DM

Dennis M Horn, Business Attorney in Washington, District of Columbia

Over 50 years of legal practice · focused on Business, General, and M&A · 5.0/5 rating from 1 verified client review

PartneratHolland And Knight Llp

Washington, DC

Practicing business in Washington since 1976.

50+
Years practicing
5.0 ★
1 client review
2
Bar admissions

Are you Dennis M Horn?

This profile was built from public bar records and is still unclaimed. Claim it free to control your photo, bio, and fees — and get client inquiries sent straight to you.

Claim this profile — free

Quick answer

Dennis M Horn is a partner based in Washington, DC. The practice focuses on Business, General, and M&A. Dennis has over 50 years of legal experience. Currently practicing at Holland And Knight Llp. Rated 5.0 out of 5 from 1 client review.

Based in
Washington, DC
Experience
over 50 years
Known for
Business · General · M&A
  • Handles Business, General, and M&A matters from Washington, DC.
  • Over 50 years of practice as a licensed attorney.
  • Recognized with AV Preeminent.

About Dennis M Horn: Dennis M Horn is a partner based in Washington, DC. The practice focuses on Business, General, and M&A. Dennis has over 50 years of legal experience. Currently practicing at Holland And Knight Llp. Rated 5.0 out of 5 from 1 client review.

Areas of practice

Dennis's practice areas in Washington

Dennis concentrates on business, general, m&a, and real estate. Each area below outlines the kind of case Dennis handles, typical outcomes to expect, and how the intake process starts.

Business cases in Washington, District of Columbia

Dennis takes business matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Dennis agrees to represent you.

General cases in Washington, District of Columbia

Dennis takes general matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Dennis agrees to represent you.

M&A cases in Washington, District of Columbia

Dennis takes m&a matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Dennis agrees to represent you.

Real Estate cases in Washington, District of Columbia

Dennis takes real estate matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Dennis agrees to represent you.

Biography

Dennis M Horn, business attorney serving Washington

Dennis M Horn is a partner based in Washington, DC. The practice focuses on Business, General, and M&A. Dennis has over 50 years of legal experience. Currently practicing at Holland And Knight Llp. Rated 5.0 out of 5 from 1 client review. Dennis works from Washington, District of Columbia and takes on business matters across the region.

Dennis M Horn is a lawyer practicing construction / development, real estate, mergers and acquisitions and 3 other areas of law. Dennis received a M.S. degree from London School of Economics and Politics Science, and has been licensed for 50 years. Dennis practices at Holland & Knight LLP in Washington, DC.

Dennis's approach to business cases

Dennis M Horn is a lawyer practicing construction / development, real estate, mergers and acquisitions and 3 other areas of law. Dennis received a M.S. degree from London School of Economics and Politics Science, and has been licensed for 50 years. Dennis practices at Holland & Knight LLP in Washington, DC.

The kind of cases Dennis takes

Dennis reviews new inquiries case-by-case for business, general, and m&a matters in Washington and the surrounding District of Columbia area.

Credentials

Credentials — where Dennis studied and practices

  • University of Pennsylvania Law School J.D.

  • London School of Economics and Politics Science M.S. Planning Studies University of Rochester B.A. Economics and History University of Rochester B.A. magna cum laude

Jurisdictions

Dennis's state bar admissions

  • Florida

    1978 · ACTIVE

  • District of Columbia

    1976 · ACTIVE

Dennis studied at — in University of Pennsylvania Law School J.D. and — in London School of Economics and Politics Science M.S. Planning Studies University of Rochester B.A. Economics and History University of Rochester B.A. magna cum laude.

Law school and academic background

Dennis completed — in University of Pennsylvania Law School J.D. and — in London School of Economics and Politics Science M.S. Planning Studies University of Rochester B.A. Economics and History University of Rochester B.A. magna cum laude. Formal legal training is one signal of substantive knowledge — the day-to-day practice Dennis runs in District of Columbia is where that training gets applied to real client questions.

Recognition

Dennis's legal honors and published work

Dennis has received 1 formal recognition from bar associations, industry bodies, and peer-review services.

  • AV Preeminent

Legal awards and honors

AV Preeminent.

Affiliations

Dennis's professional memberships and bar associations

  • The District of Columbia Bar The Florida Bar American Bar Association

    Member, Sections on: Real Property Probate and Trust Law Leasing Publications Committee (Chair) Managing Editor, ABA Commercial Leasing Symposium, 1994-1996 · membership

Locations

Dennis M Horn's office in Washington

Dennis's primary office is at 800 17th St. N.W., Ste. 1100, Washington, DC, 20006. In-person meetings are by appointment; a phone intake usually comes first.

Main office

Holland And Knight Llp

800 17th St. N.W., Ste. 1100

Washington, DC 20006

Open in Google Maps

Client feedback

Client reviews of Dennis M Horn — 5.0/5 rating from 1 verified client review

Every review below is from a verified client of Dennis. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing business attorneys in Washington.

5.0

1 client review

Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Dennis M Horn claims this profile.

Read all reviews

Hiring guide

How to hire Dennis M Horn — what to expect in your first consultation

Working with a new business attorney should feel structured. Here's how the first two conversations with Dennis usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Dennis charges for the initial consult. That fee is credited toward representation if you retain Dennis'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; Dennis will tell you what matters and what doesn't.

Questions to ask a business attorney in Washington, District of Columbia

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 Dennis

Dennis 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. Dennis confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Dennis'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 Dennis M Horn

  • How much does it cost to hire Dennis for a business case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Dennis walks through the likely range during the consult so there are no surprises.

  • Does Dennis offer a free consultation?

    Dennis charges for the initial consult; that fee is credited toward representation if you retain Dennis's office. Some business attorneys offer free consults — check Dennis's current terms during booking.

  • How long do business cases in District of Columbia 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. Dennis gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Dennis take my case if I'm outside Washington?

    Dennis is licensed in District of Columbia. Matters governed by District of Columbia law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Dennis 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 Dennis?

    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. Dennis will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Dennis accepting new business clients right now?

    Dennis'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 Washington and Belize City in District of Columbia

Dennis handles business matters throughout District of Columbia. Each city below is a direct link into the search page for verified business attorneys in that community.

More counsel

If Dennis's intake is full or the fit isn't right, these business attorneys in Washington handle similar matters. Every profile below is verified and open to consultations.