William R. DeHaan, Business Attorney in Phoenix, Arizona
Phoenix, AZ
Trusted business attorney serving Phoenix.
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Quick answer
William R. DeHaan is an attorney based in Phoenix, ARIZONA. The practice focuses on Business.
- Based in
- Phoenix, ARIZONA
- Experience
- attorney
- Known for
- Business
- Handles Business matters from Phoenix, ARIZONA.
- Recognized with Lawyer of the Year — Public Finance Law (Phoenix) (2014).
About William R. DeHaan: William R. DeHaan is an attorney based in Phoenix, ARIZONA. The practice focuses on Business.
Areas of practice
William's practice areas in Phoenix
William concentrates on business. Each area below outlines the kind of case William handles, typical outcomes to expect, and how the intake process starts.
Business cases in Phoenix, Arizona
William takes business matters in Phoenix, Arizona. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before William agrees to represent you.
Biography
William R. DeHaan, business attorney serving Phoenix
William R. DeHaan is an attorney based in Phoenix, ARIZONA. The practice focuses on Business. William works from Phoenix, Arizona and takes on business matters across the region.
William R. DeHaan has focused his practice in the area of municipal finance since 1986. He has served as bond counsel, underwriter's counsel, issuer's counsel and trustee's counsel in an extensive range of municipal financings, including general obligation, enterprise (utility) revenue, school district, housing, student loan, 501(c)(3) and special districts. Prior to joining the firm in 2001, Bill was the office managing partner for the Phoenix office of a national law firm.
Working with William on a business matter
William R. DeHaan has focused his practice in the area of municipal finance since 1986. He has served as bond counsel, underwriter's counsel, issuer's counsel and trustee's counsel in an extensive range of municipal financings, including general obligation, enterprise (utility) revenue, school district, housing, student loan, 501(c)(3) and special districts. Prior to joining the firm in 2001,…
Who William represents
William reviews new inquiries case-by-case for business matters in Phoenix and the surrounding Arizona area.
Credentials
Credentials — where William studied and practices
University of Illinois College of Law
J.D. · 1986
Jurisdictions
William's state bar admissions
Arizona, State Bar o
ACTIVE
William studied at J.D. in University of Illinois College of Law.
Law school and academic background
William completed J.D. in University of Illinois College of Law. Formal legal training is one signal of substantive knowledge — the day-to-day practice William runs in Arizona is where that training gets applied to real client questions.
Recognition
William's legal honors and published work
William has received 10 formal recognitions from bar associations, industry bodies, and peer-review services.
Lawyer of the Year — Public Finance Law (Phoenix)
2014
Best Lawyers in America — Public Finance Law
2026
Best Lawyers in America — Special Focus:
2026
Best Lawyers in America — Financing via Property Taxation
2026
Best Lawyers in America — Municipal
2026
Best Lawyers in America — Project Finance
2026
Best Lawyers in America — Structured Finance
2026
Best Lawyers in America — Awards:
2026
Best Lawyers in America — Arizona's Finest Lawyers, 2011
2026
Best Lawyers in America — "Phoenix Public Finance Lawyer of the Year," Best Lawyers, 2014
2026
Legal awards and honors
Lawyer of the Year — Public Finance Law (Phoenix) (2014). Best Lawyers in America — Public Finance Law (2026). Best Lawyers in America — Special Focus: (2026). Best Lawyers in America — Financing via Property Taxation (2026). Best Lawyers in America — Municipal (2026). Best Lawyers in America — Project Finance (2026).
Locations
William R. DeHaan's office in Phoenix
William's primary office is at 2375 East Camelback Road, Suite 800, Phoenix, Arizona, 85016. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of William R. DeHaan
William has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
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Schedule your consultationHiring guide
How to hire William R. DeHaan — what to expect in your first consultation
Working with a new business attorney should feel structured. Here's how the first two conversations with William usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
William charges for the initial consult. That fee is credited toward representation if you retain William's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; William will tell you what matters and what doesn't.
Questions to ask a business attorney in Phoenix, Arizona
A short list to run through before you commit: How many business matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for William
William discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in business practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every business matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. William confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
William's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many business practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about William R. DeHaan
How much does it cost to hire William for a business case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. William walks through the likely range during the consult so there are no surprises.
Does William offer a free consultation?
William charges for the initial consult; that fee is credited toward representation if you retain William's office. Some business attorneys offer free consults — check William's current terms during booking.
How long do business cases in Arizona typically take?
Simple business matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. William gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can William take my case if I'm outside Phoenix?
William is licensed in Arizona. Matters governed by Arizona law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — William will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with William?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. William will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is William accepting new business clients right now?
William's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Business attorneys serving Phoenix, Tucson and Scottsdale in Arizona
William handles business matters throughout Arizona. Each city below is a direct link into the search page for verified business attorneys in that community.
More counsel
Other top-rated business attorneys in Arizona
If William's intake is full or the fit isn't right, these business attorneys in Phoenix handle similar matters. Every profile below is verified and open to consultations.





