Tauranga RDA Chief Executive Officer Kat Macmillan said Neil was "one in a million".
"He's turning eighty today and we are holding a surprise party for him where we'll present him with his trophy.
"He's such a humble man and never wants a fuss but we think to be eighty years old and volunteering around the farm doing some quite physical jobs deserves a bit of a fuss!
"Neil has taken on a range of jobs from fence fixing, to building, to repairing troughs. He designed and built the therapy riding sensory trails, assisted with the construction of the caretakers cottage and helped with the upgrading of the ablution black to its new role as a hay shed.
"You name it and as far as the maintenance and the running of the farm and the facilities Neil seems to have had a hand in everything."
For farm manager, Ray Thomas, Neil is an absolute god-send.
"He has such a wide range of maintenance and building experience that he has been invaluable to the smooth running of the farm and the care of the facilities. Even when recovering from major surgery he came at least three days a week and helped."