It may be a challenging time for travel, but one day — hopefully, soon — Greenwich residents will once again enjoy visits from loved ones. And when friends, family members or colleagues come to stay, it’s always nice to have inviting accommodations for them, especially if they come in the form of charming and private main-house companions, like guesthouses or cottages. These value-added property features are also notably adept at multitasking, affording space for private home offices, live-in staff, or long-term rental potential in some cases.

Take, for example, the one-bedroom guest suite at 21 Harkim Road in Greenwich — a four-bedroom transitional house on 1.5 acres, with garaging for up to 18 cars. This distinctive property is currently listed for $2.25 million by Julie Church, a Realtor with Houlihan Lawrence’s Greenwich brokerage.

Here, the guest suite — comprising a bedroom and a full bath — have been incorporated into the upper level of a custom-built garage. The current owners used the guest suite as private, quaint accommodations when friends and family came to stay.

Church suggested that the guest suite might also be leveraged as a private home-based office — a timely need for so many businesspersons who are finding telecommuting to be “the new normal.”

The Sarsen Team at Compass Connecticut represents the seller of 125 Pecksland Road, a magnificent stone and brick manor situated on four acres with a private pond. Built in 2000, the grand home is replete with architectural and design details, including ceilings that soar to 25 feet, floor-to-ceiling windows, gleaming hardwood floors, hand-crafted masonry and millwork. The main house affords seven bedrooms and more than 14,500 square feet of living space, and it’s complemented by a quaint guest cottage, crafted in stone and topped with a slate-shingled roof.

“This charming one-bedroom stone guest cottage is unique, because it could really be a standalone house,” according to broker Jack Sarsen. “It has its own separate entrance with a driveway off of Pecksland Road. It is on its own separate section of the estate and does not impede the property at all. The owners have previously rented the guest cottage, used it for guests and for staff.”

There is an endearing cottage at 59 Zaccheus Mead Lane, Greenwich, as well. Located near Greenwich Avenue, on 2.3 acres, the five-bedroom, 4,130-square-foot colonial affords “an estate feel,” according to listing agent Mary-Stuart Freydberg of Sotheby’s International Realty. The current asking price for the property is $3.485 million.

“Steps from the house, this fully remodeled studio bedroom — with full bath, half kitchen, French doors, and multiple windows on three exposures — is an enticing retreat,” Freydberg said. “The privacy, beautiful surroundings and proximity has made it a perfect space for house guests, caretakers and mother-in-law.”

The current owner of 59 Zaccheus Mead Lane is using the guest cottage as a fully functional office. The outbuilding is perfect for this purpose, given that it’s a quiet, private space, definitively separate from the main house.

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For luxury market buyers who may not see the immediate value of guest accommodations — who may think of them as just another structure to maintain and improve — Freydberg offered a differing perspective.

“In addition to benefitting from the convenience and enjoyment it offers, the owners derive more economic value than cost,” she suggested. “At a prior property, the owners [of 59 Zaccheus Mead Lane] had a similar structure that was used extensively by guests and then au pairs, so they already understood the importance and value of this kind of outbuilding. It’s a true luxury to have such an arrangement so close to town.”