Three decades advising the developers, architects and builders who make a healthier home, community and world something you can actually stand in.
Land acquisition & development · Seattle
01 The advisory
For over three decades Tadashi Shiga has served as a trusted advisor to developers, third-party brokers, architects and contractors — navigating the market with a methodical outlook to determine long-term trajectories, and leveraging a building-science background to analyse what a site can really become.
The work sits in the gap between what a parcel is worth today and what it is capable of. That gap is found with data, judgement, and a network built one delivered project at a time.
Finding the parcel before it is obvious — a methodical read of trajectory, entitlement and timing rather than a reaction to what already sold.
Feasibility through the lens of building science: what a site can hold, what the building will cost to run, and whether the ambitious version pencils.
Well-established development contacts across the Puget Sound — the relationships that turn a promising site into a delivered building.
02 The envelope
A high-performance building is not a normal building with a better furnace. It is an envelope assembled in the right order — and the order is the entire argument. Scroll, and it goes together.
Section through the wall · nine layers · drawn to sequence, not to scale
03 Featured project — Solis
A first-of-its-kind building in Seattle, Solis is designed to use 54% less energy than the national median multifamily building — and is the largest Passive House certified multifamily project in Washington State.
less energy than the national median multifamily building.
Energy use intensity, indexed. Drag the image to move between the drawing and the building.
04 The approach — Evergreen Certified
Making green building easy is how we take action on a higher purpose.
We set aside wishy-washy idealism and focus on practical ways to enable more builders to develop healthy, efficient, responsibly-built homes.
The approach has always been to envision what is doable — within stretching distance for a builder — then remove the barriers that would stop them reaching for more. Sustainability is a process of learning and building new capability. We meet clients wherever they are, and help them take the next step that fits their goals.
The case here is not made on idealism. It is made on energy bills, durability, occupant health, and what the building is still worth in twenty years. Bring the skepticism — it makes the analysis better.
05 The journal
06 Let's connect
Whether you are evaluating a site, weighing whether the high-performance version of a project pencils, or looking for the parcel nobody has priced yet — start with a conversation.