paperwork. Offers, demand letters, and anything signed on your behalf. If a settlement happened without your approval, this is the core proof. See settled without consent.
• Documents the lawyer drafted. Contracts, deeds, wills, trusts, or filings with the errors. See drafting errors.
• A dated timeline of events, calls, and what you were told. Write it now, and note which entries are from memory.

Not sure the problem qualifies? Compare it to the 12 signs your lawyer is committing malpractice and what is not legal malpractice.

This is where many claims fail. A mistake without a loss is not a claim. The Texas Supreme Court has said a lawyer can be negligent and yet cause no harm (Rogers v. Zanetti, 2017). If the mistake was in a lawsuit, you usually have to prove you would have won or done better, which courts call the case within a case. Gather:

• Evidence from the original case: police reports, medical records, contracts, witness names, and expert reports that were or should have been used
• The result you got and the result you expected, with anything that supports the higher figure (offers, verdicts in similar cases your lawyer cited, appraisals)
• Proof the other side could have paid: insurance information, business assets, or a policy limit disclosure. This is collectibility.
• Costs of fixing the mistake: new lawyer invoices, court costs, penalties, and interest. New York's highest court has held that malpractice damages may include litigation expenses incurred to avoid, minimize, or reduce the harm the lawyer caused (Rudolf v. Shayne, 2007).
• Money trail: trust account statements and settlement disbursement sheets, if money is missing. See stolen client funds.

For how these add up to a number, see how much a legal malpractice case is worth.

A malpractice attorney will often decide whether to take a case based on the first look at your materials. Make that look easy.

1. Write a one-page summary. Who the lawyer was, what they were hired to do, what went wrong, when you found out, and what it cost you. Plain sentences, no adjectives.
2. Put documents in date order. One folder, paper or digital, with files named by date and a short description, such as 2025-03-14 dismissal order.
3. Build a short index. A simple list of every document with its date and one line on why it matters.
4. Separate the two cases. Keep evidence about the lawyer's conduct apart from evidence about the original matter. The attorney will evaluate both.
5. Note what is missing. If the lawyer has not released the file, say so and include your written request.

If a relative or friend helped you deal with the lawyer, ask them to write down what they saw and heard too, with dates. Their notes can fill gaps in your own memory.

Keep originals yourself and share copies. If you have to choose what to bring first, bring the engagement letter, the order or document that shows the mistake, and your summary.

• Do not sign a release or settlement from the lawyer. Under ABA Model Rule 1.8(h), a lawyer may not settle a malpractice claim with an unrepresented client unless the client is advised in writing to seek independent counsel and given a reasonable opportunity to do so. Get that advice before you sign.
• Do not let the original case lapse. If the matter is still open, its deadlines keep running. A new lawyer may be able to fix the problem, which protects you more than any later lawsuit. See how to fire your lawyer.
• Do not edit or delete anything. Keep emails, texts, and files exactly as they are, even the ones that make you look bad. Altered evidence can sink a strong claim.
• Do not post about it. Online reviews and social posts about the lawyer can be used against you and can create new legal problems. Wait until you have advice.
• Do not rely on the lawyer's explanation of your deadline. The person who made the mistake is not the right person to tell you how long you have to sue them.

If what you are really dealing with is a billing dispute or conduct problem rather than a loss, the evidence you gather here is still useful for a fee arbitration request or a grievance. See legal malpractice vs. a bar complaint.

Item	Proves	Where to get it
Retainer and fee agreement	Duty and scope	Your records, the file
Complete client file	What the lawyer did	Written request
Docket and court orders	Deadlines and dismissals	Court clerk or online
Emails, texts, letters	What you were told	Your devices and inbox
Bills and trust statements	Fees and missing money	Your records, the lawyer
Original case evidence	Case within a case	The file, public records
Proof of loss and fix costs	Damages	New lawyer, receipts
Dated timeline	Sequence and discovery date	You, written now

Two more questions a malpractice attorney will ask: does the lawyer carry malpractice insurance, and will you need an expert witness? See does your lawyer have malpractice insurance and the expert witness guide. Then read how to sue your lawyer for the next steps.

Once you have the basics together, a free case review takes about two minutes and can connect you with an independent attorney in your state who handles legal malpractice claims.