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Your Compassionate Family Law Partner in Denver, CO
At Tanis McGonegal Family Law, we bring over 37 years of experience to delivering compassionate and rigorous legal solutions tailored to each client's unique needs. Our approach prioritizes direct communication with attorneys, ensuring personalized case management and immediate access to legal expertise. Collaboration among our partners guarantees second opinions and strategic guidance, reflecting our commitment to clients' emotional, social, and financial well-being beyond legal outcomes. We focus on crafting solutions that align with clients' visions for resolution, emphasizing stability and future planning.

Our reputation for excellence is built on consistent success in complex family law matters, including divorce, custody, and mediation. We combine deep legal knowledge with empathy, ensuring clients feel supported through challenging transitions. Transparency in communication and billing fosters trust, while our dedication to continuous learning ensures up-to-date advocacy. Serving Northern Colorado, we are known for responsiveness, ethical practices, and a client-centric philosophy that extends beyond courtroom victories to long-term family harmony.
Services
Divorce Alimony Child Custody Mediation Child Support
Highlights and features
  • 37+ years of combined experience in family law
  • Direct attorney communication without intermediary staff
  • Personalized strategies tailored to client needs
  • Collaborative partner support for complex cases
  • Proven success in high-asset divorces and custody disputes
What people say
Exceptional legal expertise Highly responsive communication Compassionate representation Successful case outcomes Personalized attention to needs
Services
Divorce
We handle complex divorce cases with compassion and legal rigor, focusing on equitable asset division, spousal support, and custody arrangements. Our attorneys provide tailored guidance for high-asset divorces, ensuring protection of financial interests while prioritizing client emotional well-being. With decades of courtroom experience, we advocate aggressively for favorable outcomes while exploring settlement options to reduce conflict.
Alimony
Our alimony attorneys navigate Colorado's evolving maintenance laws to secure fair support arrangements. We analyze income complexities, negotiate settlements, and litigate when necessary, balancing immediate needs with long-term financial stability. Our approach considers tax implications and creative solutions like property trade-offs to meet client objectives efficiently.
Child Custody
We advocate for custody arrangements prioritizing children's well-being while protecting parental rights. Our services include modifying existing agreements, addressing relocations, and resolving disputes through mediation or litigation. Attorneys work closely with clients to develop practical parenting plans that adapt to evolving family dynamics and ensure children's stability.
Mediation
Our mediation services facilitate cooperative dispute resolution outside court for divorce, custody, and support issues. Certified mediators help couples reach sustainable agreements through structured negotiations, reducing emotional stress and legal costs. We emphasize collaborative problem-solving while maintaining strict impartiality throughout the process.
Child Support
We establish or modify child support arrangements considering Colorado's guidelines and unique family circumstances. Our attorneys accurately assess income complexities, healthcare costs, and custody schedules to ensure equitable support plans. We also assist with enforcement actions and modifications due to changing financial situations.
People
Leonard D. Tanis
Partner
With over 30 years in family law, Lenny Tanis specializes in child custody and mediation. Recognized for compassionate advocacy, he combines courtroom expertise with collaborative strategies to resolve complex cases while prioritizing clients' emotional well-being and children's best interests.
Michael McGonegal
Partner
Michael McGonegal offers extensive experience in divorce litigation and property division. His background in counseling informs a holistic approach balancing legal outcomes with clients' emotional needs. Clients praise his responsiveness, courtroom skill, and commitment to achieving practical solutions for high-conflict cases.
Questions
Does your firm offer free initial consultations?
Yes, we provide complimentary 20-minute consultations to discuss your case and explain our legal approach tailored to your specific needs.
Which counties do you serve?
We represent clients across Adams, Arapahoe, Boulder, Broomfield, Jefferson, Larimer, and Weld counties in Northern Colorado.
How does your mediation process work?
Our certified mediators facilitate structured negotiations to resolve disputes amicably, covering divorce terms, custody arrangements, and financial matters without courtroom confrontation.
What differentiates your child custody practice?
We combine legal expertise with child-centered advocacy, developing practical parenting plans while protecting parental rights through mediation or litigation as needed.
How are alimony determinations handled?
We navigate Colorado's spousal maintenance laws using income analysis and negotiation strategies to secure fair support arrangements tailored to your financial circumstances.
Can you handle high-asset divorce cases?
Yes, our attorneys specialize in complex financial divorces, protecting client interests in property division, business valuations, and asset distribution.