JMA Employee Directory

ConstructionCalifornia, United States11-50 Employees

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 JMAs 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.

Find JMA employees' phone numbers or email addresses

JMA Global Highlights

Location
Employees

North America
44

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  • United States Of America
    44

JMA's Leadership

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    J. A.
    Owner
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  • Stylized image of a person
    J. D.
    Owner
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    C. J.
    Task Manager
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    G. A.
    Arizona Manager
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    L. S.
    Senior Consultant
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    J. R.
    Hotel Consultant
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    P. P.
    Superintendent
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    S. R.
    Human Resources Business Partner
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JMA Employee Metrics

100%
50%
0%
2026
2025
  • Program & Project Management
  • Civil Engineering & Construction
  • Arts & Design
  • Business
  • Accounting
  • Other

Contact profiles from JMA

Name
Title
Contact Info
Location
Last Update
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    J. A.
    Owner
    Phone icon
    United StatesWisconsin
    Oct 23, 2024
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    J. D.
    Owner
    Phone icon
    United StatesFlorida
    Jul 17, 2025
  • Stylized image of a person
    C. J.
    Task Manager
    Phone icon
    Oct 22, 2024
  • Stylized image of a person
    G. A.
    Arizona Manager
    Phone icon
    United StatesArizona
    Oct 22, 2024
  • Stylized image of a person
    L. S.
    Senior Consultant
    Phone icon
    Oct 23, 2024
  • Stylized image of a person
    J. R.
    Hotel Consultant
    Phone icon
    United StatesArizona
    Oct 22, 2024
  • Stylized image of a person
    P. P.
    Superintendent
    Phone icon
    Oct 18, 2024
  • Stylized image of a person
    S. R.
    Human Resources Business Partner
    Phone icon
    Oct 17, 2024

Frequently Asked Questions

What is JMA known for?

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JMA was founded in 1987 operates in the Construction industry. The company's main headquarters is located in 464 Kenwood Court Suite b Santa Rosa, California 95407 United States; you can contact the main corporate office by phone at . Explore JMA's company overview page for more information.

What is JMA's most common email format?

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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?

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JMA has approximately 31 employees as of February 2026. These team members are located across 1 continents, including North America.

Who are JMA's key employees and leadership?

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

  • Owner: J. A.
  • Owner: J. D.
  • Task Manager: C. J.
  • Arizona Manager: G. A.
  • Senior Consultant: L. S.

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