How Do Off-Market and Private Sales Work on Nantucket?

Private and off-market transactions are a real, meaningful part of how Nantucket real estate trades, particularly at the upper end of the market where discretion often matters most to a seller.

That's not a marketing line. Buyers hear about it and assume it's mysterious. Sellers wonder whether it's actually a good idea for their own situation. Both questions have real, specific answers.

One quick note on language before diving in: I'm using "private" and "off-market" fairly interchangeably here to describe a property being marketed selectively rather than through a full public campaign. The exact brokerage or MLS classification can vary, and isn't the focus of this piece.

Access Over Advertising

• Private and off-market transactions are a meaningful part of the Nantucket market, particularly where discretion matters to a seller.
• Sellers choose this route for real reasons: privacy, discretion, and testing a price privately before committing to a public campaign.
• Buyers access this market almost entirely through broker relationships, not through any public tool or database.
• Once terms are agreed, an off-market sale generally follows the same purchase and closing process as any other. What's different is everything that happens before that point.

Why a Seller Chooses to Go Off-Market

Privacy is usually the biggest factor. A public listing means public photos, a public price, and a public record of how long the home sat before it sold. For some owners, particularly well-known ones or those simply protective of their business, that visibility is worth avoiding entirely.

There's also a quieter, more practical reason: testing the water. A seller who isn't certain they want to sell, or who wants to see what a specific price might attract before committing publicly, can float a property privately to a small group of qualified buyers first. If nothing materializes, there's no public record of the attempt, and no perception that the home "didn't sell" the traditional way.

Choosing a private sale does involve a real trade-off, and I'd rather be honest about that than pretend otherwise. Sometimes the goal is to maximize exposure. Sometimes it's to protect a family's privacy. My responsibility is knowing the difference, and helping a seller figure out which one actually matters most in their specific situation.

How These Connections Actually Form

There is no comprehensive public database of genuine off-market Nantucket inventory, and buyers sometimes assume there's a hidden list somewhere that isn't public. There isn't. That's exactly why a broker's network matters so much here. If there's no public listing, those relationships are how the property gets in front of the right buyers.

That network has to run in more than one direction to actually work. Some of those relationships are with sellers who've indicated they might consider a sale under the right circumstances. Others are with buyers who trust me enough to move on a property they've never seen publicly marketed. Relationships with other brokers matter just as much, not only here on Nantucket. A colleague's client thinking about selling before it's ever made public, or a colleague's buyer looking for exactly the kind of property you have, is often how these connections actually start, and increasingly, that colleague isn't always local.

A specific version of this comes up more than people might expect: a buyer already active in another luxury market, Aspen or Palm Beach or somewhere similar, who wants to add a Nantucket property to their portfolio without their existing market knowing they're diversifying. That kind of introduction depends entirely on cross-market broker relationships, which is exactly where Our Trusted Network (OTN), a group connecting leading independent luxury brokers across different markets, becomes genuinely valuable. I'm currently the only Maury People Sotheby's broker on Nantucket who's a member.

A property can be shown to a handful of pre-qualified buyers over weeks or months before it's ever listed, if it's listed at all. Some of the most significant sales I've been part of never touched a public search.

This is why broker relationships matter more here than almost anywhere else in real estate. Access usually comes through someone with the right relationships, across buyers, sellers, and other brokers, near and far, rather than anything you can search for yourself.

Why Trust Matters as Much as the Network

A network of relationships is what makes any of this possible in the first place, the actual pathway connecting a seller considering a quiet sale to a buyer who'd otherwise never see the property. But the network alone doesn't explain why it actually works.

Trust is what holds it together, and it shows up differently depending on who's involved. A seller confiding they might sell is handing a broker information that could affect their privacy if it isn't handled carefully. For a buyer moving on a property they've never seen publicly marketed, trust stands in for the reassurance a public listing normally provides. And when another broker makes an introduction, on-island or across the country through a network like OTN, they're trusting that the deal gets handled the way they'd handle it themselves. Those relationships only have value if the people involved trust one another enough to make the introduction.

For a high-net-worth buyer specifically, that has a practical implication worth acting on: a broker's actual track record matters more here than almost anywhere else in the process. Plenty of brokers can claim access to off-market inventory. Fewer have actually delivered it successfully and discreetly, many times over, and that's the difference a buyer should really be looking for.

What This Actually Requires of a Buyer

Being ready matters more in this segment than in a typical listed transaction.

There's no multiple-offer deadline creating urgency the normal way, but there's also no guarantee a property will still be available if you take too long to decide. Proof of funds, a clear sense of what you're looking for, and a broker who can move quickly on your behalf all matter more here than in a standard search. Confidentiality is often expected too; a buyer who talks openly about a property still being privately shopped can undermine the very discretion the seller is relying on. For the broader luxury-buying process beyond this specific piece, How to Buy a Luxury Home covers the fuller picture.

The Legal Process Mostly Doesn't Change Once Terms Are Agreed

This is worth being clear about: an off-market sale isn't fundamentally a different kind of transaction legally. Once terms are agreed, it generally follows the same purchase and sale agreement, the same disclosures, and the same real due diligence any Nantucket purchase deserves. Our due-diligence checklist applies just as directly here as it would to a publicly listed property.

What's different is entirely what happens before that point: how the property was found, how it was marketed, and how a price was reached.

Pricing Without a Public Comparison

A publicly listed home gets priced against other public listings and recent public sales. An off-market property doesn't have that same visible benchmark, which puts more weight on both sides having someone who genuinely knows the market, not just the asking prices, the actual sale prices, the properties that never made it public in the first place.

This is where a broker's direct experience with prior private transactions matters most. Without that experience, it's much easier for either side to misread the price, and that risk only grows further up the price ladder. Above $20 million, where a property's combination of qualities is often genuinely singular, there may be no clean comparison to find at all, on or off market.

Is Off-Market Always the Better Choice?

Not necessarily, for either side. A property with broad appeal and no particular need for discretion can genuinely benefit from a full public campaign, more visibility, real competition, and often a stronger final price. Our guide to selling best practices covers when that traditional route makes more sense.

Off-market works best when privacy, discretion, or a specific, narrow buyer pool genuinely matter more than maximum exposure. It's a real option, not automatically the better one.