About Us

O'Neil & Manion Architects P.A. is a professional service corporation located in Bethesda, Maryland. Sara P. O'Neil-Manion, AIA and William C. Manion, AIA established the firm in 1977. Our approach to design is collaborative to provide an elegant, creative design, responsive to our clients’ needs, budget and time schedule, considering environmental sustainability and neighborhood history. We team with our client(s) in defining projects through programming (discovery & definition of the project). We assist our clients in making their design solution a reality assisting through jurisdictional approvals, bidding and construction. O'Neil & Manion Architects' work has been recognized with many design awards and featured in Architectural Digest, Architecture, Builder Magazine, Qualified Remodeler, Glass Magazine, Remodeling, The Washington Post Magazine, Washingtonian Magazine, Baltimore Magazine, Southern Living and local publications.Services include:
• Site evaluation and campus planning
• Building and site feasibility surveys
• Due-diligence reports
• Feasibility and master plan studies
• Programming, Discovery & Definition
• Criteria development and analysis
• Project scheduling (Critical Path Method)
• Architectural design services including:
Schematic Design, Design Development
Construction Documents, Specifications
• Sustainable (LEED) design
• Building Information Modeling (BIM)
• Space planning and interior design
• Real estate development services
• Jurisdictional Approval Assistance
• Bid and Negotiation services including:
Issuing project for bid, Pre-bid services
Receipt and evaluation of Bids
Bid negotiation assistance
• Construction services:
Pre-Construction Services
Construction administration
Client representation
• Approval process representation
• Post occupancy services
• Expert Witness representation

Business size

1-10 employees

Commercial presence