A beachfront view can make any property feel like an easy rental winner.

The numbers are less forgiving. This vacation rental ROI case study shows how an investor might evaluate a well-located

St. Maarten condo before writing an offer, using realistic operating assumptions rather than headline rental income alone.

The goal is not to promise a return.

Every property has its own purchase price, building rules, condition, guest appeal, financing structure, and management requirements.

The point is to see which numbers deserve attention before a beautiful island home becomes an expensive surprise.

The Property and Investment Assumptions

For this example, consider a furnished two-bedroom condominium near Simpson Bay.

The location offers walkable dining, beach access, airport convenience, and year-round visitor demand.

It is the type of property that can appeal to couples, families, remote workers, and repeat Caribbean travelers.

The assumed purchase price is $625,000. Closing expenses, legal work, due diligence, and initial setup are estimated at 6% of the purchase price, or $37,500.

The buyer also budgets $22,500 for furnishings, linens, small appliances, photography, and guest-ready improvements. Total cash invested before financing is therefore $685,000.

A buyer using financing would calculate cash-on-cash return differently, because debt service changes annual cash flow and the amount of cash placed into the deal.

To keep the example clear, this case study uses an all-cash purchase and focuses first on the property’s operating performance.

Vacation Rental ROI Case Study: Revenue First, Then Reality

A common mistake is to multiply a peak-season nightly rate by 365 nights. A rental home earns revenue only when it is occupied, and its average rate changes throughout the year.

In this scenario, the condo achieves an average daily rate of $355 across the full year. That is not a peak holiday figure. It is the blended average after accounting for stronger winter dates, shoulder-season pricing, and quieter periods. With an assumed occupancy of 62%, the home books 226 nights annually.

Gross rental revenue is calculated as follows:

226 booked nights x $355 average daily rate = $80,230 annual gross revenue

At first glance, $80,230 on a $625,000 purchase looks attractive. But gross revenue is not profit. The owner must still account for management, turnover costs, utilities, association fees, insurance, repairs, taxes and licensing obligations, replacement reserves, and marketing-related expenses.

For this example, annual operating costs are estimated at $33,350. That includes a 20% management fee on gross revenue, cleaning and laundry costs not fully recovered through guest fees, HOA dues, electricity, water, internet, insurance, routine maintenance, supplies, and a reserve for furniture and equipment replacement.

The resulting net operating income is:

$80,230 gross revenue – $33,350 operating expenses = $46,880 net operating income

Using total project cost of $685,000, the estimated unleveraged return is approximately 6.8%.

$46,880 net operating income / $685,000 total investment = 6.8% estimated annual ROI

That is a useful starting point, not a final decision. It does not include personal income tax consequences, financing costs, foreign exchange exposure where applicable, or future capital improvements. It also does not assign a dollar value to the owner’s personal use of the property, which can be meaningful but is not rental income.

Why the Assumptions Matter More Than the Spreadsheet

A small change in occupancy or nightly rate can move the result more than buyers expect. If occupancy falls from 62% to 52% at the same average daily rate, booked nights decline to about 190. Gross revenue drops to roughly $67,450. Because management costs also fall somewhat, the property may still generate income, but the return could move closer to 5% before financing.

The opposite is also true. A superior view, updated interiors, reliable air conditioning, private outdoor space, excellent photography, and responsive guest service may support a higher rate and more repeat bookings. A property that reaches a $390 average daily rate with 66% occupancy produces a very different result.

This is why comparable rentals must be truly comparable. A two-bedroom unit in the same neighborhood is not automatically a match. Check its view, beach proximity, building amenities, pool condition, parking, noise exposure, backup power, elevator access, kitchen quality, and whether it accommodates the guest groups you want to attract.

In St. Maarten and Saint Martin, location also influences seasonality. Simpson Bay can benefit from convenience and dining access. Orient Bay may appeal strongly to beach-focused travelers. Terres Basses villas serve a different luxury guest profile, with higher revenue potential but larger staffing, maintenance, and marketing demands. There is no single island occupancy rate that can responsibly be applied to every property.

The Expenses Buyers Often Underestimate

The most damaging underwriting errors usually sit below the revenue line. Electricity deserves close attention in a tropical climate, especially in homes with several air-conditioned bedrooms, older units, or frequent guest turnover. A pool, landscaped grounds, generator service, and oceanfront exposure can also add recurring costs.

Condominium buyers should review HOA fees and ask what they cover. A lower monthly fee is not automatically better if reserves are inadequate or a major roof, façade, plumbing, or pool project is approaching. Request the association’s financial information, rules, meeting notes when available, insurance details, and any planned assessments.

Maintenance should be budgeted as an annual operating reality, not treated as an occasional inconvenience. Salt air shortens the life of appliances, exterior finishes, locks, electronics, and HVAC equipment. A well-run vacation rental needs periodic replacement of towels, linens, kitchenware, outdoor furniture, and décor as well as prompt repairs when guests are in residence.

Management is another trade-off. Self-managing can preserve more revenue, but it requires reliable local coverage, guest communication, pricing discipline, housekeeping coordination, and fast response when an air conditioner stops working on a Saturday night. Many overseas owners choose professional management because the reduced margin is worth operational consistency and guest satisfaction.

Test the Deal Before You Fall in Love With It

Before making an offer, model three cases: conservative, expected, and strong. The conservative case should use a lower occupancy rate, a modest average daily rate, and a higher repair reserve. If the property only works under its strongest possible assumptions, it may not provide enough margin for normal market variation.

Also separate investment income from lifestyle use. Blocking out four weeks in high season can materially reduce annual revenue because those may be the highest-value booking dates. That does not mean an owner should not enjoy the home. It means the financial model should reflect the decision honestly.

A complete review should also confirm that short-term rentals are permitted for the specific home, building, and jurisdiction. Rules may differ between the Dutch and French sides of the island, and association restrictions can be more limiting than a buyer assumes. Local legal and tax professionals should review the ownership structure and current obligations before closing.

Finally, look beyond year-one cash flow. An investment-grade rental should have a credible resale story. Properties with enduring demand often combine a proven location, easy access, a protected view, quality construction, desirable amenities, and a floor plan that works for both guests and future buyers. Rental income can support ownership, but long-term value also depends on the property’s position in the broader market.

A Better Way to Judge a St. Maarten Rental

The right purchase is not always the listing with the highest projected yield. A slightly lower-return condo in a stronger building, or a villa with less competition and exceptional guest appeal, may offer a more dependable ownership experience. It depends on whether your priority is income, personal use, appreciation potential, or a balance of all three.

SMI Realtors can help buyers compare opportunities across both sides of the island with the local context that online revenue estimates cannot provide. The most useful next step is to evaluate a specific property’s expenses, rental positioning, building rules, and exit potential before emotion sets the price you are willing to pay.

A clear model will not remove every risk from island ownership, but it will help you choose a property whose income potential fits the way you plan to use, hold, and enjoy it.