"We found the others broken and lying in the shrubbery," he said.
Mr Ward said the plywood signs were usually either screwed to the fence or fastened to the ground with iron rings.
"They were probably nearing the end of their lives but I volunteer my hours to the market and wasn't planning on having to make new ones just yet."
The market started at the Castlecliff Domain in 2015 and later moved to the current location opposite the Foursquare supermarket.
Mr Ward recently purchased a food cart for the market.
"Rather than moan about the lack of one, I decided to purchase it myself," he said.
He said the site has room for more stalls and he encouraged community groups, individuals and schools to join the every-Sunday market.
"It is just $5 for a stall or free for charity groups to sell your wares or promote yourselves.
"If you are thinking about having a garage sale or a school fair - come and join us and have it here where there is plenty of company and traffic going by."
There's no word yet on who vandalised the market's signs.