Underwrite Boca Grande DSCR Without Sanibel Neighbor Dollars

Jacob Mishalanie
Aug 19
12 min read

Updated: 3 days ago

Park Avenue looking south, Boca Grande village

This is not legal or financial advice, and this guide stays inside the published research figures for Boca Grande, Florida rather than guessing at numbers the underlying report doesn't support. The failure mode worth naming up front: lenders and buyers who blend Sanibel's rebuild-driven dollars into a Boca Grande DSCR note, or who file the wrong county tax desk because Lee and Charlotte parcels sit on the same barrier island under two different governments.

Boca Grande's published year runs about $70,857 across 39 listings, with an ADR of $816, occupancy of 34.8 percent, and RevPAR of $266, for the vintage running August 2025 through July 2026. Thirty-nine listings is a small sample; one operator's pricing decision can meaningfully swing the percentages, and this figure should never be swapped for a larger, unrelated third-party count.

Neighboring towns appear in this guide only as labeled context, never as substitutes for Boca Grande's own numbers. Sanibel and Placida each have their own published figures, and mixing either into a Boca Grande rent roll produces a Gulf-coast average that describes no actual property on this island. This is not legal advice.

Start the Note From Boca Grande's Own Year

Underwrite from the labeled figure: about $70,857 across 39 listings, ADR $816, occupancy 34.8 percent, RevPAR $266, for the August 2025 through July 2026 vintage. Say this plainly on the listing or in the underwriting note, in language a stranger to the file could use without translation. Every figure in this section traces directly to that same published dataset.

The published peak-three months are March, May, and February, with August as the sample's hole. Year-over-year movement runs plus 6.6 percent, and supply is up 8.3 percent over the same period. Both figures describe pacing and competition, not permission to project a stronger year than the sample actually shows.

Twelve of the 39 listings, 30.8 percent, set a minimum stay of thirty nights or more. That's the most common minimum setting in the sample, not evidence that August fills the way March does. Treat setting share and occupancy as two different measurements, because a model that quietly converts one into the other will overstate the soft months.

Keep Sanibel and Placida on Their Own Lines

Sanibel's companion figure runs about $37,216 with occupancy at 38.2 percent; Placida's runs about $31,913 with ADR $440 and occupancy 31.9 percent. Both are real, published numbers, and both belong on their own clearly labeled line, never folded into a Boca Grande average.

The specific risk with Sanibel is rebuild-driven revenue. A note that quietly blends post-storm rebuild dollars from a neighboring island into Boca Grande's baseline is describing a temporary condition on a different property as if it were this island's ordinary year. That's a documented failure pattern worth watching for specifically.

Hand any partner or underwriter the Boca Grande figure first, with Sanibel and Placida attached only as labeled footnotes. That ordering alone prevents most accidental averaging before it happens, because the labeled context never gets mistaken for the headline number.

File the Correct County Desk by Parcel Map

Boca Grande has no dedicated town short-term rental office; the village end of the island sits in unincorporated Lee County, while the north end toward Gasparilla and Placida sits in Charlotte County. Which desk applies depends entirely on where the parcel falls on the map, not on which end of the island feels more like "Boca Grande" to a buyer.

Lee County's tourist development tax runs 5 percent, with collections lines including (239) 533-2190 and (239) 533-5427 on the published research; confirm which line currently owns the collections process before relying on either number. Charlotte County's tourist development tax is also 5 percent, plus a $35 business tax receipt for north-island parcels, with a collections line at (941) 743-1350.

Filing with the wrong county desk is a financing and compliance problem at the same time, not a minor paperwork inconvenience. Confirm current requirements directly with the correct county office or a qualified professional; this is not legal advice, and nothing here should be treated as a final determination of which desk applies to a specific parcel.

Don't Let Fort Myers Beach Fees Travel Onto This Parcel

Fort Myers Beach's registration process and its reported $350 annual short-term rental fee are specific to that municipality and do not apply to Boca Grande parcels under this research. A note that pastes that fee structure onto a Boca Grande underwriting file has guessed a third desk the actual map doesn't support.

Both the Lee County village-end parcels and the Charlotte County north-island parcels already have their own tax paths, described above. There's no gap that a borrowed Fort Myers Beach fee schedule needs to fill; the gap only exists if the wrong desk gets assumed instead of confirmed.

When a comps sheet or an underwriting memo shows an unfamiliar fee attached to a Boca Grande property, trace it back to its source before including it. If it traces to a different municipality's registration process, it doesn't belong in this file at all.

Tarpon Season and the Lighthouse Are Visitor Color, Not a Rent Roll

Boca Grande's tarpon fishing season, the historic pass, and the island's lighthouse are genuine draws for visitors, and they're worth mentioning in guest-facing marketing. They are not, however, a second data source for underwriting, and a tournament week is not a substitute for the twelve-month occupancy figure the published sample actually reports.

May, the published sample's second-strongest peak month, does correlate loosely with tarpon season timing, but that correlation doesn't turn a specific tournament week into a defensible annual occupancy assumption. Keep scenic and seasonal color in the marketing copy, and keep the rent-roll math tied strictly to the twelve-month figures.

Any vacancy haircut applied to this model should name August specifically, since that's the hole the sample actually documents, rather than applying a generic weekly markdown the research doesn't source. Guessing a discount schedule not present in the published data reintroduces exactly the kind of unsupported number this guide is built to avoid.

Respect the Sample Size

With only 39 listings in the published sample, a single operator's pricing or calendar decision can move the percentages more than it would in a deeper metro market. That's not a flaw in the data; it's a property of small samples that any underwriter should weight into the model's confidence level.

Resist the temptation to substitute a larger, unrelated third-party listing count for this labeled sample just because a bigger number feels more authoritative. A different count measures a different universe of listings, and swapping it in silently changes what the DSCR figure is actually describing.

When presenting this file to a partner or a lending committee, lead with the sample size and the labeled figures in the same breath. A reader who understands the sample is small from the first sentence will interpret every percentage that follows more accurately than one who discovers it as a footnote.

A small sample doesn't mean the figures are unreliable; it means confidence intervals should be wider than they would be in a deeper market, and any single-month projection deserves more skepticism than a full twelve-month figure. Keep that distinction explicit in the memo rather than letting it get lost in translation.

Bring the Comps Sheet to Every Review

Every time this file gets reviewed, whether by a partner, a lending committee, or a second set of eyes at the buyer's own firm, bring the comps sheet with Boca Grande's figure clearly separated from Sanibel's and Placida's. A reviewer who sees the labeling upfront interprets every number that follows more accurately than one who has to untangle a blended paragraph first.

This habit matters more the further the file travels from the person who originally built it. A note that's perfectly clear to the buyer who wrote it can still read as ambiguous to a lender seeing it for the first time, if the labeling wasn't explicit on the page itself rather than just understood by the author.

Treat the comps sheet as a living document that gets checked at each stage of the transaction, not a one-time attachment assembled at the start and never revisited. If Sanibel's rebuild-driven dollars have crept back into a later draft, catching that before the file reaches underwriting saves a round of avoidable questions.

Train Every Partner on the Same Labeled-Line Habit

A single buyer who understands the Sanibel-versus-Boca-Grande distinction doesn't protect the file if a co-investor, a broker, or a lender's own analyst re-introduces the blend later in the process. The labeling habit needs to travel with the file to everyone who touches it, not just live in the original author's head.

When handing this file to a new partner, lead with the sample size and the labeling rule in the same breath the numbers are presented. A partner who understands from the first sentence that Boca Grande's 39-listing sample is small, and that Sanibel and Placida are separate markets entirely, will ask sharper, more useful questions about the rest of the model.

This is a communication discipline as much as a financial one. The numbers themselves don't prevent mash math; the habit of labeling them clearly, every time, at every stage, is what actually prevents it.

What Closing Diligence Should Confirm Before Funding

Before the model gets locked and funding proceeds, confirm the parcel's actual county, Lee or Charlotte, against the tax desk assumed in the underwriting note. A file built on the wrong desk's assumptions needs to be corrected before closing, not discovered as a surprise afterward.

Confirm that no unverified fee, borrowed from Fort Myers Beach or any other municipality, has quietly reappeared in a later draft of the file. Fees have a way of resurfacing in comps sheets that get copied and edited repeatedly across a long transaction timeline.

This is not legal or financial advice, and confirming these details with the correct county office or a qualified professional remains the buyer's responsibility. What this guide offers is the checklist of what to confirm, not a substitute for that direct confirmation.

Why the Lee-Charlotte Split Matters Beyond Taxes

The county line running through Boca Grande and Gasparilla isn't only a tax-collection detail; it can also affect which building department, which flood-zone administration process, and which short-term rental registration process, if any, ultimately applies to a given parcel. Treating the county split as purely a tax question undersells how far the distinction actually reaches.

A buyer who confirms the county early in due diligence, rather than assuming it based on the general Boca Grande address, avoids discovering a mismatch during permitting or insurance underwriting, both of which typically want the correct jurisdiction confirmed independently of whatever the marketing materials assumed.

This is one more reason the county confirmation belongs at the very start of the file, not as a footnote added after the DSCR math is already finished. Everything downstream, tax desk, permitting path, insurance underwriting, traces back to that one confirmed fact about where the parcel actually sits.

A parcel search or a plat map, pulled directly from the county's own records, resolves this question definitively in a way that a general address lookup or a real estate listing's stated county sometimes doesn't. Confirm it against the primary source, not a secondary summary that may not reflect a recent boundary or annexation change.

A Worked Example: The Rebuild-Dollar Blend

A buyer preparing a lending file pulls comps for "Boca Grande and nearby Gulf islands," and a well-meaning analyst averages Boca Grande's $70,857 figure with Sanibel's $37,216 to produce a rounder, more conservative-looking blended number for the memo, treating the two as close enough to combine.

The lender's underwriter, reading the file cold, has no way to know the blended figure includes a neighboring island still absorbing storm-rebuild dollars into its own occupancy pattern. The resulting DSCR calculation doesn't describe Boca Grande's actual, published $70,857 baseline at all; it describes an guessed hybrid that corresponds to no real property.

The fix: pull the blend apart, present Boca Grande's $70,857-on-39 figure on its own line, and attach Sanibel's $37,216 only as an explicitly labeled footnote with a one-sentence explanation of why it's included. The memo becomes less rounded and more defensible, which is the correct trade in an underwriting file.

What a Boca Grande DSCR Memo Can Genuinely Claim

A defensible memo can claim the labeled $70,857-on-39 figure, the March-May-February peak strength, the August hole, and the correct county desk determined by parcel map, Lee versus Charlotte. Each of those is a documented, sourced fact from the published research.

What the same memo cannot claim: Sanibel's rebuild-driven dollars, a Placida-blended average, a borrowed Fort Myers Beach fee schedule, or a tarpon tournament week presented as representative annual occupancy. Each of those substitutions has already been named above as a specific failure pattern to avoid.

When a file already keeps those lines clean, the work is finished; there's no need to add lighthouse imagery or extra optimism on top of an already-accurate model. Bring the comps sheet back for another pass only if a neighbor's rebuild dollars have quietly reappeared inside the Boca Grande note. A clean, labeled file is worth more to a serious lender than a rounder-sounding blended number ever will be.

Frequently Asked Questions

What year should Boca Grande DSCR math actually start from?

About $70,857 across 39 listings, with ADR $816, occupancy 34.8 percent, and RevPAR $266, for the August 2025 through July 2026 vintage. Peak-three months are March, May, and February; August is the sample's hole. This figure should never be replaced with Sanibel's or Placida's numbers, which describe different properties entirely.

How should Sanibel and Placida figures appear in a Boca Grande note?

On their own clearly labeled lines: Sanibel about $37,216 with 38.2 percent occupancy, Placida about $31,913 with ADR $440 and 31.9 percent occupancy. Never average either into a Boca Grande rent roll or a Gasparilla-area underwriting figure. Both are useful context and neither is a substitute number.

Which county tax desk applies to a Boca Grande parcel?

It depends on the map. Village-end unincorporated Lee County parcels use Lee's 5 percent tourist development tax, with collections lines at (239) 533-2190 and (239) 533-5427 on the published research. North-island Charlotte County parcels use Charlotte's 5 percent tax plus a $35 business tax receipt, at (941) 743-1350. Confirm the current process with the correct desk.

Is there a dedicated Boca Grande town short-term rental office?

No. There is no separate Boca Grande municipal short-term rental window in this research. The applicable desk follows the county the parcel sits in, Lee for the village end, Charlotte for the north end toward Gasparilla, rather than a single islandwide authority.

Can Fort Myers Beach's registration fee be applied to a Boca Grande property?

No. Fort Myers Beach's reported $350 annual fee and registration process are specific to that municipality and don't extend to Boca Grande parcels under this research. Applying them anyway invents a third desk the actual county map doesn't support, and it should be removed from any underwriting file where it appears.

Do the thirty-plus-night minimum settings mean August actually fills up?

No. Twelve of the 39 listings, 30.8 percent, set a thirty-plus-night minimum, which describes the most common minimum-stay setting in the sample, not proof that the August hole behaves like the March peak. Setting share and occupancy are two different measurements, and a model that conflates them will overstate soft-month performance.

How should a lender weight the small, 39-listing sample size?

Carefully. A sample this size means one operator's pricing move can shift the percentages more than it would in a deeper market, so this isn't a deep-metro dataset to lean on with high confidence. Never substitute a larger, unrelated third-party listing count for this labeled sample; it measures a different universe of properties entirely.

Are tarpon season or the lighthouse relevant to the DSCR model?

They're relevant to guest-facing marketing, not to the underwriting math. Tarpon season and the historic pass are visitor draws; May, the sample's second-strongest peak, loosely correlates with tarpon timing, but a tournament week is not a defensible stand-in for the published twelve-month occupancy figure.

What failure mode should a Boca Grande financing file specifically avoid?

Blending Sanibel's rebuild-driven dollars into Boca Grande's $70,857 figure, or filing with the wrong county tax desk by confusing Lee and Charlotte parcels. Both mistakes come from skipping the labeling step this guide walks through: fix the map and keep every neighbor figure on its own line before the model gets locked.

Is any of this legal or financial advice?

No. This guide describes published research figures and county tax-desk contacts as documented, but it is not legal or financial advice, and it does not guess at fees, enforcement outcomes, or lending terms the published research doesn't support. Confirm current requirements with the relevant county office or a qualified professional before relying on any of it.

Work with Crest & Cove Creative

Blend Sanibel's rebuild dollars into a Boca Grande file and the DSCR model is underwriting a storm recovery that isn't this property's baseline. Fix the map and label the years before the number gets locked.

We help Boca Grande buyers and hosts keep the island's published $70,857-on-39 figure separate from Sanibel and Placida context, and confirm the correct Lee-versus-Charlotte tax desk before the comps sheet goes to underwriting. Bring the parcel map and the numbers you're working from, and we'll help you sort what's this island's and what isn't.

Reach out at crestcove.co or (256) 998-7502.