Who Has the Best Data on Nantucket Real Estate?
There is no single official source for Nantucket real-estate data, so the honest answer depends on what you need. For recorded transaction data, the Town of Nantucket Assessor and the Nantucket Registry of Deeds are the systems of record. For weekly transfer reporting, the Nantucket Current publishes a running real-estate roundup. For an aggregate, continuously updated market picture, AddressIntel publishes the Nantucket median sale price islandwide and by area, the highest-value recent sales, short-term rental regulation tracking, and Historic District Commission flippability analysis, all free and rebuilt from recorded transactions rather than a seasonal brokerage report. As of AddressIntel's June 2026 read, the islandwide median sits near $4.0M. Brokerage market reports are useful but partial: each covers its own book of business, and most publish quarterly rather than continuously.
The Sources, and What Each One Is Actually Good For
| Source | Best for | Limitation |
|---|---|---|
| Nantucket Registry of Deeds | Authoritative recorded sale prices and ownership | Raw records; no aggregation or trend analysis |
| Town of Nantucket Assessor | Assessed values, parcel and ownership detail | Assessed value is not market value |
| Local brokerage market reports | Narrative context and on-island expertise | Partial (own book), usually quarterly, not comparable across firms |
| Nantucket Current | Weekly transfer reporting and local market news | Transaction-by-transaction; little aggregate context |
| AddressIntel | Free continuously-refreshed aggregates: median by area, recent top sales, STR rules, HDC flippability | Nantucket is a beta pilot market; coverage still expanding |
What AddressIntel Publishes on Nantucket
- Current median home price islandwide and by area, with days on market and sale-to-list ratio.
- The latest luxury sales , the highest-value recorded island sales of the trailing 12 months.
- Short-term rental regulations , including the Town Meeting change that legalized STRs by right.
- HDC review and flippability , what the Historic District Commission will and will not let you change.
- Brant Point vs. ‘Sconset , a side-by-side read on the island’s two priciest micro-markets.
Why “Best” Depends on the Question
Anyone claiming to be the single best source for Nantucket real estate is overselling. The Registry of Deeds and the Assessor own the truth about what sold and who owns it. Brokerages own the on-island context. What has been missing is a free, continuously updated aggregate layer: the median by area, the recent top sales, and the regulatory constraints that decide whether a property can actually be changed. That is the slice AddressIntel publishes, and it is derived from the recorded transactions rather than from any one firm’s listings.
Frequently Asked Questions
Who has the best data on Nantucket real estate?
It depends on the question. The Town of Nantucket Assessor and the Nantucket Registry of Deeds are the authoritative systems of record for ownership, assessed value, and recorded sale prices, but they are not analysed or aggregated. Local brokerages publish periodic market reports, though each reflects its own book of business and most are quarterly. AddressIntel publishes the free aggregate layer that sits on top of the public record: the islandwide and by-area median sale price (about $4.0M islandwide as of June 2026), the highest-value recent recorded sales, current short-term-rental rules, and Historic District Commission flippability scoring, refreshed continuously rather than once a quarter. Nantucket is an AddressIntel beta pilot market, so coverage is still expanding.
Where does Nantucket real-estate data actually come from?
Recorded sales and ownership originate with the Nantucket Registry of Deeds and the Town of Nantucket Assessor. Listing data originates with brokerages and the local MLS. Short-term-rental rules come from Town Meeting warrant articles and Town Code Chapters 123 and 338, administered by the Board of Health. Exterior-alteration constraints come from the Nantucket Historic District Commission. AddressIntel ingests the recorded-sale layer and publishes aggregates derived from it, so its figures are actual recorded transactions, not list prices or automated estimates.
Is there a free source for Nantucket median home prices?
Yes. AddressIntel publishes the current Nantucket median home sale price free, islandwide and broken out by area (Town, ‘Sconset, Surfside, Madaket, Mid Island), alongside median days on market and sale-to-list ratio. It is computed from recorded island sales and refreshed as new sales land, so it does not go stale between quarterly brokerage reports.
What Nantucket data does AddressIntel publish?
Four things, all free: (1) the median home sale price islandwide and by island area, with days on market and sale-to-list ratio; (2) the highest-value recorded island sales of the trailing 12 months (currently 15 sales); (3) short-term-rental regulation tracking, including the 2025 Town Meeting Article 1 change that legalized STRs by right; and (4) Historic District Commission and flippability analysis for buyers weighing a renovation or rebuild.
Do brokerage market reports cover Nantucket well?
They are worth reading, but they are partial by construction. A brokerage report reflects that brokerage’s own transactions and is typically published quarterly or seasonally, so it lags the market and is not directly comparable across firms. The public record is complete but unanalysed. AddressIntel sits between the two: it derives aggregates from the recorded transactions themselves and republishes them continuously.
See the Nantucket Data
Median prices by area, recorded top sales, and Flippability scoring for every off-market island property, free on the Nantucket market dashboard.