Real estate license needs to be renewed every 2 years. Sales Agents and Brokers need to complete atleast 18 hours of Continuing Education to become eligible for renewal. David Matthew Callahan has successfully completed following courses as part of qualifying and continuing education.
| Course Name (course number) | Course Provider | Course End Date | Hours |
|---|
| Broker Responsibility Course (2019-2020) (35367) | Midwestern State University | 2020-07-12 | 6 |
| Legal Update II (2020-2021) (37797) | Midwestern State University | 2020-07-05 | 4 |
| Legal Update I (2020-2021) (37796) | Midwestern State University | 2020-07-05 | 4 |
| Real Estate Basics 2019-2021 (37546) | Midwestern State University | 2020-07-05 | 10 |
| Real Property Issues with Death and Divorce (35624) | J. C. Johnson | 2019-07-25 | 2 |
| Real Estate Overview (33417) | Midwestern State University | 2018-07-07 | 4 |
| Legal Update II (2018-2019) (33198) | Midwestern State University | 2018-07-07 | 4 |
| Legal Update I (2018-2019) (33197) | Midwestern State University | 2018-07-07 | 4 |
| Broker Responsibility Course (31450) | Midwestern State University | 2018-07-07 | 6 |
| Real Estate Appraisal: Market Analysis & Highest and Best Use (223) | Lone Star College Tomball | 2016-06-29 | 30 |
| Real Estate Appraisal: Res Site Valuation & Cost Approach (224) | Lone Star College Tomball | 2016-06-27 | 30 |
| PROPERTY MANAGEMENT I (811) | Lone Star College Tomball | 2016-06-25 | 30 |
| REAL ESTATE INVESTMENTS I (911) | Lone Star College Tomball | 2016-06-23 | 30 |
| Real Estate Appraisal: Res Sales Comparison & Income Approach (225) | Lone Star College Tomball | 2016-06-23 | 30 |
| REAL ESTATE MATH I (611) | Lone Star College Tomball | 2016-06-22 | 30 |
| Real Estate Marketing: Commercial (528) | Lone Star College Tomball | 2016-06-22 | 30 |
| Real Estate Appraisal: Real Estate Appraisal Fundamentals (226) | Lone Star College Tomball | 2016-05-11 | 30 |
| REAL ESTATE MARKETING I (511) | Lone Star College Tomball | 2016-05-10 | 30 |
| REAL ESTATE LAW I (311) | Lone Star College Tomball | 2016-05-10 | 30 |
| Law of Contracts (1251) | Lone Star College Tomball | 2016-05-10 | 30 |
| RES INSPECTION RE AGENTS (1021) | Lone Star College Tomball | 2016-05-10 | 30 |
| Principles of Real Estate II (122) | Lone Star College Tomball | 2016-05-05 | 30 |
| Law of Agency (1151) | Lone Star College Tomball | 2016-05-05 | 30 |
| Principles of Real Estate I (121) | Lone Star College Tomball | 2016-04-27 | 30 |
| REAL ESTATE BROKERAGE I (711) | Lone Star College Tomball | 2016-03-22 | 30 |
| Promulgated Contract Forms (351) | Lone Star College Tomball | 2016-03-20 | 30 |
| Real Estate Finance (451) | Lone Star College Tomball | 2016-03-10 | 30 |
| Show Your Value at the Closing Table (28066) | Greater Lewisville Association of Realtors | 2015-09-11 | 1 |
| TREC Legal Update & Ethics MCE (L&E) Includes both (26449) | Midwestern State University | 2015-01-13 | 3 |
| TREC Legal Update & Ethics MCE (L&E) Includes both (26449) | Midwestern State University | 2015-01-13 | 3 |
| MCE - REAL ESTATE ESSENTIALS (25699) | Midwestern State University | 2015-01-13 | 9 |
| ADD, EDIT AND RULES FOR LISTINGS (25755) | REALTOR Academy | 2014-02-24 | 2 |
| REAL ESTATE MARKETING I (511) | Midwestern State University | 2013-01-11 | 30 |
| APPRAISAL IV (214) | Midwestern State University | 2013-01-11 | 30 |
| ALL RELATED (EXCEPT R.E.) (6100) | SCHOOLS FROM WHICH RELATED CREDIT IS ACCEPTED | 2011-12-19 | 60 |
| REAL ESTATE BROKERAGE I (711) | Lone Star College Tomball | 2011-12-04 | 30 |
| LAW OF CONTRACTS (1200) | Lone Star College Tomball | 2011-11-10 | 30 |
| Principles of Real Estate II (112) | Lone Star College Tomball | 2011-11-03 | 30 |
| LAW OF AGENCY (1111) | Lone Star College Tomball | 2011-10-27 | 30 |
| PRINCIPLES OF REAL ESTATE I (111) | Lone Star College Tomball | 2011-10-20 | 30 |
| ALL RELATED (EXCEPT R.E.) (6100) | SCHOOLS FROM WHICH RELATED CREDIT IS ACCEPTED | 1999-12-15 | 90 |