The Brickworks were established by twin brothers Richard and Robert Duder in around 1875, and used clay from Ngataringa Bay to make bricks, glazed drain pipes and fittings.
After the brothers died, the works were leased in 1942 to the Army, who demolished the chimney, and then later that year to the Avondale firm Crum Brick, Tile and Pottery Co.
Communications advisor for Ryman Healthcare Village Maryvonne Gray said the marquee had various findings from the excavations, mainly old broken bricks and bits of glazed pipe.
"There were some information panels put together by the archaeology team explaining some of the history of the site.
"On one table there were examples of things made at the brickworks at the time including garden pots and some intact bricks kindly loaned for the occasion by Nelson Webster who is a great-nephew of the Duder brothers Robert and Richard," she said.
The Duder family - early settlers on the peninsula - operated a brickworks on the site from 1875 until the 1930s.
The team hoped valuable information relating to the history of the site and brick manufacture in the 19th and early 20th century could still be recovered.
At the eastern end of the site, excavations had revealed the foundations of a round kiln and a late 19th century road and brick pathway which once led up to Lake Road.
Further up, remains of old flues, pipework and some broken bricks had been revealed.
Also in attendance was Trish Deans from the Devonport Heritage Society who said laws to protect historical sites weren't in place when the Navy built their accommodation.
"We wanted to challenge the standard retirement village design that Ryman builds and persuade Ryman that their design should be sympathetic to Devonport's historic character," said Mrs Deans.
Field Supervisor from Clough & Associates, Adina Brown said part of the kiln floor was discovered in exploratory investigations and this has since been confirmed.
"This week we have uncovered the square base of a brick structure in the location we expected the chimney to be, so this is promising."
As part of the overall works, Rymans will install permanent interpretation panels telling the history of the site, and once all the analysis has been completed detailed reports on the excavations will be uploaded to the Auckland Council Cultural Heritage Inventory.
There will also be discussions with Devonport Museum about taking some of the interpretation material.