âWe probably left money on the table,â said Mr. Zweig, a retired digital printer. âBut we didnât have to list it, didnât have to do open houses, didnât have to stage it.â
There is a long history among Silicon Valleyâs elite of buying houses that are not for sale. Mark Zuckerberg, the billionaire chief executive of Facebook, found a place he liked near San Franciscoâs Mission District in 2012 and paid the owner at least twice what it was worth.
Credit Lisa Corson for The New York Times
People of much more modest means are now echoing his tactics, even if they cannot extend his lavish terms.
âTechnology is making people impatient,â said Steve Korn, a retired forklift facility manager who is now a real estate agent here. âNo one wants a six-month slog anymore to get a new place or move on from an old place.â
Technology is also fueling this boom in a more direct way. Tech companies, especially Facebook and Google, have plans to build new campuses and hire even more workers.
That means even places like Redwood City, a longtime also-ran to neighbors like Atherton, Menlo Park and Palo Alto, are now hot. Thatâs a windfall for longtime residents like the Zweigs, who moved to a coastal town 220 miles south and built a new house.
Prices in their old Redwood City development have continued to soar, prompting some wishful dreams among those who remain.
Michele and Mike Sweeney put a âmake me moveâ notice on their 2,060-square-foot house last year. That is a feature that the online real estate company Zillow offers to let owners solicit interest. Their demand was $ 1.9 million, significantly more than their house was worth.
âWe used to say around here, âIf it hits a million, weâre all selling,ââ said Ms. Sweeney, who works for a hospital. âThat was not too long ago.â
They were flooded with inquiries but did not make a deal. Now, according to Zillow, their house is rapidly approaching the price they wanted. âI asked my son, âDo you want to finish high school in Italy?ââ Ms. Sweeney said.
To entice people like the Sweeneys, who might sell under the right circumstances, some buyers and their agents are resorting to old-fashioned technologies: letters and phone calls.
âI live between an Apple person and a Google person. Real estate is really crazy around here,â said Jim Fenton, a tech consultant in Los Altos. âThis morning I was cold-called by an agent who said he had clients who wanted to move into my neighborhood, and did I want to sell?â Mr. Fenton said he had no intention of going anywhere.
Credit Gabrielle Lurie for The New York Times
Colleen Foraker, a Sothebyâs agent in Silicon Valley, prefers personal letters. âIt acknowledges the formality and the importance of the request to a perfect stranger,â she said.
Her clients might have a particular neighborhood in mind, and perhaps a certain layout or yard size. Ms. Foraker sends letters to about 100 owners, describing her clients and exactly what they want. âThey are looking for a spacious, newer, move-in-ready home that will accommodate energetic children, sports activities, hobbies and two large family dogs,â one letter said.
âIn some parts of the country, you move into a house until your children are gone or you retire,â Ms. Foraker said. âPeople here look at their homes more as an investment. They think, âIf the right number comes along, I would think about what I would do next.ââ
Even in Silicon Valley, letter campaigns are still the exception rather than the rule. Ms. Foraker has done about eight in the last few years. Two succeeded. The more recent deal involved a $ 3 million house.
âThe odds are low, but this is not a community that likes to wait,â said Michael Dreyfus, the owner of the Sothebyâs office in Palo Alto.
At least one real estate company thinks letters have an application far beyond Silicon Valley.
âWe decided low inventory is also a permanent condition in Denver, San Francisco, Austin, Boston, Seattle,â said Glenn Kelman, chief executive of Redfin, an online real estate company based in Seattle. With more wealth in those areas causing an influx of people, along with low interest rates, âthereâs no place for them all to live,â he said.
To shake inventory loose for its clients, Redfin will start this month to use letters to reach out to potential sellers in Denver. Local agents will work with buyers to craft targeted queries, just as Ms. Foraker does in Silicon Valley.
Mr. Kelman, who says the goal is to approach 10,000 potential sellers, is frank about this being an experiment. Perhaps, as often happens during booms, the sellers might get an inflated sense of their propertyâs worth.
One Denver buyerâs recent experience illustrated both the promise and the peril of these new solicitations. Charles Bogenberger, a software marketing manager, wanted to buy a condominium in the complex next to his office. His Redfin agent sent letters to the five people who owned units with four bedrooms, which was the floor plan Mr. Bogenberger wanted.
Two responded. One said he would sell for $ 560,000 â far more than Mr. Bogenberger could pay. The other unit had been on the market but was now going to be rented. Those owners wanted $ 400,000. The deal will close this month.
âWithout the letters, I might still be a renter,â Mr. Bogenberger said. And if the sellers, like their neighbors, had demanded too much? âI might still be a renter.â