For years, the giveaway that a historic renovation was underway in Sag Harbor Village wasn't a permit posted at the curb. It was the dumpster. Original windows, paneled doors, wide-board trim, all of it piled at the street before anyone from the Village had a chance to ask whether it needed to stay. By the time an inspector saw the paperwork, the material was already gone, and a house that had stood since the whaling era looked, from the inside, like nothing in particular.

That practice is why the Village Board of Trustees adopted Local Law 13 of 2025 on December 9, closing what had functioned as an open loophole in the review process. If you're evaluating a historic Sag Harbor property with renovation plans, the paperwork requirement itself matters less than what it signals: the Village has decided that owners no longer get to strip a house first and explain later. And buried in the same legislation is a detail that should reshape how you do due diligence before you write an offer, because the Village's own numbers can't agree on which houses this even applies to.

What Actually Changed

Before this law, an owner planning to renovate a contributing structure in the Sag Harbor Village Historic District still needed a Certificate of Appropriateness from the Board of Historic Preservation and Architectural Review, the same requirement that has existed for decades. What the new law adds is a mandatory construction protocol and preservation plan, filed before the Board will even consider the application. The plan has to spell out, in the law's language, how the proposed work identifies, retains, and preserves historic materials and features, and how it complies with the Secretary of the Interior's standards for treating historic properties.

Trustee Jeanne Kane, who sponsored the measure, put the intent plainly when the Board voted: owners "cannot jump to replace, but they must look to preserve first." That's a real shift in sequence. Under the old process, a contractor could open up walls, decide what looked salvageable, and let the Board react to whatever remained. Now the retention plan comes first, on paper, before demolition begins.

Not everyone on the Village's side of the table thinks the law will work as cleanly as intended. Architect Anthony Vermandois, whose practice focuses on historic renovation, was the only person to speak at the public hearing before the vote, and he raised a fair point: some of the structures on the district's contributing list were already heavily altered decades before this rule existed, and preservation plans can only protect what's actually still there. His question to the Board, essentially, was what exactly gets saved when a "historic" building has little historic fabric left to save. It's a useful caution for buyers too. A construction protocol requirement doesn't tell you what's inside a specific house. It tells you what you'll have to document once you're inside.

The Number That Doesn't Add Up

Here's the detail that should change how you approach due diligence. The 2025 law states, in its own legislative intent section, that the historic district has approximately 698 contributing structures. But the Village's own zoning code, in the section defining what counts as a "contributing building," points to the 1994 National Register documentation, which lists 870 contributing buildings, sites, and structures plus 15 landmarks. That's not a rounding difference. It's close to two hundred structures.

Neither figure is wrong exactly. They're drawn from different points in a district that was created in 1973 and expanded in 1994, and the record of which individual parcels have since been altered, demolished, or reclassified isn't something the Building Department maintains as a running tally. What that means in practice is that the Village itself doesn't have a single, current, address-level answer to "is this specific house on the list." The number varies depending on which document you're reading.

For a buyer, that's the actual friction. You can't rely on a general figure, a real estate listing, or even the age of a house to tell you whether it's a contributing structure subject to the new construction protocol. The only way to know before you close is to have the specific parcel checked against the current National Register documentation and the Village's contributing structures list, ideally before your renovation contingency period runs out, not after.

Interior Work Still Has a Path

One piece of this is more favorable to buyers than the headlines about the new law suggest. Under the Village's zoning code, where a building permit application involves only interior renovations, referral to the Board of Historic Preservation and Architectural Review isn't required at all, and Board approval isn't required either. If your plans for a Sag Harbor historic home are entirely inside the walls, new kitchen, reconfigured bedrooms, updated systems, you may never trigger the construction protocol requirement in the first place, because you never trigger Board review to begin with.

The complication is that most renovations buyers actually want in a 19th century Sag Harbor house aren't purely interior. New windows, an addition, a change to the roofline, a pool visible from an adjacent street, all of that is exterior or visible change, and all of it puts you back in front of the Board with a preservation plan in hand.

What the Timeline Actually Looks Like

The construction protocol requirement adds a document to prepare, but the review clock around it was already long before this law existed. Once a complete application is filed, the Board has up to 30 days just to decide whether a public hearing is warranted. If one is required, it has to be held within 60 days, and a final decision follows within another 60 days of the hearing closing or the application being deemed complete. Stack those windows and a single approval can stretch past five months before a permit is issued, let alone before construction starts.

Certain projects are guaranteed to hit that longer timeline. Demolition or removal of a landmark or contributing building requires a mandatory public hearing, and so does any building of 3,000 square feet or more, contributing structure or not. If your plans for a Sag Harbor property involve tearing down an existing structure to build larger, budget for the hearing process as a fixed cost of the project, not a possible one.

The stakes of that process aren't hypothetical. Developer Adam Potter's proposal for a large mixed-use building on Bridge Street has been tied up for years partly because four contributing structures, including houses on Rose Street dating to 1910, sit inside the footprint he wants to build on. Village code treats the removal of contributing buildings as a serious enough question that it goes to a public hearing where neighbors within 200 feet get formal notice and a sign has to go up on the property itself. Whatever you think about that particular project, it's a real illustration of what a buyer with redevelopment ambitions in the historic district is actually up against.

What This Means Before You Make an Offer

If you're looking at a historic or potentially historic property in Sag Harbor Village with renovation or redevelopment in mind, a few things are worth confirming before you're past your inspection contingency:

• Whether the specific parcel is currently listed as a contributing structure, checked against the Village's records rather than assumed from the house's age or appearance
• Whether your renovation plans are purely interior, which may avoid Board review entirely, or involve any exterior or visible change, which will not
• Whether the scope involves removing existing historic materials, which now requires a documented preservation plan before the Board will consider the application
• Whether the project's size or scope (3,000 square feet or more, or any demolition of a contributing structure) triggers a mandatory public hearing, and whether your timeline can absorb that

None of this makes a historic Sag Harbor property a bad purchase. It makes the ownership math different from a non-historic house in the same price range, and that difference is worth pricing into your offer and your renovation budget rather than discovering it after closing.

A Short FAQ

Does this new law apply to every old house in Sag Harbor, or just ones inside the historic district? It applies specifically to contributing structures within the Village's designated historic district, which covers the core of the village around the harbor. A house being old doesn't automatically mean it's a contributing structure, which is exactly why confirming status on the specific parcel matters.

If I only want to renovate the inside of a historic house, do I still need Board approval? Generally no. Village code exempts building permit applications that involve only interior renovations from referral to the Board of Historic Preservation and Architectural Review.

What happens if a preservation plan isn't filed and work starts anyway? The law was written specifically to prevent that sequence, arising from a pattern of owners removing historic materials before applying for review. Filing the construction protocol and preservation plan is now part of what makes an application complete.

Buying a historic property on the East End rewards patience and the right questions asked early, not after you're under contract. If you're weighing a Sag Harbor purchase with renovation in mind, or you're on the other side and preparing a historic home for sale, The Lori Schiaffino Team can walk through what a specific property's history actually means for your timeline and your plans. Work With Us.