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Business Details
19 Years
experience
Custom Interior Design Services in Washington DC
Established in 2007, Diana Hannes Design delivers tailored interior design solutions for residential and commercial clients across the United States. Our expertise spans from private homes in Washington DC, Virginia, and California to commercial offices nationwide. We specialize in creating unique, functional spaces that reflect clients' lifestyles while maximizing value through trade pricing and strategic project management. Our team combines 15 years of industry experience with a deep understanding of design psychology, material innovation, and spatial planning. We collaborate closely with architects, builders, and tradespeople to ensure seamless execution from concept to completion.

Our process prioritizes client needs through personalized consultations, detailed design concepts, and meticulous implementation oversight. We maintain industry leadership through continuous education and partnerships with premier vendors, offering access to exclusive products at competitive pricing. Client satisfaction remains our foremost priority, evidenced by our referral-based growth and commitment to exceeding expectations on every project.
Services
Interior Design Project Management Furniture Procurement Color Consultation Window Treatments Lighting Design Space Planning Trade Pricing Access Art Placement Custom Furnishings
Details
  • Year established: 2007
Highlights and features
  • 15 years of experience in residential and commercial interior design
  • Access to exclusive trade pricing on materials and furnishings
  • Comprehensive project management from concept to completion
  • Personalized approach combining psychology and design expertise
  • Proven track record of client satisfaction through referrals
Services
Interior Design
Full-service interior design for residential and commercial properties. Specializing in custom layouts, color schemes, and material selection. Combines functionality with aesthetic appeal to create timeless spaces that meet client-specific needs and budgets.
Project Management
Comprehensive project coordination from concept to completion. Includes vendor management, timeline scheduling, and quality control. Ensures seamless execution while maintaining budget constraints and design integrity throughout the implementation process.
Furniture Procurement
Sourcing premium furniture at trade prices from exclusive vendors. Offers custom and off-the-shelf options with strategic placement guidance. Focuses on durability, style, and functionality to enhance interior spaces effectively.
Color Consultation
Expert color palette development for walls, furnishings, and accessories. Considers natural light variations and room function. Creates cohesive visual flow throughout properties while ensuring long-term aesthetic satisfaction.
Window Treatments
Custom drapery, shutters, and specialty shades tailored to client preferences. Addresses privacy, light control, and decorative needs. Combines premium materials with precise installation for optimal functionality and visual impact.
People
Diana Hannes
Founder & Lead Designer
Established DHD in 2007 after 15+ years as Australian magazine editor. Combines psychology background with design expertise. Holds degrees in Psychology, Economics, and Marketing. Specializes in translating client visions into functional, beautiful spaces.
Questions
What areas do you serve?
We provide services across the United States, including Washington DC, Virginia, Maryland, Delaware, New Jersey, Idaho, and California.
What services do you offer?
We offer full interior design, project management, furniture procurement, color consultation, window treatments, lighting design, and custom furnishings.
How are your design fees structured?
Design Concept Phase starts at $1,250. Project Management fees are 20% of total project cost. Additional consultations billed at $200/hour.
Do you offer trade pricing?
Yes, we provide exclusive trade pricing of 10-50% off retail prices for materials, furniture, and services through our vendor network.
How do I schedule an appointment?
Please call +1 202 262 2443 in advance to schedule a consultation at our Georgetown, Washington DC office.
What makes your approach unique?
Our psychology background informs client-centric designs. We combine 15+ years of experience with continuous industry education to deliver timeless, functional spaces.