Eric Holland was quick enough to snap a photo of the estimated five foot lace monitor scaled on the side of his Thurgoona home. 

"I was just doing a repair job in my shed when I opened the door and I saw this huge thing run across the ground and out of sight," Mr Holland said. 

"I went inside after I saw it in the backyard and heard a banging noise coming from the side of the house.

"When I went outside I saw him on the side of the house with his tail hitting the drain pipe."

Mr Holland, who has lived in the area for 18 years, said he has never seen anything quite like it.

"It was a big surprise really.

"I something get blue tongues and lizards in the backyard but never anything quite like this."

The goanna quickly shuffled off Mr Holland's property and he has not sighted the reptile since.  

The NSW Office of Environment and Heritage said it would not be unusual for a lace monitor to be found in the area around Albury. 

Lace monitors, also known as lace goannas, can grow to around two metres in length and weight up to 20 kilograms. 

A Facebook post by the Border Mail on Mr Holland's discovery has gone viral with more than 1000 likes, comments and shares since it was posted on Thursday morning.