About Us

H2D Architecture + Design

H2D Architecture + Design is a Seattle architecture firm founded in 2005 by Heidi Helgeson. The firm’s mission is to work as a team with our clients, listening and developing their objectives and visions into beautiful architecture. Whether we are working on a small remodel, new custom home, addition, multi-family dwelling, or a small commercial space, our focus is on architectural detail, budget feasibility, and incorporating environmentally friendly materials and methods.

H2D enjoys working on a variety of different project types, scales, and locations, from challenging sites to unique design requests. Each project that we take on is unique, therefore we strive to tailor our design process to fit the needs of each project to best serve each individual client. H2D uses a variety of methods to design and present the project to the client including: 3-d modeling, hand-sketches, renderings, technical plans, color coordination, and material sample layouts.

5F1A5854PRINCIPAL– Heidi Helgeson
Architect and Principal

EDUCATION: Saint Olaf College, B.A. in studio art and Asian studies; University of Washington, Master of Architecture

REGISTRATION: State of Washington Architecture License, American Institute of Architects, AIA Seattle, NCARB

BACKGROUND: After receiving her Master of Architecture degree from the University of Washington, Heidi Helgeson worked at a variety of architecture firms gaining experience on a wide variety of project types and styles from single family and multi-family residences to museums, libraries, and churches.  Heidi founded H2D architecture + design in 2005.  In addition to working at H2D, Heidi is an artist and athlete – enjoying time spent painting and sketching as well as participating in triathlons and running events.




  • Licensed Architect in the State of Washington
  • Healthy Homes Training for Building Professionals
  • American Institute of Architects
  • Northwest EcoBuilding Guild
  • Built Green
  • Phinney Neighborhood Association
  • Pacific Northwest JET Alumni
  • CORA (Congress of Residential Architects) 


    – Lisa Montalvo

    EDUCATION: The Pennsylvania State University, Bachelor of Architecture and Minor in Architecture History; The Art Institute of Seattle, Associate of Arts in Interior Design

    BACKGROUND: After completing her education, Lisa Montalvo worked as an Interior Designer on a variety of projects including commercial, single-family residences, and multi-family residences. She draws inspiration from bold colors in nature and loves to incorporate them in design. Outside of H2D, Lisa is an adaptive Crossfit competitor, softball player, and loves to cook.




    james-drumwrightARCHITECTURAL DESIGNER – James Drumwright IV

    EDUCATION: Master of Architecture from Louisiana Technical University

    BACKGROUND:  James received his Master of Architecture from Louisiana Tech University and worked in Louisiana for a short time before moving to Washington in 2015 to make the Puget Sound area his new home.  He has worked on a combination of municipal government projects and mixed-use multi-family buildings, but he is ultimately interested in the design and construction of quality homes that promote harmony between their human and natural environments.  In his free time, James enjoys studying sustainable design and building methods, as well as being outside, hiking, walking, gardening, and indulging in some video games from time to time.





    EDUCATION: Bachelor of Architecture from California Polytechnic State University, San Luis Obispo

    BACKGROUND:  Beth has experience working on a variety of project types including renovations, remodels and new construction.  She has an interest in the interaction between light, color, sound and how they interplay to create harmonious living spaces.  Beth enjoys learning about and implementing sustainable and environmentally responsible methods into her knowledge and understanding of building, construction and design.  She enjoys expanding her knowledge of music, sound and every once in a while, finds time to play the banjo.