Sullivan Commercial Realty is a full service San Antonio based, boutique brokerage firm specializing in the San Antonio and South/Central Texas market area.

Formed in 1996 with 100+ years combined experience in the commercial real estate market, our team is highly skilled in all aspects of commercial real estate brokerage – site selection, corporate services, office sales & leasing, commercial land acquisition & disposition including residential developments, master planned communities, institutional / corporate site selection, schools and industrial users.

Sullivan Commercial Realty currently manages and leases over 1,000,000 square feet of office, medical, retail and industrial space and represents several major land holdings within the San Antonio area.

Sullivan Commercial Realty takes pride in our ability to fulfill the most challenging requirements of our clients – the success of our clients is most important to us.  Our extensive experience enables our team to better manage and negotiate from an Owner’s perspective, with the goals of protecting and enhancing value.

Sullivan Commercial Realty’s local market presence, knowledge of our unique South Texas area, experience, expertise, marketing tools and personal attention offers our clients a distinct competitive advantage.

Sullivan Commercial Realty provides complete real estate solutions customized to meet our client’s specific needs:

  • Brokerage/Marketing Services
  • Client/Tenant Representation
  • Consulting
  • Property Management
  • Construction Management


James E. Sullivan, Jr., President | Broker
210 341 9292 ext 304

Pete Tassos, Broker | VP of Sales & Leasing | Partner
210 341 9292 ext 303

Zach Davis, Broker | Associate – Sales & Leasing
210 341 9292 ext 309

Karrie Dziuk, VP of Brokerage & Marketing, Operations Manager | Partner
210 341 9292 ext 301

Harold Shwiff, Director of Property Management | Partner
210 341 9292 ext 307

Britney Brantley, Property Manager
210 341 9292 ext 308

Patti Burroughs, Assistant Property Manager
210 341 9292 ext 302

Recent News

Sullivan NewsOak Hills Country Club Sales 10 Acres


Sullivan NewsCST Brands Moves Into New
Distribution Center Space


Allergy, Asthma & Immunology Assoc of South Tx
Alliance Residential Development
Bandera Dental Care
Brin & Brin PC
Comal ISD
CST Brands, Inc
Davis-McCrary Family Property Trust
Dentistry for Children
The Dermatology & Laser Center of San Antonio
Falcon International Bank
generations federal credit union
Meritage Homes
Oak Hills Country Club
Pediatric Digestive Care of San Antonio
Regent Care
Ricos Products Co, Inc.
Sage Western Companies
San Antonio Fire and Police Pension Fund
Schertz-Cibolo-Universal City ISD
VIA Metropolitan Transit
Vise Oaks I, Ltd.