Architects Lists

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O'Brien - 3179 Wilson Boulevard, Arlington, VA 22201 703-522-8803     
O'Brien & Gere - 4201 Mitchellville Road, Suite 500, Bowie, MD 21706 301-731-5622     
O'Brien & Keane - 3719 Wilson Boulevard, Suite 200, Arlington, VA 22201 703-522-8803     
O'Brien & Gere Engineers, Inc - 18 Link Drive, Binghamton, NY 13904 (607) 232-5300     
O'Brien and Gere Engineers, Inc. - 2809 South Lynnhaven Road, Virginia Beach, VA 23452 757-431-2966     
O'Brien and Gere Engineers, Inc. - 8401 Corporate Drive, Suite 400, Landover, MD 20785 301-731-5622     
O'neil & Manion Architects, PA - 6931 Arlington Road, Suite 306, Bethesda, MD 20814 301-654-7004     
O'Neil Langan Architects - 118 West 22nd Street, 6th Floor, New York, NY 10011 347-834-7994     
O'Toole Design Associates, Inc. - 425 North New Ballas Road, Suite 201, Creve Coeur, MO 63141 314-909-1905     
Oak Point Associates - 231 Main Street, Biddeford, ME 04005 202-283-0193     
Oakline Studio, LLP - 421 Penman Street, Suite 200, Charlotte, NC 28203 704-373-1900     
O’Brien & Keane - 1010 North Glebe Road, Arlington, VA 22201 703-522-8803     
Obenchain, Linkous, Daniels & Sowick - 4932 Frontage Road, NW, Roanoke, VA 24019 540-265-4444     
Obenchain, Linkous, Daniels & Sowick - 11508 Allecingie Parkway, Richmond, VA 23235 804-423-6444     
Obrien Architecture - 143 North Main Stgreet, Kernersville, NC 27284 336-423-4411     
OCIO Design Group, Inc. - 1717 5TH Avenue, San Diego, CA 92101 619-232-0261     
OConnell Robertson & Associates Inc. - 811 Barton Springs Road Suite 900, Austin, TX 78704 512-478-7286     
Oculus - 2400 17th Street, NW, Suite 201, Washington, DC 20009 202-588-5454     
Oculus, Inc. - One South memorial Drive, Suite 1500, St. Louis, MO 63102 314-367-6100     
ODA Architecture - 2010 South Tryon Street, Suite 1A, Charlotte, NC 28203 704-322-1615     
ODA New York - 250 Park Avenue South Third Floor, New York, NY 10003 (646) 478-7455     
Odell - 2700 Virginia Street, Richmond, VA 23219 804-287-8200     
Odell - 212 South Tryon Street, Suite 980, Charlotte, NC 28281 704-414-1000     
Odell Associates - 111 Virginia Street Suite 401, Richmond, VA 23219 804-287-8200     
Odell Associates, Inc. - 6802 Paragon Place, Suite 500, Richmond, VA 23230 804-287-8200     
Oehrlein & Associates Architects - 1350 Connecticut Ave. NW, Suite 412, Washington, DC 20036 202-785-7336     
Office for Metropolitan Architecture - 180 Varick Street, Suite 1328, New York, NY 10014 212-337-0770     
Office of Purchasing & Supply Services - 13300 Old Marlboro Pike, Room 20, Upper Marlboro, MD 20772 301-952-6560     
Office of Univeristy Architect - 4620 Wisconsin Avenue, NW, 3rd Floor, Washington, DC 20016 202-885-2311     
Oishi Architects - 1405 Wiltwyck Road, Baltimore, MD 21209 410-823-4931     
Okks Studios Inc - 8401 Connecticut AVenue, Suite 350, Chevy Chase, MD 20815 301-718-0080     
Olaya Studio Arquitectura - 4621 Hazel Avenue, Philadelphia, PA 19143 215-387-2011     
OLBN Architectural Service, Inc. - 600 East Jefferson Street, Suite 406, Rockville, MD 20852 301-340-0202     
Old Dominion University Facilities Management - 4401 Powhatan Avenue, Norfolk, VA 23529 757-683-4269     
Old Line Architects - 1340 Smith Avenue, Suite 200, Baltimore, MD 21209 443-977-8387     
Olian Design Group, LTD - 5480 Wisconsin Avenue, Suite LL6, Chevy Chase, MD 20815 301-652-6664     
Olive Architecture - 207 East Hargett Street, Suite 100, Raleigh, NC 27601 919-838-9977     
Olive Architecture - 436 North Harrington Street, Suite 140, Raleigh, NC 27603 919-838-9934     
Oliver Incorporated - 1116 South Main Street, Suite 100, Blacksburg, VA 24060 540-552-5548     
Oliver, Webb, Pappas & Rhudy, Inc. - 200 Country Club Drive, SW, Blacksburg, VA 24060 540-552-2151     
Oliveri Architects - 32707 US Highway 19, Palm Harbor, FL 34684 727-781-7525     
Ollmann Ernest Martin - 509 South Slate Street, Belvidere, IL 61008 815-544-7790     
Olsen & Associates - 126 South Main St., Butler, PA 16001 724-282-4786     
Olsen & Associates - 126 South Main Street, Butler, PA 16001 724-282-4786     
Olsen Design Group Architects, Inc. - 2345 Bernville Road, Reading, PA 19605 610-371-9606     
Olson Kundig Architects - ​​159 South Jackson Street, Suite 600, ​​Seattle, WA 98104​​ ​​206-624-5     
OMNI Associates - 207 Jefferson Street, Fairmont, WV 26555 855-367-1417     
Omniplan Incorporated - 1845 Woodall Rodgers, Suite 1500, Dallas, TX 75201 214-826-7080     
ON Architecture - 2030 Powers Ferry Road, Atlanta, GA 30339 678-336-8503     
One Architecture, PLC - 8801 North Central Avenue, Suite 101, Phoenix, AZ 85020 602-266-2712     
One Group Design - 12512 Grand Elm Street, Clarksburg, MD 20871 (301) 972-2812     
ONeil & Manion Architects, PA - 6931 Arlington Road, Suite 306, Bethesda, MD 20814 301-654-7004     
Onion Flats Architecture - 126 East Market Street, Philadelphia, PA 19106 215-426-6466     
Onyx Creative, Inc. - 811 Cromwell Park Drive, Glen Burnie, MD 21601 410-863-1302     
Onyx Creative, Inc. - 25001 Emery Road, Suite 400, Cleveland, OH 44128 216-223-323246     
Opus Architects and Engineers - 10350 Bren Road West, Minnetonka, MN 55343 952-656-4444     
OPX, PLLC - 21 Dupont Circle, NW, Suite 200, Washington, DC 20038 202-822-9797     
Orange County Administration - 111 West Main Street, Orange, VA 22960 540-672-3313     
Orcutt and Winslow - 3003 North Central Avenue, 16th Floor, Phoenix, AZ 85012 602-257-1764     
Orcutt Winslow - 2929 North Central Avenue, 16th Floor, Phoenix, AZ 85012 602-257-1764     
Origin Architecture PC - 55 Union Place, Suite 219, Summit, NJ 07901 000-000-0000     
Orsak Architects, Inc. - 11138 Stephalee Lane, North Bethesda, MD 20852 301-231-6699     
Ortega D.A.S - 5419 Masser Lane, Fairfax, VA 22032 703-250-1628     
OS Design-build LLC - 333 Green Street, Alexandria, VA 22314 703-375-9183     
OS-Design-Build, LLC - 3 Green Street, Alexandria, VA 22314 703-375-9183     
Oswell and Nitishin Architects - 2030 Powers Ferry Road, Suite 204, Atlanta, GA 30339 678-336-8503     
OTIE RS&H Joint Venture - 1033 N. Mayfair Road, Suite 200,, Milwaukee, WI 53226 414-257-4200     
OTJ Architects - 580 Water Street, SW, Suite 300, Washington, DC 20024 202-621-1000     
OTJ Architects - 1143 West Rundell Place, Suite 101, Chicago, IL 60607 312-858-2662     
OTJ Architects, Inc. - 1232 31st Street, NW, Washington, DC 20007 202-939-0300     
OTJ Architects, Inc. - 1412 Eye Street, NW, Washington, DC 20005 202-621-1000     
OTJ Architects, Inc. - 1411 Eye Street, NW, Washington, DC 20005 202-939-0300     
OTJ Architects, Inc. - 1232 31st Street, NW, Washington, DC 20007 202-939-0300     
Outerbridge Horsey Associates, PLLC - 1228 1/2 31st Street, NW, Washington, DC 20007 202-337-7334     
Overcash Demmitt Architects - 2010 South Tryon Street, Suite 1A, Charlotte, NC 28203 704-332-1615     
Overton & Associates - 909 Baltimore Boulevard, Westminster, MD 21157 410-386-1600     
Owen Slagle III, Architect - 2170 Hulton Road, Verona, PA 15147 412-828-5710     
Owens Technologies, Inc. - 1121 Luxmanor Road, Rockville, MD 20852 301-213-4845     
OWPR Architects & Engineers - 200 Country Club Drive, SW Plaza One, Blacksburg, VA 24060 540-552-2151     
Ox Hill Companies - 4031 University Drive, Suite 400, Fairfax, VA 22030 703-362-8187     
Oxford Architecture - 1205 Paris Avenue, Suite 205, Nashville, TN 37212 615-256-3455     
Ozell Stankus Associates, Architects - 730 Peachtree Street, Suite 500, Atlanta, GA 30308 404-874-7460     
Oztan Studio, LLC - 909 Rose Avenue, 4th Floor, North Bethesda, MD North Bethesda 732-318-5148