Signum Architecture
Napa architecture studio integrating Passive House design into residences, wineries and hospitality buildings.
What they're known for
Signum spans an early Sonoma Passive House retrofit and the certified Fountaingrove rebuild on a site lost in the Tubbs Fire.
Signum Architecture is a Napa-based practice founded by Juancarlos Fernandez and Jarrod Denton, working across residences, wineries and hospitality buildings. Its Fountaingrove house replaced a home destroyed by the 2017 Tubbs Fire and is recorded as Phius CORE 2021 certified. Denton holds an individual Certified Passive House Consultant credential; the firm's Sonoma retrofit is an early precedent in U.S. Passive House construction. Its work joins site-responsive architecture, low-energy envelopes and building-science coordination.
Capabilities
- Custom residential architecture
- Passive House design and enclosure coordination
- Wildfire Rebuild residential design
- Winery and hospitality architecture
- Site Responsive planning and material selection
- Energy Performance and consultant coordination
Performance focus
- Passive House design
- Airtight and insulated envelopes
- LOW Energy residential systems
- Wildfire Rebuild coordination
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Sources
Facts verified November 2026. Compound is an independent editorial directory and is not affiliated with this company unless stated.