The Real Cost of Owning Property in Dennis, Massachusetts
Dennis is really a town of five villages with two distinct price tiers hiding under one name - the Cape Cod Bay-side and inland villages of Dennis, East Dennis, and South Dennis on one hand, and the Nantucket Sound-facing, motel-and-cottage-dense Dennis Port and West Dennis on the other - and the real cost of owning here depends heavily on which side of that line a property sits. This page lays out what current research can actually document: an FY2026 tax rate that's among the lowest on Cape Cod, the absence of a residential exemption after a 2025 proposal stalled, Zillow's own confirmed home-value estimates for Dennis overall and for Dennis Port specifically, village-level transaction data that shows a real and sizable price gap, an honest debunking of a headline East Dennis statistic that isn't what it looks like, and the town's own confirmed short-term rental tax stack. It's also honest about what a full ownership-cost breakdown would need but that this round of research couldn't confirm at Dennis-specific granularity - utilities, insurance specifics, HOA costs, and West Dennis/South Dennis-specific home values among them - rather than filling those gaps with invented figures.
Property Tax: One of Cape Cod’s Lowest Rates, and No Residential Exemption
Dennis's FY2026 property tax rate is $4.29 per $1,000 of assessed value, down slightly from FY2025's $4.33. Per Cape Cod Bliss's compilation of town rates, that ties Dennis with Chatham ($3.67) as one of the two lowest tax rates in Barnstable County - a genuine, real cost advantage over Cape towns with rates twice as high. Every source reviewed lists a single figure for Dennis rather than a separate residential/commercial split, consistent with a confirmed FY2023 uniform rate of $4.67 per $1,000. That makes it very likely Dennis is still using a uniform, non-split rate structure for FY2026, though the town's own FY2026 classification-hearing document wasn't directly available this session - treat that as a high-confidence inference from consistent secondary sources rather than a direct primary confirmation.
The more consequential detail is what Dennis doesn't have: a residential exemption. The town's own Property Tax Exemptions page lists only senior (65+/70+), veteran, blind, and surviving-spouse programs, plus a tax-deferral option - no residential exemption appears in any FY2026 tax-rate roundup for Dennis, unlike Barnstable, Mashpee, Provincetown, Truro, and Wellfleet, all of which have adopted one. A "Residential Exemption Overview" was presented to the Dennis Select Board in September 2025, but it does not appear to have proceeded to adoption. That should be read as "considered, not adopted" rather than a permanently closed question - the town could revisit it in a future budget cycle - but as of FY2026, an owner-occupied primary residence in Dennis gets no exemption-based discount the way it would in several neighboring towns.
Home Values: A Real Village-Level Gap, and One Number to Ignore
Zillow's typical home value (ZHVI) figures for Dennis, both directly confirmed as of June 30, 2026, show real separation within the town: Dennis overall sits at $685,768 (up 2.5% year-over-year), while Dennis Port specifically sits at $565,009 (up 3.6% year-over-year). Village-level transaction data adds more texture, though it's directional rather than a single clean figure - RealtyTrac zip-code data puts the Dennis village/South Dennis area (zip 02638) trading roughly $871,000 to $958,000, down about 13% year-over-year from a June 2025 peak near $1 million, while Dennis Port (zip 02639) is up roughly 9% year-over-year. Together, these figures point to a real, roughly $300,000-plus gap between the Cape Cod Bay-side and inland villages and the Nantucket Sound-facing Dennis Port - likely reflecting Dennis Port's older motel-and-cottage housing stock against the more upscale character of the northern villages.
One figure that circulates for East Dennis deserves an explicit debunking rather than a repeat: a headline "123.5% year-over-year, $1.71 million median" statistic. Redfin's own East Dennis page shows why that number is misleading - only 2 homes sold in the latest period being measured, versus 11 the year before, with days-on-market rising from 6 to 21. A percentage change built on 2 sales isn't a market trend; it's a small-sample statistical artifact, and this page states that plainly rather than presenting it as real appreciation. Separately, Zillow- and Redfin-specific home-value figures for West Dennis and South Dennis individually could not be retrieved this session due to persistent fetch failures - an honest gap. Anyone evaluating a property in either of those two villages should check current listings and a recent MLS pull directly rather than assuming they track the Dennis-village or Dennis-Port figures above.
Renting It Out: Chapter 113 Registration and a Confirmed 14.45% Tax Stack
If a Dennis property is going to be rented, the town's Code of Ordinances, Chapter 113 ("Housing Space and Use"), requires all rental units - including short-term rentals - to register with the Dennis Health Department. A certificate of registration must be conspicuously posted specifying maximum occupancy, smoke-detector compliance must be certified annually, owners must keep occupant and date records, and an annual registration fee is set by the Select Board. Violations are tiered - $50 for a first offense, $100 for a second, $200 for a third or later - with each day treated as a separate offense. STR operators must also register at the state level through MassTaxConnect with the Massachusetts Department of Revenue.
On the tax side, Dennis's own Short-Term Rental Fact Sheet gives a confirmed combined rate of 14.45%: the state excise at 5.7%, a local-option tax of 2%, a community impact fee of 3%, and the Cape Cod & Islands Water Protection Fund excise at 2.75%. That's a primary-source confirmation directly from the town, stronger sourcing than most short-term rental tax figures available for other Cape towns. Dennis Port carries additional, village-specific requirements reported one step removed from a direct town fee schedule - a Rental Registration Certificate plus a mandatory pre-operation Safety Inspection Certificate, a registration fee reported at $250 in 2024 rising to $500 effective January 1, 2025, a minimum $1 million liability insurance requirement, and an occupancy formula of two people per bedroom plus two. Those Dennis Port fee figures carry a "reported" hedge here because they weren't independently re-confirmed against a current town fee schedule this session.
What This Page Can't Tell You
A genuinely complete "real cost of ownership" figure would also need utility costs, homeowners' and flood insurance premiums for a specific address, and any applicable condo or association fees - none of which turned up at Dennis-specific granularity in the research behind this page, and none of which are estimated here. Nor could this round of research retrieve Zillow- or Redfin-specific home-value figures for West Dennis or South Dennis individually, or confirm any Dennis-specific hurricane damage account for 1938, Carol (1954), or Bob (1991) - these gaps are stated plainly rather than filled with a neighboring town's numbers or an assumed figure. What is documented and reflected above is the FY2026 tax rate, the confirmed absence of a residential exemption (and the unresolved status of the September 2025 proposal), Zillow's directly confirmed ZHVI for Dennis overall and Dennis Port specifically, village-level transaction data showing a real price gap, an honest correction of the East Dennis small-sample statistic, and the town's own confirmed 14.45% short-term rental tax stack.
For a specific property's assessed value and current tax bill, contact the Dennis Assessor's office directly. For the current rental-registration process, Chapter 113's requirements, and Dennis Port's specific inspection and fee schedule, contact the Dennis Health Department. For an up-to-date, MLS-sourced sale-price comparison rather than the ZHVI or zip-level figures cited here - especially for West Dennis or South Dennis, where this page couldn't retrieve current figures - talk to a local real estate agent working the specific village in question. And for an actual insurance premium, flood-zone determination, or utility-cost estimate for a specific address, a licensed insurance agent and the relevant utility provider are the only sources that can give a number worth budgeting around. Nothing on this page is legal, tax, insurance, or financial advice.
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Get a Free Agent Referral →Independent research. No ads. No sponsored listings. Data sourced from: Cape Cod Bliss's tax-rate compilation (Dennis's FY2026 rate of $4.29 per $1,000 assessed value, down from FY2025's $4.33, and tied with Chatham's $3.67 as the two lowest rates in Barnstable County), plus a confirmed FY2023 uniform rate of $4.67 supporting the inference that Dennis remains a single, non-split rate town for FY2026. The Town of Dennis's own Property Tax Exemptions page (no residential exemption listed for FY2026) and a September 2025 "Residential Exemption Overview" presented to the Select Board without confirmed adoption. Zillow's directly confirmed typical home values as of June 30, 2026 (Dennis overall $685,768, +2.5% YoY; Dennis Port $565,009, +3.6% YoY). RealtyTrac zip-level transaction data (Dennis village/South Dennis, zip 02638, roughly $871K-$958K, down about 13% YoY from a June 2025 peak near $1M; Dennis Port, zip 02639, up roughly 9% YoY). Redfin's own East Dennis village page, used to debunk a circulating "123.5% YoY, $1.71M median" figure as a small-sample artifact (2 sales versus 11 the prior year, days-on-market rising from 6 to 21). The Dennis Code of Ordinances, Chapter 113 ("Housing Space and Use"), covering rental registration, posted occupancy certificates, smoke-detector certification, and tiered violation fines. The Town of Dennis's own Short-Term Rental Fact Sheet (town.dennis.ma.us/594), confirming a combined 14.45% STR tax stack (state excise 5.7%, local option 2%, community impact fee 3%, Cape Cod & Islands Water Protection Fund excise 2.75%). Dennis Port-specific rental fee and inspection details reported via a third-party STR-compliance aggregator (strprofitmap.com), one step removed from direct town confirmation. This page could not retrieve Zillow- or Redfin-specific home-value figures for West Dennis or South Dennis individually, confirm any Dennis-specific hurricane damage account for 1938, Carol, or Bob, or obtain Dennis-specific utility, insurance, or HOA cost figures, and none of those gaps are filled in with invented numbers here. Figures change; confirm all current numbers directly with the Town of Dennis Assessor's office, the Dennis Health Department, or a licensed insurance agent before making any financial decision. Nothing on this page is legal, tax, insurance, or financial advice.