The additional week represents the only extension possible. The play was originally set to play a limited engagement through Jan. 23 at Playwrights Horizons' Mainstage Theater (416 West 42nd Street).
Trip Cullman directs the staging, which began previews Dec. 16 and had its official opening on Jan. 6.
A Small Fire features three-time Obie Award and Drama Desk Award winner Reed Birney, Tony Award nominee and Drama Desk winner Celia Keenan-Bolger, Tony Award winner Michele Pawk and NAACP Image Award nominee Victor Williams.
In the well-reviewed play, according to PH, "a tough-as-nails contractor (Pawk) finds her senses slipping on the brink of her daughter's (Keenan-Bolger) wedding," and "the impact on her family is nothing less than seismic." It's a "human parable in which unexpected loss leads to an unlikely love story."
The performance schedule is Tuesdays at 7 PM, Wednesdays through Fridays at 8 PM, Saturdays at 2:30 PM & 8 PM and Sundays at 2:30 PM & 7:30 PM. Single tickets, $70, may be purchased online via www.TicketCentral.com, by phone at (212) 279-4200 (noon-8 PM daily), or in person at the Ticket Central Box Office, 416 West 42nd Street (between Ninth & Tenth Avenues).