Welcome
Workshop 315 is a full-service architecture studio specializing in custom residential and small commercial design. We partner closely with our clients to bring their unique visions to life. Explore our design services and process below.
Projects types include new construction, remodels and additions of existing home, second story additions, basement remodels, accessory dwelling units (AADU/DADU), sustainable design, commercial tenant improvements (TI), restaurant and retail commercial spaces.
Portfolio
Our team has worked on many projects over the past years. See the highlights of particular projects we enjoyed by browsing our portfolio.
Process & Frequently Asked Questions
Have questions about how we like to work or what to expect for the architectural process? Learn more on our Process and Frequently Asked Questions page.
Seattle’s New Land-Use Code 2026
We broke down the most recent changes to Seattle’s land-use code as amended by council bill 120993 for neighborhood residential zone. Take a look to see what is contained in the code.
Feasibility Studies
Understanding a site's true potential is the crucial first step in any project. We provide comprehensive feasibility studies to uncover the legal and physical possibilities of your property.
Specializing in Seattle Neighborhood Residential (formerly Single-Family) zoning, we offer quick public-record reviews for potential home buyers, as well as thorough site evaluations with field-verified measurements.