Business Details
20 Years
experience
Your Trusted Partner for Architectural Design in Seattle
Founded in 2006, H2D Architecture + Design is a woman-owned, full-service architecture and interior design firm licensed in Washington and Oregon. Our team brings over 17 years of combined experience in creating custom residential, commercial, and sustainable designs. We specialize in tailoring solutions for new constructions, remodels, and high-performance projects, utilizing 3D modeling, hand-sketches, and sustainable materials. Certified as a Women Business Enterprise (WBE), we prioritize client collaboration, universal design principles, and energy-efficient practices. Our team includes registered architects and interior designers with expertise in diverse styles, from midcentury modern to contemporary.We serve clients in Western Washington, focusing on challenging sites, complex projects, and personalized design processes. Our regional knowledge ensures compliance with local building codes and jurisdictions while delivering spaces that align with clients' visions. Our commitment to quality is evidenced by our repeat clientele and partnerships with builders, engineers, and contractors. With multiple team members holding advanced degrees and certifications in sustainable design, we ensure every project balances architectural integrity with environmental responsibility.
Services
Custom New Construction
Remodels & Additions
Interior Design
Commercial Design
Sustainable Design
Bathroom Upgrades
Kitchen Renovations
ADU & DADU Design
2nd Story Additions
High Performance Design
Details
- Year established: 2006
Highlights and features
- We work closely with structural engineers and licensed contractors to ensure project success.
- Our team includes Certified Passive House Designers and Registered Architects in WA and OR.
- Licensed in Washington and Oregon with expertise in local building jurisdictions.
- Tailored design processes for complex projects, including DADUs and seismic retrofits.
- Certified as a Women Business Enterprise (WBE) by the state of Washington.
Associations and certifications
- Washington State Office of Minority and Womens Business Enterprises
What people say
Responsive, practical yet creative
Timely, cordial, and professional communication
Spot-on with what we were hoping for
Attention to detail
Thrilled with results
Services
Custom New Construction
H2D designs custom homes tailored to client visions, balancing aesthetics and functionality. Our team handles projects from traditional to contemporary styles, incorporating sustainable materials and high-performance design principles. We serve clients across the Pacific Northwest, providing 3D modeling and technical plans to ensure precise execution.
Remodels & Additions
We specialize in transforming existing spaces through renovations and additions. Our process preserves structural integrity while integrating modern designs, universal accessibility features, and energy-efficient systems. Services include whole-house remodels, second-story additions, and seismic retrofitting for optimal safety and functionality.
Commercial Design
Our commercial design services create functional, brand-aligned spaces for retail, offices, and civic buildings. We collaborate with clients to develop tenant improvements, restaurants, and salons that enhance business operations while meeting code requirements and sustainability standards.
Interior Design
H2D's interior designers create cohesive environments through color coordination, material selection, and furniture layout. We offer full-service design including 3D renderings, electrical plans, and finish boards to ensure spaces reflect client preferences while maintaining architectural harmony.
High Performance Design
We integrate energy-efficient systems and eco-friendly materials to achieve high-performance buildings. Our expertise includes Passive House standards, healthy indoor air quality, and durability-focused construction methods. These designs reduce environmental impact while maximizing long-term cost savings for clients.
People
Heidi Helgeson
Owner & Principal Architect
Registered architect in WA/OR with 20+ years of experience in residential and commercial projects. Founder of H2D in 2006, Heidi combines artistic vision with technical expertise in passive house design and sustainable materials.
Lisa Montalvo
Architectural & Interior Designer
Licensed designer with expertise in commercial and residential projects. Lisa specializes in incorporating bold natural colors into interiors while managing complex design challenges across diverse building types.
Sarah Thompson
Project Architect
Licensed in WA/CA with 15+ years in residential and healthcare design. Sarah focuses on custom single-family homes, emphasizing client relationships and problem-solving through innovative architectural solutions.
Lauren Groth
Interior Designer
Specializes in modern new construction and midcentury remodels. Lauren prioritizes functional design solutions that enhance daily living, drawing from 10+ years of experience in custom residential and commercial projects.
Cristy Weller
Architectural Designer
Experienced in single-family homes, remodels, and multi-family projects. Cristy excels in transforming client visions into personalized residential designs while maintaining a focus on collaborative, client-centered processes.
Questions
What type of projects require a permit?
Permits are generally required for new construction, additions, and most interior remodels. The type of permit varies on project scope and jurisdiction.
What kind of projects does H2D take on?
Residential new construction, additions, interior remodels, outdoor living spaces, DADUs, and small commercial projects.
How long does the design process take?
Timeline varies based on project size and permitting wait times. Contact us for specific estimates.
Do you provide interior design services?
Yes, our in-house interior designer works on color coordination, material selection, and space planning for residential projects.
Can you help with small projects like bathroom remodels?
Yes, we take on projects as small as bathroom or kitchen remodels while maintaining the same high-quality standards.
What geographic areas do you service?
We primarily work in Western Washington, with most projects located in the greater Seattle metropolitan area.
