About Us

Alfred & Helen Nisbet arrive in San Antonio

Alfred Nisbet became one of the first two ophthalmologists in San Antonio — arriving within six months of the other — at a time when a local bank refused him a $100 car loan on the grounds the city “couldn’t support two eye doctors.” He would later join the group bidding to acquire that same bank. It was a preview of the contrarian instinct that would define three generations of Nisbet investments.

Helen Nisbet becomes Texas’ second female ranch broker

Having graduated Stanford University at 19, survived the Great Depression, and developed an investor’s eye for undervalued land, Helen Nisbet obtained her real estate broker’s license in the 1950s — becoming just the second woman to hold a ranch broker’s license in the state of Texas. She recognized that Texas land was among the most durable stores of wealth available to the families she worked with — a belief confirmed by every transaction that followed.

The Nisbet family purchased their first ranch near Sisterdale in Kendall County in 1952. That acquisition began a multi-decade pattern of strategic ranch investment: selling to buy better, reinvesting in both sides of San Antonio, and ultimately acquiring a ranch just south of Medina Lake.

Helen advises San Antonio’s most prominent land investors

Helen Nisbet spent years as the trusted ranch investment advisor to David Miller, one of San Antonio’s most respected land developers. When Miller retired, she continued in that capacity for Aaron Mandel. Her work was not transactional — it was strategic, evaluating land as a long-term capital allocation decision for clients who measured success in decades, not months.

David Nisbet builds a 40-year transaction record

Helen’s son David attended the University of Texas at Austin and joined her in the real estate business in the 1970s, quickly building his own portfolio of ranch investments alongside a client practice that would eventually span hundreds of millions of dollars in retail ranch sales. His clients included many of Texas’ most prominent business families. His instinct — like his mother’s — was for the equity side of transactions as much as the brokerage side, a perspective that still shapes how Nisbet Ranch Sales evaluates every property.

John Nisbet joins the firm as broker and attorney

David’s son John — Helen’s grandson — brought a credential set to the family firm that no predecessor had carried: a law degree from St. Mary’s University School of Law, a Texas real estate broker’s license, and eventually board certification in multiple real estate categories. He has operated at the intersection of law, brokerage, and title for over two decades.

Nisbet Ranch Sales, LLC celebrates 70 years

Specializing in buyer representation in Blanco County — the county and surrounds, the family has transacted in since 1952.