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JMA (Jim Murphy and Associates)

JMA (Jim Murphy and Associates)

Home Builders
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About Us

In 1987 Jim Murphy and Jay True created the partnership that we now know as JMA. The fundamental principle behind their partnership was to prove to the industry and themselves that a construction firm could be run with integrity, honesty, fairness and still be healthy and profitable. This mission was the reason that the company’s culture was founded in stewardship; truly listening to clients and sincerely putting their best interests above their own. They soon realized that this principle virtue would be the foundation of the company, the source of their strength and the inspiration behind the idea of truly being an uncommon builder. Today the mantle is carried by Jesse Malone and Steve Ronchelli. While their formal partnership started in 2016, they have served JMA’s clients for a combined 40+ years. JMA now includes over 40 employees, all of whom share a sincere commitment to our culture of stewardship. To all of us, stewardship means we accept not only the responsibility to perform our work in the best way we know how but also placing the needs of others before our own. Construction is a collaborative process that requires paying attention to every detail. We show this by taking note of the feelings and reasons behind words spoken during client interactions, treating our clients resources with care and approaching each task with humility.

Services Provided

Home Additions, Home Extensions, Home Remodeling, Home Restoration, House Plans, Land Surveying, New Home Construction, Pool House Design & Construction, Custom Homes, Commercial Construction

Areas Served

Bloomfield, Cotati, Forestville, Fulton, Graton, Kenwood, Larkfield-Wikiup, Penngrove, Petaluma, Rohnert Park, Roseland, Santa Rosa, Sebastopol, Valley Ford, Windsor, Napa, St. Helena, Calistoga, Yountville, Rutherford, Oakville, American Canyon


2017 Best of the Best Projects in America – American AgCredit Corporate Headquarters, Engineering News Record 2016 Best General Contractor Award, Northbay BIZ 2011 Custom Builder of the Year, Custom Home magazine 2009 Safety Award For Excellence, National Association of Home Builders


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29 Projects

Inspiration for a large mediterranean master medium tone wood floor alcove shower remodel in San Francisco with furniture-like cabinets, medium tone wood cabinets, a vessel sink and a hinged shower door

East Sonoma County Estate

Calistoga, CA
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Business Details

Business Name

JMA (Jim Murphy and Associates)

Phone Number

(707) 576-7337


464 Kenwood Court, #B
Santa Rosa, CA 95407

Typical Job Cost

$2.5 million - 50 million

JMA’s new residential estate home building costs typically run $600-$1000/square foot — and as much as $1100-$1200/square foot. That’s exclusive of land, infrastructure and soft costs (architectural fees, consultant fees, permits, etc.). Our typical remodeling costs are comparable, depending upon the scope. Commercial/winery projects range so widely in scope and complexity, it is impossible to state a range here.

License Number

CA #505531


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2 Ideabooks

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Frequently Asked Questions