History & Team

When area banks and savings and loans failed in the mid to late 1980s, John Hart, who then operated an independent CPA firm, began helping his small business clients refinance their loans through the U. S. Small Business Administration guaranteed loan programs. By 1988, his efforts evolved into a small SBA loan consulting business which he named Source Funding.  After four years, Source Funding was doing so much SBA loan work that he sold his CPA practice and went full time into the SBA / USDA loan consulting industry where he has served for over 30 years.  In 2000, Mr. Hart was asked to assume the role of Executive Director of Greater Texas Capital Corp., a SBA 504 Certified Development Corporation.  GTCC quickly grew to become the most successful SBA 504 loan producer in the Dallas District of the SBA and one of the top producers annually in the 5-state SBA Region 6. Mr. Hart served Greater Texas Capital for over 20 years before he retired from the company in 2019.  Today, almost 30 years later, Mr. Hart has reopened SourceFunding, but expanded it to include loan-consulting,  grant writing, and fundraising services to small businesses and non-profits throughout East Texas. 

Mr. Hart’s financial expertise, reputation of success among lenders and industry leaders, and competent leadership have resulted in an estimated $1.4 billion in small business financing projects to date. 

SourceFunding can help your small business or non-profit organization find funding, acquire grants, and procure corporate and foundation donors. We also help lenders screen, qualify, package, and place their loans with the SBA and assist non-profit organizations with capital campaigns and major donor acquisition. 

Our success stories include many well-known East Texas businesses, including the Stewart Family Funeral Home, Traditions Restaurant,  Andy’s Frozen Custard and many others. As a man of strong faith, John Hart believes that God has prepared him through his CPA work to be an entrepreneurial lender and connect the vision and passion of small business owners and non-profit organizations with the resources they need to bring their dreams to life and serve their organizations well. 

If you would like to learn more about our loan consulting, grant writing, or fundraising services, contact us today to schedule a free consultation. 

Loan Professionals



For more than two decades, John Hart grew and provided leadership for Greater Texas Capital Corp. Under his direction, GTCC grew from a small local enterprise to one of the largest and most successful organizations in their industry in Texas. The company has been named the top producer of SBA 504 loans in the Dallas District of the SBA for seven of the last eight years and are annually one of the top producers in the 5-state SBA region and the nation. 

Before joining GTCC in 1999, John owned and operated Source Consulting Partners, dba SourceFunding, assisting banks and borrowers in screening, packaging, and placing government guaranteed loans. Prior to becoming involved in SBA lending, John worked as a CPA for several National and Regional CPA firms and also owned and operated his own CPA practice for 12 years, specializing in small business clients and non-profit organizations. John is a native of East Texas and earned his BBA in Accounting at Texas Tech University. 

John has extensive experience in both the for-profit and the non-profit sectors, serving for many years and in many capacities with organizations in Tyler, East Texas, and the DFW area. His commitment to his industry and his community is evidenced by his leadership and service to many civic and professional organizations and economic development groups locally, regionally, and nationally. 



Roane Logan is a former bank executive, with over 40 years of experience in North Texas and 25 years specializing in SBA lending. In 2016, Roane decided to become an independent consultant, providing clients with financial analysis, pre-qualification, and access to SBA lenders. Based on his financial analysis of the company and their lending needs, Roane is able to pair clients with banks that closely fit their needs and personalities. 

Roane graduated from SMU and later the Southwest Graduate School of Banking. After college he spent 6 years in the Marine Corps. For the past 10 years, Roane has been a director of the Greater East Texas Certified Development Company. 

Roane lives in Carrollton, TX and enjoys traveling and cycling.



Mary Brownmiller has over 40 years of SBA lending experience in several different positions. She spent ten years at SBA as a loan officer, 22 years as a credit and marketing manager for two different non-bank lenders, and 11 years working as a Loan Service Provider. In 2019, she started her own loan service provider, The Brownmiller Group, Inc. at www.Brownmillerlsp.com. 

During her career, she has trained over 50 marketing and credit employees, was an integral part of growing an SBA portfolio from $9MM to over $160MM (when the maximum loan size was $2MM and under), and procured one lender’s approval to make 504 first liens which resulted in over $70MM in production. Because of this combined experience, Mary is very capable of assisting lenders to start or expand their SBA programs and enjoys the challenge of doing so. 

Mary has a B.A. in Accounting from the University of Northern Iowa and passed the complete CPA exam at one sitting. While working at SBA, she received two awards: Technical Employee of the Year (GS-9-13) for SBA Region VII and Regional Employee of the Year for SBA Region VI. She spent a year on the Hickory Creek Economic Development Board and is a member of the Daughters of the American Revolution, for which she served as Regent (President) for two years of the Flower Mound chapter. 

Grant Professionals



With more than 40 years of experience in commercial lending, Stephen Horlander has built a reputation for providing his clients with reliable service. His commercial experience was gained while working as a credit analyst and as a commercial lender. His extensive experience in the non-profit sector includes serving as President of Downtown Development, Longview, TX, President of South Tyler Rotary club, and President of Society of St. Vincent de Paul and Catholic Charities of East Texas. 

Born in Longview, Texas, Stephen earned his BBA in Finance from Stephen F. Austin State University along with a postgraduate degree from Southwest Graduate School of Banking at Southern Methodist University. He is also a graduate of American Bankers Association Graduate School of Commercial Lending. 



Brit is a former electronics executive, currently serving on the Industry Advisory Board, UT Tyler EE Dept. and a mentor to startup organizations. A Fort Worth native, Brit chose to retire in Tyler after 40 years working in Silicon Valley on some of the newest technologies of the time. 

Brit’s extensive experience includes serving as a researcher in advanced radio techniques, product manager for a startup telecommunications company, general manager of a video recording company, and Vice President of the top vendor to IBM’s PC division. Brit’s most exciting role was serving as a business development manager for the international startup that developed GPS in cell phones. 

Brit holds engineering degrees from Rice and UC Berkeley and a business degree from Stanford. His experience in identifying unique strategies and writing winning proposals enhances the grant acquisition process. 




Before becoming a consultant with Source Funding, LLC, David accrued over 30 years of experience in philanthropic fundraising. While serving as a minister in local East Texas churches, he was involved in campaigns ranging from $650,000 to $1,400,000. His tenure at two East Texas higher education institutions allowed him to be involved in more significant capital campaigns ranging from $40,000,000 to $66,000,000. In each of the aforementioned major campaigns, he worked very closely with two gift prospects that agreed to share the largest single gift in history for each of the two instructions – one a seven figure gift and another an eight figure gift. David brings a wealth of experience in telemarketing campaigns, annual fund drives, year-end giving, special projects development, planned giving and capital campaign strategies/implementation. He works very well in developing mutual respect and long-lasting relationships with donors. 

David also has a 10 year service experience in retail business. He held several positions associated with an independent Christian bookstore in Longview, Texas. This store was honored as the Christian Book Seller Association’s Christian Bookstore of the Year for Region VIII (Texas, Oklahoma, Louisiana and New Mexico) in 1985 and 1987. 

He received a M.R.E. form Southwestern Baptist Theological Seminary in Ft. Worth, Texas, a B.A. from East Texas Baptist University in Marshall, Texas and an A.A. from Tyler Jr. College in Tyler, Texas. 

David is an active Rotarian involved in supporting his local community. He is a Past President of the Rotary Club of Tyler and currently is serving as President of the Rotary Club of Tyler Foundation.