The established trees along the facility's Macquarie Street frontage are in the way of a building expansion.

Rather than cutting down the palms, estimated to be 45 to 50 years old, they will be transplanted to Taronga Western Plains Zoo.

The two organisations are hailing the donation as a win-win outcome.

UPA western regional manager Elaine Baillie told of plans to build a new regional administration office on the site.

They "need services to go right under those trees where the building is going to be put", she said.

An opportunity to keep the palms in the community arose when a local arborist linked UPA up with an organisation with a use for established trees.

The tall specimens will take pride of place in the zoo's new cafe at its halfway point, facilities and asset operations manager Kath Oke said. She is thrilled to receive the "generous donation".

"To have significant trees to move into our environment there is amazing and these will make a massive impact," she said.

"They'll be kind of gateway statement trees for us, but they also will provide, once the fronds fill back out, instant shade for us, which is really important, and then structure to the whole area, which is exciting."

Ms Oke said it was a great partnership.

"...they're getting a fantastic outcome and it's a positive outcome for us because we're getting seven magnificent palm trees, and the trees aren't going to go to waste, which is so exciting for us to be able to continue to build the environment out at the zoo as well," she said.

The "massive job" will start next week.

"The logistics going into moving these trees is basically two cranes on site here, low-loader trucks, excavators that we'll be digging out these trees," Ms Oke said.

"We're looking at possibly moving two trees a day because it will take that long...

"It will take us a good week, week and a half to do this, but it will be so worth it in the long run."