Tourists had been escorted out of the gallery's staff entrance because they were fearful about people hanging around the bus stop, she said.
Ms Jackson said extra lighting and security cameras did not deter vandalism and bad behaviour, but police had declined including the gallery on their regular beat because of a lack of resources.
She said the police had been called on numerous occasions, with fighting on one occasion spilling into the gallery.
"Gallery staff feel particularly vulnerable at the weekends and have locked the front door to keep out unsavoury characters.
Ms Jackson said the gallery should be a place of great pride for the people of Tauranga and not look like it did now.
"We have noticed an increase in the gallery walls being used as a urinal," she said.
As for the damage and litter, she said double glazed and laminated windows had been smashed and chipped.
The building was also a regular target for taggers.
Ms Jackson said gallery staff had waterblasted grime off the area under the bus seats and up the wall because it was not being cleaned adequately by the council.
Police statistics for crime in Willow St for the first nine months of this year included 34 crimes involving drugs and anti-social behaviour, 11 crimes of violence and six each of destruction of property, drunkenness and suspicious activity.
The agenda for today's meeting lists options to try and fix the problems. One of them was to move the bus stops further up the street towards Hamilton St. The downside was that it would likely meet "strong resistance" from retailers such as Bronco's Sport and Cartridge World.
The option to shift the buses to north of Hamilton St also had strong disadvantages.
An improved cleaning regime and installing a rubbish bin will be considered, along with options to upgrade closed-circuit TV coverage of the area outside the gallery, extend camera monitoring to cover the times of 3pm to 8pm, or employ a security guard for three hours a day costing $32,000 a year.