Exclusive Office Space for Legal Professionals in the Heart of D.C.

Founded by an attorney for attorneys, OSI offers premium workspace solutions with the flexibility and prestige your practice deserves. Located one block from the White House on K Street.

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Premium Legal Office Space Designed for Your Success

OSI Offices provides Washington D.C.'s most established attorney office solutions, with a 40-year legacy of serving the legal community. Founded by C. Jack Pearce, a distinguished antitrust attorney with experience at the U.S. Department of Justice and White House Office of Consumer Affairs, we understand the unique needs of legal professionals.

Our premium K Street location offers the prestigious address your practice deserves while providing the flexibility modern attorneys need. With no long-term commitments, setup fees, or termination penalties, you can focus on what matters most—your clients and cases.

Prime K Street Location

Elevate your practice with a prestigious address one block from the White House, providing the professional image clients expect from top legal counsel.

Flexible Terms

Adapt your office space to your practice's changing needs with month-to-month options and no long-term lease requirements.

Privacy & Confidentiality

Conduct client meetings and sensitive legal work in secure, private offices designed with attorney-client privilege in mind.

Comprehensive Legal Office Solutions

Professional Reception Services Dedicated staff to greet clients and manage administrative tasks
Furnished Private Offices Elegant, ready-to-use workspaces with professional furnishings
Conference Facilities Well-appointed meeting rooms for depositions and client conferences
Secure Mail Handling Mail scanning and forwarding with confidentiality protocols
24/7 Building Access Round-the-clock secure entry for late case preparation
High-Speed Internet Enterprise-grade connectivity for research and communications
Registered Agent Services Professional representation for legal documents and notices
DC Bar Collaboration Access to exclusive lectures and professional development events
Legal Community Network Connect with fellow attorneys for referrals and collaboration
Administrative Support On-site assistance with document preparation and filing
Virtual Office Options Prestigious address and phone services without physical office
Curbside Delivery Service Convenient mail delivery directly to your vehicle

Visuals & Voices

On internationally famous K St.

A large conference room for presentations.

A typical K St. Window office.

A medium size conference room.

All conference rooms have full AV equipment for depositions etc..

""OSI has met the business needs of my law practice for almost 15 years. The office services are both comprehensive and reliable. The staff is well-trained and unfailingly courteous The handling of the mail and deliveries is dependable. My clients have commented favorably on the facilities and well-appointed offices.""

- Chris Leflore Esq.

""I have been back with OSI for slightly over 3 years. This is my second stint with OSI, having previously been with them from from 1985-1996. OSI offers the best possible set-up for a lawyer such as myself who is a sole practitioner. I have a litigation practice, so it is imperative that my mail and telephone logs be meticulous, and that my clients and witnesses be accommodated at all times. I could not be happier with OSI. The OSI staff is outstanding—courteous, efficient, and always willing to go the extra mile for a client. The OSI management is fabulous. Jack Pearce and his managers always know what technology is on the cutting edge for attorneys, and offer mini-seminars to ensure that the attorneys renting from OSI are kept abreast of all the latest Court-ordered innovations. As an example, when the D.C. courts went to mandatory electronic filing, OSI installed copiers and scanners that would accommodate the largest of jobs. Now, thanks to OSI technology, I can handle electronic discovery in huge proportions. I would highly recommend OSI to any small business that needs a big business presence.""

- John Davis

""For more than two decades, Jack Pearce and OSI Inc. have provided excellent professional service to my firm, Lasley And Associates. With the assistance and professional service of OSI, I have been able to maintain a vibrant criminal law and civil rights practice. I have advanced several major civil and human rights initiatives – especially the Height-Mandel (Tambo) leadership institute for civil and humanitarian rights, and Houstonian jurisprudence. Thanks Jack.""

- Michael Lasley Esq.

""I have used O.S.I Management Inc. services for several years from 2008 to 2010 and again since 2013 for my law office. I always have been very satisfied with the professionalism and responsiveness of the owner, Mr. Jack Pearce and his new manager, Ms. Mumbi Thande. O.S.I. has been flexible and accommodating to my business needs more than once. In 2013, when I re-established my practice, I would not have chosen to go any other place than to O.S.I. - I just called Mr. Pearce and an hour later, I was all set! Their prices are competitive, the team is always kind and available and I never experienced any glitch. A big thumb up for "Jack" and his team! ""

- Cécile Neuvens

"“I have performed European and African international law, have had an office presence in the K Street Corridor since 1976, and have used OSI for over 15 years because it has provided by far my best experience.""

- John Floyd III, Esq

""Saffold and Associates has been a long time (10+ years) and loyal customer of OSI. The virtual office model was great while we were building the business and clientele. Once we outgrew the virtual office model we decided to rent full time offices on the 1629 K Street 3rd floor suite. The offices are well-maintained and cleaned daily with a professional cleaning service. The ladies at the front desk make our client feel welcome and are excellent at receiving evidence and payments from clients. Finally, the location (Farragut Square) and amenities (high-speed printer/copier/internet) cannot be beat!" "

- David Saffold, President.

Our most popular plans for Attorneys

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Starter Package

^$99per month

K Street Farragut Square address.
Mail service.
DC phone number. With voicemail to email transcribed messaging.
Two hours prepaid office use.
Mail surfaces are scanned and emailed upon receipt, with the additional service of content scanning available upon request.

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Comprehensive Plan

^$165per month

Sixteen hours prepaid office use.
K Street Farragut Square address.
Mail service.
DC phone number. With voicemail to email transcribed messaging.
Mail surfaces are scanned and emailed upon receipt, with the additional service of content scanning available upon request.
Lobby Listing
We offer the service of acting as your registered agent.
We provide a convenient curbside delivery service for your mail directly to your vehicle.

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