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Investing in a Vacation Rental Home: How Big Should It Be?

Joan Talmadge | 2/24/2026

One of the most common questions investors ask when buying a vacation rental home is simple: how big should it be? The right answer depends on your budget, your target guest, and how you plan to perform not only in peak summer weeks, but also in the shoulder seasons.

In coastal, seasonal markets like Cape Cod, Martha’s Vineyard, and Nantucket—and in beach destinations nationwide—size affects everything from nightly rates and booking appeal to operating costs like cleaning, utilities, and maintenance.

Start with your goals and your ideal guest

Before you decide on square footage, get specific about who you’re trying to attract. Are you aiming for multi-generational family groups, two families traveling together, couples, or a mix? Your ideal guest will determine the bedroom count, bathroom needs, and how important separate living areas are.


Bedrooms: 3 vs. 4 (and why primary suites matter)

Your budget and your goals will largely determine the size of the home you buy. In general, four-bedroom homes rent for more than three-bedroom homes, especially when two of those bedrooms can function as primary suites.

That kind of layout makes it easy for two small families to share a home and split the cost, which is very appealing to many renters. Homes that sleep a group comfortably—without forcing everyone to share a single hallway bath—tend to feel more “vacation-ready.”

If you’re considering a larger home, pay attention to bedroom placement and privacy (for example, a first-floor suite plus a separate bedroom wing) because layout often matters as much as bedroom count.


Bathrooms: a major decision-maker for groups

The number of bathrooms matters, too. Even a modest two-bedroom cottage becomes much more attractive if it offers two bathrooms, or at least one full bath and one half bath.

From an investor’s perspective, bathrooms are one of the most practical “comfort upgrades” you can buy: they reduce guest friction during the morning rush, make shared stays easier, and help support higher occupancy without the home feeling cramped.


Common space: give guests room to spread out

Homes with both a living room and a separate family room give guests welcome options for spreading out, and features like sunrooms and screened porches are consistently popular.

This matters even more for weeklong stays. When it rains—or when kids want one thing and adults want another—having separate spaces can be the difference between “tight quarters” and a home that feels easy to live in.


Seasonality: bigger isn’t always better

It’s also worth keeping seasonality in mind. Larger homes with four or more bedrooms tend to be harder to rent during the shoulder seasons than smaller properties. In many coastal markets with weekly summer rentals, peak demand is concentrated into a limited number of prime weeks, while spring and fall bookings are less predictable.

A larger home can still be a strong investment, but it helps to underwrite realistically: bigger properties often have higher operating costs (cleaning time, utilities, and maintenance), and you may need standout features or a flexible layout to attract off-season demand.


Duplexes: flexibility when demand shifts

A duplex can offer excellent flexibility. It works well for two small families traveling together who want some shared space but also value privacy.

During the off-season, when demand for larger homes drops, each side of the duplex can often be rented separately. That can widen your renter pool and help smooth out seasonality.

If you’re evaluating a duplex, pay attention to practical details like sound separation, outdoor space boundaries, parking, and whether each side has its own “must-have” features (a functional kitchen, comfortable living area, and adequate bathrooms).


Accessory Dwelling Units: privacy and options

Homes with a separate living space, such as an apartment over a garage or a small cottage on the property, are especially appealing to families who want a bit more privacy for certain members of their group—such as grandparents, adult children, or a nanny.

From an investment standpoint, an ADU can also add flexibility. Depending on local rules and how the property is configured, it may allow you to:

  • Offer a “main house + guest suite” experience for larger groups
  • Create separation that makes shared bookings more comfortable
  • Appeal to smaller groups during the shoulder seasons by emphasizing a cozier footprint

As with any property featuring multiple living spaces, it’s important to confirm how the home can be used and marketed under local guidelines (including occupancy, parking, and any applicable permitting).


Investor takeaway: match size to demand, not just peak-week potential

The best-performing vacation rentals are usually the ones that feel comfortable and intuitive for their target guest. A larger home may command a higher rate in peak season, but a well-designed smaller home can be easier to keep booked outside of summer and may come with lower operating costs.

When you’re deciding how big to buy, focus on a few high-impact questions:

  • Who is the home for? (two families, one extended family, couples, mixed groups)
  • Does the layout support privacy? (primary suites, bedroom separation, bathroom count)
  • Can guests spread out? (multiple living areas, screened porch, sunroom)
  • How will it perform in shoulder seasons? (flexible layout, ADU/duplex options)
  • Do operating costs scale with size? (cleaning time, utilities, wear-and-tear)

FAQ: Vacation rental home size

Q: Is a four-bedroom vacation rental always a better investment than a three-bedroom?

A: Not always. Four-bedroom homes can earn higher peak-season rates, especially with two primary suites, but they may be harder to book in shoulder seasons and often cost more to operate. Layout and flexibility matter as much as bedroom count.

Q: How many bathrooms do renters expect?

A: For group stays, more bathrooms make a meaningful difference. Even in smaller homes, having two bathrooms—or one full plus one half bath—can boost booking appeal and reduce guest friction.

Q: Do duplexes work well as vacation rentals?

A: Duplexes can perform very well because they offer built-in flexibility: they can accommodate larger groups together in peak season and appeal to smaller groups by renting separately in the off-season.

Q: Are homes with ADUs worth it for vacation rental investors?

A: Often, yes—because ADUs add privacy and options. They can make larger group bookings more comfortable and help broaden your appeal outside of peak weeks, depending on how the property is configured and local guidelines.


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About Joan Talmadge

About Joan Talmadge: What began in 1996 as a way for Jeff and me to rent our Cape vacation home soon grew into WeNeedaVacation—and an entirely new career for me after years in education and publishing. Nearly three decades later, we're still at it, now with a wonderfully talented team and two of our children working alongside us. We live on the Cape year round, and it truly is magical in every season.