Private offices, dedicated desks, virtual offices and meeting rooms in one staffed K Street suite, month-to-month with no security deposit. OSI Offices has been family-owned at 1629 K Street NW since 1981, a 5-minute walk (0.4 miles) from the White House and two blocks from Farragut Square.
Tell us what kind of space you need. A real person on K Street replies the same business day with what is open and what it costs.
Most searches for office space in Washington DC end in the same place: a broker, a multi-year lease, a security deposit and a build-out. OSI Offices is the other path. We run a staffed office suite on the 3rd and 4th floors of 1629 K Street NW and rent it out by the room, by the desk, by the hour and by the mailbox, so you pay for exactly the amount of downtown office you use.
Everything below runs on a month-to-month agreement with no security deposit and no setup fee. Whichever plan you start on, you can move up (from a few office hours to a dedicated desk to your own private office) or down as your practice or company changes, without a new lease.
Your own lockable, furnished office (desk, executive and guest chairs) with 24/7 key-card access, a lobby directory listing, mail service and 15 hours of conference-room use each month. Sized for a solo professional up to a small team of four or five. The exact price depends on the room, so we quote after a tour.
Private offices on K StreetA desk that is yours, inside the same staffed suite, with a K Street business address. The $279 plan covers business-hours access with mail service; $340 adds 24/7 access and 5 hours of meeting space; $500 adds live phone answering, digital mail and more meeting hours. No membership needed for hourly drop-in workspace at $20/hr.
Coworking and dedicated desksWork from home but keep a real downtown DC presence. The $35 plan is three hours of office use a month (hours only, no address). The Business Address plan is $65/mo (half price for your first six months) and gives you 1629 K Street NW for your letterhead, filings and Google listing, with mail sorted, scanned to your portal or forwarded. Add a DC phone number with live answering on the Starter ($99) or Comprehensive ($165) plans.
Virtual office plans in DCBook by the hour with no membership: a private office for a client meeting or phone call, a small meeting room for two to four, a large conference room for six to twelve, or the executive boardroom for up to thirty. Display, Wi-Fi and reception included; members pay a reduced rate.
Conference room rental in DCEvery plan OSI sells, on one page. All prices are monthly, month-to-month, with no security deposit. Additional office hours on any hourly plan are $14/hr. The full pricing page lists add-ons such as a registered agent ($5/mo plus a one-time $25 setup).
| Plan | Price | What you get | Best for | |
|---|---|---|---|---|
| 3 hrs Office Hours | $35/mo | 3 hours of private office use a month, meeting-room access, online booking. Hours only, no address. | Occasional in-person meetings | Sign up |
| Office Hours | $55/mo | 5 prepaid office hours a month, meeting-room access, $14/hr after that. | Weekly client sessions | Sign up |
| Business Address 50% off 6 mo | $32.50/mofirst 6 months, then $65/mo | 1629 K Street NW as your business address, daily mail sorting, forwarding, occupancy permit, office use at $18/hr. | Remote firms that need a DC address | Sign up |
| Starter Package 50% off 6 mo | $49.50/mofirst 6 months, then $99/mo | Business address with mail handling, a DC phone number with voicemail to email, 2 office hours a month, meeting-room access. | Solo attorneys and consultants | Sign up |
| Comprehensive Service | $165/mo | Live phone answering by our receptionists, mail collection and sorting, 16 prepaid conference hours, lobby listing. | A full front office without the office | Sign up |
| Dedicated Desk | $279/mo$340 with 24/7 access, $500 premium | Your own desk in the suite, K Street address, internet and printing, member-rate meeting rooms. SAM and CBE eligible. | Daily workers who do not need a door | Sign up |
| Private Office | $700–$2,200/moquoted by room after a tour | Furnished, lockable office with 24/7 key-card access, lobby listing, mail service and 15 hours of conference-room use. | Solo practitioners and teams of 2–5 | See offices |
| Meeting Rooms | From $18/hr$22 / $26 / $98 by room size | Hourly offices, meeting rooms and a 30-seat boardroom with display, Wi-Fi and reception. No membership required. | Depositions, interviews, board meetings | See rooms |
| Drop-in Workspace | $20/hr | Use the workspace by the hour with no plan at all. Call or email to reserve. | Visitors and one-off workdays | Details |
Signing up online takes a few minutes. The $1 charged at signup is credited against your first invoice, which is prorated from your start date. Compare every plan side by side.
The things a traditional DC lease makes you buy, hire or wire yourself are already running when you arrive.
A receptionist at the front desk greets your clients, signs for deliveries and answers your line on the phone plans, Monday to Friday 8 am to 9 pm and Saturday 9 am to 6 pm.
Mail is sorted daily and, on scanning plans, scanned to your client portal so you can read it from anywhere. Forwarding and package acceptance are handled by the same team.
High-speed fiber, wired and wireless, plus a business center with printing, copying and scanning. No ISP contract and no installation wait.
Reserve rooms, read your scanned mail, check voicemail and view invoices 24/7 from our own client portal, built and run in-house.
1629 K Street NW works for DC business registration, professional licensing, letterhead and your website. OSI holds its own Certificate of Occupancy for the suite and provides a copy for your Basic Business License at no charge.
Shared kitchen and lounge areas, cleaning and utilities are part of every plan. There are no hidden fees added to the monthly rate.
Where the office is matters as much as what it costs. OSI has been family-owned on K Street since 1981.
1629 K Street NW sits in the Central Business District between 16th and 17th Streets, two blocks from Farragut Square. K Street is the address Washington associates with law firms, government-affairs shops, associations and consultancies, and it reads that way on a business card, a Bar listing or a federal registration.
The White House is a 5-minute walk (0.4 miles). Farragut North (Red Line) and Farragut West (Blue, Orange and Silver Lines) are both within a three-minute walk, with McPherson Square a block away, so clients arriving from Maryland, Virginia or Union Station rarely need a car. Restaurants, banks, hotels and the park at Farragut Square are all within a block.
Plans that include an address also include a building lobby directory listing, and our location page has directions, parking and transit detail. Looking for a particular neighborhood? We also serve clients who want a Dupont Circle, Georgetown, Capitol Hill or Foggy Bottom presence from the same K Street suite.
More than 1,500 businesses work from or through 1629 K Street NW. Six groups make up most of them, and each has its own page.
120+ mental-health professionals see clients here, in quiet offices with a waiting area and a reception team that knows your clients by name. Hourly plans suit a part-time caseload; private offices suit a full panel.
OSI was founded by an antitrust attorney, and 400+ lawyers use the suite for a Bar-ready K Street address, deposition rooms and attorney-specific mail handling. Free mail surface scanning for attorneys.
A verifiable DC place of business for SAM registration and CBE certification, with a lease in your company name and a copy of our Certificate of Occupancy when a filing asks for one.
A Washington headquarters address for donors, members and the IRS, with an Essentials package that includes registered agent service and meeting rooms for board sessions.
Start with a desk, add a phone line, move into a private office when the second hire arrives. Nothing to renegotiate and no lease to break along the way.
Companies headquartered elsewhere that need a staffed DC office a few days a month for agency meetings, client visits and business development.
What people ask before they book a tour of 1629 K Street NW.
Walk the 3rd and 4th floors, meet the reception team and find out what is open right now. You can sign up online the same day or take a quote home. Call (202) 600-7777 with any question.
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