How to Book Your Holiday Party at Sonsie on Newbury Street

Call Sonsie directly or send an email through the private events contact on the website, tell the team the headcount and preferred date, and book by October 15 to lock in a $250 gift card toward a future visit — a nice way to say thank you for planning ahead. That deadline applies even to parties booked now for dates in 2027.

Sonsie has hosted Back Bay holiday parties since 1993, and the room knows how to handle a crowd without losing the feel of a neighborhood restaurant. The brick oven runs all night, the Wine Room seats smaller groups who want a door that closes, and the French doors open onto Newbury Street for anyone who wants a little air between courses.

Why book a holiday party on Newbury Street specifically?

Newbury Street restaurants offer something office parties and family dinners both need: a location everyone already knows how to get to. Sonsie sits in the middle of Back Bay, an easy walk from the T, from downtown offices, and from the shops people love to duck into before or after dinner. For a holiday party, that convenience matters — nobody wants to explain directions to twenty coworkers in December.

Among restaurants on Newbury Street, Sonsie is also one of the few with real range. The dining room works for a plated dinner, the sidewalk café setup (weather depending) gives a more casual option earlier in the evening, and the Wine Room gives a private party its own space without renting out the whole restaurant.

What kind of holiday parties does Sonsie handle?

Sonsie handles office parties, holiday dinners, and year-end celebrations of nearly any size, from a table of ten to a full buyout. The menu is eclectic and European in the way it has always been — brick oven pizzas alongside international dishes that give a group with different tastes something to agree on. That flexibility is part of why the restaurant has stayed a classic choice in Back Bay for this long.

A private event here doesn't mean a stripped-down banquet menu either. Groups can work with the kitchen to build a spread around the dishes Sonsie is known for, paired with wine service suited to the size of the party.

What's the deadline, and what do you get for booking early?

Book your holiday party by October 15 and Sonsie gives you a $250 gift card, good toward a future meal — the restaurant's way of rewarding groups who plan ahead instead of scrambling in late November. The offer isn't limited to this December: parties booked now for dates well into 2027 still qualify, which makes it worth locking in early even for an event that's over a year out.

Early booking means better dates, better times, and first pick of the room — the Wine Room fills up fast once the holiday calendar gets going.

Which space should you book — the Wine Room, the dining room, or a full buyout?

The right space depends on headcount and how private you need the party to be. The Wine Room is the pick for a self-contained group that wants its own door and its own conversation. The main dining room, with its brick oven and French doors, suits a larger office party that still wants to feel like part of the restaurant's energy rather than sealed off from it. For the biggest year-end celebrations, a full or partial buyout is worth discussing with the events team directly.

What should you do next?

Reach out now with a headcount, a preferred date, and a sense of which space appeals to your group. Sonsie's team can walk through menu options, wine pairings, and room setup once those basics are in hand. For every occasion this holiday season — the office party, the client dinner, the last celebration of the year — Sonsie has been the Back Bay answer since 1993, and the October 15 deadline is the easiest way to make sure the date you want is still open.