Creating an optimal building experience
O'Hara & Gercke was established in 2002 by Kevin O'Hara and James Gercke to focus on residential construction. In 2022, Zach Mitchell joined as a principal, expanding the firm's management and construction capabilities.
We emphasize effective communication, rigorous planning, transparency in budgeting and scheduling, attentive project management and outstanding execution. We typically participate in the earliest stages of a project to offer technical input and budget guidance.
Sustainable construction is central to our work. We have built to Passive House and Net Zero standards, earned Efficiency VT's “Best of the Best” award for Energy Efficient New Construction, and completed LEED Silver certified homes.

Three principals, one standard.
Established in 2002 by Kevin O'Hara and James Gercke, and joined in 2022 by Zach Mitchell.
Kevin O'Hara
Principal
Co-founded O'Hara & Gercke in 2002 with a focus on residential construction and an uncompromising standard of craft.
kevin@oharagercke.comJames Gercke
Principal
Co-founded the firm in 2002, guiding projects from early budgeting through meticulous execution.
jgercke@oharagercke.comZach Mitchell
Principal
Joined as a principal in 2022, expanding the firm's management and construction capabilities.
zach@oharagercke.comHomes that perform as beautifully as they look.
We’ve built to Passive House and Net Zero standards and earned recognition for energy-efficient construction. A few of the techniques we bring to a project:
LEED Silver Certified
Third-party verified sustainable building performance.
Net Zero & Passive House
Homes that make as much energy as they use — or nearly so.
Efficiency VT — Best of the Best
Awarded for Energy Efficient New Construction.
Energy Star Partner
A trusted partner for high-performance homebuilding.
Ready to define, budget and build?
We’d love to hear about your project.