About Us

Plath & Company is dedicated to building and renovating fine homes and historic structures of uncompromising quality and enduring value. For 40 years, we have focused on our core values of excellence in all that we do, collaboration centered on a common goal, safety for all associates, and the time-honored tradition of customer satisfaction.

We’re equally as dedicated to creating positive experiences for our clients and coworkers, and in the process have earned their trust and loyalty. We achieve this with straightforward teamwork, transparent business practices, and proactive problem solving.

Our People

Steve Plath

Steve Plath

Founding Partner/President Emeritus

Steve attributes his early love for building things to watching his do-it-yourself dad in action. He aspires to capture the essence of a building's history, and has led remodeling projects of more than 200 historically significant homes and the preservation of seven of San Francisco's treasured landmark buildings, earning Plath & Company four California Preservation Foundation awards. Steve is equally versed in building distinctive comtemporary homes, including a recent Steve Erhlich-designed residence.

Outside of work, Steve flexes his creative muscle by designing sets and acting in local theater productions, collecting and repairing vintage British sports cars, playing tennis and listening to any music from the sixties. He lives in San Anselmo with his wife.

JB Ferrarone

JB Ferrarone


JB joined Plath & Company in 2006, and promptly demonstrated his project management savvy by leading intricate projects ranging from ultra-modern new homes to historical Pacific Heights renovations. With nearly 20 years industry experience, JB became a partner in 2011; and in 2014, he stepped into the role of President. JB is committed to upholding founding partner Steve Plath's company vision of honesty, artistry, and excellence.

An avid outdoorsman, JB enjoys fly fishing and mountain biking in Marin, where he lives with his wife and three children.

Tom Hall

Tom Hall

Vice President

A passion for fine carpentry and Victorian architecture made Tom a great fit when he joined the company in 1986. He became a partner in 1991, bringing meticulous technical and communication skills to Plath & Company's leadership. He has a reputation of deftly trouble-shooting complicated projects while delivering them on time and on budget. Among the many Historic Renovation projects Tom has led are The Gas Light Building (SF landmark 58), The McMullen House (SF landmark 123), and the detailed preservation and restoration of The Bourn Mansion (SF landmark 38).

Tom is a 28-year resident of San Francisco's Potrero Hill. He is a cycling enthusiast, but considers being a dad his greatest labor of love.

Community & Charitable Giving

  • Plath & Company is committed to serving our community.

    We contribute time and resources to these charitable causes and local organizations:

    Boys and Girls Clubs of San Francisco

    Breakthrough Collaborative

    CA State Parks Foundation

    Cal Trout

    California Preservation Foundation

    Department of Sheriffs, San Francisco


    Gateway High School

    Harbor Point Charitable Foundation

    Institute of Classical Architecture & Art


    National Trust for Historic Preservation

    Raphael House

    San Francisco Heritage Foundation

    Swords to Plowshares

    Tipping Point

    Tomales History Center