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Sean E Armstrong

Divorce and separation Attorney

5.0   41 reviews
This attorney is currently not accepting new clients.
Reason: Not Practicing
This attorney is currently not accepting new clients.
Reason: Not Practicing
  • Licensed for 22 years
    State OR
    Acquired 2001
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Sean

Learn Sean’s areas of practice.

Practice areas
  1. Divorce and separation
    Sean's divorce and family law practice focuses on child custody, parenting time, spousal and child support, property division, adoption, and guardianship proceedings. He recognizes the delicate family dynamics at work during a divorce and understands that personal attention to his clients' unique circumstances requires a thoughtful and creative approach to problem-solving.

    21 years

  2. Mediation
    Sean's mediation practice is for those who need assistance ending their marriage or business relationship but do not wish to incur the time, expense, or emotional toll of contested litigation.

    13 years

  3. Litigation
    Sean's litigation practice focuses on resolving business disputes between partners, business, and homeowner's associations with a focus on pursuing cost-effective and lasting results.

    23 years


No contact information available for this lawyer


5.0 / 5.0
  41 customer reviews
5 Star
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1 Star
Posted by Brice Stanley | October 5, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Was an excellent attorney and so is his group
I wrote an earlier review, in 2015, shortly after retaining Mr Armstrong. He represented me in a move away/custody case and was incredibly skilled both in and ouside of the courtroom. Unfortunately, this custody issue has spanned 8 years and is widely regarded as an increibly contentius divorce. Sean was by far the best attorney I've ever had. He never looked to escalate fear, resentment between attorneys or clients and always approaced things reasonable. He also focused decisions and our conversations on the best interest of our child. I respected that. That said, one of his former firm partners, Tammy D. assumed my case, once Sean was appointed to the Bench. She, too, is fantastic. This group is really quite good at what they do. I highly recommend them. Bts
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Posted by Peter | January 7, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Very impressed client
I had Sean as my attorney for a very messy divorce. He is a top notch attorney, and of the few elite attorneys in town one of the very best. He is competent, and his ability negotiate with difficult opposing counsel and ex-spouses and judges is excellent. I would not hesitate to recommend him to anyone. If he were to take your case, you are in good hands because his understanding of the law and his practical advice on resolving conflict is money well spent.
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Posted by Jerry | December 24, 2015
This review is from a person who hired this attorney.
| Hired Attorney
I would recommend Sean Armstrong
I had some very specific goals to accomplish in my divorce case. Sean listened to what those goals were, and represented me with my goals in mind, not his. We were able to work the case through to my satisfaction. He kept everything on task and professional, while taking the time to explain to me in detail everything I had questions on. I would highly recommend Sean.
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Posted by anonymous | October 30, 2015
This review is from a person who hired this attorney.
| Hired Attorney
Trusted adviser
Divorcing is a terrible experience and I don’t believe anyone wants to go through it when they get married. However, after 10 years of marriage I was faced with this difficult choice and I had to do what was best for myself and my children. Sean Armstrong helped me by breaking down many highly charged emotional situations to a logical solution before I had to address them with a person that can be illogical and difficult. He was able to assist me in how best to handle all aspects of the process in order to support my children in the most peaceful way throughout the experience. I utilized his services again to address a parenting matter with my ex-partner recently and once again Sean Armstrong treated me with the utmost respect. He listened to me and seemed to care about what I had to say. He was able to analyze all of my input and help me to negotiate a new plan to best support my children. I trust Sean Armstrong, he gives lawyers a good reputation and if I ever need an attorney again he is my first call.
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Posted by anonymous | July 9, 2015
Attorney you can trust....
Sean handled my case a few years ago and did an excellent job. He and his staff kept me informed of every move and they were always there to answer my questions, even after hours to reassure me that everything was going fine. Its been a few years now, and he still keeps in touch to make sure we are doing well. I would highly recommend him to anyone needing an attorney they can trust with their family.
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Posted by Lisa | June 5, 2015
Sean defies all the negative lawyer stereotypes
I've worked with Sean a couple of times, and he was recommended to me by our long-time financial advisor who spoke very highly of him. Although my divorce occurred nearly 12 years ago, I went to Sean twice for help -- once for revising the previous parenting time with my ex-husband and once for helping me plan ahead for child support once my daughter turns 18 and goes to college. Both experiences with Sean were exemplary. He's extremely responsive to questions, his staff is professional and courteous, and he doesn't talk "lawyer speak." Sean is conversational, to the point and easy to understand. He truly wants to help his clients, especially when children are involved. He is not theatrical, bombastic and antagonistic as some attorneys are -- which only escalates an already emotional situation. Instead, Sean is calm, attentive and reassuring. Although my relationship with my ex-husband is good, I feel 100 percent certain Sean would be a great asset in a contentious divorce situation. He would help keep tensions calm and work to get things resolved effectively and as quickly as possible. I feel very fortunate to have found him.
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Posted by David | April 16, 2015
Encouragement through hardship: Pick the right lawyer... Pick the right team.
Divorce is a painful and discouraging experience— I would not wish it on my worst enemy. Having a lawyer and a staff of friendly and informed assistants is the greatest asset anyone could ask for. From the first day that I meet Sean He was able to encourage me and give me the help and direction I needed. I was well informed throughout the procedure and his counsel was always sound and in my best interests as a client. I am so grateful to the team in Sean's office. I would recommend their services to anyone going through this procedure. Having a group of professionals that are knowledgeable, loyal and faithful to stand by you in your time of need cannot be valued in dollars. If you are looking for people who knows the law, and are dedicated to their clients— Sean's office should be your first call.
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Posted by BTS | February 24, 2015
A review of first impressions
I'm a new and current client of Mr. Armstrong. I'll keep this brief but to the point- I also want to write a review prior to any outcome. My reason for retaining Sean was to contest my former spouse's plans to move out of state with our daughter. We're very close and I feel it would be devastating for us both. That said, I had consulted six other attorneys (all well-respected) prior to seeing Sean. What I can tell you is that he is professional, to the point, communicates regularly and his assistant is on the ball. Thus far, my experience with their office has been top notch.
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Posted by Loir | February 5, 2015
Professional and Personable
Sean is a very professional and personable attorney and now, friend. My husband was diagnosed with a very aggressive form of early onset dementia, As his disease progressed, he became more and more aggressive with our two teenage sons. It became necessary to ask my husband to leave our home for the safety of our children. He refused to leave and I received no support from his family. Finally the day came when the police became involved and I moved my children out of the home. Everything fell apart from there. Long story short he finally left and moved out of state to live with his mother. After the move, there was no more communication. Months went by and we heard nothing from my husband and his family refused to speak to us. Hence, I filed for divorce. There was nothing more I could do.... This was an unprecedented divorce case. How do you divorce your demented husband? You don't. You divorce his family members who now have power of attorney and think you are the worst person on earth for abandoning your demented husband... Sean took this case by the horns and followed through on every unpioneered move .An out of state divorce requires extra measures, But divorcing someone who doesn't even know who you are anymore takes a lot more. Sean knew them all. In the end, I got to keep my retirement and most of my assets. My children are mine to raise and I also got to keep our home to raise them in. I can't thank Sean enough for all that he has done to keep my family together and thriving.
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Posted by Tina | January 5, 2015
Thank you for your help!
Sean helped us negotiate and re-file an updated parenting plan for our teenage daughter who's father is out of state. He was well organized, he communicated clearly with us and was effective in negotiation. Sean definitely had our daughters best interest in mind and listened to our needs and wants. Would refer him to anyone and retain him again!
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Posted by anonymous | December 18, 2014
I HIGHLY recommend Sean E Armstong
Sean was recommended to me by an attorney friend of mine from my current town. I traveled over two hours each way for my meetings with Sean and it was time and money well spent. Although my divorce was for the most part amicable and my ex and I had hired a mediator, I thought it wise to consult with Sean outside of mediation. Above and beyond Sean's exemplary knowledge of divorce law, what impressed me even more was his knowledge and skills in dealing with difficult people and imparting that knowledge to his client. He quickly read my situation and coached me on how best to prepare and dare I say, behave at each mediation session. I know that Sean's advice led me to achieve what many would consider a more than fair settlement. Sean and his staff are highly professional and always made me feel like I was their most important case at all times. They responded promptly to every email and call and guided me through what could have been a confusing and difficult process. I can't say enough about Mr Armstrong. His knowledge of the law, intelligence, integrity and interpersonal skills make him the obvious choice. I have and will continue to recommend Sean as someone who will achieve the best possible outcome for his client.
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Posted by Seaira | December 17, 2014
Sean E Armstrong, is a life saver!
Sean is the type of man you would not only want to handle your legal matters, but also want to have at a family dinner simply for delightful company. He was patient with me and my family, honest every step of the way, and extremely supportive. I found myself looking at him and asking "what would you do?" and feeling confident with whatever steps he decided to take. This guy really knows his stuff, and can not only maintain a professional appearance and attitude, but can also lighten the mood a bit when things get rough. Because of Sean, my life is headed in the right direction and I have a million opportunities in front of me. I couldn't have done it without him. He will be the first person I call for my legal matters in the future.
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Posted by Kati and Ryan | November 25, 2014
Logical not emotional
We have worked with Sean several time through child parenting plan modifications. Sean and his team are responsive, professional and always a pleasure to work with. Sean is logical and helps you see through the emotion that at times can cloud judgment, without making you feel like its not ok to be emotional through the times or challenge. Sean was always trustworthy and we felt he had our best interest and the children's best interest as a priority at all times. Would def recommend working with Sean.
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Posted by Will | November 22, 2014
Sean E. Armstrong
It was a great pleasure working with Sean and his assistants. A divorce is complicated a best. Sean made the process less complicated by always responding in a timely manner with well thought out ideas. I was always confident that there was a plan in place and that the whole process was moving forward. I thank Sean for that. I am very pleased with the results that we achieved and I have recommended Sean to others and will continue to do so in the future.
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Posted by Katie | November 20, 2014
Highly recommended
Sean Armstrong did a great job on my child custody case 8 years ago. He was confident and reassuring. Sean took the time to get to know the overall situation so that he was able to anticipate what would be thrown at us in court and he was prepared to discredit false accusations. Since then he has also helped with modifications related to the case and has always handled them in the same calm, reasonable and confident manner. I would highly recommend Sean and have referred many friends to him.
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Posted by Todd | November 20, 2014
Excellent results
Great communication, very informative on the things I needed to know, listened to the things that were important to me. Always communicated back promptly when I had questions, and handled my case quickly and neatly with no delays
Posted by Derek | November 19, 2014
Massive help.
Sean helped me in a very difficult time, when my time with my daughter was at risk and it felt like it was gonna be impossible to get what I wanted. Now I have plenty of time with my daughter that I know I wouldn't of had with the help of Sean and his team.
Posted by Nestor | November 19, 2014
A positive experience.
I hade a very positive experience with Sean Armstrong. He was very professional and explain thing very well. I will recommend Him to anybody that wants a good representation.
Posted by anonymous | November 19, 2014
Sean Armstrong - excellent Divorce/Child Custody Lawyer
My experience with Sean has been a great on-going one. I first hired him for my divorce and child custody case. He was very informative, his staff kept me in the loop and I always knew the timeline for proceedings involved. When the case closed, I had pretty much all that I felt I was entitled to and the parenting plan I wanted. I then hired him again for a modification of the parenting plan. I would recommend him to anyone going through a similar case. He has given me reassurance and logic. Something that everyone needs when children are involved.
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Posted by Eric | November 4, 2014
Fantastic Attorney!
Sean Armstrong represented me in a challenging divorce case. Sean was professional and knowledgeable and proved masterful at guiding me through the difficult process. Sean took the time to establish a relationship with me beyond just attorney/client, which helped him serve me by better understand my situation and needs. He was responsive to me whether during or after regular business hours. Sean's demeanor in court was calm, professional, and courteous. He took the time to prep me for the trial, which helped to put me at ease. He was prepared for trial with all necessary documents presented in a thorough, professional manner. Sean also provided me with excellent advice regarding how to conduct myself through the divorce process in order to obtain the best possible outcomes. While my experience with Sean was for a divorce case, I would highly recommend him for any of your legal needs. I will definitely hire Sean again if the need arises.
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AVVO RATING 8.1 (Excellent)

Sample of Legal Cases

  • Custody Modification
  • Custody to Father after a three day trial

Languages Spoken

  • English

Attorney endorsements

Received (9)
Given (6)
Endorse Sean
Divorce and separation Attorney | May 30
Relationship: Opposing Counsel on matter
"I have had the pleasure of working with Sean on a number of cases. He is one of few attorneys who puts jockeying aside and identifies the real issues at hand. This no-nonsense approach to cases saves both of our clients' time and money, as well as the stress associated with a long-drawn out legal proceeding. I highly recommend him."
Divorce and separation Attorney | Jan 23
Relationship: Fellow lawyer in community
"Sean is an outstanding attorney and an outstanding individual. He has a no-nonsense and honest approach to resolving cases. His hard work and willingness to reach out to others in the legal community have helped establish him as a highly respected attorney."
Unknown Attorney | Jan 28
Relationship: Opposing Counsel on matter
"Mr. Armstrong and I worked on complicated and lengthy elder abuse case. He is a zealous advocate and has a superb reputation in the legal community. He is efficient and practical. I endorse him without reservation."
Family Attorney | Sep 06
Relationship: Fellow lawyer in community
"Sean works hard for his client while always being reasonable, something that is too often lacking in the approach of other attorneys. He is knowledgeable, absolutely competent in lawyerly skills but his most effective trait in negotiations is his always pleasant personality. He uses this attribute to the client's advantage in every case. He is an excellent attorney."
Family Attorney | Jun 06
Relationship: Fellow lawyer in community
"I endorse Sean. He is a highly skilled attorney that is well respected in the legal community."
Family Attorney | Nov 06
Relationship: Fellow lawyer in community
"Sean Armstrong provides exceptional advocacy through professional and efficient legal counsel. He is knowledgeable of the law, and works hard to obtain results that serve his client’s best interests. Sean is well respected by both attorneys and former clients throughout the local community. I endorse this attorney."
Family Attorney | Oct 25
Relationship: Fellow lawyer in community
"Sean is an excellent attorney. I refer clients to Sean due to his personal touch and individual treatment towards people facing such emotional and often stressful situations. I am happy to endorse Sean."
Family Attorney | Oct 02
Relationship: Fellow lawyer in community
"Sean is an attorney with integrity and experience that would be an asset to any client. I have contacted Sean for assistance on several matters where his experience and strategy helped my clients. I certainly recommend him to others."
Family Attorney | Feb 24
Relationship: Fellow lawyer in community
"I have known Sean for about two years. He is an outstanding attorney. Sean is knowledgeable, intelligent and works passionately to obtain the best possible result for his clients. Professionally, his collegiality is top notch. Sean is gracious in sharing his time and advice with fellow attorneys. I can not recommend Sean highly enough."
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Divorce and separation
Divorce and separation
Divorce and separation

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Sean E Armstrong
Divorce and separation Attorney
Licensed for 22 years