Kimuel Jetter says his neighbour has hoarded animals and whitegoods for the past decade.
The Kaleen resident said his neighbour had kept dozens of animals in his property, including chickens, guinea pigs and rabbits, before an intervention from the RSPCA prompted their removal.
He said the animals were soon replaced with whitegoods, such as refrigerators and washing machines, which filled the property's front and backyards.
Complaints to various government agencies and politicians were "constantly shifted" and never resulted in a resolution, he said.
Mr Jetter said the state of his neighbour's property caused stress and posed a safety risk to his family, although he refused to contemplate selling his home and leaving the area.
"We moved here first," Mr Jetter said.
"We invested several hundreds of thousands of dollars into this home, and we shouldn't have to move to relocate because this issue has not been addressed".
He is welcoming a move by the Canberra Liberals proposal to crackdown on hoarders and property owners who fail to keep their properties clean.
Mr Jetter said measures designed to "hold owners accountable" for the cleanliness of their property were particularly welcome.
But Mental Health Community Coalition of the ACT executive officer Simon Viereck warned against a punitive approach to dealing with hoarders.
"With hoarding, there is usually and underlying mental health issue. It is not a case of someone simply wanting those items," Mr Viereck said.
"The focus should be not on removing the items, because they will just be replaced, but on removing the compulsion [to hoard]."
Opposition Leader Alistair Coe will introduce new laws into the ACT Legislative Assembly on Wednesday, seeking to strengthen the government's power to force squalid properties to be cleaned up.
Frequent inspections and hefty penalties for residents whose properties need to be "rectified" have also been flagged, under proposed amendments to the Planning and Development Act 2007.
A statement explaining Mr Coe's bill, which The Canberra Times has seen, stated that properties which were covered in overgrown grass or filled with items posed a safety risk for owners, visitors and emergency services, who might have to respond to incidents on the land.
Neighbouring residents have seen their "quality of life and property values" decline, the statement said, as a lack of strict enforcement allowed issues relating to unclean properties to "drag on for years".
The government has the power to issue "controlled activity order" to compel residents to clean up their property.
But government figures show enforcement action is rarely taken.
In 2018-19, the government issued just five "controlled activity orders", a figure which includes enforcement action against a range of offences, such as failure to comply with a lease condition or starting building work without proper approvals.
Under Mr Coe's proposed laws, once an order to clean up a property has been issued, a government inspector must attend the premise at least once every 20 days working days.
If an ongoing order is issued, work to clear the property must be completed within five working days.
The owner or tenant would also be forced to pay twice the expected value of clean up costs, under the proposed laws.