Some of what changes hands in Tarrytown, Westlake, Pemberton Heights, and on Lake Austin never appears on Zillow as an active public listing. Buyers hear this and assume there's a secret list. Sellers hear it and assume they can skip the sign in the yard. Both are half right. This page explains the half that's true, the rules that changed in 2025, and how I work this part of the market for clients on both sides.
Office exclusive. The seller instructs the brokerage not to market the home publicly. No sign, no Zillow, no photos online. The listing is filed with the MLS but not released to other agents, so it lives inside one firm and is shown to buyers that firm's agents represent. Your agent can ring another agent directly about it, one conversation at a time. What they can't do is circulate it across brokerages, which counts as public marketing and puts the home on the MLS within one business day. For a seller at Kuper Sotheby's, that means visibility inside one of Austin's largest luxury brokerages.
Flex. Austin's version of delayed marketing, run by Unlock MLS since July 2025. The home goes into the MLS where agents can see it, with no days on market accruing and no price history building. There's no time limit beyond the listing's expiration date, so the window is as long as the seller wants it. Two things people get wrong: you can block showings during the Flex phase, and the listing can appear on Zillow, Redfin, Compass and Homes.com if you allow it, because those run virtual office websites. What it won't hit is IDX and syndication, which is most agent search sites and Realtor.com. So it isn't invisible. It's calibrated.
Private agent networks. These aren't an MLS category. Austin has private, agent-only platforms, Austin Luxury Network and Clubhouse among them, where agents exchange information about private and pre-market opportunities. Austin Luxury Network sets a residential floor of $1,500,000, which is one reason these networks are a luxury-market thing. Their use is governed by the listing broker's MLS and brokerage rules, so I think of them as another way I stay aware of inventory for buyers, not as a substitute for the two listing options above.
Truly private. A home that isn't for sale until somebody makes the right offer. No listing anywhere, no network, no MLS. These move on relationships, and they're the rarest of the four.
The Clear Cooperation Policy was adopted in 2019 and has been in force since 2020. It says that once a home is marketed to the public in any way, a sign, a social post, an email blast, it must be entered in the MLS within one business day. That rule still stands. In March 2025 the National Association of Realtors added the delayed marketing option described above, with local MLSs required to implement it by the end of September. Both the office exclusive route and the delayed marketing route require the seller to sign a disclosure confirming they understand what they're giving up: the exposure that public marketing brings, and the price that exposure often supports. A good agent walks you through that disclosure before you sign it, not after.
What none of this allows: marketing a home publicly while keeping it off the MLS entirely. If you're being offered something described as private, the question worth asking is what's been filed and with whom. Your agent should be able to answer that in one sentence.
Here is what "access to off-market homes" consists of, because the phrase gets used loosely.
First, the brokerage. Office exclusives at Kuper Sotheby's are visible to me and to the agents I work alongside on The Lewis Group, which means a buyer I represent sees homes a buyer at another firm doesn't.
Second, the networks. Austin Luxury Network and Clubhouse are agent-only platforms where private and pre-market opportunities get shared. I'm a participant in both, so I see that inventory.
Third, the phone. Agents in these neighborhoods talk to each other, and a listing agent with a Flex listing calls the buyer's agents she trusts before it goes fully public. That happens on the strength of past deals, not membership.
Fourth, the direct approach. If you want a specific street and nothing is available, I can write to owners on that street. It works less often than people hope and more often than people expect, and it only works if you are specific about what you want and serious about the number.
What I ask of buyers who want this: be ready. Off-market opportunities move fast and reward people who have their financing, their criteria, and their decision-making in order before the call comes.
For many sellers, the useful question isn't public versus private. It's sequence. Flex lets us start with controlled exposure inside the MLS, learn from that audience without accumulating public days on market or a price history, and then decide whether and when broader distribution makes sense.
Above a certain price point, the agents working at that level check the MLS and the private channels as a matter of routine. Fewer eyes, but the ones looking are the ones transacting. That's why a controlled launch is a real way to test a number: you find out how a qualified audience responds before the price is attached to your address in a way you can't take back.
The limit is reach. Not every buyer at your price point is working with an agent who is plugged into the private channels, and that's especially true of people moving here from abroad or relocating with a company. Those buyers arrive through the public market. So if a home sits with controlled exposure and doesn't move, the question is whether the number is wrong or whether the right person simply hasn't seen it, and you can't always tell which from inside.
Which is why the sequence usually beats the binary. Start with controlled exposure, test the price and the interest, and if it doesn't move, launch publicly where the reach is widest, with all the preparation already done. Some sellers never want the public phase, and that's a legitimate choice with a cost attached. Most are better served by using both in order.
How I run it: we decide together which route fits, you sign the disclosure with eyes open, and the home goes to the right agents before it goes anywhere else. What matters as much as the route is who ends up on the other side of the table. I closed a house in Tarrytown recently where the listing agent knew exactly what she was doing, and the whole thing was easier for it. No posturing, no manufactured drama in option period, no surprises at close. Both sides wanted the same outcome and got out of the way. That's not luck. It's what experience on both sides buys you.
If it sells during the controlled phase, it sells. If it doesn't within the window we set, it launches publicly with no surprises about what the timeline looks like.
This matters especially in neighborhoods with long ownership tenures and little turnover: Tarrytown, Pemberton Heights, Old Enfield, Westlake, and the Lake Austin waterfront. Where people stay for decades, public inventory in any given month is a handful of houses, and relationships and conversations around homes that aren't publicly listed matter more. I've lived in Pemberton Heights for 10 years. That's where I spend my time, and it's why I hear about things.
I won't use "off-market" to manufacture urgency about a home that's launching next week anyway. I won't market a home publicly and pretend it's private. And I won't promise you access I don't have, which is why I've told you what I'm on and what I'm not.
The private market runs on trust between agents. I'd rather lose a deal than spend that.
Usually an office exclusive: a home under a signed listing agreement that the seller has instructed the brokerage not to market publicly. It's filed with the MLS but not released to other agents, so it's visible only inside the listing brokerage.
Austin's delayed marketing option, live since July 2025. The home is in the MLS and visible to agents, but public distribution is controlled by the seller, no days on market accrue, and no price history builds. It can appear on some registered-user sites like Zillow if the seller allows it, but not on IDX or syndication sites like Realtor.com.
Yes. An office exclusive never appears there as an active listing. A Flex listing appears only if the seller allows it. A truly private sale never lists anywhere. The two MLS routes require the seller's signed consent to the exposure being given up.
Through an agent whose brokerage carries office exclusives, who has access to the agent-only networks, who gets the call when a Flex listing is about to go public, and who will write to owners on a specific street when nothing is for sale.
If you're looking for something specific in Central or West Austin and nothing on the portals is right, or you're thinking about selling and would rather not announce it, that's a conversation worth having early. Start here.
Rules current as of September 2026. Sources: NAR Multiple Listing Options for Sellers; NAR Clear Cooperation Policy (Handbook on Multiple Listing Policy, Section 17); Unlock MLS Flex and Flex FAQ; Austin Luxury Network participation terms. Last reviewed September 2026.