Hiring and paying for criminal defense counsel on an impaired driving charge in Washington State
How to check what a flat fee covers on a Washington impaired driving case, which costs sit outside it, and what triggers a second quote.

A flat fee for an impaired driving case in Washington is not a price for the case. It is a price for a defined stretch of the case, and the definition sits somewhere in the middle of the fee agreement, usually in a paragraph headed scope of representation. A careful reader finds that paragraph before looking at the dollar figure, because the figure means nothing until the stretch is known. Two attorneys quoting the same amount can be selling work that differs by months, by several hearings, and by a jury trial.
Scope clauses tend to end at one of a few places: arraignment and one pretrial hearing, resolution by plea, the conclusion of a motion to suppress, or verdict. The most common structure in district and municipal court work is a fee that runs through pretrial motions and any negotiated resolution, with trial priced separately. Read the sentence twice, because the difference between representation through pretrial proceedings and representation through disposition is real money. If the agreement does not name a stopping point, ask the attorney to write one in before signing.
The second thing worth locating is whether the administrative license case is inside the number. Washington's Department of Licensing runs a separate hearing on the suspension that follows an arrest, and it is a different forum with a different record and its own deadline. Many agreements treat it as a distinct engagement with its own fee, some fold it in, and a few are silent, which is the version that produces the argument later. A single added sentence naming the hearing, or excluding it, settles the question for good.
The two structures behave differently the day you pay. A retainer against hourly billing is your money held in the attorney's trust account and drawn down as time is recorded, so the agreement should state the hourly rate, the billing increment, who else bills to the file and at what rate, and what happens if the retainer runs out mid-case. A flat fee may be treated as earned upon receipt, which moves it out of trust and into the firm's operating account. Washington's professional conduct rules require that arrangement to be explained in writing, including your right to a refund of any unearned portion.
That refund language repays close reading. Some agreements set out a schedule, so much earned at arraignment, so much at the close of discovery review, so much at the start of trial, which gives both sides a clear answer if the case ends early or the relationship ends midstream. Others say only that a reasonable amount will be refunded, which is an answer that has to be negotiated later, when the parties are less friendly than they are at signing. A milestone schedule costs nothing to request and removes the ambiguity.
Fees pay for the attorney's time. Costs pay for everything else, and the agreement almost always separates them in a short clause that is easy to skim past. On an impaired driving case the usual candidates are an independent toxicologist to review breath instrument records or a blood retest, a private investigator to locate and interview witnesses or photograph the stop location, transcripts of the hearing recording, subpoena service, expert witness fees for trial testimony, and interpreter costs where the court does not supply one. The National Highway Traffic Safety Administration oversees the federal impaired driving programs and the field sobriety testing curriculum that experts on both sides work from, which is part of why qualified reviewers are not cheap.
Check who authorizes a cost and at what threshold. Good agreements say the attorney will obtain written approval before incurring any expense above a stated dollar amount, and will provide an estimate first. Check also whether the attorney advances costs and bills you afterward, or requires a deposit up front. If a toxicologist is likely on your facts, ask during the consultation for the range that expert has charged before, and get the answer in the file note.
Somewhere near the end there is language about changed circumstances. It typically names a handful of events: the case being set for trial, a new charge or an amended information, transfer to superior court, a probation violation, a motion to withdraw a plea, or an appeal. Each of these opens a new engagement letter with a new number, which is the honest way to handle work nobody could scope at the outset. Ask the attorney to state the trial fee at signing, even though trial is unlikely, because a figure quoted now is a figure quoted while you still have the option to hire someone else.
The agreement you want is the one where nothing in it surprises you six months in. That is achievable with a pen and twenty minutes, marking the scope endpoint, the license hearing, the earned-on-receipt language, the cost approval threshold, and the trial number, then handing the marked copy back with questions. Attorneys who price this work regularly expect exactly that conversation and answer it in specifics.