An OWI arrest in Greenfield starts more than one deadline the same night, and they do not wait for you to catch your breath. If you refused the test, the 10-day window to request a refusal hearing runs from your Notice of Intent to Revoke; if you failed it, the 10-day window to request administrative review runs from your Notice of Intent to Suspend. Each clock anchors to its own notice — not to the moment you were released. Miss the deadline and the administrative suspension takes effect on its own 30 days after the Notice of Intent to Suspend is issued. Mays Law Office defends OWI charges — the offense most people search as DUI or DWI, though Wisconsin’s statutory charge is OWI — along with drugged-driving allegations, throughout Greenfield and Milwaukee County. Call 608-305-4518 for a free consultation before you say anything to anyone else about your arrest.

OWI Attorneys in Greenfield, WI

Attorney Stephen E. Mays has practiced law in Wisconsin since 1995 and was named a 2025 Wisconsin Super Lawyer in DUI/DWI defense. He belongs to the National Association of Criminal Defense Lawyers, the Wisconsin Association of Criminal Defense Lawyers, the Dane County Criminal Defense Lawyers Association, and the State Bar of Wisconsin. Greenfield is a dense suburb on Milwaukee’s southwest side — mostly retail corridors and neighborhood streets rather than open highway — and an OWI stop here can start with something as ordinary as a lane drift near a shopping center or a late-night traffic check. Where the charge lands, and how it was built, shapes the defense from the first day.

An OWI lawyer earns their fee in the specifics — whether the stop was lawful, whether the field sobriety tests actually show what the officer claims, whether the blood draw held up under the Fourth Amendment, and whether every deadline that protects your license was met. Those are the questions a case needs answered from the start.

When to Call Our Greenfield, WI OWI Lawyers

Reach out right away if any of this fits your situation:

• You were handed a “Notice of Intent to Revoke” after refusing a breath or blood test. You have 10 days from that notice to request a refusal hearing in writing — let that window close and the revocation runs automatically, and you forfeit the statutory chance to contest it.
• You took the test and the result was over the limit. That triggers a Notice of Intent to Suspend, and you have 10 days from that notice to request administrative review — otherwise a 6-month administrative suspension takes effect 30 days after the Notice of Intent to Suspend is issued.
• You already have an OWI on your record. A second offense is generally a criminal misdemeanor carrying 5 days to 6 months in jail when the prior was within the last 10 years. A third runs 45 days to a year. A fourth is a Class H felony.
• A child under 16 was riding with you. That one fact turns even a first offense into a criminal misdemeanor — a $350 to $1,100 fine and a mandatory 5 days to 6 months in jail.
• Someone was hurt. Causing injury to another person while intoxicated makes even a first offense a crime, and great bodily harm or death brings separate felony charges.
• You hold a CDL. A single OWI conviction — even in your own car — disqualifies your commercial privileges for a year, and a second lifetime conviction ends them for good.
• You were at 0.15 or above. On a first offense, that reading brings a mandatory one-year ignition interlock order.

What an OWI Conviction Costs in Wisconsin

Wisconsin writes its drunk-driving law under a single name — operating while intoxicated, or OWI. People search for DUI and DWI lawyers, but those are everyday labels for the same charge. What the charge costs you depends first on your history — and then on aggravating facts like a high BAC, a refusal, or a passenger under 16. A standard first offense is not a crime at all: it is a civil forfeiture of $150 to $300 plus a mandatory $435 surcharge, with no jail — but your license is revoked for six to nine months. A second offense becomes a criminal misdemeanor when the prior falls within the past ten years, carrying five days to six months in jail. At the third offense, the counting changes: every qualifying prior in your lifetime counts — including OWI convictions, implied-consent refusal revocations, OWI-related injury convictions, and comparable out-of-state offenses — and jail runs from 45 days up to a year. A fourth offense is a Class H felony punishable by 60 days to six years of imprisonment. Certain facts short-circuit that ladder entirely — a passenger under 16 turns even a first offense into a criminal misdemeanor with a $350-to-$1,100 fine and a mandatory five days to six months behind bars. An ignition interlock is required after a test refusal, a first offense at 0.15 or above, or any repeat offense. An occupational license may keep you driving to work, but eligibility is never automatic — it depends on the type of suspension, any interlock requirement, the rest of your record, and DMV approval. And whichever way your case starts, the license clocks run short: the 10-day refusal-hearing window runs from the Notice of Intent to Revoke, and the 10-day administrative-review window runs from the Notice of Intent to Suspend.

The fine on the citation is the smallest number in an OWI case. Wisconsin adds a mandatory $435 surcharge to every OWI conviction, and the court-ordered alcohol and drug assessment typically runs $165 to $500 depending on the county. If an interlock is ordered, plan on roughly $50 to $150 for installation and $60 to $100 a month while the order lasts. Getting your license back costs another $200 reinstatement fee, and SR-22 high-risk insurance keeps raising the price for years afterward. Add it together and a typical first offense lands between $4,000 and well over $10,000 all-in. Those are typical ranges, not quotes — your county, your vendor, and your insurer set the real numbers.

How OWI Cases Move Through Milwaukee County Courts

Where your Greenfield OWI is heard turns on the charge — and, for a civil first offense, on which agency issued the citation. A first-offense OWI is a non-criminal matter, and depending on the citing agency it may be handled in a municipal court or in the circuit court. In municipal court, the case is a civil forfeiture and the standard of proof is lower than in a criminal case: the citing authority must prove the violation by evidence that is “clear, satisfactory and convincing,” a middle standard set by Wis. Stat. § 800.08(3). It is not automatically routed one way or the other — the citing agency and the nature of the charge determine the venue.

Every criminal OWI — a second or subsequent offense, or a first offense involving a minor passenger or injury — is filed in the Milwaukee County Circuit Court and prosecuted under Wisconsin’s criminal rules. Milwaukee County runs one of the largest circuit courts in the state, with 47 branches operating primarily out of the courthouse complex at 901 N. 9th Street in Milwaukee. A second offense is generally criminal when the prior falls within the 10-year window; a third and any offense beyond it is criminal regardless of age. Sorting out which agency stopped you, which court your charge belongs in, and what the reports and video actually show is one of the first things our Wisconsin OWI defense practice works through.

The criminal track follows a set path. The arresting agency forwards its file for a charging decision; a criminal complaint issues; you make an initial appearance; contested issues get litigated at motion hearings; and if a pretrial conference produces no resolution, the case goes to trial, where the State must prove guilt beyond a reasonable doubt.

How We Defend OWI Charges

An OWI prosecution is a chain of moving parts, and each part can fail. The first is the stop itself: an officer needs reasonable suspicion to pull you over and probable cause to arrest, and when either is missing, a court can suppress the evidence gathered afterward. The second is the roadside testing. The three standardized field sobriety tests were validated on narrow research populations, and age, weight, injuries, medical conditions, footwear, and the weather can all generate “clues” in a perfectly sober driver. The third is the chemical evidence. A breath number at or near the legal limit — 0.08 for most drivers, though stricter limits apply behind the wheel of a commercial vehicle (0.04), for drivers under 21 (absolute sobriety), and for drivers under an interlock order or with three or more priors (0.02) — is a measurement, not a verdict — the reliability of chemical testing is one of the recognized fronts for challenging an OWI, and once you submit to the agency’s primary test, Wisconsin law lets you request the agency’s alternative test free of charge — or arrange a test of your own choosing at your own expense. Blood draws raise a separate constitutional question: taking blood is a Fourth Amendment search, and in State v. Prado (2021) the Wisconsin Supreme Court struck down the implied-consent provision that presumed consent from an incapacitated driver. Not every warrantless draw gets suppressed — the State can point to exceptions like exigent circumstances — but a draw taken without a warrant and without valid consent deserves scrutiny in every case. Finally, the State must prove “operation” — the physical manipulation or activation of a vehicle’s controls necessary to put it in motion. That element is fact-specific, and facts can be contested. Which of these doors is open in your case depends on the reports, the video, and the timeline — call 608-305-4518 before those details go cold.

We also handle the license side of the case — refusal hearings and occupational license applications. An occupational license is not automatic; eligibility depends on the type of suspension, any interlock requirement, other suspensions on your record, and DMV approval, so the paperwork is worth getting right the first time.

Greenfield OWI Questions We Hear Most

Will I go to jail for a first-offense OWI in Wisconsin?

For a standard first offense, no. Wisconsin is the only state that treats a first OWI as a non-criminal civil forfeiture — a fine and license revocation, but no jail. That changes fast if a child under 16 was in the car — a criminal misdemeanor with a mandatory 5 days to 6 months in jail — or if anyone else was injured, which also criminalizes the charge.

Where will my Greenfield OWI case actually be heard?

That depends on the charge. A civil first offense may be handled in a municipal court or in the Milwaukee County Circuit Court, depending on the agency that issued the citation — in municipal court it is a non-criminal forfeiture decided under the “clear, satisfactory and convincing” standard of Wis. Stat. § 800.08(3). Any criminal OWI — a second or subsequent offense, or a first offense with a minor passenger or injury — is filed in the Milwaukee County Circuit Court, one of the largest in the state at 47 branches, run primarily out of the courthouse complex at 901 N. 9th Street in Milwaukee. Which court your case belongs in is one of the first things we confirm.

Is a lawyer really worth it for a civil first offense?

The first offense is where the record starts. It cannot be expunged, it raises your insurance for years, it disqualifies commercial driving privileges for a year if you hold a CDL, and it sets the counting clock — a second OWI within 10 years is a crime, and it counts forever once you reach a third. Challenging a weak stop or an unreliable test is often the cheapest insurance you will ever buy.

Is refusing the test better than failing it?

They are two different problems, not a loophole and a trap. Refusal is a stand-alone violation: a first refusal brings a 1-year license revocation, a mandatory alcohol assessment, and a mandatory 1-year ignition interlock — and the refusal itself can be used as evidence against you in the OWI case. Failing the evidentiary chemical test — the breath, blood, or urine test after arrest, not the roadside preliminary breath test — instead triggers a 6-month administrative suspension. The two clocks anchor to different notices: the 10-day refusal-hearing window runs from the Notice of Intent to Revoke, and the 10-day administrative-review window runs from the Notice of Intent to Suspend. Which situation you are in changes the strategy — it does not change the urgency.

Get a Free Consultation

Se Habla Español — Call 608-305-4518

Whether this is a civil first offense or a felony repeat charge, the days right after a Greenfield OWI arrest are the ones that matter most. Mays Law Office represents clients across Wisconsin from our office in Middleton — including Greenfield and Milwaukee County. Call 608-305-4518 or contact Mays Law Office online for a free consultation. Mays Law Office, LLC — 6405 Century Ave STE 103, Middleton, WI 53562.