"It is very sad to think about," Mrs Jones said.
"But we see it as our way of paying that person our respects.
"We're acknowledging that person existed, they had a story and they haven't been forgotten.
"It's not about house cleaning, it's about giving back to our community."
Since their first job, Mrs Jones and her team have cleaned out at least five more estates, four rest home units, a garage full of items the previous home owners had left behind, and the flats of two men with mental illness.
She recalls a time when her crew cleaned out one man's unit at a rest home within the space of two hours -- while his family were at the funeral.
Straight afterwards, his family members were on a plane back to the UK.
"They were blown away, just rapt," Mrs Jones said.
"A lot of family are coming from overseas, as they have so much to organise -- and they haven't time to think about cleaning."
Also rewarding was cleaning for the two mental health patients, who were living in "bad situations" and being transferred to a community facility.
"Their parents were elderly, and no-one was prepared to help them with their boys.
"One of the mums came to us in tears, and just said 'help'."
There have been some tragic cases -- such as retrieving a stack of scrap metal a man had spent 10 years collecting, after his family refused to come from Wellington to help.
Then there was the home in Eketahuna, referred to the centre by Lands Trust Masterton, where a man had lived alone for many years. Mrs Jones said the property was in poor condition, with no electricity and rooms boarded up and piled high with dilapidated furniture and old heirlooms.
"He had just about everything under the sun. His family didn't want to come near the place -- they just wanted the money, and none of the things which contained memories or meant something."
The volunteers were, however, able to salvage the man's collection of 300-plus salt and pepper shakers, currently on sale at the resource centre.
Mrs Jones said the job can be upsetting, especially for the younger volunteers.
"But they stay focussed. It's very satisfying -- it's helping them build confidence and gain job skills."