Halligan LLC

Gavin Halligan

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Gavin is a Colorado native and has been practicing family law litigation and appeals since 2013. Gavin has tried cases throughout Colorado counties including Adams, Arapahoe, Boulder, Broomfield, El Paso, Denver, Douglas, Jefferson, Larimer and Weld.

Gavin is an advocate, strategically using her knowledge of the law to achieve clients’ goals. Gavin has handled numerous high asset and high conflict complex litigation matters, along with appeals.

Apart from practicing law, Gavin is fluent in Spanish and has been a Victim’s Advocate for the Federal Heights Police Department since 2012. Gavin also enjoys traveling with her family, participating in state and local politics and playing with her Maltipoo dog, Puppin.

Bar Admittance and Memberships:

Colorado, 2012

Colorado Bar Association

Family Law Section

Denver Bar Association

Denver Metro Interdisciplinary Committee Member


University of Denver Sturm College of Law, J.D., 2012

The Catholic University of America, B.A., 2009

10.0Gavin Marie Halligan
Gavin Marie HalliganReviewsout of 8 reviews

Allison Boschert

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Allison is a native of Colorado and has been practicing exclusively in the area of family law since 2014. Prior to entering law school, Allison worked as an American Montessori Society-certified teacher and as a fully-licensed insurance agent and she continues to draw upon the skills acquired in her previous possessions to augment her ability to represent her clients. She has successfully litigated cases throughout Colorado, including the counties of Denver, Arapahoe, Adams, Larimer, Boulder, Jefferson, and El Paso.

Allison prides herself on listening to each client's individual needs and preferences and incorporating them into the unique strategy that she implements in every case. While always willing to take every case to trial, Allison also believes in the value of out of court settlement. Regardless of the approach used in each case, the goal remains the same: to help her clients through a difficult part of their lives by helping them achieve a better position in whatever challenges they face.

Outside of work, Allison is an ardent bookworm and always has numerous research projects going in various subjects including, but not limited to, philosophy, history, law, and economics. Allison also enjoys cooking, painting, gardening, and maintaining her moderate obsession with professional baseball. Allison lives in Denver with her husband, Tyler, who is an intellectual property attorney

Bar Admittance and Membership:

Colorado, 2014

Colorado Bar Association

Family Law Section

Young Lawyers Division

Denver Bar Associaton

Denver Metro Interdisciplinary Committee Member


University of Colorado at Boulder, B.A., 2003, summa cum laude with distinction

Montessori Education Center of the Rockies, 2006, American Montessori Society Certificate in Primary Level Education

University of Colorado Law School, 2014

7.1Allison Boschert
Allison BoschertReviewsout of 2 reviews

Client Reviews

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Gavin Halligan will represent YOUR interests
Divorce and custody battles are exhausting and unfamiliar territory for first time divorcees! After having fired 2 other attorneys who I felt were not representing my interests, I found Gavin Halligan. Gavin has been a game changer for me. Gavin Halligan listens, offers sound advice, always returns my calls/emails, and most importantly, represents ME. Gavin has fought hard for my custody rights and has helped me gain the custody I so desperately desired. As a father, you already start in the negative for child custody during a divorce. You must have a strong attorney who knows the law and the system to gain the custody you desire for the relationship you deserve as a parent. Gavin Halligan will help you through this troubling time and make sure your rights are not lost in unnecessary compromises. Gavin’s expertise, professionalism, and strong representation of my interests gave me hope that I would achieve my parenting rights as a father. She continues to help me gain valuable time with my child and I can’t thank her enough for that! I highly recommend Gavin Halligan if you are looking for representation during a divorce or child custody battle.
Avvo Rating 5/5
Gavin Halligan
Ms. Halligan and her team did an outstanding job representing me during my divorce. I give them my highest possible recommendation. My divorce had some complicating factors including children, a variety of assets types, and partial ownership of a business which needed to be addressed. Gavin and her team were always knowledgeable and prepared for every step in the process. They were also personable and empathetic which made me feel like they really understood my concerns and priorities while professionally steering me to make decisions that were in my long term best interest.
Avvo Rating 5/5
Gavin Marie Halligan is excellent in every possible way
Gavin saved me! I was in a very scary place with a little girl and she assisted me in a Permanent Protection Order Hearing. I was terrified of the trial, but with Gavin by my side it was smooth and fearless. She is someone I would trust with my life. The order was issued, and if I ever needed a lawyer again, she would be my gal! Gavin is compassionate and smart. She had everything prepared within very short amount of time. She is organized beyond belief and actually cares about her clients. If you live near Boulder or the surrounding areas, I could not refer you to a better person. He collogue Todd Burnham was just as fantastic! This is a group of people I will forever be thankful for finding and most importantly keeping us safe.
Avvo Rating 5/5
Very happy client
Simply put, Gavin made my ex-wife's lawyer look like a guy who got his degree from a mail order catalog! Though he supposedly had been in practice for 30 years, Gavin mopped the floor with him! She countered every demand that my ex and her lawyer made with law that backed my position and she gave me awesome advice on how to respond to their attempts at extortion. In the end, my ex ended up with less than she had before she got greedy.
Avvo Rating 5/5


(720) 489-3907
Mon-Fri, 8 - 6

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2880 Bryant St
Denver, CO 80211


The office can only be accessed from Speer Boulevard and is on Bryant Street on the right.


Parking spaces are usually available on Bryant street. If you cannot find a spot on Bryant, parking is available in the Aspen Gold parking lot directly across the street on Bryant. The signs indicate you will be ticketed, but you have permission to park there.