To celebrate its revival and "warm the house" once again, the gallery is hosting a garden party on December 14 and 15.
The gallery had undergone essential earthquake strengthening to ensure the safety and preservation of its priceless collection for future generations.
In a statement, exhibitions curator Izzy Hillman said the reopening would also feature a new exhibition titled "Domestic Reveries".
"This display will showcase contemporary works on loan from renowned artist Jacqueline Fahey, alongside 4% of the gallery’s permanent collection.
"The exhibition taps into the narrative of domestic life entwined with art, using the intimate setting of the home to thread together the connection between the treasures of Aigantighe, the art and the domestic space of the gallery."
Aigantighe House boasts a rich history, originally serving as the residence of the Grant family before being transformed into a public art gallery in 1956.
The seismic strengthening and restoration project was undertaken by Canterbury-based Farrell Construction.
Aigantighe Art Gallery manager Cara Fitzgerald said the gallery was thrilled to be able to welcome visitors back to the house gallery.
"This reopening is not just about the physical space; it's about re-igniting the passion for art and culture in our community.
"We've curated a diverse collection that reflects the gallery's legacy of gifting and our dedication to supporting artistic expression.
"The garden party promises to be a highlight of the event, offering guests an opportunity to enjoy the beautiful surroundings of Aigantighe House while mingling with artists, art lovers, and members of the community."
Ms Fitzgerald said it was their way of saying thank you to the community for their patience.
"It's a celebration of art, community, and the bright future ahead for Aigantighe House Gallery."
Attendees can look forward to live music performances, and a kapa haka performance from Arowhenua Marae as well as guided tours that will provide an in-depth look at the gallery's history, the renovation process, and the featured artworks.
The garden party will run from noon-4pm both days.
— APL