A defensible South Florida short-term-rental forecast starts with legal available nights, not 365 days. For each month, multiply nights the property can legally and practically be offered by a supportable occupancy rate and an average booked rate. Then separate room revenue from cleaning charges, taxes, platform deductions, refunds, and operating expenses.
That result is gross room revenue—not owner cash flow. A useful acquisition model also includes launch time, blocked nights, minimum stays, booking gaps, platform and payment costs, management, cleaning, utilities, insurance, taxes, repairs, reserves, debt service, and a downside case.
If you are evaluating a South Florida vacation rental, request a Fines Group consultation to organize the legal screen, comparable set, revenue cases, costs, and backup exit before you commit capital.
01 / Legal availability
Confirm how many nights can legally be sold
Do not begin with 365 available nights. Begin with the exact address, proposed rental pattern, ownership structure, and building rules.
Florida's Department of Business and Professional Regulation explains when an entire dwelling offered for transient occupancy requires a state vacation-rental license and emphasizes that local requirements can still apply. Review the current Florida DBPR vacation-rental guide.
Local rules then diverge. Unincorporated Miami-Dade uses its own short-term-vacation- rental framework and Certificate of Use process; Fort Lauderdale administers a vacation-rental registration program; and Hollywood operates a city licensing program.
Document these inputs
- Whether the proposed rental frequency and stay length are permitted
- State, county, and city licensing or registration prerequisites
- Zoning, occupancy, parking, safety, noise, trash, and responsible-party rules
- Condominium or HOA lease minimums, caps, approvals, and restrictions
- Owner-use dates, maintenance blocks, inspections, repairs, and storm downtime
- The date and primary source used for every conclusion
If the legal or private-rule review limits the property to 210 rentable nights, a model built on 365 nights is not optimistic—it is the wrong model.
02 / Comparable evidence
Build a property-matched comparable set
Citywide averages are useful for market discovery, but they are not property-level evidence. A beachfront two-bedroom condo, an inland three-bedroom house with a pool, and a luxury waterfront home serve different guests and should not share one rate assumption.
Location
Match the submarket and distance to the guest's real demand driver.
Property
Match type, bedrooms, bathrooms, legal sleeping capacity, parking, pool, and access.
Positioning
Compare renovation quality, design, photography, reviews, and management quality.
Booking rules
Compare minimum stay, cancellation terms, pet policy, and the same month or season.
Keep a short explanation for every included comparable. Remove listings that are stale, obviously misclassified, or too different to support the subject property. Expand the search area only after preserving property similarity.
Use the South Florida short-term-rental market comparison to define the market thesis, then use the property-level method here to test whether the actual address supports it.
03 / Calendar evidence
Do not confuse blocked calendars with booked nights
An unavailable date can mean a paid reservation, owner use, maintenance, regulatory downtime, or a host blocking the calendar. Treating every unavailable night as occupied can materially overstate performance.
- Calculate legally available nights.
- Subtract owner and maintenance blocks to get operator-available nights.
- Identify booked nights supported by reliable evidence.
- Keep the remaining unbooked nights visible.
When historical statements are available, reconcile reservations, payouts, cancellations, refunds, taxes, and bank deposits. When they are not, label the forecast as market-derived rather than property-verified and widen the downside range.
04 / Seasonality
Forecast each month instead of using one annual average
South Florida demand is not flat. Weather, school calendars, holidays, events, cruise schedules, business travel, construction, and storm risk can change both rate and occupancy. A single annual ADR and occupancy percentage can hide weak months and exaggerate cash available for fixed expenses.
For each month, record
- Legal and practical available nights
- Expected booked nights and occupancy as a percentage of available nights
- Average booked nightly rate, discounts, and refunds
- Room revenue, cleaning, other guest charges, and taxes
- Platform and payment deductions
- Expected owner payout before property operating expenses
Model occupancy and rate together
High occupancy can be purchased with lower rates, while high rates can reduce booked nights. Avoid combining the highest observed occupancy with the highest observed ADR when those outcomes came from different listings or seasons.
If the deal works only when it matches the best listing's rate and the fullest listing's calendar at the same time, the base case is probably an upside case.
05 / Owner economics
Separate booking value from economic revenue
Guest-facing totals may include cleaning charges and taxes that do not belong to the owner economically. Cleaning fees should be matched against cleaning and laundry expense. Taxes collected for remittance should not be treated as revenue available to pay the mortgage.
Florida explains that transient accommodations can be subject to state sales tax, applicable discretionary surtax, and local-option transient-rental taxes, with the responsible collecting authority varying by county. Use the current Florida Department of Revenue transient-rental guidance, then confirm county, city, and platform responsibilities for the property.
- Show room revenue separately from cleaning and other guest charges.
- Show taxes collected separately from owner revenue.
- Deduct refunds, discounts, platform fees, and payment fees.
- Match cleaning collected with cleaning and laundry expense.
Include launch, review, and operating friction
A new listing may need time to furnish, license, photograph, publish, accumulate reviews, and learn its pricing. Model ramp-up, gaps created by minimum stays, cleaning capacity, repairs, slow response time, insurance requirements, storm downtime, and compliance delays. These assumptions change sellable nights and realized revenue.
06 / Downside
Run base, downside, and stress cases
The following numbers are illustrative only; they are not market benchmarks.
| Case | Available nights | Occupancy | ADR | Room revenue |
|---|---|---|---|---|
| Base | 320 | 68% | $245 | $53,312 |
| Downside | 300 | 55% | $215 | $35,475 |
| Stress | 285 | 45% | $195 | $25,009 |
Small assumption changes compound. Subtract recurring operating costs, reserves, management, financing, and taxes before evaluating cash flow and return. Then underwrite a legally permitted medium-term or long-term rental exit. A backup plan is useful only when current rents, rules, and the property's layout support it.
For the complete acquisition framework, see How to Analyze a Short-Term Rental in South Florida.
07 / Verification
Use this worksheet before relying on the forecast
- Confirm jurisdiction, zoning, private restrictions, and the proposed rental pattern.
- List licenses, registrations, taxes, inspections, renewals, and response duties.
- Calculate legal and practical available nights by month.
- Build and document the property-matched comparable set.
- Distinguish booked nights from blocked or unavailable nights.
- Pair supportable occupancy and ADR assumptions for each month.
- Separate room revenue, cleaning, taxes, fees, refunds, and owner payout.
- Include launch timing and operating downtime.
- Run base, downside, stress, and backup-exit cases.
- Date every source and refresh the model before making an offer.
- Have licensed professionals verify legal, tax, insurance, financing, and brokerage matters.
08 / Questions
Frequently asked questions
What is the basic formula for short-term-rental revenue?
For each month, multiply legal and practical available nights by booked occupancy and average booked nightly rate. Add only genuine owner revenue, then separately account for taxes, cleaning charges, refunds, and platform deductions.
Should I use 365 nights as the starting point?
Not automatically. Start with the nights the exact property can legally and practically be offered after local rules, association restrictions, owner blocks, maintenance, and operating downtime.
How many comparable listings should I use?
There is no universal number. Use enough genuinely similar, current listings to understand the range and explain every inclusion. A smaller property-matched set is usually more useful than a large citywide set built from different property types and locations.
Is an unavailable calendar date the same as a booked night?
No. It may represent a reservation, owner use, maintenance, or a host block. Treat it as booked only when reliable evidence supports that conclusion.
Should cleaning fees and lodging taxes count as revenue?
Show them separately. Match cleaning collected with cleaning and laundry expense, and do not treat taxes collected for remittance as cash available to the owner.
A useful South Florida STR forecast is specific to the address, legal rental pattern, property, month, guest, and operator. Build it from legal availability and property-matched evidence, separate booking value from owner economics, and make the downside visible before deciding what to pay.
Evaluating a Miami, Fort Lauderdale, or Hollywood vacation rental? Book a Fines Group investment consultation to pressure-test the revenue model, cost structure, capital plan, and backup exit.