What departments does JMA have?

JMA has employees across 3 departments including Consultant, Education, Human Resources.

What is the largest department at JMA?

The largest department at JMA is Consultant with 1 employees.

Where are JMA employees located globally?

JMA has employees across 1 continents and 2 countries including United States Of America, Mexico.

How has JMA's team size changed over time?

JMA's team has grown from approximately 12 to 18 employees based on available data.

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JMA Employee Directory

ConstructionCalifornia, United States11-50 Employees

JMA is a Santa Rosa-based construction firm founded in 1987 by Jim Murphy and Jay True. The company builds its culture around stewardship and core values such as integrity, honesty, and fairness, with a focus on listening to clients and prioritizing their interests throughout projects. Construction is approached as a collaborative process that requires attention to detail and humility in handling client resources.

The leadership mantle is currently held by Jesse Malone and Steve Ronchelli; their formal partnership began in 2016, and the pair have served JMA's clients for a combined four decades. The firm operates with a mid-sized team and emphasizes a collaborative, detail-oriented delivery approach within the construction industry. Based in Santa Rosa, California, JMA positions itself as a principled builder that prioritizes client care and thoughtful execution over simply meeting requirements.

JMA Global Highlights

North America
46

United States Of America
45
Mexico
1

JMA's Leadership

C. J.
Task Manager
Mobile Phone
Email
D. N.
Safety Manager
Mobile Phone
Email
E. T.
Human Resource Manager
Mobile Phone
Email
L. S.
Senior Consultant
Mobile Phone
Email
F. W.
Male Lacrosse
Mobile Phone
Email
P. P.
Superintendent
Mobile Phone
Email
S. R.
Human Resources Business Partner
Mobile Phone
Email

JMA Employee Metrics

100%

50%

2026

2025

Program & Project Management
Civil Engineering & Construction
Arts & Design
Business
Accounting
Other

Contact profiles from JMA

Name

Title

Contact

Location

Last Update

C. J.
Task Manager
Mobile Phone
Email
Oct 22, 2024
D. N.
Safety Manager
Mobile Phone
Email
Oct 17, 2024
E. T.
Human Resource Manager
Mobile Phone
Email
Oct 23, 2024
L. S.
Senior Consultant
Mobile Phone
Email
Oct 23, 2024
F. W.
Male Lacrosse
Mobile Phone
Email
Oct 21, 2024
P. P.
Superintendent
Mobile Phone
Email
Oct 18, 2024
S. R.
Human Resources Business Partner
Mobile Phone
Email
Oct 17, 2024

Frequently Asked Questions

What is JMA known for?

JMA was founded in 1987 operates in the Construction industry; you can contact the main corporate office by phone at

+1-707-576-****

. Explore JMA's company overview page for more information.

What is JMA's most common email format?

JMA employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more JMA email formats with LeadIQ.

How many employees does JMA have currently?

JMA has approximately 35 employees as of July 2026. These team members are located across 1 continents, including North America.

Who are JMA's key employees and leadership?

As of July 2026, JMA's key employees include:

Task Manager: C. J.
Safety Manager: D. N.
Human Resource Manager: E. T.
Senior Consultant: L. S.
Male Lacrosse: F. W.

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JMA Employee Directory

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