Sandwich Vacation Rental Investment: The New 2025 Bylaw, the Excise Stack, and Data That Doesn't Agree

The New Local Bylaw: Sandwich Closed Its STR Regulatory Gap in November 2025

As recently as a December 2022 Zoning Board of Appeals meeting, Sandwich had no local short-term rental bylaw on the books - a real regulatory gap, not a case of loose enforcement of an existing rule. Residents near Sandy Neck Beach were on record complaining that homes being used as short-term rentals were operating "like a hotel," with no zoning tool available to address it. That gap is now closed: Sandwich voters adopted a short-term rental zoning bylaw on November 17, 2025, by a decisive 128-28 vote at a Special Town Meeting. A related, separate amendment that would have removed a smoke-detector code-compliance requirement was considered at the same meeting and failed - worth noting because it shows the smoke-detector compliance piece stayed in place even as the broader zoning bylaw passed.

Sandwich also now has a separate short-term rental registration and tax program at the town level, layered on top of the new zoning bylaw and the statewide requirements below. This is a genuinely recent change - anyone relying on older write-ups of Sandwich's STR rules (including some competitor content still describing an unresolved regulatory gap) is working from outdated information. The practical detail that matters most for an investment decision - exactly what the new bylaw restricts, how it's enforced, and how the registration/tax program is administered - should be confirmed directly with the Town of Sandwich rather than assumed from this summary.

The Statewide Massachusetts STR Law: Registration, Tax, and Insurance

Beneath Sandwich's new local bylaw sits the same statewide framework that applies across Massachusetts: Chapter 337 of the Acts of 2018, with most provisions effective July 1, 2019. Anyone operating a short-term rental in Sandwich must register for a certificate of registration through the Massachusetts Department of Revenue, feeding a statewide public registry that discloses only the street and municipality of a listed property, not the full address.

The law imposes a 5% state room occupancy excise tax on short-term rental transfers, with two exemptions worth knowing: rentals under $15 per day are exempt outright, and hosts renting a property for 14 days or fewer per year can file a declaration to avoid the tax entirely. On top of the state's 5%, municipalities may add a local option excise of up to 6%. Operators must also carry a minimum of $1,000,000 in liability insurance unless the hosting platform itself provides equivalent coverage - a standard homeowners policy typically excludes short-term rental activity.

Cape Cod's Extra Layer: The 2.75% Water Protection Fund Excise

Because Sandwich sits in Barnstable County, it's automatically subject to an additional 2.75% "Cape Cod and Islands Water Protection Fund" excise on top of the state's 5% and whatever local option excise the town applies - money earmarked for coastal water-quality and wastewater infrastructure across the Cape and Islands. This isn't something Sandwich opted into; it's baked into the statewide framework for every Cape Cod and Islands municipality.

Stack all three layers together - the state's 5%, a local option excise of up to 6%, and the Cape's 2.75% Water Protection Fund excise - and a Sandwich short-term rental's total excise exposure can reach roughly 13.75%. That's on top of whatever the new November 2025 zoning bylaw and the town's registration/tax program require. Anyone modeling cash flow on a Sandwich rental should build from the full stacked figure and confirm the town's currently-adopted local option rate directly, rather than assuming a single 5% or 5%-plus-local number covers it.

What the Data Shows for Sandwich - And Why Four Sources Don't Agree

Sandwich's short-term rental market data genuinely disagrees across sources, on both listing count and occupancy, and it's more honest to present that disagreement than to pick whichever number sounds best. AirROI (dated July 2025-June 2026) reports 284 active listings, a $456 average daily rate, 38.2% occupancy, $33,841 average annual revenue per listing, a 6.1-night average stay, a 48.9% Superhost rate, and 89.1% of listings as entire-home rentals. AirDNA, drawing on July 2026 data, gives a meaningfully different picture: 219 active listings, a $438 average daily rate, and 54% occupancy - roughly 16 points higher than AirROI's figure. Awning.com adds a third listing count, 225, without reporting ADR or occupancy at all.

Line these up and listing counts alone range from 219 to 284 - a spread of roughly 65 listings, or about 30% - and occupancy estimates found across these sources range from about 38% up toward the mid-60s depending on methodology and time window. Neither the true listing count nor the true occupancy rate can be pinned to one confident figure from this research. Anyone underwriting a Sandwich short-term rental should treat the AirROI figures as the most granular single data set available, while recognizing that AirDNA's meaningfully higher occupancy estimate and Awning.com's different listing count both suggest real uncertainty in the underlying numbers - not a rounding difference.

Real Estate Price Context for Underwriting a Purchase

Sandwich's purchase-price figures show real, dated appreciation worth stating plainly rather than flattening into one number. Movoto puts the median sale price at $850,000 (June 2026), and NeighborhoodScout's median home value sits at $838,011 (Q4 2025) - both landing in a consistent $830,000-$850,000 range. That's up meaningfully from the Cape Cod Commission's own April 2026 Housing Profile, which gives a median home sales price of $732,000 for 2024 - an older but authoritative government-sourced figure. The move from roughly $732,000 in 2024 to $830,000-$850,000 by late 2025/2026 is real appreciation, not a data artifact, and it changes the math on any short-term rental investment modeled against an older, lower purchase price.

Sandwich Rejected the State's Seasonal Community Designation - A Different Regulatory Environment Than Bourne

Worth flagging for anyone comparing Sandwich against other Cape towns as an STR investment target: Sandwich considered and rejected the Commonwealth's Seasonal Community designation, available under the 2024 Affordable Homes Act. Town Manager George "Bud" Dunham and staff recommended against adopting it, telling the Select Board "we would recommend that we not consider it at this point"; the Select Board agreed, and the measure did not appear on the May 4, 2026 Annual Town Meeting warrant. Dunham noted the town "can bring this back at any point," so the designation remains available for future reconsideration but isn't currently in effect.

That's a genuinely different regulatory posture than neighboring Bourne, which did receive its own Seasonal Community designation. The two towns sit side by side on the Upper Cape but are taking different paths on this particular state program - a real distinction worth weighing for anyone comparing STR investment conditions town-by-town rather than assuming a uniform Cape Cod regulatory environment.

Why Renters Come to Sandwich: Town Hall Square, the Glass Museum, and the Boardwalk

Rental appeal in Sandwich is tied to specific, tangible attractions rather than generic "Cape Cod" marketing. The Town Hall Square Historic District - listed on the National Register in 1975 and expanded to 220 acres in 2010 - anchors the historic town center around Sandwich Town Hall, the Dexter Grist Mill, and Shawme Pond. The Sandwich Glass Museum draws on the town's undisputed Boston and Sandwich Glass Company history (1825-1888), with rare Victorian-era glass and live glassblowing demonstrations. Heritage Museums & Gardens spans 100 acres with an automobile museum, a 1908 Looff Carousel, and rhododendron gardens that typically peak from Memorial Day weekend through mid-June. The Sandwich Boardwalk, 1,350 feet long and running from Scorton Creek to the Cape Cod Canal, is a genuine visitor draw in its own right, though its repeated storm-damage and rebuild history (most recently reopening in summer 2024 after winter 2021-2022 storm damage) is a real consideration alongside rental appeal, not just a footnote.

Before You Buy: Confirm Everything Directly

Everything above describes the regulatory framework and data picture as researched for this page - it is not a substitute for direct confirmation before a purchase decision. Short-term rental registration requirements, zoning rules, tax rates, and insurance requirements can all change, and Sandwich's own bylaw is brand new as of November 2025. Confirm current rules directly with the Massachusetts Department of Revenue, the Town of Sandwich - including the specifics of its new 2025 STR bylaw and registration/tax program - and a licensed insurance agent before purchasing a property as a short-term rental investment. Nothing on this page is financial or legal advice.