Buying, selling, developing, or building — Tantum coordinates the brokers, the numbers, the contractors, and the Mexico legal work under one point of contact. You make one call instead of managing eight vendors.
Texas brokerage through Coldwell Banker D'Ann Harper, REALTORS®. Mexico transactions through Tantum SA de CV. First consultation is complimentary.
Take the one piece you need, or hand us the whole project.

Residential, commercial, ranch, and investment property across San Antonio and South Texas — licensed Texas agents, with the investment analysis most brokerages do not offer.
Buy or sell in Texas → Leticia Arauz Managing Director · (361) 243-0488
Vacation homes, investment properties, and retirement — bought and held securely. We handle the fideicomiso, the title work, and the closing coordination foreign owners need.
Explore Mexico → Pablo Escudero Mexico Broker · +52 55 1295 0899
Feasibility, pro formas, and 3D concept packages before you commit capital — then bid-leveling and site coordination once you do.
Start a project → Luis Frias Director of Operations · (210) 380-4870
Decision-ready numbers for investors and brokers — a new model, or an independent second opinion on the one you already have.
Run the numbers →
Construction materials brokered at volume pricing, with value-engineered alternatives where the specification allows.
Get pricing →
Renders, photography, video, and virtual tours that move developments and shorten lease-up for owners and property managers.
See the work →Mexican nationals can buy property in Texas with no restriction on nationality — nothing like the zona restringida at home. But six decisions made before you sign will shape your taxes, your financing, how the asset passes to your family, and what you keep when you sell.
Educational material only. Not tax, legal, or investment advice — we will connect you with the right licensed professional for your situation.

No forms, no queue. Bring us a property, a set of numbers, or a question — we will tell you what we would do, and whether you need us at all.
For Texas buy/sell transactions, real estate services and property listings are provided through Coldwell Banker D'Ann Harper, REALTORS®, by Texas-licensed real estate professionals. Tantum Companies provides consulting and coordination and is not a Texas real estate license holder.
Hired Tantum to bid out the projects to subcontractors and handle the renovation of our apartment complex. Usually, we have to deal with many problems as things are being fixed, but this time Tantum handled all issues — it was magical how hands-off it was for our team. We handed our CAPEX to Tantum, and they beat the budget while delivering on time.”
First time in the development world. Tantum explained the process for us, making it easy to go step by step. We have not yet developed the project, but now we have all the information for when we want to start, from construction costs, underwriting, and realistic renders, to a clear exit strategy. We’ll be contacting Tantum again when we decide to buy the property and begin the project.”
Tantum’s proforma team was hands-on, quick, efficient, and was submitted to the bank with no issues. Great value and fast turnaround time.”
After reviewing our legal documents, Tantum Legal provided a thorough assessment of our case and outlined clear next steps for dispute resolution.
Tantum Materials sourced flooring, countertops, and cabinets for the Potra Property at competitive prices without compromising quality. Everything arrived on time and in perfect condition
“Tantum Developers guided us through every step of our new construction project, from the feasibility study to the final schematic designs. Their project organization and coordination saved us time and money, and the final result exceeded our expectations.”
— Carlos M.
Acquired a new property and was recommended Tantum for rebranding, marketing materials, and a pitch deck presentation. Very impressed with how they understand all the numbers and are able to simplify that into a well-branded, impactful pitch deck.”
They structured our fideicomiso and handled all the legal documentation. The process was transparent and efficient.








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