Business Details
36 Years
experience
Trusted Architects in Washington, D.C.
DeLizzio Seligson Architects brings over 25 years of experience and more than 600 completed projects across the Washington Metropolitan Area. Founded in 1990, our firm combines the expertise of Dennis DeLizzio and Barbara Seligson, whose 50+ combined years in architecture ensure every project benefits from deep industry knowledge. We specialize in residential, religious, educational, community, commercial, and historical architecture, offering full-service design and engineering solutions. Our client-centric philosophy prioritizes personalized attention, with one of our principals serving as your dedicated architect throughout the project lifecycle. We integrate architectural, structural, mechanical, plumbing, and electrical engineering services while guiding clients through contractor selection, budgeting, and construction management.Our commitment to ethical design extends to improving communities through thoughtful planning and historic preservation. Licensed in Maryland, Virginia, and Washington, D.C., we serve private homeowners and nonprofit institutions with the same rigor and creativity. Our work has earned recognition from the American Institute of Architects and features in publications like the Maryland & DC Construction Journal. With a focus on listening to client needs, we transform visions into functional, beautiful spaces that respect budgets and timelines.
Services
Residential Architecture
Religious Architecture
Educational Architecture
Historic Restoration
Interior Design
Master Planning
Feasibility Studies
Fundraising Support
Arts & Furnishings
Construction Management
Details
- Year established: 1990
Highlights and features
- We offer 25+ years of experience with 600+ completed projects in the Washington Metropolitan Area.
- Our principals provide personalized service as your dedicated project architects from concept to completion.
- We integrate architectural, structural, and engineering services under one roof for seamless execution.
- Our work has earned recognition from the American Institute of Architects and industry publications.
- We specialize in navigating complex historic preservation and zoning requirements for successful projects.
What people say
Most responsive, professional firm
Stunning transformations
Personalized service
Expertise in historic projects
Within budget delivery
Services
Residential Architecture
We specialize in residential projects including additions, renovations, and new construction. With over 300 completed projects, our team creates functional, aesthetically pleasing spaces tailored to homeowner needs while respecting budget constraints. Our services span from initial concept design to construction administration, ensuring seamless execution.
Religious Architecture
Our firm has extensive experience in designing and renovating religious spaces, including churches, chapels, and theological institutions. We combine liturgical expertise with practical design to create sacred environments that inspire congregations and support community needs through all project phases.
Historic Restoration
We preserve historical integrity while modernizing structures for contemporary use. Our expertise includes navigating zoning regulations, restoring architectural details, and integrating modern systems into historic buildings. Projects range from private estates to public landmarks across the Washington region.
Interior Design
Beyond exterior architecture, we design interior spaces for residential, commercial, and institutional clients. Our team creates functional layouts with custom furnishings and artistic elements, ensuring spaces meet both aesthetic and practical requirements while maintaining cohesive design language.
Master Planning
We develop comprehensive master plans for estates, campuses, and public spaces. Our approach balances long-term vision with immediate needs, creating adaptable frameworks that guide future growth while optimizing land use and environmental considerations.
People
Dennis DeLizzio
President
Licensed architect with 45+ years of experience, founder of DeLizzio Seligson Architects since 1990. Recipient of AIA Design Awards and featured in Who's Who Among American Professionals. Specializes in institutional and religious projects.
Barbara Seligson
Vice President
Architect, artist, and educator with 35+ years of experience. Holds Master of Architecture and Fine Arts degrees. Expert in community projects and historic preservation, with work exhibited nationally and featured in industry publications.
Questions
What architectural services do you specialize in?
We specialize in residential, religious, educational, historical, and community architecture with full-service design and construction management.
How do you handle complex zoning requirements?
Our team has extensive experience navigating zoning regulations, historic preservation boards, and government agency approvals for successful project outcomes.
Can you assist with fundraising for institutional projects?
Yes, we create marketing materials and photo-realistic renderings to help clients secure financing and donor support for their projects.
What makes your firm different from others?
One of our principals serves as your dedicated architect throughout the project, combining 50+ years of experience with personalized attention.
Do you work outside the Washington Metropolitan Area?
While based in Washington, D.C., we hold licenses in Maryland and Virginia with reciprocity options across all 54 U.S. jurisdictions.
