Atty. David N. Sonnesyn

Atty. David N. Sonnesyn

David N. Sonnesyn is a lawyer practicing estate planning, estate administration, real estate and 3 other areas of law.

Longmont Longmont 61 yrs experience 61 year
Call (983) 983-6044 Book Appointment

Profile Summary

About David N. Sonnesyn at a glance

David N. Sonnesyn is an Attorney based in Longmont, Colorado, practicing at The Sonnesyn Law Firm. They have 61+ years of legal experience, licensed to practice since 1965. Their practice focuses on probate, estate planning, real estate, zoning, and energy. Admitted to practice in Colorado (1965). Educated at University of Colorado at Boulder (J.D., 1965) and University of Colorado at Boulder (B.A., 1961). Recognitions include AV Preeminent. Active member of Colorado Bar Association (Member, Board of Governors, 1973-1975) Christian Legal Society. Serands clients in Longmont, CO and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • David N. Sonnesyn is a lawyer practicing estate planning, estate administration, real estate and 3 other areas of law
  • David N. received a B.A. degree from University of Colorado at Boulder in 1961, and has been licensed for 61 years
  • David N. practices at The Sonnesyn Law Firm in Longmont, CO

Practice Areas Explained

David N. Sonnesyn's Areas of Practice

Each practice area below reflects the types of cases David N. Sonnesyn handles, with a brief overview of what that area of law covers.

Probate

David N. Sonnesyn is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in Colorado →

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

David N. Sonnesyn is one of 226,536 estate planning attorneys indexed nationally. Browse estate planning attorneys in Colorado →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

David N. Sonnesyn is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Colorado →

Land Use & Zoning

David N. Sonnesyn is one of 40,226 zoning attorneys indexed nationally. Browse zoning attorneys in Colorado →

Energy & Utilities Law

Energy attorneys for oil & gas, renewables, utility regulation, and energy sector transactions.

David N. Sonnesyn is one of 36,230 energy attorneys indexed nationally. Browse energy attorneys in Colorado →

Jurisdictional Context

Why local counsel matters in Colorado

Practicing law in Colorado. Legal matters in Colorado are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Longmont are typically filed in the local municipal court or the appropriate Colorado state district court, depending on subject matter and amount in controversy. An attorney licensed in Colorado brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Colorado courts without local counsel or pro hac vice admission.

Looking for additional Colorado attorneys? Browse all attorneys in Longmont or all attorneys in Colorado.

Frequently Asked

Common questions about David N. Sonnesyn

Where is David N. Sonnesyn's law office located?
David N. Sonnesyn's law practice is located in Longmont, Colorado. The firm is The Sonnesyn Law Firm. You can contact the office directly through this profile page.
What practice areas does David N. Sonnesyn handle?
David N. Sonnesyn focuses on probate, estate planning, real estate, zoning, energy. Each practice area listed reflects experience handling cases of that type in Colorado.
How long has David N. Sonnesyn practiced law?
David N. Sonnesyn has 61+ years of legal experience and has been licensed since 1965.
Where did David N. Sonnesyn go to law school?
David N. Sonnesyn earned their education at (J.D., 1965); (B.A., 1961).
How can I contact David N. Sonnesyn for a consultation?
You can contact David N. Sonnesyn directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has David N. Sonnesyn received?
David N. Sonnesyn's notable recognition includes: AV Preeminent.

Education

J.D.
University of Colorado at Boulder
- 1965
B.A.
University of Colorado at Boulder
- 1961

Awards

AV Preeminent

Bar Admissions

Colorado
Admitted: 1965

Reviews

5.0
1 Review
5 0
4 0
3 0
2 0
1 0
These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

No reviews yet.