Costello Law Firm

Established in 1998, our attorneys focus their practices in four key areas: complex litigation, white collar defense, professional license defense, and business and employment litigation and compliance.

Our business is in a highly regulated industry, and Kris proved to be capable and knowledgeable about the depth of legal requirements that we were facing. Costello Law Firm provided high quality legal services and represented our interests well. Her firm prepared our company for a successful DOL audit regarding trust accounting. We would highly recommend her to future clients.

Business Owner

Compliance and Employment

Costello Law Firm is a team of experienced courtroom attorneys. We provide complex litigation, dispute resolution, and regulatory compliance services to corporations, business owners, and professionals in highly regulated industries. We represent clients in court, during government investigations and enforcement actions, and in business and employment matters. We use the skills honed in the courtroom to settle matters effectively and to assist clients with successful risk management strategies.


We have litigated hundreds of cases before juries, judges, and in arbitrations. Our clients benefit from this experience successfully handling high stakes, high pressure and complex litigation. Simply put, lawyers who can try and win cases can settle cases more effectively and efficiently.

We collaborate with our clients on solutions to their legal problems. Together, we identify the desired outcome and build a strategic and cost-effective plan to achieve it. We communicate regularly with our clients and help them reach informed decisions on their options.


Costello Law Firm has built streamlined yet robust systems for trial and case management. Our systems support our mission to provide our clients with high quality and well managed legal services. We efficiently and transparently deliver effective results. We can prepare litigation quickly and stabilize even the most complicated high stakes crises. Our approach allows our clients to remain focused on their business needs while we manage and resolve their legal matters.


Our firm understands what’s at stake in business. We know that legal problems can distract owners, drain a company’s resources, and even risk an entire business, career, and reputation. We are experienced in high stakes and high pressure litigation, investigations, and enforcement proceedings. We can help clients respond effectively to an unexpected crisis and quickly develop a plan to help preserve and protect their position.

We started our general counsel practice because we have observed that many legal crises could have been avoided with earlier action. We encourage clients to invest in due diligence reviews of their business and employment practices, and to invest in compliance systems and strategies to protect their enterprises.
(206) 749-5020
200 First Ave West, Suite 306
Seattle, WA 98119